BOSTON PROPERTIES INC
10-K405, 1999-03-31
REAL ESTATE
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                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
 
                               ----------------
 
                                   FORM 10-K
 
[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
    ACT OF 1934
 
                  For the fiscal year ended December 31, 1998
 
[_] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
    EXCHANGE ACT OF 1934 (NO FEE REQUIRED)
 
                  For the transition period from      to
 
                        Commission file number 1-13087
 
                            BOSTON PROPERTIES, INC.
            (Exact name of Registrant as Specified in its Charter)
 
                                                       04-2473675
                 Delaware                       (IRS Employer Id. Number)
       (State or Other Jurisdiction
 
    of Incorporation or Organization)
 
            8 Arlington Street                           02116
          Boston, Massachusetts                        (Zip Code)
     (Address of Principal Executive
               Offices)
 
      Registrant's telephone number, including area code: (617) 859-2600
 
          Securities registered pursuant to Section 12(b) of the Act:
 
           Title of Each Class                 Name of Exchange on Which
       Common Stock, Par Value $.01                  Registered
     Preferred Stock Purchase Rights            New York Stock Exchange
 
       Securities registered pursuant to Section 12(g) of the Act: None
 
   Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days. Yes [X] No [_]
 
   Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to
the best of Registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. [X]
 
   As of March 26, 1999, the aggregate market value of the 60,956,365 Shares
of Common Stock held by non-affiliates of the Registrant was $1,889,647,315
based upon the closing price of $31.00 on the New York Stock Exchange
composite tape on such date. (For this computation, the Registrant has
excluded the market value of all Shares of Common Stock reported as
beneficially owned by executive officers and trustees of the Registrant; such
exclusion shall not be deemed to constitute an admission that any such person
is an affiliate of the Registrant.) As of March 26, 1999, there were
63,540,106 Shares of Common Stock outstanding.
 
   Certain information contained in the Company's Proxy Statement relating to
its Annual Meeting of Stockholders to be held May 5, 1999 are incorporated by
reference in Part III, Items 10, 11, 12 and 13.
 
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                                     PART I
 
ITEM 1. Business
 
General
 
   Boston Properties, Inc. (the "Company") is one of the largest owners and
developers of office properties in the United States, with a significant
presence in Greater Boston; Greater Washington, D.C.; midtown Manhattan;
Greater San Francisco; Princeton/East Brunswick, New Jersey; Baltimore,
Maryland; and Richmond, Virginia. The Company is a fully integrated self-
administered and self-managed real estate company and expects to qualify as a
real estate investment trust ("REIT") for the taxable year ended December 31,
1998. The Company was formed to succeed to the real estate development,
redevelopment, acquisition, management, operating and leasing businesses
associated with the predecessor company founded by Mortimer B. Zuckerman and
Edward H. Linde in 1970. The term "Predecessor Group" or "Predecessor" as used
herein refers to the Company and the entities that owned interests in one or
more properties that were contributed to the Company in connection with the
Company's initial public offering in June 1997 (the "Initial Offering"). The
term "Company" as used herein means Boston Properties, Inc. and its
subsidiaries on a consolidated basis (including Boston Properties Limited
Partnership (the "Operating Partnership") and its subsidiaries) or, where the
context so requires, Boston Properties, Inc., and, as the context may require,
their predecessors.
 
   As of December 31, 1998, the Company's portfolio consisted of 121 properties
("Properties"), including ten properties currently under development by the
Company (the "Development Properties"). The Properties consist of 108 office
properties ("Office Properties"), including 76 Class A office buildings ("Class
A Office Buildings") and 32 properties that support both office and technical
uses ("R&D Properties"); nine industrial properties ("Industrial Properties");
three hotels ("Hotel Properties"); and one parking garage (the "Garage
Property"). Nine of the Office Properties are Development Properties and are
referred to as the "Office Development Properties". One Hotel Property is a
Development Property and is referred to as the "Hotel Development Property".
The Company considers Class A office buildings to be centrally located
buildings that are professionally managed and maintained, attract high-quality
tenants and command upper-tier rental rates, and that are modern structures or
have been modernized to compete with newer buildings. The Company considers
Research and Development properties to support office, research and development
and other technical uses.
 
   The Company has a $500 million unsecured line of credit with BankBoston,
N.A., as agent, which expires in June 2000 (the "Unsecured Line of Credit"). As
of March 26, 1999, $362.0 million was outstanding under the Unsecured Line of
Credit. Reference is made to "Item 7. Management's Discussion and Analysis of
Financial Condition and Results of Operations--Liquidity and Capital Resources"
for additional information regarding the Company's Unsecured Line of Credit and
other outstanding indebtedness.
 
   The Company is a full service real estate company, with substantial in-house
expertise and resources in acquisitions, development, financing, construction
management, property management, marketing, leasing, accounting, tax and legal
services. As of December 31, 1998, the Company had 548 employees. The Company's
18 senior officers, together with Mr. Zuckerman, Chairman of the Board, have an
average of 24 years experience in the real estate industry and an average of 16
years tenure with the Company. The Company's headquarters is located at 8
Arlington Street, Boston, Massachusetts 02116 and its telephone number is (617)
859-2600. In addition, the Company has regional offices at the U.S.
International Trade Commission Building at 500 E. Street, SW, Washington, D.C.
20024, 599 Lexington Avenue, New York, New York 10002, Four Embarcadero Center,
San Francisco, California, 94111 and 101 Carnegie Center, Princeton, New Jersey
08540.
 
The Operating Partnership
 
   Boston Properties Limited Partnership, a Delaware limited partnership, is
the entity through which the Company conducts substantially all of its business
and owns (either directly or through subsidiaries)
 
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substantially all of its assets. As of March 26, 1999, the Company held
approximately 72.75% of the Operating Partnership's common units of general and
limited partnership interest. This structure is commonly referred to as an
umbrella partnership REIT or UPREIT. The Company's general and limited
partnership interests in the Operating Partnership entitle it to share in cash
distributions from, and in the profits and losses of, the Operating Partnership
in proportion to its percentage interest therein and entitle the Company to
vote on all matters requiring a vote of the limited partners. The other
partners of the Operating Partnership are persons who contributed their direct
or indirect interests in certain properties to the Operating Partnership in
exchange for Common Units of limited partnership interest in the Operating
Partnership ("OP Units") or Preferred Units of limited partnership interest in
the Operating Partnership (the "Preferred Units"). The Operating Partnership is
obligated to redeem each OP Unit at the request of the holder thereof for cash
equal to the fair market value of one share of Common Stock at the time of such
redemption (determined in accordance with the provisions of the Second Amended
and Restated Agreement of Limited Partnership of the Operating Partnership, as
amended (the "Partnership Agreement")), provided that the Company may elect to
acquire any such OP Unit presented for redemption for one share of Common
Stock. The Company currently anticipates that it will elect to issue Common
Stock in connection with each such presentation for redemption rather than
having the Operating Partnership pay cash. With each such redemption, the
Company's percentage ownership in the Operating Partnership will increase. In
addition, whenever the Company issues shares of Common Stock other than to
acquire OP Units, the Company will be obligated to contribute any net proceeds
therefrom to the Operating Partnership and the Operating Partnership will be
obligated to issue an equivalent number of OP Units to the Company.
 
   The Preferred Units have such rights, preferences and other privileges
(including the right to convert into Common Units) as are set forth in
amendments to the Partnership Agreement. The Operating Partnership currently
has three series of Preferred Units. The Series One Preferred Units have an
aggregate liquidation preference of approximately $83 million and bear a
preferred distribution at a rate of 7.25% per annum, payable quarterly. The
Series One Preferred Units are convertible into Common Units at the rate of
$38.25 per Common Unit (i) at the holder's election at any time or (ii) at the
election of the Company on or after June 3, 2003, provided that the shares of
Common Stock at the time of such election by the Company are trading at a
specified price.
 
   The Series Two and Series Three Preferred Units, which together have an
aggregate liquidation preference of approximately $311 million, have, between
each other, similar economic terms. On and after December 31, 2002, such
Preferred Units will be convertible, at the holder's election, into Common
Units at a conversion price of $38.10 per Common Unit. Distributions on these
Preferred Units are payable quarterly and generally accrue at a rate of 5.0%
per annum through March 31, 1999; 5.5% through December 31, 1999; 5.625%
through December 31, 2000; 6.0% through December 31, 2001; 6.5% through
December 31, 2002; 7.0% until May 12, 2009; and 6.0% thereafter. The terms of
these Preferred Units provide that they may be redeemed for cash in six annual
tranches, beginning on May 12, 2009, at the election of the Company or the
holders. The Company also has certain conversion rights during these redemption
periods.
 
                                 RECENT EVENTS
 
Recent Property Acquisitions
 
   On January 22, 1998, the Company acquired, for approximately $174.4 million
(including closing costs), Riverfront Plaza, a Class A office building with
approximately 900,000 net rentable square feet located in Richmond, Virginia.
The acquisition was funded by a $52.6 million draw under the Unsecured Line of
Credit and mortgage financing of approximately $121.8 million.
 
   On February 2, 1998, the Company acquired, for approximately $257.8 million
(including closing costs), the Mulligan/Griffin Portfolio, a portfolio of nine
office properties with approximately 1.3 million net rentable square feet and
six parcels of land aggregating 30.7 acres located in Fairfax County, Virginia
and Montgomery
 
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County, Maryland. The acquisition was funded through the payment of
approximately $88.5 million in cash, the assumption of mortgage debt with a
fair value of approximately $118.3 million, the assumption of other liabilities
of approximately $1.0 million, and the issuance of OP Units valued at
approximately $50.0 million.
 
   On June 1, 1998, the Company acquired Decoverly III for cash of
approximately $11.1 million. Decoverly III, a Class A office building with
approximately 77,040 square feet, is located in Rockville, Maryland.
 
   On June 16, 1998, the Company acquired 7450 Boston Boulevard for cash of
approximately $5.8 million. 7450 Boston Boulevard is a 60,537 square foot,
Class A office building located in Springfield, Virginia.
 
   On June 25, 1998, the Company acquired University Place for cash of
approximately $37.0 million. University Place is a 196,007 square foot, Class A
office building located in Cambridge, Massachusetts.
 
   On June 30, 1998, the Company acquired a portfolio of properties known as
the Carnegie Center Portfolio and Tower Center One for approximately $276.0
million. The portfolio consists of ten office buildings with approximately 1.3
million net rentable square feet located in Princeton and East Brunswick, New
Jersey. The acquisition was funded through the assumption of debt of
approximately $64.4 million, the issuance of 2,442,222 Series One Preferred
Units with an aggregate fair value of $83.0 million, and cash of $128.6
million. The Series One Preferred Units bear a preferred distribution of 7.25%
per annum and are convertible into OP Units at a rate of $38.25 per OP Unit.
 
   On July 2, 1998, the Company acquired the Prudential Center, located in
Boston, Massachusetts. The Prudential Center, which consists of two Class A
office towers totaling approximately 1.7 million square feet, a retail complex
totaling 486,428 square feet and 2,700 underground parking spaces, was acquired
for approximately $519.0 million. The acquisition was funded through mortgage
financing of $300.0 million, a draw down of $100.0 million from the Company's
Unsecured Line of Credit, the issuance of 2,993,414 OP Units valued at
approximately $96.2 million and cash of approximately $22.8 million. The
Company also acquired a 50% interest in development rights for cash of
approximately $27.0 million. The development rights consist primarily of rights
to expand the Prudential Center by approximately 991,000 square feet of office
space, 263,000 square feet of retail and community services space and 422,000
square feet of residential space.
 
   On July 10, 1998, the Company acquired Metropolitan Square, an approximately
583,685 square foot, Class A office building in Washington, D.C., for
approximately $175.0 million. The acquisition was funded through the assumption
of mortgage debt with a fair value of approximately $108.4 million, the
issuance of 815,409 OP Units valued at approximately $27.7 million and cash of
approximately $38.9 million.
 
   On July 21, 1998, the Company acquired the Candler Building, an
approximately 518,954 square foot, Class A office building in Baltimore,
Maryland, for approximately $61.0 million. The acquisition was funded through a
draw down of $30.0 million from the Company's Unsecured Line of Credit, the
issuance of 146,898 shares of Common Stock valued at approximately $5.0 million
and cash of $26.0 million.
 
   On August 18, 1998, the Company acquired 1301 New York Avenue, an
approximately 185,000 square foot, Class A office building in Washington, D.C.
for approximately $28.0 million. The acquisition was funded through mortgage
financing of $20.0 million, cash of $6.5 million and the issuance of 44,390 OP
Units valued at approximately $1.5 million. The Company is in the process of
renovating this property for an estimated cost of $18.2 million. The Company
has entered into a lease with a single tenant pursuant to which this property
will be 100% occupied following the completion of these renovations.
 
   On November 3, 1998, the Company acquired Reservoir Place, located in
Waltham, Massachusetts. The property, which consists of approximately 529,992
square feet of office space, was acquired for approximately $104.2 million. The
acquisition was funded through the assumption of mortgage debt with a fair
value of $77.1 million and the issuance of 933,085 OP Units valued at
approximately $27.1 million.
 
 
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   On November 12, 1998, the Company completed the first phase of a two-phase
acquisition of Embarcadero Center in San Francisco. Embarcadero Center is a
six-building portfolio of Class A space consisting of an aggregate of 3.7
million square feet of net rentable office space, 354,000 square feet of retail
space and 2,090 underground parking spaces. The first phase of the acquisition
resulted in 100% ownership of two buildings and an approximate 50% ownership in
the four other buildings. The second phase of the acquisition, in which the
Company acquired the remaining interest in the four other buildings, closed on
February 10, 1999. The Company acquired the entire Embarcadero Center portfolio
for approximately $1.2 billion, which was financed as follows: (i) the
assumption or incurrence of $730.0 million of property related, secured
indebtedness, (ii) a draw down from the Company's Unsecured Line of Credit of
approximately $87.3 million, (iii) issuance of Series Two and Three Preferred
Units having an aggregate value of approximately $286.4 million, and (iv) the
issuance of $100 million of the Company's Series A Convertible Redeemable
Preferred Stock (the "Preferred Stock"). The Series Two and Three Preferred
Units bear a preferred distribution ranging from 5.0% to 7.0% per annum and are
convertible into OP Units at $38.10 per OP Unit on or after December 31, 2002.
 
   On January 21, 1999, the Company entered into a series of binding agreements
with affiliates of The Prudential Insurance Company of America ("Prudential")
giving the Company the right to acquire, at any time until January 2001
(subject to certain deadlines being met and additional deposits being made),
(i) the leasehold interests in the remaining two office development sites in
New York City's Times Square and (ii) the rights to receive an aggregate of
approximately $129.4 million in ground rent credits and other reimbursements.
If acquired, the Company plans to develop two office buildings on the sites
which will have an aggregate of approximately 2.25 million rentable square feet
of office and retail space and a minimum of 31,375 square feet of advertising
signage. The total acquisition price for the leasehold interests in the sites
and the credits and reimbursements would be approximately $312.25 million. In
connection with the signing, the Company delivered a contract deposit of $15
million dollars, and beginning on February 1, 1999, the Company has been making
additional monthly contract deposits of $1.25 million. Under the terms of the
agreements, the Company will forfeit the total contract deposit delivered if it
elects to terminate its rights under the agreements absent a default or other
breach by Prudential. The Company will have no other liability or obligation to
Prudential if it elects not to acquire the sites. Pursuant to the terms of the
agreements, prudential has the right, but not the obligation, to become an
equity participant in the development ventures that will develop the sites,
with an interest of up to one-third, as elected by Prudential.
 
Recent Financing Activity
 
   On January 30, 1998, the Company completed a public offering of 23,000,000
shares of Common Stock (including 3,000,000 shares issued pursuant to the
exercise of the underwriters' overallotment options) at $35.125 per share,
resulting in gross proceeds of approximately $807.9 million and net proceeds to
the Company of approximately $766.5 million (the "Second Offering").
 
   On July 2, 1998, in connection with the acquisition of the Prudential
Center, the Company sold 1,675,846 shares of Common Stock in a private
placement for approximately $53.8 million.
 
   On July 21, 1998, in connection with the acquisition of the Candler
Building, the Company issued 146,898 shares of Common Stock in a private
placement for approximately $5.0 million.
 
   On February 10, 1999, in connection with the acquisition of Embarcadero
Center, the Company issued 2.0 million shares of the Company's Series A
Convertible Redeemable Preferred Stock for $100.0 million.
 
                         BUSINESS AND GROWTH STRATEGIES
 
Business Strategy
 
   The Company's primary business objective is to maximize growth in net cash
available for distribution and to enhance the value of its portfolio in order
to maximize total return to stockholders. The Company's
 
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strategy to achieve this objective is: (i) to selectively acquire and develop
properties in the Company's existing markets, adjacent suburban markets and in
new markets that present favorable opportunities; (ii) to maintain high lease
renewal rates at rents that are at the high end of the markets in which the
Properties are located, and to continue to achieve high room rates and
occupancy rates in the Hotel Properties; and (iii) to selectively provide fee-
based development consulting and project management services to third parties.
 
Growth Strategies
 
 External Growth
 
   The Company believes that it is well positioned to realize significant
growth through external asset development and acquisition. The Company believes
that this development experience and the Company's organizational depth
positions the Company to continue to develop a range of property types, from
single-story suburban office properties to high-rise urban developments, within
budget and on schedule. Other factors that contribute to the Company's
competitive position include: (i) the significant increase in demand for new,
high quality office space in the Company's core market areas; (ii) the
Company's control of sites (including sites under contract or option to
acquire) in its core markets that will support approximately 11.3 million
square feet of new development through fee ownership, contract ownership, and
joint venture relationships; (iii) the Company's reputation gained through the
stability and strength of its existing portfolio of properties; (iv) the
Company's relationships with leading national corporations and public
institutions seeking new facilities and development services; (v) the Company's
relationships with nationally recognized financial institutions that provide
capital to the real estate industry; and (vi) the substantial amount of
commercial real estate owned by domestic and foreign institutions, private
investors, and corporations who are seeking to sell such assets in the
Company's market areas.
 
   The Company has targeted four areas of development and acquisition as
significant opportunities to execute the Company's external growth strategy:
 
    Acquire assets and portfolios of assets from institutions or
  individuals. The Company believes that due to its size, management strength
  and reputation it will be in an advantageous position to acquire portfolios
  of assets or individual properties from institutions or individuals. Some
  of these properties may be acquired for cash but the Company believes that
  it is particularly well positioned to appeal to sellers wishing to convert
  on a tax deferred basis their ownership of property to the ownership of
  equity in a diversified real estate operating company that offers liquidity
  through access to the public equity markets. In addition, the Company may
  pursue mergers with and acquisitions of compatible real estate firms. The
  ability to offer OP Units to sellers who would otherwise recognize a gain
  upon a sale of assets for cash or Common Stock may facilitate this type of
  transaction on a tax-efficient basis.
 
     Acquire existing underperforming assets and portfolios of assets. The
  Company has actively pursued and continues to pursue opportunities to
  acquire existing buildings that, while currently generating income, are
  either underperforming the market due to poor management or are currently
  leased at below market rents with anticipated roll-over of space. These
  opportunities may include the acquisition of entire portfolios of
  properties. The Company believes that because of its in-depth market
  knowledge and development experience in each market in which it currently
  operates, its national reputation with brokers, financial institutions and
  others involved in the real estate market and its access to competitively-
  priced capital, the Company is well-positioned to identify and acquire
  existing, underperforming properties for competitive prices and to add
  significant additional value to such properties through its effective
  marketing strategies and responsive property management program.
 
     Pursue development and land acquisitions in selected submarkets. The
  Company believes that development of well-positioned office buildings and
  R&D properties is currently or will be justified in many of the submarkets
  in which the Company has a presence. The Company believes in acquiring land
  in response to market conditions that allow for the development of such
  land in the relatively near term. Over
 
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  its 28 year history, the Company has established a successful record of
  carefully timing land acquisitions in submarkets where the Company can
  become one of the market leaders in establishing rent and other business
  terms. The Company believes that there are opportunities in its existing
  and other markets to acquire land with development potential at key
  locations in markets which are experiencing growth.
 
     In the past, the Company has been particularly successful at acquiring
  sites or options to purchase sites that need governmental approvals before
  the announcement of development. Because of the Company's development
  expertise, knowledge of the governmental approval process and reputation
  for quality development with local government approval bodies, the Company
  generally has been able to secure the permits necessary to allow
  development, thereby enabling the Company to profit from the increase in
  their value once the necessary permits have been obtained.
 
     Provide third-party development management services. While the primary
  objective of the Company has been, and will continue to be, the development
  and acquisition of quality, income producing buildings to be held for long
  term ownership, a select amount of comprehensive project-level development
  management services for third parties will be an element of the continued
  growth and strategy of the Company. The Company believes that third-party
  development projects permit the Company to: (i) create relationships with
  major institutions and corporations that lead to new development
  opportunities; (ii) continue to enhance the Company's reputation in its
  core markets; (iii) create opportunities to enter new markets; and (iv)
  leverage its operating overhead.
 
 Internal Growth
 
   The Company believes that significant opportunities exist to increase cash
flow from its existing Properties because they are high quality properties in
desirable locations in submarkets that, in general, are experiencing rising
rents, low vacancy rates and increasing demand for office and industrial space.
In addition, the Company's Properties are in markets where, in general, supply
is limited by the lack of available sites and the difficulty of receiving the
necessary approvals for development on vacant land. The Company's strategy for
maximizing the benefits from these opportunities is (i) to provide high quality
property management services using its own employees in order to enhance tenant
preferences for renewal, expansion and relocation in the Company's properties,
and (ii) to achieve speed and transaction cost efficiency in replacing
departing tenants through the use of in-house services for marketing, lease
negotiation, and design and construction of tenant improvements. In addition,
the Company believes that the Hotel Properties will add to the Company's
internal growth because of their desirable locations in the downtown Boston and
East Cambridge submarkets, which are experiencing high occupancy rates and
continued growth in room rates, and their effective management by Marriott(R)
International, Inc., which has achieved high guest satisfaction and limitations
on increases in operating costs.
 
     Cultivate existing submarkets. In choosing locations for its properties,
  the Company has paid particular attention to transportation and commuting
  patterns, physical environment, adjacency to established business centers,
  proximity to sources of business growth and other local factors.
  Substantially all of the Company's square footage of Office Properties are
  located in submarkets in Greater Boston, Greater Washington, D.C., midtown
  Manhattan, Greater San Francisco, Princeton/East Brunswick, New Jersey,
  Baltimore, Maryland, and Richmond, Virginia.
 
     Many of these submarkets are experiencing increasing rents and as a
  result current market rates often exceed the rents being paid by current
  tenants in the Properties. The Company expects that leases expiring over
  the next three years in these submarkets will be renewed, or space re-let,
  at higher rents. Based on leases in place at December 31, 1998, leases with
  respect to 6.45% and 7.00% of the Office and Industrial Properties will
  expire in calendar years 1999 and 2000, respectively. The actual rental
  rates at which available space will be re-let will depend on prevailing
  market factors at the time. There can be no assurance that the Company will
  re-let such space at an increased, or even at the then current, rental
  rate.
 
     Directly manage properties to maximize the potential for tenant
  retention. The Company itself provides property management services, rather
  than contracting for this service, to achieve awareness of
 
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  and responsiveness to tenant needs. The Company and the Properties also
  benefit from cost efficiencies produced by an experienced work force
  attentive to preventive maintenance and energy management and from the
  Company's continuing programs to assure that its property management
  personnel at all levels remain aware of their important role in tenant
  relations. The Company has long recognized that renewal of existing tenant
  leases, as opposed to tenant replacement, often provides the best operating
  results, because renewals minimize transaction costs associated with
  marketing, leasing and tenant improvements and avoid interruptions in
  rental income during periods of vacancy and renovation of space.
 
     Replace tenants quickly at best available market terms and lowest
  possible transaction costs. The Company believes that it has a competitive
  advantage in attracting new tenants and achieving rental rates at the
  higher end of its markets as a result of its well-located, well-designed
  and well-maintained properties, its reputation for high quality building
  services and responsiveness to tenants, and its ability to offer expansion
  and relocation alternatives within its submarkets. The Company's objective
  throughout this process is to obtain the highest possible rental terms and
  to achieve rent commencement for new tenancies as quickly as possible, and
  the Company believes that its use of in-house resources for marketing,
  leasing and tenant improvements continues to result in lower than average
  transaction costs.
 
                              THE HOTEL PROPERTIES
 
   To assist the Company in maintaining its status as a REIT, the Company
leases the two in-service Hotel Properties, pursuant to a lease with a
participation in the gross receipts of such Hotel Properties, to a lessee ("ZL
Hotel LLC") in which Messrs. Zuckerman and Linde are the sole member-managers.
Messrs. Zuckerman and Linde have a 9.8% economic interest in such lessee and
one or more unaffiliated charities have a 90.2% economic interest. Marriott
International, Inc. manages these Hotel Properties under the Marriott name
pursuant to a management agreement with the lessee. Under the REIT
requirements, revenues from a hotel are not considered to be rental income for
purposes of certain income tests, which a REIT must meet. Accordingly, in order
to maintain its qualification as a REIT, the Company has entered into the
participating leases described above to provide revenue, which qualifies as
rental income under the REIT requirements. The Company has made similar
arrangements with respect to the Hotel Development Property.
 
                             ENVIRONMENTAL MATTERS
 
   Some of the Properties are located in urban and industrial areas where fill
or current or historical industrial uses of the areas have caused site
contamination. With respect to all of the Properties, independent environmental
consultants have been retained in the past to conduct or update Phase I
environmental assessments (which generally do not involve invasive techniques
such as soil or ground water sampling) and asbestos surveys on all of the
Properties. These environmental assessments have not revealed any environmental
conditions that the Company believes will have a material adverse effect on its
business, assets or results of operations, and the Company is not aware of any
other environmental condition with respect to any of the Properties which the
Company believes would have such a material adverse effect.
 
   With respect to a property in Massachusetts, the Company received a Notice
of Potential Responsibility from the state regulatory authority on January 9,
1997, related to groundwater contamination. In addition, the Company received a
Notice of Downgradient Property Status Submittal from each of two third parties
concerning alleged contamination at two downgradient properties. On January 15,
1997, the Company notified the state regulatory authority that the Company
would cooperate with and monitor the tenant at the property (which investigated
the matter and undertook remedial actions). That investigation identified the
presence of hazardous substances in and near a catch basin along the property
line. The tenant completed an Immediate Response Action at the site in April
1998. The Company expects the tenant will likewise take any additional
necessary response actions. The lease with the tenant contains a provision
pursuant to which the tenant indemnifies the Company against such liability.
 
 
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   On January 15, 1992, another property in Massachusetts was listed by the
state regulatory authority as an unclassified Confirmed Disposal Site in
connection with groundwater contamination. The Company has engaged a specially
licensed environmental consultant to perform the necessary investigation and
assessment and to prepare submittals to the state regulatory authority. On
August 1, 1997, such consultant submitted to the state regulatory authority a
Phase I--Limited Site Investigation Report and Downgradient Property Status
Opinion. This Opinion concluded that the property qualifies for Downgradient
Property Status under the state regulatory program, which eliminates certain
deadlines for conducting response actions at a site and may qualify the Company
for liability relief under recent statutory amendments. Although the Company
believes that the current or former owners of the upgradient source properties
may ultimately be responsible for some or all of the costs of such response
actions, the Company will take any necessary further response actions.
 
   An investigation at an additional property in Massachusetts identified
groundwater contamination. We engaged a specially licensed environmental
consultant to perform the necessary investigation and assessment and to prepare
submittals to the state regulatory authority. On March 11, 1998, the consultant
submitted to the state regulatory authority a Release Notification and
Downgradient Property Status Opinion. This Opinion concluded that the property
qualifies for Downgradient Property Status under the state regulatory program,
which eliminates certain deadlines for conducting response actions at a site
and may qualify the Company for liability relief under recent statutory
amendments. Although the Company believes that the current or former owners of
the upgradient source properties may ultimately be responsible for some or all
of the costs of such response actions, the Company will take any necessary
further response actions.
 
                                  COMPETITION
 
   The Company competes in the leasing of office and industrial space with a
considerable number of other real estate companies some of which may have
greater marketing and financial resources than the Company. In addition, the
Company's in-service Hotel Properties compete for guests with other hotels,
some of which may have greater marketing and financial resources than the
Company and Marriott International, Inc.
 
                                       8
<PAGE>
 
                                  SEASONALITY
 
   The Company's two in-service Hotel Properties traditionally have experienced
significant seasonality in their operating income, with average weighted net
operating income by quarter over the three years 1996 through 1998 as follows:
 
<TABLE>
<CAPTION>
    First Quarter       Second Quarter         Third Quarter         Fourth Quarter
    -------------       --------------         -------------         --------------
    <S>                 <C>                    <C>                   <C>
         13%                 30%                    32%                   25%
</TABLE>
 
   The Company's Office and Industrial Properties and the Garage Property have
not traditionally experienced significant seasonality.
 
 
                                       9
<PAGE>
 
ITEM 2. Properties
 
   As of December 31, 1998 the Company's portfolio consisted of 121 Properties,
including ten Development Properties. The Properties consist of 108 Office
Properties, including 76 Class A Office Buildings and 32 R&D Properties; nine
Industrial Properties; three Hotel Properties; and one Garage Property. In
addition, the Company owns an additional twenty-one parcels of land for future
development. The following table sets forth information relating to the
Properties currently owned by the Company:
 
<TABLE>
<CAPTION>
                                                                           Net
                                                                         Rentable
                                                  Percent     Number      Square
Property Name            Location                Ownership of Buildings    Feet
- -------------            --------                --------- ------------ ----------
<S>                      <C>                     <C>       <C>          <C>
Office Properties:
 Class A Office
  Properties:
 280 Park Avenue........ New York, NY              100.0%        1       1,198,769
 599 Lexington Avenue... New York, NY              100.0%        1       1,000,070
 Riverfront Plaza....... Richmond, VA              100.0%        1         899,720
 875 Third Avenue....... New York, NY              100.0%        1         681,669
 Democracy Center....... Bethesda, MD              100.0%        3         680,000
 100 East Pratt Street.. Baltimore, MD             100.0%        1         633,482
 Two Independence
  Square................ SW, Washington, DC        100.0%        1         579,600
 Capital Gallery........ SW, Washington, DC        100.0%        1         399,549
 One Independence
  Square................ SW, Washington, DC        100.0%        1         337,794
 2300 N Street.......... NW, Washington, DC        100.0%        1         280,065
 National Imagery and
  Mapping Agency
  Building.............. Reston, VA                100.0%        1         263,870
 Reston Town Center
  Office Complex........ Reston, VA                100.0%        2         261,046
 Lockheed Martin
  Building.............. Reston, VA                100.0%        1         255,244
 The U.S. International
  Trade Commission Bldg
  ...................... SW, Washington, DC        100.0%        1         243,998
 One Cambridge Center... Cambridge, MA             100.0%        1         215,385
 University Place....... Cambridge, MA             100.0%        1         195,931
 Newport Office Park.... Quincy, MA                100.0%        1         168,829
 Lexington Office Park.. Lexington, MA             100.0%        2         168,500
 191 Spring Street...... Lexington, MA             100.0%        1         162,700
 Ten Cambridge Center... Cambridge, MA             100.0%        1         152,664
 10 & 20 Burlington Mall
  Road.................. Burlington, MA            100.0%        2         152,552
 Waltham Office Center.. Waltham, MA               100.0%        3         129,658
 Montvale Center........ Gaithersburg, MD           75.0%        1         122,157
 91 Hartwell Avenue..... Lexington, MA             100.0%        1         122,135
 Three Cambridge
  Center................ Cambridge, MA             100.0%        1         107,484
 201 Spring Street...... Lexington, MA             100.0%        1         102,000
 Bedford Business Park.. Bedford, MA               100.0%        1          90,000
 Eleven Cambridge
  Center................ Cambridge, MA             100.0%        1          79,616
 33 Hayden Avenue....... Lexington, MA             100.0%        1          79,564
 Decoverly Two.......... Rockville, MD             100.0%        1          77,747
 Decoverly Three........ Rockville, MD             100.0%        1          77,040
 170 Tracer Lane........ Waltham, MA               100.0%        1          73,258
 32 Hartwell Avenue..... Lexington, MA             100.0%        1          69,154
 195 West Street........ Waltham, MA               100.0%        1          63,500
 100 Hayden Avenue...... Lexington, MA             100.0%        1          55,924
 204 Second Avenue...... Waltham, MA               100.0%        1          40,974
 92 Hayden Avenue....... Lexington, MA             100.0%        1          30,980
 8 Arlington Street..... Boston, MA                100.0%        1          30,526
 Carnegie Center/Tower
  One................... New Jersey                100.0%       10       1,366,360
 Candler................ Baltimore, MD             100.0%        1         518,954
 Metropolitan Square.... Washington, DC            100.0%        1         583,685
 Prudential Center...... Boston, MA                100.0%        2       1,693,790
 Reservoir Place........ Waltham, MA               100.0%        1         529,992
 Embarcadero............ San Francisco, CA         100.0%        6       3,655,423
                                                               ---      ----------
Subtotal for Office Properties............................      66      18,631,358
                                                               ---      ----------
Retail Space:
 Prudential Center...... Boston, MA                100.0%        1         486,428
 Embarcadero Center..... San Francisco, CA         100.0%                  354,113
                                                               ---      ----------
Subtotal for Retail Space.................................       1         840,541
                                                               ---      ----------
R & D Properties:
 Bedford Business Park.. Bedford, MA               100.0%        2         383,704
 910 Clopper Road....... Gaithersburg, MD          100.0%        1         180,650
 Fullerton Square....... Springfield, VA           100.0%        2         178,841
 Virginia #3............ Springfield, VA           100.0%        1          60,537
 Hilltop Business
  Center................ South San Francisco, CA    35.7%        9         144,479
 7435 Boston Boulevard,
  Building One.......... Springfield, VA           100.0%        1         105,414
 7601 Boston Boulevard,
  Building Eight........ Springfield, VA           100.0%        1         103,750
</TABLE>
 
                                       10
<PAGE>
 
<TABLE>
<CAPTION>
                                                                           Net
                                                                         Rentable
                                                  Percent     Number      Square
Property Name            Location                Ownership of Buildings    Feet
- -------------            --------                --------- ------------ ----------
<S>                      <C>                     <C>       <C>          <C>        <C>
 8000 Grainger Court,
  Building Five......... Springfield, VA           100.0%        1          90,465
 7700 Boston Boulevard,
  Building Twelve....... Springfield, VA           100.0%        1          82,224
 7500 Boston Boulevard,
  Building Six.......... Springfield, VA           100.0%        1          79,971
 7501 Boston Boulevard,
  Building Seven........ Springfield, VA           100.0%        1          75,756
 7600 Boston Boulevard,
  Building Nine......... Springfield, VA           100.0%        1          69,832
 Fourteen Cambridge
  Center................ Cambridge, MA             100.0%        1          67,362
 164 Lexington Road..... Billerica, MA             100.0%        1          64,140
 930 Clopper Road....... Gaithersburg, MD          100.0%        1          60,056
 Sugarland Building
  Two................... Herndon, VA               100.0%        1          59,423
 7374 Boston Boulevard,
  Building Four......... Springfield, VA           100.0%        1          57,321
 Sugarland Building
  One................... Herndon, VA               100.0%        1          52,797
 8000 Corporate Court,
  Building Eleven....... Springfield, VA           100.0%        1          52,539
 7451 Boston Boulevard,
  Building Two.......... Springfield, VA           100.0%        1          47,001
 17 Hartwell Avenue..... Lexington, MA             100.0%        1          30,000
 7375 Boston Boulevard,
  Building Ten.......... Springfield, VA           100.0%        1          26,865
                                                               ---      ----------
Subtotal for R & D Properties.............................      32       2,073,127
                                                               ---      ----------
Industrial Properties
 2391 West Winton
  Avenue................ Hayward, CA               100.0%        1         221,000
 40-46 Harvard Street... Westwood, MA              100.0%        1         169,273
 38 Cabot Boulevard..... Bucks County, PA          100.0%        1         161,000
 6201 Columbia Park
  Road, Building Two.... Landover, MD              100.0%        1          99,885
 2000 South Club Drive,
  Building Three........ Landover, MD              100.0%        1          83,608
 25-33 Dartmouth
  Street................ Westwood, MA              100.0%        1          78,045
 1950 Stanford Court,
  Building One.......... Landover, MD              100.0%        1          53,250
 560 Forbes Boulevard... South San Francisco, CA    35.7%        1          40,000
 430 Rozzi Place........ South San Francisco, CA    35.7%        1          20,000
                                                               ---      ----------
Subtotal for Industrial Properties........................       9         926,061
                                                               ---      ----------
Subtotal for In-service Office and Industrial Properties..     108      22,471,087
                                                               ---      ----------
Development Properties
 One and Two Reston
  Overlook.............. Reston, VA                 25.0%        2         444,000
 One Freedom Square..... Reston, VA                 25.0%        1         406,980
 200 West Street........ Waltham, MA               100.0%        1         250,000
 Eight Cambridge
  Center................ Cambridge, MA             100.0%        1         175,000
 The Arboretum.......... Reston, VA                100.0%        1          96,000
 Market Square North.... NW, Washington, D.C.       50.0%        1         409,843
 1301 New York Ave...... Washington, D.C.          100.0%        1         178,665
 181 Spring Street...... Lexington, MA             100.0%        1          52,000
                                                               ---      ----------
Subtotal for Development Properties.......................       9       2,012,488
                                                               ---      ----------
Consolidated total for all Properties.....................     117      24,483,575
                                                               ---      ----------
<CAPTION>
                                                                                   Rooms
                                                                                   -----
<S>                      <C>                     <C>       <C>          <C>        <C>
 Long Wharf Marriott.... Boston, MA                100.0%        1         420,000   402
 Cambridge Center
  Marriott.............. Cambridge, MA             100.0%        1         330,400   431
 Residence Inn by
  Marriott **........... Cambridge, MA             100.0%        1         187,474   221
                                                               ---      ----------  ----
                                                                 3         937,874  1054
                                                               ---      ----------  ----
Garage Properties:
 Cambridge Center North
  Garage................ Cambridge, MA             100.0%        1         332,442
 Structured Parking.....                                                 5,802,711
                                                               ---      ----------
Subtotal for parking......................................               6,135,153
Total in-service and development properties...............     121      31,556,602
                                                               ===      ==========
</TABLE>
- --------
**Under development at December 31, 1998.
 
                                       11
<PAGE>
 
ITEM 3. Legal Proceedings
 
   Neither the Company, nor its affiliates, is presently subject to any
material litigation or, to the Company's knowledge, has any litigation been
threatened against it or its affiliates other than routine actions and
administrative proceedings substantially all of which are expected to be
covered by liability or other insurance and in the aggregate are not expected
to have a material adverse effect on the business or financial condition of the
Company.
 
ITEM 4. Submission of Matters to a Vote of Security Holders
 
   No matters were submitted to a vote of the Company's stockholders during the
fourth quarter of the year ended December 31, 1998.
 
                                       12
<PAGE>
 
                                    PART II
 
ITEM 5. Market for Registrant's Common Equity and Related Stockholder Matters
 
   The Company's Common Stock is listed on the New York Stock Exchange under
the symbol "BXP". The high and low closing sales prices for the periods
indicated in the table below were:
<TABLE>
<CAPTION>
Quarter Ended                                      High      Low   Distributions
- -------------                                    --------- ------- -------------
<S>                                              <C>       <C>     <C>
December 31, 1998............................... $32 1/2   $26 5/8    $.425(a)
September 30, 1998..............................  34 11/16  23 7/8     .425
June 30, 1998...................................  35 15/16  32 1/6     .405
March 31, 1998..................................  35 7/8    32 1/2     .405
December 31, 1997...............................  34 3/8    30         .405
September 30, 1997..............................  33 1/4    26 5/8     .405
June 30, 1997...................................  27 1/4    26 1/6     .035
</TABLE>
- --------
(a) Paid on January 28, 1999 to stockholders of record on December 30, 1998.
 
   At March 15, 1999, there were approximately 179 shareholders of record. This
does not include beneficial owners for whom Cede & Co. or others act as
nominee.
 
   The Company has adopted a policy of paying regular quarterly distributions
on its Common Stock and cash distributions have been paid on the Company's
Common Stock with respect to the period since its inception.
 
   In order to maintain its qualification as a REIT, the Company must make
annual distributions to its shareholders of at least 95% of its taxable income
(not including net capital gains). Distributions for Federal Income Tax
purposes totaled $1.756 per share in 1998 ($1.4136 of which was declared and
paid during 1998). The Company intends that any dividend paid in respect of its
common stock during the last quarter of each year will, if necessary, be
adjusted to satisfy the REIT requirement that at least 95% of taxable income
for such taxable year be distributed.
 
   On April 8, 1997, the Operating Partnership was formed with Boston
Properties, Inc., a Massachusetts corporation ("BP-Massachusetts"), as general
partner and an affiliate as a limited partner. The sale of the interests in the
Operating Partnership was made in reliance on Section 4(2) of the Securities
Act of 1933, as amended (the "Securities Act").
 
   On April 9 and 15, 1997, the Company entered into an Omnibus Option
Agreement (or, in the case of one entity, a similar agreement) with a total of
80 individuals (the "Individuals") and entities (the "Entities") (including
economic or a controlling interest). None of the Entities was formed for the
purpose of entering into the Omnibus Option Agreement and acquiring OP Units.
Such agreement provides that the Operating Partnership can, at its option and
without any further action by such Individuals or Entities, acquire all or any
of the interests of the Individuals or Entities in the 74 Properties
(collectively, the "Interests"). The right of the Operating Partnership to
acquire all or any of the Interests from the Individuals and Entities and to
issue OP Units in exchange therefor is subject only to the fulfillment of
conditions (principally, the completion of the Offering) beyond the control of
the Individuals and Entities. The total number of OP Units that were issued to
the Individuals and Entities will depend on the final offering price of a share
of Common Stock in the Offering. Such agreement was entered into and will be
consummated in reliance on Section 4(2) of, and Regulation D under, the
Securities Act.
 
   On April 11, 1997, BP-Massachusetts and Boston Properties, Inc., a Delaware
corporation ("BP-Delaware"), and the Operating Partnership, entered into a
number of agreements (including a merger
 
                                       13
<PAGE>
 
agreement and a contribution agreement) that memorializes (i) the issuance of
Common Stock by BP-Delaware to the stockholders of BP-Massachusetts (Messrs.
Zuckerman and Linde) upon consummation of a reincorporation merger in
connection with the Formation Transactions and (ii) the contribution to the
Operating Partnership of the proceeds of the Offering and the management and
development operations currently held by BP-Massachusetts. Such agreements were
entered into and were consummated in reliance on Section 4(2) of the Securities
Act.
 
   On October 23, 1997, in connection with the Company's acquisition of 100
East Pratt Street, the Company issued 500 shares of Common Stock to
International Business Machines Corporation, one of the sellers of the
Property. Such shares were issued in reliance on Section 4(2) of, and
Regulation D under, the Securities Act.
 
   On November 21, 1997, in connection with the Company's acquisition of 875
Third Avenue, the Company issued 890,869 OP Units to Kenvic Associates, the
contributor of such property. Such OP Units were issued in reliance on Section
4(2) of, and Regulation D under, the Securities Act.
 
   On February 2, 1998, in connection with the Company's acquisition of the
Mulligan/Griffin Portfolio, the Company issued 1,471,456 OP Units to the
contributor of such property. Such OP Units were issued in reliance on Section
4(2) of, and Regulation D under, the Securities Act.
 
   On May 28, 1998, in connection with the Company's acquisition of a parcel of
land known as Tower Oaks, the Company issued 592,916 OP Units to the
contributor of such property. Such OP Units were issued in reliance on Section
4(2) of, and Regulation D under, the Securities Act.
 
   On July 2, 1998, in connection with the Company's acquisition of The
Prudential Center, the Company issued 2,993,414 OP Units and sold 1,675,846
newly issued shares of Common Stock to an affiliate of such contributor. Such
OP Units and shares of Common Stock were issued in reliance on Section 4(2) of,
and Regulation D under, the Securities Act.
 
   On July 10, 1998, in connection with the Company's acquisition of
Metropolitan Square, the Company issued 815,409 OP Units to the contributor of
such property. Such OP Units were issued in reliance on Section 4(2) of, and
Regulation D under, the Securities Act.
 
   On July 21, 1998, in connection with the Company's acquisition of the
Candler Building, the Company issued 146,898 shares of Common Stock to the
contributor of such property. Such OP Units were issued in reliance on Section
4(2) of, and Regulation D under, the Securities Act.
 
   On August 18, 1998, in connection with the Company's acquisition of 1301 New
York Avenue, the Company issued 44,390 OP Units to the contributor of such
property. Such OP Units were issued in reliance on Section 4(2) of, and
Regulation D under, the Securities Act.
 
   On November 3, 1998, in connection with the Company's acquisition of
Reservoir Place, the Company issued 933,085 OP Units to the contributor of such
property. Such OP Units were issued in reliance on Section 4(2) of, and
Regulation D under, the Securities Act.
 
   On November 12, 1998, in connection with the Company's acquisition
Embarcadero Center, the Company issued 6,311,979 Preferred Units to the
contributor of such property. Such Preferred Units were issued in reliance on
Section 4(2) of, and Regulation D under, the Securities Act.
 
 
                                       14
<PAGE>
 
ITEM 6. Selected Financial Data
 
   The following sets forth selected financial and operating data for the
Company on a historical consolidated basis and for the Predecessor on a
historical combined basis. The following data should be read in conjunction
with the financial statements and notes thereto and Management's Discussion and
Analysis of Financial Condition and Results of Operations included elsewhere in
this Form 10-K.
 
   Historical operating results of the Company and the Predecessor, including
net income, may not be comparable to future operating results.
 
<TABLE>
<CAPTION>
                                     The Company                          The Predecessor Group
                         ----------------------------------- -------------------------------------------------
                               Year          June 23, 1997   January 1, 1997
                                                                                 Year ended December 31,
                               ended              to               to        ---------------------------------
                         December 31, 1998 December 31, 1997  June 22, 1997     1996        1995       1994
                         ----------------- ----------------- --------------- ----------  ----------  ---------
                                                (in thousands, except per share data)
<S>                      <C>               <C>               <C>             <C>         <C>         <C>
Statement of Operations
 information
Total revenues..........   $    513,847       $  145,643        $129,818     $  269,933  $  248,725  $ 244,083
                           ------------       ----------        --------     ----------  ----------  ---------
Expenses:
 Property...............        150,490           40,093          27,032         58,195      55,421     53,239
 Hotel..................            --               --           22,452         46,734      44,018     42,753
 General and
  administrative........         22,504            6,689           5,116         10,754      10,372     10,123
 Interest...............        124,860           38,264          53,324        109,394     108,793     97,273
 Depreciation and
  amortization..........         75,418           21,719          17,054         36,199      33,828     33,112
                           ------------       ----------        --------     ----------  ----------  ---------
 Income (loss) before
  minority interests....        140,575           38,878           4,840          8,657      (3,707)     7,583
 Minority interests.....        (41,982)         (11,652)           (235)          (384)       (276)      (412)
                           ------------       ----------        --------     ----------  ----------  ---------
 Income (loss) before
  extraordinary items...         98,593           27,226           4,605          8,273      (3,983)     7,171
 Extraordinary gain
  (loss) on early debt
  extinguishments,
  net...................         (5,481)           7,925             --           (994)         --         --
                           ------------       ----------        --------     ----------  ----------  ---------
 Net income (loss)......   $     93,112       $   35,151        $  4,605     $    7,279  $   (3,983)    $7,171
                           ============       ==========        ========     ==========  ==========  =========
 Basic earnings per
  share:
   Income before
    extraordinary
    items...............   $       1.62       $     0.70             --             --          --         --
   Extraordinary gain
    (loss), net.........          (0.09)            0.21             --             --          --         --
                           ------------       ----------
   Net income...........   $       1.53       $     0.91             --             --          --         --
                           ------------       ----------
   Weighted average
    number of common
    shares outstanding..         60,776           38,694             --             --          --         --
 Diluted earnings per
  share:
   Income before
    extraordinary
    items...............   $       1.61       $     0.70             --             --          --         --
   Extraordinary gain
    (loss), net.........          (0.09)            0.20             --             --          --         --
                           ------------       ----------
   Net income...........   $       1.52       $     0.90             --             --          --         --
                           ------------       ----------
   Weighted average
    number of common and
    common equivalent
    shares outstanding..         61,308           39,108             --             --          --         --
Balance Sheet
 information:
 Real estate, gross.....   $  4,917,193       $1,796,500             --      $1,035,571  $1,012,324  $ 984,853
 Real estate, net.......      4,559,809        1,502,282             --         771,660     773,810    770,763
 Cash...................         12,166           17,560             --           8,998      25,867     46,289
 Total assets...........      5,235,087        1,672,521             --         896,511     922,786    940,155
 Total indebtedness.....      3,088,724        1,332,253             --       1,442,476   1,401,408  1,413,331
 Stockholders' and
  owners' equity
  (deficit).............        948,481          175,048             --        (576,632)   (506,653)  (502,230)
Other information:
 Funds from
  Operations............   $    205,209       $   60,008        $ 21,450     $   36,318  $   29,151     39,568
 Funds from Operations
  (Company's share).....        153,045           42,258             --             --          --         --
 Dividends per share....           1.64             1.62a            --             --          --         --
 Cash flow provided by
  operating
  activities............        215,287           46,146          25,090         55,907      29,092     45,624
 Cash flow used in
  investing
  activities............     (2,179,215)        (519,743)        (32,844)       (34,315)    (36,844)   (18,424)
 Cash flow provided by
  (used in) financing
  activities............      1,958,534          491,157           9,266        (38,461)    (12,670)   (31,608)
</TABLE>
- --------
a - annualized
 
                                       15

<PAGE>
 
   (1) The White Paper of Funds from Operations approved by the Board of
Governors of the National Association of Real Estate Investment Trusts
("NAREIT") in March 1995 defines Funds from Operations as net income (loss)
(computed in accordance with GAAP), excluding gains (or losses) from debt
restructuring and sales of properties, plus real estate related depreciation
and amortization and after adjustments for unconsolidated partnerships and
joint ventures. The Company believes that Funds from Operations is helpful to
investors as a measure of the performance of the equity REIT because, along
with cash flow from operating activities, financing activities and investing
activities, it provides investors with an indication of the ability of the
Company to incur and service debt, to make capital expenditures and to fund
other cash needs. The Company computes Funds from Operations in accordance with
standards established by NAREIT which may not be comparable to Funds from
Operations reported by other REITs that do not define the term in accordance
with the current NAREIT definition or that interpret the current NAREIT
definition differently than the Company. Funds from Operations does not
represent cash generated from operating activities determined in accordance
with GAAP and should not be considered as an alternative to net income
(determined in accordance with GAAP) as a measure of the Company's liquidity,
nor is it indicative of funds available to fund the Company's cash needs,
including its ability to make cash distributions.
 
   Funds from Operations for the respective periods is calculated as follows:
 
<TABLE>
<CAPTION>
                                    The Company                      The Predecessor Group
                         ---------------------------------- -----------------------------------------
                               Year         June 23, 1997   January 1, 1997
                                                                            Year ended December 31,
                               ended              to              to        -------------------------
                         December 31, 1998 December 31,1997  June 22, 1997   1996     1995     1994
                         ----------------- ---------------- --------------- -------  -------  -------
                                           (in thousands, except per share data)
<S>                      <C>               <C>              <C>             <C>      <C>      <C>
Income (loss) before
   minority interests...     $140,575          $38,878          $ 4,840     $ 8,657  $(3,707) $ 7,583
Add:
  Real estate deprecia-
   tion and amortiza-
   tion.................       74,649           21,417           16,808      35,643   33,240   32,509
Less:
  Minority property
   partnership's share
   of Funds from
   Operations...........       (4,185)            (287)            (198)       (479)   (382)     (524)
  Preferred allocation..       (5,830)             --               --          --       --       --
  Non-recurring item--
   significant lease
   termination fee......          --               --               --       (7,503)     --       --
                             --------          -------          -------     -------  -------  -------
Funds from Operations...     $205,209          $60,008          $21,450     $36,318  $29,151  $39,568
                             --------          -------          -------     -------  -------  -------
Company's Funds from
   Operations...........     $153,045          $42,258              --          --       --       --
                             --------          -------          -------     -------  -------  -------
  Per share--basic......     $   2.25          $  1.09              --          --       --       --
                             --------          -------          -------     -------  -------  -------
  Per share--diluted....     $   2.50          $  1.08              --          --       --       --
                             ========          =======          =======     =======  =======  =======
</TABLE>
 
<TABLE>
<S>                                               <C>
Reconciliation to Diluted Funds from Operations:
</TABLE>
 
<TABLE>
<CAPTION>
                                                                        For the period from June 23, 1997
                          For the year ended December 31, 1998                 to December 31, 1997
                         ------------------------------------------    -----------------------------------
                            Income           Shares      Per Share       Income       Shares     Per Share
                         (Numerator)     (Denominator)     Amount      (Numerator) (Denominator)  Amount
                         -------------   --------------  ----------    ----------- ------------- ---------
<S>                      <C>             <C>             <C>           <C>         <C>           <C>
Basic Funds from
   Operations per
   Share................  $     153,045          60,776         $2.52    $42,258      38,694      $ 1.09
Minority interest ad-
 justment...............          1,053             --            --         --          --          --
Effect of Dilutive
   Securities
   Convertible Preferred
   Units................          2,117           1,135         (0.01)       --          --
  Stock Options.........                            532         (0.01)       --          414       (0.01)
                          -------------     -----------    ----------    -------      ------      ------
Dilutive Funds from
   Operations per
   Share................       $156,215          62,443    $     2.50    $42,258      39,108      $ 1.08
                          =============     ===========    ==========    =======      ======      ======
</TABLE>
 
                                       16

<PAGE>
 
Item 7. Management's Discussion and Analysis of Financial Condition and Results
of Operations
 
   The following discussion should be read in conjunction with the selected
financial data and the historical consolidated and combined financial
statements and related notes thereto for the Company and the Predecessor,
respectively. The following discussion is based primarily on the consolidated
financial statements of the Company for the period subsequent to formation of
the Company on June 23, 1997 and on the combined financial statements of the
Predecessor for the periods prior to such date. The combined financial
statements of the Predecessor include the results of operations from 82
properties for the periods presented. Historical results and percentage
relationships in the Consolidated and Combined Financial Statements, including
trends which might appear, should not be taken as indicative of future
operations or financial position.
 
 Overview
 
   Certain statements in this Form 10-K, in the Company's press releases, and
in oral statements made by or with the approval of an authorized executive
officer of the Company, constitute "forward-looking statements" as that term is
defined under the Private Securities Litigation Reform Act of 1995 (the "Act")
and releases issued by the Securities and Exchange Commission. The words
"believe," "expect," "anticipate," "intend," "estimate" and other expressions
which are predictions of or indicate future events and trends and which do not
relate to historical matters identify forward-looking statements. Reliance
should not be placed on forward-looking statements because they involve known
and unknown risks, uncertainties and other factors, which may cause the actual
results, performance or achievements of the Company to differ materially from
anticipated future results, performance or achievements expressed or implied by
such forward-looking statements. Factors that could cause actual results to
differ materially from those set forth in the forward-looking statements
include general economic conditions, local real estate conditions, timely re-
leasing of occupied square footage upon expiration, interest rates,
availability of equity and debt financing and other risks detailed from time to
time in the Company's filings with the Securities and Exchange Commission. The
Company undertakes no obligation to publicly update or revise any forward-
looking statement, whether as a result of new information, future events or
otherwise.
 
   Boston Properties, Inc. (the "Company") is one of the largest owners and
developers of office properties in the United States, with a significant
presence in Greater Boston, Greater Washington, D.C., Greater San Francisco,
midtown Manhattan, Princeton/East Brunswick, New Jersey, Baltimore, Maryland,
and Richmond, Virginia. The Company is a fully integrated self-administered and
self-managed real estate investment trust ("REIT"). The Company was formed to
succeed to the real estate development, redevelopment, acquisition, management,
operating and leasing businesses associated with the predecessor company
founded by Mortimer B. Zuckerman and Edward H. Linde in 1970. The term
"Predecessor Group" or "Predecessor" as used herein refers to the entities that
owned interests in one or more properties that were contributed to the Company
in connection with the Company's initial public offering in June 1997 (the
"Initial Offering"). The term "Company" as used herein includes Boston
Properties, Inc. and its subsidiaries on a consolidated basis (including Boston
Properties Limited Partnership (the "Operating Partnership")).
 
   At December 31, 1998, the Company's portfolio consisted of 121 properties
(the "Properties") totaling approximately 31.6 million square feet, including
ten properties currently under development. The Properties consisted of 108
office properties, including 76 Class A office buildings and 32 properties that
support both office and technical uses; nine industrial properties; three
hotels (including one hotel under development during 1998 which opened on
February 1, 1999)(the "Hotel Properties"); and one parking garage.
 
   In 1998, the Company continued to identify and complete attractive
acquisitions and development transactions. During 1998, the Company added 11.4
million square feet to its portfolio by completing acquisitions totaling
approximately $2.9 billion (the "1998 Acquisitions"). The Company increased its
presence in the Greater San Francisco and Baltimore, Maryland markets. In
addition, the Company entered into new markets in Richmond, Virginia and
Princeton/East Brunswick, New Jersey by completing transactions totaling
approximately $450.4 million and over 2.2 million square feet. As of December
31, 1998, the Company had construction in progress representing an estimated
total investment of approximately $222.3 million and a total of approximately
2.0 million square feet.
 
                                       17
<PAGE>
 
   The Company is focusing on increasing the cash flow from its existing
portfolio of properties by maintaining high occupancy levels and increasing
effective rents. On the 778,401 square feet of second generation space renewed
or re-leased during the year, new rents were approximately 9.9% higher than the
expiring rents. At December 31, 1998, the Company's office and industrial
portfolio of properties was 98.4% occupied.
 
   The Company also continues to strengthen its balance sheet and to establish
a capital structure designed to allow the Company to take advantage of growth
opportunities. In January 1998, the Company raised more than $807 million in
equity capital by completing a public offering of common stock. In addition,
during 1998, the Operating Partnership has issued more than $565 million of
common and preferred units in the Operating Partnership in exchange for certain
properties.
 
 Results of Operations
 
   The results of operations for the year ended December 31, 1996 include the
operations of the Predecessor. The results of operations for the year ended
December 31, 1997 includes the operations of the Predecessor for the period
January 1, 1997 through June 22, 1997 and the operations of the Company from
June 23, 1997 through December 31, 1997.
 
 Comparison of the year ended December 31, 1998 to the year ended December 31,
 1997
 
   Rental revenues increased $254.1 million or 108.9% for the year ended
December 31, 1998 compared to the year ended December 31, 1997 primarily as a
result of (i) the 1998 Acquisitions generating revenues of approximately $149.6
million, (ii) a full year of rental revenues from 280 Park Avenue, 100 East
Pratt Street and 875 Third Avenue (the "1997 Acquisitions") which increased
revenues by approximately $78.5 million, and (iii) an overall increase in
occupancy rates and rental rates.
 
   Hotel revenues decreased $31.2 million or 100.0% for the year ended December
31, 1998 compared to the year ended December 31, 1997 because hotel operating
revenue was only recognized for the period from January 1, 1997 to June 22,
1997 as a result of the Operating Partnership entering into participating
leases at the time of the Initial Offering.
 
   Third party management and development fee income increased $4.9 million or
65.5% for the year ended December 31, 1998 compared to the year ended December
31, 1997 primarily as a result of new fees for development services for
projects which began during 1998 and increased fees on existing projects.
 
   Interest and other income increased $10.5 million or 315.6% primarily due to
an increase in interest income resulting from an increase in average cash
reserves over the year due primarily to the proceeds received from the second
offering.
 
   Property expenses increased $83.4 million or 124.2% for the year ended
December 31, 1998 compared to the year ended December 31, 1997 primarily as a
result of (i) the 1998 Acquisitions which had property expenses totaling $46.7
million, (ii) a full year of property expenses from the 1997 Acquisitions which
increased property expenses by $25.8 million, and (iii) an overall increase in
occupancy.
 
   Hotel expenses decreased $22.5 million or 100.0% for the year ended December
31, 1998 compared to the year ended December 31, 1997 because the Company did
not manage the Hotel Properties but rather leased them under participating
leases.
 
   General and administrative expenses increased $10.7 million or 90.6% for the
year ended December 31, 1998 compared to the year ended December 31, 1997
primarily due to the opening of new regional offices in San Francisco,
California and Princeton, New Jersey, the hiring of additional employees as a
result of the 1997 and 1998 Acquisitions and operating as a public company.
 
                                       18
<PAGE>
 
   Interest expense increased $33.3 million or 36.3% for the year ended
December 31, 1998 compared to the year ended December 31, 1997 primarily as a
result of interest incurred on assumed mortgages related to certain of the 1998
Acquisitions of $40.0 million and a full year of interest expense related to
the 1997 Acquisitions adding $23.1 million of interest expense. This was offset
by reduced interest resulting from the payoff of certain mortgage indebtedness
during 1997 with proceeds from the Initial Offering.
 
   Depreciation and amortization expense increased $36.6 million or 94.5% for
the year ended December 31, 1998 compared to the year ended December 31, 1997
primarily as a result of the 1998 Acquisitions adding $23.4 million and a full
year of depreciation on the 1997 Acquisitions which increased depreciation by
$9.4 million.
 
   As a result of the foregoing, income before extraordinary items and minority
interests of the Company increased $96.9 million.
 
 Comparison of the year ended December 31, 1997 to the year ended December 31,
 1996
 
   Rental revenues increased $38.4 million or 19.7% for the year ended December
31, 1997 compared to the year ended December 31, 1996 primarily as a result of
(i) the 1997 Acquisitions adding approximately $20.4 million in rental
revenues, (ii) the inclusion of revenue of approximately $13.6 million from the
hotel leases entered into in connection with the Initial Offering, and (iii) an
overall increase in average occupancy and rental rates. This was offset by a
decrease due to no lease termination fee received in the year ended
December 31, 1997 compared to a $7.5 million fee received during 1996.
 
   Hotel revenue decreased $34.5 million or 52.5% for the year ended December
31, 1997 compared to the year ended December 31, 1996 primarily because hotel
operating revenue of $31.2 million was only recognized for the period from
January 1, 1997 to June 22, 1997 as a result of the Operating Partnership
entering into a participating lease at the time of the Initial Offering.
 
   Third party management and development fee income increased $1.8 million or
31.1% for the year ended December 31, 1997 compared to the year ended December
31, 1996 primarily as a result of new fees for development services for
projects which began during 1997 and increased fees on existing projects.
 
   Interest and other income decreased approximately $0.2 million or 5.5 %
primarily due to a reduction in interest income resulting from a reduction in
cash reserves.
 
   Property expenses increased $8.9 million or 15.3% for the year ended
December 31, 1997 compared to the year ended December 31, 1996 primarily as a
result of 1997 acquisitions which incurred $ 7.7 million in property expenses
and an overall increases in real estate taxes.
 
   Hotel expenses decreased $24.3 million or 52.0% for the year ended December
31, 1997 compared to the year ended December 31, 1996 because after the Initial
Offering the Company did not manage the Hotel Properties but rather leased them
under participating leases.
 
   Interest expense decreased $17.8 million or 16.3% for the year ended
December 31, 1997 compared to the year ended December 31, 1996 primarily as the
result of the payoff of certain mortgage indebtedness with the proceeds from
the Initial Offering.
 
   As a result of the foregoing, income before extraordinary items and minority
interests of the Company and the Predecessor Group increased $35.1 million.
 
 Liquidity and Capital Resources
 
   Cash and cash equivalents were $12.2 and $17.6 million at December 31, 1998
and December 31, 1997, respectively. The decrease in cash is primarily a result
of cash flows used for investing activities offset by cash provided by
operating activities and financing activities. Net cash provided by operating
activities was $215.3 million for the year ended December 31, 1998 compared to
the $71.2 million for the year ended December 31, 1997.
 
                                       19
<PAGE>
 
   Net cash used in investing activities increased from $552.6 million for the
year ended December 31, 1997 to $2.2 billion for the year ended December 31,
1998. This increase is due primarily to the following acquisitions of real
estate assets during 1998:
 
 Acquisitions
 
  .  On January 22,1998, the Company acquired, approximately $174.4 million
     (including closing costs), Riverfront Plaza, a Class A Office building
     with approximately 900,000 net rentable square feet located in Richmond,
     Virginia. The acquisition was funded by a $52.6 million draw under the
     Unsecured Line of Credit and mortgage financing of approximately $121.8
     million.
 
  .  On February 2, 1998, the Company acquired, for approximately $257.8
     million (including closing costs), the Mulligan/Griffin Portfolio, a
     portfolio of nine office properties with approximately 1.3 million net
     rentable square feet and six parcels of land aggregating 30.7 acres
     located in Fairfax County, Virginia and Montgomery County, Maryland. The
     acquisition was funded through the payment of approximately $88.5
     million in cash, the assumption of mortgage debt with a fair value of
     approximately $118.3 million, the assumption of other liabilities of
     approximately $984,000, and the issuance OP Units valued at
     approximately $50.0 million.
 
  .  On June 1, 1998, the Company acquired Decoverly III, for approximately
     $11.1 million in cash. Decoverly III, a Class A office building with
     approximately 77,040 square feet, is located in Rockville, Maryland.
 
  .  On June 16, 1998, the Company acquired 7450 Boston Boulevard for cash of
     approximately $5.8 million. 7450 Boston Boulevard is a 60,537 square
     foot, Class A office building located in Springfield, Virginia.
 
  .  On June 25, 1998, the Company acquired University Place for cash of
     approximately $37.0 million. University Place is a 196,007 square foot,
     Class A office building located in Cambridge, Massachusetts.
 
  .  On June 30, 1998, the Company acquired a portfolio of properties known
     as the Carnegie Center Portfolio and Tower Center One for approximately
     $276.0 million. The portfolio consists of ten office buildings with
     approximately 1.3 million net rentable square feet located in Princeton
     and East Brunswick, New Jersey. The acquisition was funded through the
     assumption of debt of approximately $64.4 million, the issuance of
     2,442,222 Series One Preferred Units with an aggregate value of $83.0
     million, and cash of $128.6 million. The Series One Preferred Units bear
     a preferred distribution of 7.25% per annum and are convertible into OP
     Units at a rate of $38.25 per Series One Preferred Unit.
 
  .  On July 2, 1998, the Company acquired the Prudential Center, located in
     Boston, Massachusetts. The Prudential Center, which consists of two
     Class A office towers totaling approximately 1.7 million square feet, a
     retail complex totaling 486,428 square feet and 2,700 underground
     parking spaces, was acquired for approximately $519.0 million. The
     acquisition was funded through mortgage financing of $300.0 million, a
     draw down of $100.0 million from the Company's Unsecured Line of Credit,
     the issuance of 2,993,414 OP Units valued at approximately $96.2 million
     and cash of approximately $22.8 million. The Company also acquired a 50%
     interest in development rights for cash of approximately $27.0 million.
 
  .  On July 10, 1998, the Company acquired Metropolitan Square, an
     approximately 583,685 square foot, Class A office building in
     Washington, D.C., for approximately $175.0 million. The acquisition was
     funded through the assumption of mortgage debt with a fair value of
     approximately $108.4 million, the issuance of 815,409 OP Units valued at
     approximately $27.7 million and cash of approximately $38.9 million.
 
  .  On July 21, 1998, the Company acquired the Candler Building, an
     approximately 518,954 square foot, Class A office building in Baltimore,
     Maryland, for approximately $61.0 million. The
 
                                       20
<PAGE>
 
     acquisition was funded through a draw down of $30.0 million from the
     Company's Unsecured Line of Credit, the issuance of 146,898 shares of
     the Company's common stock valued at approximately $5.0 million and cash
     of $26.0 million.
 
  .  On August 18, 1998, the Company acquired 1301 New York Avenue, an
     approximately 185,000 square foot, Class A office building in
     Washington, D.C. for approximately $28.0 million. The acquisition was
     funded through mortgage financing of $20.0 million, cash of $6.5 million
     and the issuance of 44,390 OP Units valued at approximately $1.5
     million. The Company is in the process of renovating this property for
     an estimated cost of $18.2 million. The Company has entered into a lease
     with a single tenant pursuant to which this property will be 100%
     occupied following the completion of these renovations.
 
  .  On November 3, 1998, the Company acquired Reservoir Place, located in
     Waltham, Massachusetts. The property, which consists of approximately
     529,992 square feet, was acquired for approximately $104.2 million. The
     acquisition was funded through the assumption of mortgage debt with a
     fair value of $77.1 million and the issuance of approximately $27.1
     million of OP Units.
 
  .  On November 12, 1998, the Company completed the first phase of a two-
     phase acquisition of Embarcadero Center in San Francisco. Embarcadero
     Center is a six-building portfolio of Class A space consisting of an
     aggregate of 3.7 million square feet of net rentable office space,
     354,000 square feet of retail space and 2,090 underground parking
     spaces. The first phase of the acquisition resulted in 100% ownership of
     two buildings and an approximate 50% ownership in the four other
     buildings. The second phase of the acquisition, in which the Company
     acquired the remaining interest in the four other buildings, closed on
     February 10, 1999. The Company acquired the entire Embarcadero Center
     portfolio for approximately $1.2 billion, which was financed as follows:
     (i) the assumption or incurrence of $730.0 million of property related,
     secured indebtedness, (ii) a draw down from the Company's Unsecured Line
     of Credit of approximately $87.3 million, (iii) issuance of Preferred
     Units in the Operating Partnership ("the Series Two and Three Preferred
     Units") having an aggregate value of approximately $286.4 million, and
     (iv) the issuance of $100 million of the Company's Series A Convertible
     Redeemable Preferred Stock (the "Preferred Stock"). The Series Two and
     Three Preferred Units bear a preferred distribution ranging from 5.0% to
     7.0% per annum and are convertible into OP Units at $38.10 per Series
     Two and Three Preferred Unit.
 
  .  During 1998, the Company acquired land in various existing regions for
     potential future developments. The Company acquired these land parcels
     for approximately $23.6 million in cash.
 
  .  The Company has also funded various development projects. The total cash
     invested during 1998 was approximately $67.5 million.
 
   Net cash provided by (used in) financing activities increased from $500.4
million provided for the year ended December 31, 1997 to cash provided of $2.0
billion for the year ended December 31, 1998. This increase in primarily
attributable to the $1.2 billion in proceeds received from new mortgage notes
and the $420.1 million of proceeds from a short term note.
 
   Cash and cash equivalents decreased $5.4 million during the year ended
December 31, 1998 compared to an increase of $8.7 million during the year
ended December 31, 1997. The decrease is due to a $1.5 billion increase in net
cash provided by financing activities and a $144.1 million increase in cash
provided by operating activities, offset by an increase in cash used for
investing activities of approximately $1.6 billion.
 
 Recent Equity Financings
 
   On January 30, 1998, the Company completed the second offering of
23,000,000 shares of Common Stock (including 3,000,000 shares issued pursuant
to the exercise of the underwriters' overallotment options) at $35.125 per
share, resulting in gross proceeds of approximately $807.9 million and net
proceeds to the Company of approximately $766.5 million.
 
                                      21
<PAGE>
 
   On July 2, 1998, in connection with the acquisition of the Prudential
Center, the Company sold 1,675,846 shares of Common Stock in a private
placement for approximately $53.8 million.
 
   On July 21, 1998, the Company issued 146,898 shares of Common Stock in a
private placement in connection with the acquisition of the Candler Building
valued at approximately $5.0 million.
 
   On February 10, 1999, the Company issued 2.0 million shares of the Company's
Series A Convertible Redeemable Preferred Stock for $100.0 million in
connection with the acquisition of Embarcadero Center.
 
 Capitalization
 
   At December 31, 1998, the Company's total consolidated debt was
approximately $3.1 billion. At December 31, 1998, the Company's outstanding
consolidated debt consisted of approximately $15.0 million under Unsecured Line
of Credit, as amended, approximately $2.7 billion of mortgage indebtedness, and
approximately $420.1 million in notes payable. The weighted average rate of the
Company's consolidated mortgage indebtedness is 6.87% and the weighted average
maturity is approximately 5.6 years.
 
   Based on the Company's total market capitalization of approximately $6.1
billion at December 31, 1998 (at the December 31, 1998 closing Common Stock
price of $30.50 per share and including the 23,797,998 OP Units (excluding OP
Units held by the Company), an aggregate of 10,454,301 Series One, Two and
Three Preferred Units (the "Preferred Units") (assuming all are converted to OP
Units) and the Company's consolidated debt), the Company's consolidated debt
represented approximately 50.88% of its total market capitalization.
 
   The Company utilizes the Unsecured Line of Credit primarily to finance
acquisitions of additional properties, for working capital purposes, and to
fund the development of properties. The Unsecured Line of Credit is a non-
recourse obligation of the Operating Partnership and is guaranteed by the
Company. The Company's ability to borrow under the Unsecured Line of Credit is
subject to the Company's compliance with a number of customary financial and
other covenants on an ongoing basis, including (i) loan-to-value ratio against
the total borrowing base not to exceed 55%, (ii) a loan-to-value ratio against
the total secured borrowing base not to exceed 55%, (iii) debt service coverage
ratio of 1.4 for the borrowing base and 1.50 for the Company as a whole for
full fixed charges, (iv) a leverage ratio not to exceed 60%, (v) limitations on
additional indebtedness and stockholders distributions, and (vi) a minimum net
worth requirement. Amounts drawn under the Unsecured Line of Credit for LIBOR
based loans bear interest at a floating rate based on a spread over LIBOR equal
to 90 to 120 basis points, depending on the Company's applicable leverage
ratio, subject to increase to 140 basis points if the total fixed charge ratio
falls below 1.75 but not lower than 1.50. At December 31, 1998, the Company had
the ability to borrow an additional $257.0 million under the Unsecured Line of
Credit, as $228.0 million was unavailable for 90 days as a result of the
Embarcadero transaction per the terms of the Unsecured Line of Credit
agreement, as amended. As of March 26, 1999 the Company's Unsecured Line of
Credit had a total borrowing capacity of $138.0 million.
 
                                       22
<PAGE>
 
   The following table sets forth certain information regarding the mortgage
debt at December 31, 1998:
 
<TABLE>
<CAPTION>
                                  Principal    Interest
          Properties                Amount     Rate               Maturity
          ----------              ---------    --------           --------
                                (in thousands)
<S>                             <C>            <C>           <C>
Embarcadero Center One and
 Two..........................    $  319,914   6.70%         December 10, 2008
The Prudential Center.........       298,686   6.72%         July 1, 2008
599 Lexington Avenue..........       225,000   7.00%         July 19, 2005(1)
280 Park Avenue...............       220,000   7.00%(2)      September 11, 2002
Embarcadero Center Four.......       159,813   6.79%         February 1, 2006
875 Third Avenue..............       153,807   8.00%(3)      December 31, 2002
Embarcadero Center Three......       150,000   6.40%         January 1, 2007
Two Independence Square.......       120,252   8.09%(4)      February 27, 2003
Riverfront Plaza..............       119,992   6.61%         January 21, 2008
Metropolitan Square...........       107,386   6.75%(5)      June 1, 2000
Embarcadero Center--Tower.....        99,910   6.50%         January 1, 2006
100 East Pratt Street.........        94,371   6.73%         November 1, 2008
Reservoir Place...............        77,006   6.88%(6)      November 1, 2006
One Independence Square.......        76,611   8.12%(4)      August 21, 2001
2300 N Street.................        66,000   6.88%         August 3, 2003
Capital Gallery...............        59,103   8.24%         August 15, 2006
Ten Cambridge Center and North
 Garage.......................        40,000   7.57%         March 29, 2000
10 and 20 Burlington Mall Road
 (7)..........................        37,000   8.33%         October 1, 2001
Lockheed Martin Building......        27,249   6.61%         June 1, 2008
Reston Corporate Center.......        25,727   6.56%         May 1, 2008
1301 New York Avenue..........        24,965   6.70%         August 15, 2009
191 Spring Street.............        23,430   8.50%         September 1, 2006
Bedford Business Park.........        22,667   8.50%         December 10, 2008
NIMA Building.................        22,291   6.51%         June 1, 2008
212 Carnegie Center...........        20,997   7.25%         December 31, 2000
202 Carnegie Center...........        19,528   7.25%         December 31, 2000
214 Carnegie Center...........        13,726   8.19%(8)      October 31, 2000
101 Carnegie Center...........         8,884   7.66%         April 1, 2006
Montvale Center...............         7,792   8.59%         December 1, 2006
Newport Office Park...........         6,499   8.13%         July 1, 2001
Hilltop Business Center.......         4,417   LIBOR + 1.50% March 15, 1999
201 Carnegie Center...........           558   7.08%         February 1, 2010
                                  ----------
                                  $2,653,581
                                  ==========
</TABLE>
- --------
(1) At maturity the lender has the option to purchase a 33.33% interest in this
    Property in exchange for the cancellation of the loan indebtedness.
(2) Outstanding principal of $213,000 bears interest at a fixed rate of 7.00%.
    The remaining $7,000 bears interest at a floating rate equal to LIBOR +
    1.00%.
(3) The principal amount and interest rate shown has been adjusted to reflect
    the fair value of the note. The actual principal balance at December 31,
    1998 was $150,000 and the interest rate was 8.75%.
(4) The principal amount and interest rate shown has been adjusted to reflect
    the effective rates on the loans. The actual principal balances at December
    31, 1998 were $119,844 and $76,438 respectively. The actual interest rates
    are 8.50% and continue at such rate through the loan expiration.
(5) The principal amount and interest rate shown has been adjusted to reflect
    the fair value of the note. The actual principal balance at December 31,
    1998 was $104,040 and the interest rate was 9.13%.
(6) The principal amount and interest rate shown has been adjusted to reflect
    the fair value of the note. The actual principal balance at December 31,
    1998 was $66,444 and the interest rate was 9.09%.
(7) Includes outstanding indebtedness secured by 91 Hartwell Avenue and 92 and
    100 Hayden Avenue.
(8) The principal amount and interest rate shown has been adjusted to reflect
    the effective rate on the loan. The actual principal balance at December
    31, 1998 was $13,705 and the interest rate was 9.13%.
 
                                       23
<PAGE>
 
   The Company has determined that the adequacy of estimated cash flows as well
as expected liquidity sources are adequate to meet its short-term (up to 12
months) liquidity needs. The Company believes that its principal short-term
liquidity needs are to fund normal recurring expenses, debt service
requirements and the minimum distribution required to maintain the Company's
REIT qualifications under the Internal Revenue Code of 1986, as amended. The
Company believes that these needs will be fully funded from cash flows provided
by operating activities.
 
   The Company expects to meet long-term (greater than 12 months) liquidity
requirements for the costs of development, property acquisitions, scheduled
debt maturities, major renovations, expansions and other non-recurring capital
improvements through the issuance of additional OP Units, Preferred Units and
equity securities of the Company and the incurrence of long-term secured and
unsecured indebtedness. In addition, the Company may finance the development,
redevelopment or acquisition of additional properties by using its Unsecured
Line of Credit.
 
   Rental revenues, operating expense reimbursement income from tenants, and
income from the operations of the Company's majority-owned affiliate, Boston
Properties Management, Inc. (the "Development and Management Company") are the
Company's principal sources of capital to pay its operating expenses, debt
service and recurring capital expenditures. The Company seeks to increase
income from its existing Properties by maintaining quality standards for its
Properties that promote high occupancy rates and permit increases in rental
rates while reducing tenant turnover and controlling operating expenses. The
Development and Management Company's sole source of income are fees generated
by its office and industrial real estate management, leasing, development and
construction businesses. Consequently, the Company believes its revenues will
continue to provide the necessary funds for its operating expenses, debt
service and recurring capital expenditures.
 
   Principal sources of funds for acquisitions are expected to include income
from operations, proceeds of offerings, amounts available under the Unsecured
Line of Credit, long-term secured and unsecured indebtedness and sales of real
estate. In addition to funds from the above sources, the Company may acquire
properties or interests therein through the issuance of OP Units.
 
   During the year ended December 31, 1998, the Company paid or declared
quarterly dividends totaling $1.66 per common share (consisting of $.405
related to quarters ended March 31, 1998 and June 30, 1998 and $.425 for the
quarters ended September 30, 1998 and December 31, 1998). The Company intends
to continue paying dividends quarterly. The Company expects to use cash flows
from operating activities to fund dividends to stockholders.
 
 Funds from Operations
 
   The White Paper of Funds from Operations approved by the Board of Governors
of the National Association of Real Estate Investment Trusts ("NAREIT") in
March 1995 defines Funds from Operations as net income (loss) (computed in
accordance with generally accepted accounting principles), excluding gains (or
losses) from debt restructuring and sales of properties, plus real estate
related depreciation and amortization and after adjustments for unconsolidated
partnerships and joint ventures. The Company believes that Funds from
Operations is helpful to investors as a measure of the performance of the
equity REIT because, along with cash flow from operating activities, financing
activities and investing activities, it provides investors with an indication
of the ability of the Company to incur and service debt, to make capital
expenditures and to fund other cash needs. The Company computes Funds from
Operations in accordance with standards established by NAREIT which may not be
comparable to Funds from Operations reported by other REITs that do not define
the term in accordance with the current NAREIT definition or that interpret the
current NAREIT definition differently than the Company. Funds from Operations
does not represent cash generated from operating activities determined in
accordance with GAAP and should not be considered as an alternative to net
income (determined in accordance with GAAP) as a measure of the Company's
liquidity, nor is it indicative of funds available to fund the Company's cash
needs, including its ability to make cash distributions.
 
                                       24
<PAGE>
 
 Environmental Matters
 
   Some of the Properties are located in urban and industrial areas where fill
or current or historical industrial uses of the areas have caused site
contamination. With respect to all of the Properties, independent environmental
consultants have been retained in the past to conduct or update Phase I
environmental assessments (which generally do not involve invasive techniques
such as soil or ground water sampling) and asbestos surveys on all of the
Properties. These environmental assessments have not revealed any environmental
conditions that the Company believes will have a material adverse effect on its
business, assets or results of operations, and the Company is not aware of any
other environmental condition with respect to any of the Properties which the
Company believes would have such a material adverse effect.
 
   With respect to a property in Massachusetts, the Company received a Notice
of Potential Responsibility from the state regulatory authority on January 9,
1997, related to groundwater contamination. In addition, the Company received a
Notice of Downgradient Property Status Submittal from each of two third parties
concerning alleged contamination at two downgradient properties. On January 15,
1997, the Company notified the state regulatory authority that the Company
would cooperate with and monitor the tenant at the property (which investigated
the matter and undertook remedial actions). That investigation identified the
presence of hazardous substances in and near a catch basin along the property
line. The tenant completed an Immediate Response Action at the site in April
1998. The Company expects the tenant will likewise take any additional
necessary response actions. The lease with the tenant contains a provision
pursuant to which the tenant indemnifies the Company against such liability.
 
   On January 15, 1992, another property in Massachusetts was listed by the
state regulatory authority as an unclassified Confirmed Disposal Site in
connection with groundwater contamination. The Company has engaged a specially
licensed environmental consultant to perform the necessary investigation and
assessment and to prepare submittals to the state regulatory authority. On
August 1, 1997, such consultant submitted to the state regulatory authority a
Phase I--Limited Site Investigation Report and Downgradient Property Status
Opinion. This Opinion concluded that the property qualifies for Downgradient
Property Status under the state regulatory program, which eliminates certain
deadlines for conducting response actions at a site and may qualify the Company
for liability relief under recent statutory amendments. Although the Company
believes that the current or former owners of the upgradient source properties
may ultimately be responsible for some or all of the costs of such response
actions, the Company will take any necessary further response actions.
 
   An investigation at an additional property in Massachusetts identified
groundwater contamination. We engaged a specially licensed environmental
consultant to perform the necessary investigation and assessment and to prepare
submittals to the state regulatory authority. On March 11, 1998, the consultant
submitted to the state regulatory authority a Release Notification and
Downgradient Property Status Opinion. This Opinion concluded that the property
qualifies for Downgradient Property Status under the state regulatory program,
which eliminates certain deadlines for conducting response actions at a site
and may qualify the Company for liability relief under recent statutory
amendments. Although the Company believes that the current or former owners of
the upgradient source properties may ultimately be responsible for some or all
of the costs of such response actions, the Company will take any necessary
further response actions.
 
   The Company expects that any resolution of the environmental matters
relating the above will not have a material impact on the financial position,
results of operations or liquidity of the Company.
 
 Year 2000 Compliance
 
   The Year 2000 issue relates to how computer systems and programs will
recognize and process dates after the year 1999. Most computer systems and
programs, which use two digits to specify a year, if not modified prior to the
year 2000, will be unable to distinguish between the year 1900 and the year
2000. This could result in system failures or miscalculations that could result
in disruptions of normal business operations. The Year 2000 issue can also
affect embedded technology systems and programs of a building such as elevator,
security, energy, fire and safety systems. The Year 2000 issue affects
virtually all companies and organizations.
 
                                       25
<PAGE>
 
   In March of 1998, the Company formed a Year 2000 project team that consists
of Company personnel. The team includes a coordinator from Property Management
in each of its regions and a representative from Legal, Risk Management and
Information Systems. The project team conducts monthly meetings to coordinate a
common work plan, to share information and to review the progress of activities
in each region.
 
   The Year 2000 Project encompasses a review of compliance risks for the
Company's computer information and building systems and is divided into two
phases.
 
   Phase I targets the discovery of issues, an inventory of all building and
internal systems, and an initial assessment of risks. Correspondence has been
sent to vendors, including equipment manufacturers, service providers,
maintenance and utility companies, requesting letters regarding Year 2000
compliance for specific systems. To date responses have been received from over
95% of the vendors with the remaining responses due mostly from vendors doing
business with the Company's most recently acquired properties.
 
   In Phase I, correspondence has been sent to tenants highlighting the Year
2000 issue and providing a general statement of the Company's progress. The
Company has decided not to survey its tenant base, other than its largest
tenant (the General Services Administration), as no other single tenant
represents more than 5% of its annual revues. Due to the Company's large tenant
base, the success of the Company is not closely tied to one particular tenant.
As a result, the Company does not believe there will be a material adverse
effect on the Company's financial condition and results of operations if a
limited number of the Company's tenants were unable to pay rent on a timely
basis due to Year 2000 related problems.
 
   All work related to Phase I has been performed by current employees of the
Company. No third parties have been used during this process nor has the
Company hired an employee specifically for Year 2000 issues, and as a result,
the costs incurred to date relate only to internal payroll costs, which at this
time are not material.
 
   Phase II began in September 1998 and is expected to continue through June
1999. It consists of the following:
 
  .  Continued assessment of risks, including follow up with vendor responses
     deemed inadequate (if any)
 
  .  Remediation of identified compliance problems by June 30, 1999
 
  .  Testing of building systems
 
  .  Development of contingency plans for all systems deemed critical to the
     operation of buildings
 
   The Company expects building-card access, energy management and garage
access systems to commonly require remediation. The replacement of an energy
management system at Embarcadero Center in San Francisco will be completed in
August 1999 and represents the only exception to the Company's current
expectation that all remediation work for building systems will be completed by
June 30, 1999.
 
   Recent upgrades to desktop computers and internal networks throughout the
organization combined with the replacement of the electronic mail and the
accounting systems during 1998 will address Year 2000 compliance issues with
core operating systems. All ancillary software packages that support isolated
functions, including tax reporting, and were non-compliant, were upgraded
before the end of 1998 with the exception of work order processing software
that is currently being replaced at several properties.
 
   The total costs associated with the Year 2000 issue are not expected to be
material to the Company's financial position. The estimated cost of remediation
efforts is approximately $1.6 million, which excludes costs for all internal
personnel working on the project. In most cases, the upgrade of non-compliant
systems will represent an acceleration of a planned replacement date.
 
                                       26
<PAGE>
 
   The Year 2000 project team has adopted a test protocol and procedure.
Property managers, working with service vendors, will conduct tests of building
systems. As of January 31, 1999, successful tests have been carried out and
documented for critical building systems at many properties throughout the
portfolio.
 
   The Company currently does not have a contingency plan in place. The Company
is, however, working with service vendors, and expects that contingency plans
will be developed by the project team by June 30, 1999 for all systems deemed
critical to the operation of buildings. Most systems supporting the operation
of a building can revert to manual operation if necessary.
 
   The discussion above regarding the Company's Year 2000 Project contains
forward-looking statements within the meaning of Section 27A of the Securities
Act of 1933, as amended, and Section 21E of the Securities Exchange Act of
1934, as amended. The Company's assessment of the impact of the Year 2000 issue
may prove to be inaccurate due to a number of factors which cannot be
determined with certainty, including the receipt of inaccurate compliance
certification from third party vendors, inaccurate testing or assessments by
Company personnel of Company equipment or systems, and inaccurate projections
by the Company of the cost of remediation and/or replacement of affected
equipment and systems. A failure by the Company to adequately remediate or
replace affected equipment or systems due to the factors cited above or for
other reasons, a material increase in the actual cost of such remediation or
replacement, or a failure by a third party vendor to remediate Year 2000
problems in systems that are vital to the operation of the Company's properties
or financial systems, could cause a material disruption to the Company's
business and adversely affect its results of operations and financial
condition.
 
 Newly Issued Accounting Standards
 
   In June 1998, the Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards No. 133, "Accounting for Derivative
Instruments and Hedging Activities" ("FAS 133").
 
   FAS 133 requires the following:
 
  .  All derivatives must be carried on the balance sheet at fair value.
 
  .  Changes in the fair value of derivatives must be recognized in income
     when they occur.
 
  .  Companies can use hedge accounting for derivatives that qualify as a
     hedge, to eliminate or reduce the income-statement volatility that would
     arise from reporting changes in a derivative's fair value in income.
 
  .  Extensive disclosure requirements.
 
   The Standard applies to all entities and to all types of derivatives, and is
effective for all fiscal quarters of fiscal years beginning after June 15,
1999.
 
   In November 1998, the FASB issued Statement of Financial Accounting
Standards No. 134, "Accounting for Mortgage-Backed Securities Retained after
the Securitization of Mortgage Loans Held for Sale by a Mortgage Banking
Enterprise" ("FAS 134").
 
   FAS 134 further amends Statement of Financial Accounting Standards No. 65 to
specify that, after the securitization of mortgage loans that are held for
sale, an entity that is engaged in mortgage banking activities must classify
the resulting mortgage-backed securities or other retained interests based on
its ability and intent to sell or hold those investments.
 
   FAS 134 is effective for the first fiscal quarter beginning after December
15, 1998.
 
   In January of 1999, the FASB issued Statement of Financial Accounting
Standards No. 135 ("FAS 135"). FAS 135 rescinds Statement of Financial
Accounting Standards No. 75, "Deferral of the Effective Date of
 
                                       27
<PAGE>
 
Certain Accounting Requirements for Pension Plans of State and Local
Governmental Units". This Statement also amends Statement of Financial
Accounting Standards No. 35, "Accounting and Reporting by Defined Benefit
Pension Plans," to exclude from its scope plans that are sponsored by and
provide benefits for the employees of one or more state or local governmental
units. This Statement is effective for financial statements issued for fiscal
years ending after February 15, 1999.
 
   The Company does not believe that the implementation of FAS 133, FAS 134 or
FAS 135 will have a material impact on the Company's financial statements.
 
 Inflation
 
   Substantially all of the office leases provide for separate real estate tax
and operating expense escalations over a base amount. In addition, many of the
leases provide for fixed base rent increases or indexed increases. The Company
believes that inflationary increases may be at least partially offset by the
contractual rent increases described above.
 
Item 7a. Quantitative and Qualitative Disclosures about Market Risk
 
   Market risk is the risk of loss from adverse changes in market prices and
interest rates. The primary market risk facing the Company is interest rate
risk on its mortgage notes payable. Approximately $2.64 billion of the
Company's mortgage debt bears interest at fixed rates, and therefore the fair
value of these instruments is affected by changes in the market interest rates.
The following table presents principal cash flows (in thousands) based upon
maturity dates of the debt obligations and the related weighted average
interest rates by expected maturity dates for the fixed rate debt. The interest
rate of the variable rate debt as of December 31, 1998 ranged from LIBOR plus
1.00% to LIBOR plus 1.50%.
 
<TABLE>
<CAPTION>
                                         Mortgage debt, including current portion
                         ------------------------------------------------------------------------------
                          1999     2000     2001     2002     2003    Thereafter    Total    Fair Value
                         -------  -------  -------  -------  -------  ----------  ---------- ----------
<S>                      <C>      <C>      <C>      <C>      <C>      <C>         <C>        <C>
Fixed Rate.............. $26,940  233,075  146,059  378,394  206,853  2,090,403   $3,081,724 $3,081,724
Average Interest Rate...    7.05%    7.13%    7.89%    7.38%    7.54%      6.83%
Variable Rate...........     --       --       --   $ 7,000      --         --    $    7,000 $    7,000
</TABLE>
 
Item 8. Financial Statements and Supplementary Data
 
   See "Index to Financial Statements" on page F-1 of this Form 10-K.
 
Item 9. Changes in and Disagreements with Accountants on Accounting and
Financial Disclosures
 
   None.
 
                                       28

<PAGE>
 
                                    PART III
 
Item 10. Directors and Executive Officers of the Registrant
 
   The information concerning Directors and Executive Officers of the
Registrant required by Item 10 shall be included in the Proxy Statement to be
filed relating to the 1999 Annual Meeting of the Registrant's Stockholders and
is incorporated herein by reference.
 
Item 11. Executive Compensation
 
   The information concerning Executive Compensation required by Item 11 shall
be included in the Proxy Statement to be filed relating to the 1999 Annual
Meeting of the Registrant's Stockholders and is incorporated herein by
reference.
 
Item 12. Security Ownership of Beneficial Owners and Management
 
   The information concerning Directors and Executive Officers of the
Registrant required by Item 12 shall be included in the Proxy Statement to be
filed relating to the 1999 Annual Meeting of the Registrant's Stockholders and
is incorporated herein by reference.
 
Item 13. Certain Relationships and Related Transactions
 
   The information concerning Directors and Executive Officers of the
Registrant required by Item 13 shall be included in the Proxy Statement to be
filed relating to the 1999 Annual Meeting of the Registrant's Stockholders and
is incorporated herein by reference.
 
                                       29
<PAGE>
 
                                    PART IV
 
ITEM 14. Exhibits, Financial Statement Schedule and Reports on Form 8-K
 
     (a) Financial Statements and Financial Statement Schedule
 
      See "Index to Financial Statements" on page F-1 on this Form 10-K.
 
     (b) Reports on Form 8-K
 
   A report on Form 8-K was filed on January 12, 1998 which included
information regarding Item 5. The Form 8-K was filed in connection with the
Company's press release regarding the potential acquisition of The Prudential
Center.
 
   A report on Form 8-K was filed on January 26, 1998 which included
information regarding Item 5. The Form 8-K was filed in connection with the
Company's press release regarding the Company's fourth quarter 1997 earnings.
 
   A report on Form 8-K was filed on February 6, 1998 which included
information regarding Item 2, 5 and 7. Included in Item 7 was pro forma
information and exhibits. The Form 8-K was filed in connection with the
Company's acquisition of Riverfront Plaza and the Mulligan/Griffin Portfolio.
 
   A report on Form 8-K was filed on June 9, 1998 which included information
regarding Item 5. The Form 8-K was filed in connection with information
presented to investors and analysts.
 
   A report on Form 8-K was filed on July 15, 1998 (as amended by Form 8-K/A
filed on August 25, 1998) which included information regarding Item 2, 5 and 7.
Included in Item 7 was pro forma information and exhibits. The Form 8-K was
filed in connection with the Company's acquisition of the Carnegie Center
portfolio.
 
   A report on Form 8-K was filed on July 17, 1998 (as amended by Form 8-K/A
filed on August 25, 1998) which included information regarding Item 2, 5 and 7.
Included in Item 7 was pro forma information and exhibits. The Form 8-K was
filed in connection with the Company's acquisition of The Prudential Center.
 
   A report on Form 8-K was filed on July 27, 1998 (as amended by Form 8-K/A
filed on August 25, 1998) which included information regarding Item 2, 5 and 7.
Included in Item 7 was pro forma information and exhibits. The Form 8-K was
filed in connection with the Company's acquisition of Metropolitan Square.
 
   A report on Form 8-K was filed on October 27, 1998 which included
information regarding Item 5. The Form 8-K was filed in connection with the
Company's press release regarding the Company's third quarter 1998 earnings and
information presented to investors and analysts.
 
   A report on Form 8-K was filed on November 25, 1998 (as amended by Form 8-
K/A filed on January 26, 1999) which included information regarding Item 2, 5
and 7. Included in Item 7 was pro forma information and exhibits. The Form 8-K
was filed in connection with the Company's acquisition of Embarcadero Center.
 
   A report on Form 8-K was filed on January 27, 1999 which included
information regarding Item 5. The Form 8-K was filed in connection with the
Company's press release regarding the Company's fourth quarter 1998 earnings.
 
                                       30
<PAGE>
 
     (c) Exhibits
 
<TABLE>
<CAPTION>
   Exhibit No.                            Description
   -----------                            -----------
   <C>         <S>
    3.1        Form of Amended and Restated Certificate of Incorporation of the
               Company (2)
    3.2        Form of Amended and Restated Bylaws of the Company (2)
    4.1        Form of Shareholder Rights Agreement dated as of June , 1997
               between the Company and BankBoston, N.A., as Rights Agent (2)
    4.2        Form of Certificate of Designation for Series E Junior
               Participating Cumulative Preferred Stock, par value $.01 per
               share (2)
    4.3        Form of Certificate of Designations for the Series A Preferred
               Stock. (9)
    4.4        Form of Common Stock Certificate (2)
   10.1        Second Amended and Restated Agreement of Limited Partnership of
               the Operating Partnership, dated as of June 29, 1998. (6)
   10.2        Certificate of Designations for the Series One Preferred Units,
               dated June 30, 1998, constituting an amendment to the Second
               Amended and Restated Agreement of Limited Partnership of the
               Operating Partnership. (6)
   10.3        Certificate of Designations for the Series Two Preferred Units,
               dated November 12, 1998, constituting an amendment to the Second
               Amendment and Restated Agreement of Limited Partnership of the
               Operating Partnership. (9)
   10.4        Certificate of Designations for the Series Three Preferred
               Units, dated November 12, 1998, constituting an amendment to the
               Second Amended and Restated Agreement of Limited Partnership of
               the Operating Partnership. (9)
   10.5        1997 Stock Option and Incentive Plan (2)
   10.6        Form of Noncompetition Agreement between the Company and
               Mortimer B. Zuckerman (2)
   10.7        Form of Employment and Noncompetition Agreement between the
               Company and Edward H. Linde. (2)
   10.8        Form of Employment Agreement between the Company and certain
               executive officers (2)
   10.9        Form of Indemnification Agreement between the Company and each
               of its directors and executive officers (2)
   10.10       Omnibus Option Agreement by and among the Operating Partnership
               and the Grantors named therein dated as of April 9, 1997 (2)
   10.11       Revolving Credit Agreement with BankBoston, N.A. (2)
   10.12       Form of Registration Rights Agreement among the Company and the
               persons named therein (2)
   10.13       Form of Lease Agreement dated as of June , 1997 between Edward
               H. Linde and Mortimer B. Zuckerman, as Trustees of Downtown
               Boston Properties Trust, and ZL Hotel LLC (2)
   10.14       Form of Lease Agreement dated as of June , 1997 between Edward
               H. Linde and Mortimer B. Zuckerman, as Trustees of Two Cambridge
               Center Trust, and ZL Hotel LLC (2)
   10.15       Option Agreement between Boston Properties Limited Partnership
               and Square 36 Properties Limited Partnership dated April 15,
               1997 (2)
   10.16       Form of Certificate of Incorporation of Boston Properties
               Management, Inc (2)
   10.17       Form of By-laws of Boston Properties Management, Inc. (2)
   10.18       Form of Limited Liability Agreement of ZL Hotel LLC (2)
   10.19       Form of Option Agreement to Acquire the Property known as Sumner
               Square(2)
   10.20       Loan Modification Agreement between Lexreal Associates and
               Mitsui Seimei America Corporation relating to loan secured by
               599 Lexington Avenue (2)
   10.21       Loan Modification and Extension Agreement by and between
               Southwest Market Limited Partnership, a District of Columbia
               limited partnership, Mortimer B. Zuckerman and Edward H. Linde
               and the Sumitomo Bank, Limited, for One Independence Square,
               dated as of September 26, 1994 (2)
</TABLE>
 
                                       31

<PAGE>
 
<TABLE>
<CAPTION>
   Exhibit No.                            Description
   -----------                            -----------
   <C>         <S>
   10.22       Loan Modification and Extension Agreement by and among Southwest
               Market Limited Partnership, a District of Columbia limited
               partnership, Mortimer B. Zuckerman and Edward H. Linde and the
               Sumitomo Bank, Limited, for Two Independence Square, dated as of
               September 26, 1994 (2)
   10.23       Construction Loan Agreement by and between the Sumitomo Bank,
               Limited and Southwest Market Limited Partnership, dated as of
               August 21, 1990 (2)
   10.24       Construction Loan Agreement by and between the Sumitomo Bank,
               Limited and Southwest Market Limited Partnership for Two
               Independence Square, dated as of February 22, 1991 (2)
   10.25       Consent and Loan Modification Agreement regarding One
               Independence Square between the Sumitomo Bank, Limited and
               Southwest Market Limited Partnership dated as of June, 1997 (2)
   10.26       Consent and Loan Modification Agreement regarding Two
               Independence Square between the Sumitomo Bank, Limited and
               Southwest Market Limited Partnership dated as of June, 1997 (2)
   10.27       Form of Amended and Restated Loan Agreement between Square 36
               Office Joint Venture and the Sanwa Bank Limited dated as of June
               , 1997 (2)
   10.28       Indemnification Agreement between the Operating Partnership and
               Mortimer B. Zuckerman and Edward H. Linde (2)
   10.29       Compensation Agreement between the Company and Robert Selsam,
               dated as of August 10, 1995 relating to 90 Church Street (2)
   10.30       Contribution Agreement dated September 2, 1997 by and among the
               Operating Partnership, the Company and Kenvic Associates (5)
   10.31       Lock-Up and Registration Rights Agreement dated November 21,
               1997 by and among the Operating Partnership, the Company and
               Kenvic Associates (1)
   10.32       Agreement dated November 21, 1997 by and between the Operating
               Partnership, the Company and Kenvic Associates (1)
   10.33       Note and Mortgage Modification and Spreader Agreement between
               John Hancock, as lender, and the Operating Partnership, as
               borrower (1)
   10.34       Agreement between Bankers Trust Company, as seller, and the
               Operating Partnership, as borrower, dated September 11, 1997 (3)
   10.35       Term loan agreement between Chase Manhattan Bank, as lender, and
               the Operating Partnership, as borrower, dated September 11, 1997
               (4)
   10.36       Swap Transaction Agreement between the Chase Manhattan Bank and
               the Company dated November 4, 1997 (3)
   10.37       Interest Guarantee and Agreement between Chase Manhattan Bank,
               as lender, and the Operating Partnership, as borrower, dated
               September 11, 1997 (4)
   10.38       Net Cash Flow Shortfall Guarantee and Agreement between Chase
               Manhattan Bank, as lender, and the Operating Partnership, as
               borrower, dated September 11, 1997 (4)
   10.39       Hazardous Material Guaranty and Indemnification Agreement
               between Chase Manhattan Bank, as lender, and the Operating
               Partnership, as borrower, dated September 11, 1997 (4)
   10.40       Amended and Restated Real Estate Purchase and Sale Contract
               between International Business Machines Corporation, as seller,
               and the Operating Partnership, as buyer, dated October 20, 1997
               (4)
   10.41       First Amendment to Revolving Credit Agreement dated July 29,
               1997 by and among the Company, BankBoston, N.A., and the
               subsidiaries of the Company and lending institutions named
               therein (5)
   10.42       Second Amendment to Revolving Credit Agreement dated July 30,
               1997 by and among the Company, BankBoston, N.A., and the
               subsidiaries of the Company and lending institutions named
               therein (5)
</TABLE>
 
                                       32

<PAGE>
 
<TABLE>
<CAPTION>
   Exhibit No.                            Description
   -----------                            -----------
   <C>         <S>
   10.43       Third Amendment to Revolving Credit Agreement dated September
               11, 1997 by and among the Company, BankBoston, N.A., and the
               subsidiaries of the Company and lending institutions named
               therein (5)
   10.44       Fourth Amendment to Revolving Credit Agreement dated October 31,
               1997 by and among the Company, BankBoston, N.A., and the
               subsidiaries of the Company and lending institutions named
               therein (5)
   10.45       Environmental Indemnity and Agreement made by the Operating
               Partnership in favor of John Hancock Mutual Life Insurance
               Company (1)
   10.46       Indemnification Agreement made by the Operating Partnership in
               favor of John Hancock Mutual Life Insurance Company (1)
   10.47       Consolidation, Extension and Modification Agreement dated as of
               May 11, 1988 by and between Kenvic Associates and John Hancock
               Mutual Life Insurance Company (1)
   10.48       Modification Agreement dated as of May 30, 1990 by and between
               Kenvic Associates and John Hancock Mutual Life Insurance Company
               (1)
   10.49       Note and Mortgage Notification Agreement, dated July 23, 1992 by
               and between Kenvic Associates and John Hancock Mutual Life
               Insurance Company (2)
   10.50       Note and Mortgage Modification and Spreader Agreement dated as
               of December 29, 1995 by and between Kenvic Associates and John
               Hancock Mutual Life Insurance Company (1)
   10.51       Contribution Agreement dated November 26, 1997 the Operating
               Partnership, Boston Properties LLC and the Contributors named
               therein. (1)
   10.52       Promissory Note dated January , 1998 between the Operating
               Partnership and Metropolitan Life Insurance Company (1)
   10.53       Deed of Trust, Security Agreement and Fixture Filing dated
               January , 1998 (1)
   10.54       Unsecured Indemnity Agreement dated January , 1998 (1)
   10.55       Contribution and Conveyance Agreement concerning the Carnegie
               Portfolio, dated June 30, 1998 by and among the Company, the
               Operating Partnership, and the parties named therein as Landis
               Parties. (6)
   10.56       Contribution Agreement, dated June 30, 1998, by and among the
               Company, the Operating Partnership, and the parties named
               therein as Landis Parties. (6)
   10.57       Registration Rights and Lock-Up Agreement, dated June 30, 1998
               by and among the Company, the Operating Partnership and the
               parties named therein as Holders. (6)
   10.58       Non-Competition Agreement, dated as of June 30, 1998, by and
               between Alan B. Landis and the Company. (6)
   10.59       Agreement Regarding Directorship, dated as of June 30, 1998, by
               and between the Company and Alan B. Landis. (6)
   10.60       Purchase and Sale Agreement, dated May 7, 1998, by and between
               Prudential and the Operating Partnership. (7)
   10.61       Contribution Agreement, dated as of May 7, 1998, by and between
               Prudential and the Operating Partnership. (7)
   10.62       Registration Rights Agreement, dated as of July 2, 1998, by and
               among the Registrant, Strategic Value Investors II, LLC and
               Prudential. (7)
   10.63       Contribution Agreement dated June 5, 1998, by and among Boston
               Properties Limited Partnership, Boston Properties LLC, Square
               224 Associates and the Oliver Carr Company. (8)
   10.64       Registration Rights and Lock-up Agreement, dated as of July 9,
               1998, by and between Boston Properties, Inc. and Square 224
               Associates. (8)
   10.65       Purchase and Sale Agreement, dated as of November 12, 1998, by
               and between Two Embarcadero Center West and BP OFR LLC. (9)
   10.66       Contribution Agreement, dated as of November 12, 1998, by and
               among the Company, The Operating Partnership, Embarcadero Center
               Investors Partnership ("ECIP") and the partners in ECIP listed
               on Exhibit A thereto. (9)
</TABLE>
 
                                       33

<PAGE>

 
<TABLE>
<CAPTION>
   Exhibit No.                            Description
   -----------                            -----------
   <C>         <S>
   10.67       Contribution Agreement, dated as of November 12, 1998, by and
               among the Company, the Operating Partnership, Three Embarcadero
               Center West ("Three ECW") and the partners in Three ECW listed
               on Exhibit A thereto. (9)
   10.68       Three ECW Redemption Agreement, dated as of November 12, 1998,
               by and among Three ECW, the Operating Partnership, BP EC West
               LLC, Prudential, PIC Realty Corporation ("PIC") and Prudential
               Realty Securities II, Inc. ("PRS II").(9)
   10.69       Three ECW Property Contribution Agreement, dated as of November
               12, 1998, by and among Three ECW, Prudential, PIC, PRS II, the
               Operating Partnership, the Company and BP EC West LLC. (9)
   10.70       Registration Rights and Lock-Up Agreement, dated November 12,
               1998, by and among the Company, the Operating Partnership and
               the Holders named therein.(9)
   10.71       Third Amended and Restated Partnership Agreement of One
               Embarcadero Center Venture, dated as of November 12, 1998, by
               and between Boston Properties LLC ("BPLLC"), as managing general
               partner, BP EC1 Holdings LLC ("BP EC1 LLC"), as non-managing
               general partner, and PIC, as non-managing general partner (9)
   10.72       Third Amended and Restated Partnership Agreement of Embarcardero
               Center Associates, dated as of November 12, 1998, by and between
               BP LLC, as managing general partner, BP EC2 Holdings LLC ("BP
               EC2 LLC"), as non-managing general partner, and PIC, as non-
               managing general partner. (9)
   10.73       Second Amended and Restated Partnership Agreement of Three
               Embarcadero Center Venture, dated as of November 12, 1998, by
               and between BPLLC, as managing general partner, BP EC3 Holdings
               LLC ("BP EC3 LLC"), as non-managing general partner, and
               Prudential, as non-managing general partner. (9)
   10.74       Second Amended and Restated Partnership Agreement of Four
               Embarcadero Center Venture, dated as of November 12, 1998, by
               and between BPLLC, as managing general partner, BP EC4 Holdings
               LLC ("BP EC4 LLC"), as non-managing general partner, and
               Prudential, as non-managing general partner. (9)
   10.75       Note Purchase Agreement, dated as of November 12, 1998, by and
               between Prudential Realty Securities, Inc. ("PRS") and One
               Embarcadero Center Venture. (9)
   10.76       Note Purchase Agreement, dated as of November 12, 1998, by and
               between PRS and Embarcadero Center Associates. (9)
   10.77       Note Purchase Agreement, dated November 12, 1998, by and between
               PRS and Three Embarcadero Center Venture. (9)
   10.78       Note Purchase Agreement, dated November 12, 1998, by and between
               PRS and Four Embarcadero Center Venture. (9)
   10.79       Redemption Agreement, dated as of November 12, 1998, by and
               among One Embarcadero Center Venture, BPLLC, BP EC1 LLC and PIC.
               (9)
   10.80       Redemption Agreement, dated as of November 12, 1998, by and
               among Embarcadero Center Associates, BPLLC, BP EC2 LLC and PIC.
               (9)
   10.81       Redemption Agreement, dated as of November 12, 1998, by and
               among Three Embarcadero Center Venture, BPLLC, BP EC3 LLC and
               Prudential. (9)
   10.82       Redemption Agreement, dated as on November 12, 1998, by and
               among Four Embarcadero Center Venture, BPLLC, BP EC4 LLC and
               Prudential. (9)
   10.83       Option and Put Agreement, dated as of November 12, 1998, by and
               between One Embarcadero Center Venture and Prudential. (9)
   10.84       Option and Put Agreement, dated as of November 12, 1998, by and
               between Embarcadero Center Associates and Prudential. (9)
   10.85       Option and Put Agreement, dated as of November 12, 1998, by and
               between Three Embarcadero Center Venture and Prudential. (9)
</TABLE>
 
                                       34
<PAGE>
 
<TABLE>
<CAPTION>
   Exhibit No.                            Description
   -----------                            -----------
   <C>         <S>
   10.86       Option and Put Agreement, dated as of November 12, 1998, by and
               between Four Embarcadero Center Venture and Prudential. (9)
   10.87       Stock Purchase Agreement, dated as of September 28, 1998, by and
               between the Company and Prudential. (9)
   21.1        Schedule of Subsidiaries of the Company (1)
   23.1        Consent of PricewaterhouseCoopers LLP, Independent Accountants
   27.1        Financial Data Schedule
</TABLE>
- --------
(1) Incorporated herein by reference to the Company's Registration Statement on
    Form S-11 (No. 333-41449)
(2) Incorporated herein by reference to the Company's Registration Statement on
    Form S-11 (No. 333-25279)
(3) Incorporated herein by reference to the Company's Current Report on Form 8-
    K filed on November 25, 1997
(4) Incorporated herein by reference to the Company's Current Report on Form 8-
    K/A filed on November 14, 1997
(5) Incorporated herein by reference to the Company's Current Report on Form 8-
    K filed on November 26, 1997
(6)  Incorporated herein by reference to the Company's Current Report on Form
     8-K filed on July 15, 1998.
(7) Incorporated herein by reference to the Company's Current Report on Form 8-
    K filed on July 17, 1998.
(8) Incorporated herein by reference to the Company's Current Report on Form 8-
    K filed on July 27, 1998.
(9) Incorporated herein by reference to the Company's Current Report on Form 8-
    K filed on November 25, 1998.
 
                                       35
<PAGE>
 
                                   SIGNATURES
 
   Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant, Boston Properties, Inc., has duly caused
this report to be signed on its behalf by the undersigned, thereunto duly
authorized.
 
                                          BOSTON PROPERTIES, INC.
 
                                          By: /s/ David G. Gaw
                                             ----------------------------------
                                                      David G. Gaw
                                                 Chief Financial Officer
 
Date March 31, 1999
 
   Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.
 
   March 31, 1998                         By: /s/ Mortimer B. Zuckerman
                                             ----------------------------------
                                          Mortimer B. Zuckerman
                                          Chairman of the Board of Directors
 
                                          By: /s/ Edward H. Linde
                                             ----------------------------------
                                          Edward H. Linde
                                          President and Chief Executive
                                          Officer
 
                                          By: /s/ David G. Gaw
                                             ----------------------------------
                                          David G. Gaw
                                          Chief Financial Officer
 
                                          By: /s/ Alan J. Patricof
                                             ----------------------------------
                                          Alan J. Patricof
                                          Director
 
                                          By: /s/ Ivan G. Seidenberg
                                             ----------------------------------
                                          Ivan G. Seidenberg
 
                                          By: /s/ Martin Turchin
                                             ----------------------------------
                                          Martin Turchin
                                          Director
 
                                          By: /s/ Alan B. Landis
                                             ----------------------------------
                                          Alan B. Landis
                                          Director
 
                                          By: /s/ Richard E. Salomon
                                             ----------------------------------
                                          Richard E. Salomon
                                          Director
 
 
                                       36
<PAGE>
 
                 BOSTON PROPERTIES, INC. AND BOSTON PROPERTIES
                               PREDECESSOR GROUP
            INDEX TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS
 
                              FINANCIAL STATEMENTS
<TABLE>
<CAPTION>
                                                                           Page
                                                                           ----
<S>                                                                        <C>
  Report of Independent Accountants.......................................  F-2
  Consolidated Balance Sheet of Boston Properties, Inc. (the "Company")
    as of December 31, 1998 and December 31, 1997.........................  F-3
  Consolidated Statement of Operations of the Company for the year ended
    December 31, 1998 and for the period from June 23, 1997
    (inception of operations) to December 31, 1997and Combined
    Statements of Operations for the Predecessor Group for the period
    from January 1, 1997 to June 22, 1997 and the year ended
    December 31, 1996.....................................................  F-4
  Consolidated Statement of Changes in Stockholders' Equity of the Company
    For the year ended December 31, 1998 and for the period June 23, 1997
    (inception of operations) to December 31, 1997 and the Combined
    Statement of Changes in Owners' Equity (Deficit) of the Predecessor
    Group for the period January 1, 1997 to June 22, 1997 and the year
     ended
    December 31, 1996.....................................................  F-5
  Consolidated Statement of Cash Flows of the Company for the year ended
    December 31, 1998 and for the period June 23, 1997 (inception of
    operations) to December 31, 1997and Combined Statement of Cash
    Flows of the Predecessor Group for the period January 1, 1997 to
    June 22, 1997 and the year ended December 31, 1996....................  F-6
  Notes to Consolidated and Combined Financial Statements.................  F-7
  Financial Statement Schedule--Schedule III.............................. F-22
</TABLE>
 
  All other schedules for which provision is made in the applicable
  accounting regulations of the Securities and Exchange Commission are not
  required under the related instructions or are inapplicable, and therefore
  have been omitted.
 
                                      F-1
<PAGE>
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Stockholders of
Boston Properties, Inc.
 
   In our opinion, the accompanying consolidated balance sheets, the related
consolidated and combined statements of operations, stockholders' equity and
cash flows, presents fairly, in all material respects, (i) the financial
position of Boston Properties, Inc. (the "Company") at December 31, 1998 and
1997, the results of operations and cash flows for the year ended December 31,
1998 and the period from June 23, 1997 to December 31, 1997, and (ii) as
described in Note 1, the combined statements of operations and cash flows for
the period from January 1, 1997 to June 22, 1997 and for the year ended
December 31, 1996 of the Boston Properties Predecessor Group in conformity with
generally accepted accounting principles. These financial statements are the
responsibility of the Company's management; our responsibility is to express an
opinion on these financial statements based on our audits. We conducted our
audits of these statements in accordance with generally accepted auditing
standards, which require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements, assessing
the accounting principles used and significant estimates made by management,
and evaluating the overall financial statement presentation. We believe that
our audits provide a reasonable basis for the opinion expressed above.
 
Boston, Massachusetts
January 24, 1999, except for
Note 16 as to which the date is February 10, 1999
 
                                      F-2
<PAGE>
 
                            BOSTON PROPERTIES, INC.
 
                          CONSOLIDATED BALANCE SHEETS
 
<TABLE>
<CAPTION>
        December 31, December 31,
            1998         1997
        ------------ ------------
            (in thousands, except
               share amounts)
<S>     <C>          <C>          <C>
ASSETS
</TABLE>
 
<TABLE>
<S>                                                      <C>         <C>
Real estate:
  Less: accumulated depreciation........................ $4,917,193  $1,796,500
    Total real estate...................................   (357,384)   (294,218)
                                                         ----------  ----------
                                                          4,559,809   1,502,282
Cash and cash equivalents...............................     12,166      17,560
Notes receivable........................................    420,143         --
Escrows.................................................     19,014      14,178
Tenant and other receivables, net.......................     40,830      24,458
Accrued rental income, net..............................     64,251      55,190
Deferred charges, net...................................     46,029      35,485
Prepaid expenses and other assets.......................     26,058      20,225
Investments in joint ventures...........................     46,787       3,143
                                                         ----------  ----------
    Total assets........................................ $5,235,087  $1,672,521
                                                         ==========  ==========
</TABLE>
 
<TABLE>
<S>                                   <C>
LIABILITIES AND STOCKHOLDERS' EQUITY
</TABLE>
 
<TABLE>
<S>                                                      <C>         <C>
Liabilities:
  Mortgage notes payable................................ $2,653,581  $1,099,253
  Notes payable.........................................    420,143         --
  Unsecured line of credit..............................     15,000     233,000
  Accounts payable and accrued expenses.................     33,638      23,822
  Dividends payable.....................................     40,494      22,539
  Accrued interest payable..............................      7,307       6,581
  Other liabilities.....................................     37,209      11,642
                                                         ----------  ----------
    Total liabilities...................................  3,207,372   1,396,837
                                                         ----------  ----------
Commitments and contingencies...........................        --          --
                                                         ----------  ----------
Minority interests......................................  1,079,234     100,636
                                                         ----------  ----------
Stockholders' equity:
  Preferred stock, $.01 par value, 50,000,000 shares
   authorized, none
   issued or outstanding................................        --          --
  Excess stock, $.01 par value, 150,000,000 shares
   authorized, none
   issued or outstanding................................        --          --
  Common stock, $.01 par value, 250,000,000 shares
   authorized,
   63,527,819 and 38,694,041 issued and outstanding in
   1998 and 1997, respectively..........................        635         387
  Additional paid-in capital............................    955,711     172,347
  Dividends in excess of earnings.......................     (7,865)      2,314
                                                         ----------  ----------
    Total stockholders' equity..........................    948,481     175,048
                                                         ----------  ----------
      Total liabilities and stockholders' equity........ $5,235,087  $1,672,521
                                                         ==========  ==========
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                      F-3
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
               CONSOLIDATED AND COMBINED STATEMENTS OF OPERATIONS
                     (in thousands, except per share data)
 
<TABLE>
<CAPTION>
                                 The Company            The Predecessor Group
                          -------------------------- ----------------------------
                                        Period from
                                       June 23, 1997   Period from
                           Year ended       to       January 1, 1997  Year ended
                          December 31, December 31,        to        December 31,
                              1998         1997       June 22, 1997      1996
                          ------------ ------------- --------------- ------------
<S>                       <C>          <C>           <C>             <C>
Revenue
  Rental:
   Base rent............    $419,756     $126,401       $ 80,122       $169,420
   Recoveries from
    tenants.............      48,718       12,564         10,283         22,607
   Parking and other....      19,103          676          3,397          2,979
                            --------     --------       --------       --------
     Total rental
      revenue...........     487,577      139,641         93,802        195,006
  Hotel.................         --           --          31,185         65,678
  Development and
   management services..      12,411        3,813          3,685          5,719
  Interest and other....      13,859        2,189          1,146          3,530
                            --------     --------       --------       --------
     Total revenue......     513,847      145,643        129,818        269,933
                            --------     --------       --------       --------
Expenses
  Rental:
   Operating............      80,894       19,591         13,650         29,823
   Real estate taxes....      69,596       20,502         13,382         28,372
  Hotel:
   Operating............         --           --          20,938         43,634
   Real estate taxes....         --           --           1,514          3,100
  General and
   administrative.......      22,504        6,689          5,116         10,754
  Interest..............     124,860       38,264         53,324        109,394
  Depreciation and
   amortization.........      75,418       21,719         17,054         36,199
                            --------     --------       --------       --------
     Total expenses.....     373,272      106,765        124,978        261,276
                            --------     --------       --------       --------
Income before minority
 interests..............     140,575       38,878          4,840          8,657
Minority interests......     (41,982)     (11,652)          (235)          (384)
                            --------     --------       --------       --------
Income before
 extraordinary items....      98,593       27,226          4,605          8,273
Extraordinary gain
 (loss) from early debt
 extinguishments, net...      (5,481)       7,925            --            (994)
                            --------     --------       --------       --------
Net income..............    $ 93,112     $ 35,151       $  4,605       $  7,279
                            ========     ========       ========       ========
Basic earnings per
 share:
  Income before
   extraordinary items..    $   1.62     $   0.70            --             --
  Extraordinary gain
   (loss), net..........       (0.09)        0.21            --             --
                            --------     --------
  Net income............    $   1.53     $   0.91            --             --
                            ========     ========
  Weighted average
   number of common
   shares outstanding...      60,776       38,694            --             --
Diluted earnings per
 share:
  Income before
   extraordinary items..    $   1.61     $   0.70            --             --
  Extraordinary gain
   (loss), net..........       (0.09)        0.20            --             --
                            --------     --------
  Net income............    $   1.52     $   0.90            --             --
                            ========     ========
  Weighted average
   number of common
   shares outstanding...      61,308       39,108            --             --
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                      F-4
<PAGE>
 
        BOSTON PROPERTIES, INC. AND BOSTON PROPERTIES PREDECESSOR GROUP
 
    CONSOLIDATED AND COMBINED STATEMENTS OF STOCKHOLDERS" AND OWNER' EQUITY
                                   (DEFICIT)
                                 (in thousands)
 
<TABLE>
<CAPTION>
                         Common Stock
                         -------------
                                       Additional   Dividends
                                        Paid-in    in excess of Owners' Equity
                         Shares Amount  Capital      Earnings     (Deficit)      Total
                         ------ ------ ----------  ------------ -------------- ---------
<S>                      <C>    <C>    <C>         <C>          <C>            <C>
The Predecessor Group:
  Balance, January 1,
   1996.................                                          $(506,653)   $(506,653)
    Contributions.......                                             33,279       33,279
    Net income for the
     year...............                                              7,279        7,279
    Distributions and
     conversion of
     equity to note
     payable--
     affiliate..........                                           (110,537)    (110,537)
                                                                  ---------    ---------
  Balance, December 31,
   1996.................                                           (576,632)    (576,632)
    Contributions.......                                              9,330        9,330
    Net income for
     period January 1,
     1997 through June
     22, 1997...........                                              4,605        4,605
    Distributions.......                                            (32,125)     (32,125)
                                                                  ---------    ---------
  Balance, June 22,
   1997.................                                           (594,822)    (594,822)
The Company:
  Reclassification
   adjustment...........                ($594,822)                  594,822          --
  Sale of Common Stock
   net of Offering
   costs................ 38,694  $387     838,822                                839,209
  Stock issued in
   connection with
   property
   acquisition..........                       16                                     16
  Allocation of minority
   interest in Operating
   Partnership..........                  (71,669)                              (71,669)
  Net income, June 23,
   1997 to December 31,
   1997.................                             $  35,151                    35,151
  Dividends declared....                               (32,837)                  (32,837)
                         ------  ----  ----------   ----------    ---------    ---------
  Stockholders' Equity,
   December 31, 1997.... 38,694   387     172,347        2,314          --       175,048
  Sale of Common Stock
   net of Offering
   costs................ 23,000   230     764,760                                764,990
  Unregistered Common
   Shares issued........  1,823    18      58,819                                 58,837
  Conversion of
   operating partnership
   units to common
   stock................     10   --          250                                    250
  Allocation of minority
   interest.............                  (40,490)                               (40,490)
  Net income for the
   year.................                                93,112                    93,112
  Dividends declared....                              (103,291)                 (103,291)
  Stock options
   exercised............      1   --           25                                     25
                         ------  ----  ----------   ----------    ---------    ---------
  Stockholders' Equity,
   December 31, 1998.... 63,528  $635  $  955,711   $   (7,865)   $     --     $ 948,481
                         ======  ====  ==========   ==========    =========    =========
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                      F-5
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
               CONSOLIDATED AND COMBINED STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                      The Company                   The Predecessor Group
                          ----------------------------------- ---------------------------------
                                               Period from      Period from
                                              June 23, 1997   January 1, 1997
                             Year ended            to               to           Year ended
                          December 31, 1998 December 31, 1997  June 22, 1997  December 31, 1996
                          ----------------- ----------------- --------------- -----------------
<S>                       <C>               <C>               <C>             <C>
Cash flows from
 operating activities:
 Net income.............     $    93,112        $  35,151        $  4,605         $   7,279
 Adjustments to
  reconcile net income
  to net cash provided
  by operating
  activities:
  Depreciation and
   amortization.........          75,418           21,719          17,054            36,199
  Non-cash portion of
   interest expense.....             247              547           1,497               644
  Extraordinary loss
   (gain) on early debt
   extinguishments......           7,743          (11,216)            --                --
  Minority interests....          38,760            7,659             --                --
 Change in assets and
  liabilities:
  Escrows...............          (4,836)          11,429            (136)            2,242
  Tenant and other
   receivables, net.....         (16,372)          (5,295)         (7,114)            2,313
  Accrued rental
   income...............          (9,061)          (5,694)           (291)              475
  Prepaid expenses and
   other issues.........          (5,833)         (14,330)         (1,494)            2,777
  Accounts payable and
   accrued expenses.....           9,816            5,611           5,220              (572)
  Accrued interest
   payable..............             726           (5,107)          2,021               579
  Other liabilities.....          25,567            5,672           3,728             3,971
                             -----------        ---------        --------         ---------
   Total adjustments....         122,175           10,995          20,485            48,628
                             -----------        ---------        --------         ---------
   Net cash provided by
    operating
    activities..........         215,287           46,146          25,090            55,907
                             -----------        ---------        --------         ---------
Cash flows from
 investing activities:
 Acquisitions to real
  estate and equipment..      (1,697,449)        (526,890)        (27,721)          (30,238)
 Tenant leasing costs...         (17,979)          (2,793)         (2,550)           (4,077)
 Investments in joint
  ventures..............         (43,644)            (570)         (2,573)              --
 Notes receivable.......        (420,143)             --              --                --
 Cash from contributed
  assets................             --            10,510             --                --
                             -----------        ---------        --------         ---------
   Net cash used in
    investing
    activities..........      (2,179,215)        (519,743)        (32,844)          (34,315)
                             -----------        ---------        --------         ---------
Cash flows from
 financing activities:
 Net proceeds from sales
  of common stock.......         819,103          839,209             --                --
 Owners' contributions..             --               --            9,330            33,279
 Owners' distributions..             --               --          (32,125)         (105,619)
 Borrowings on unsecured
  line of credit........         322,000          233,000             --                --
 Repayment of unsecured
  line of credit........        (540,000)             --              --                --
 Repayments of mortgage
  notes.................        (159,714)        (712,338)         (3,799)          (93,695)
 Proceeds from mortgage
  notes.................       1,226,717          220,000             --            117,269
 Proceeds from notes
  payable...............         420,143              --              --             11,933
 Accounts receivable--
  affiliate.............             --               --             (804)              --
 Accounts payable--
  affiliate.............             --           (19,983)         19,983               --
 Proceeds from
  (repayments of) notes
  payable--affiliate....             --           (38,833)         16,716               --
 Dividends and
  distributions.........        (127,307)         (17,026)            --                --
 Deferred financing and
  other costs...........          (2,408)         (12,872)            (35)           (1,628)
                             -----------        ---------        --------         ---------
   Net cash provided by
    financing
    activities..........       1,958,534          491,157           9,266           (38,461)
                             -----------        ---------        --------         ---------
Net increase (decrease)
 in cash................          (5,394)          17,560           1,512           (16,869)
Cash and cash
 equivalents, beginning
 of period..............          17,560              --            8,998            25,867
                             -----------        ---------        --------         ---------
Cash and cash
 equivalents, end of
 period.................     $    12,166        $  17,560        $ 10,510         $   8,998
                             ===========        =========        ========         =========
Supplemental
 disclosures:
 Cash paid for
  interest..............     $    46,422        $  36,783        $ 50,917         $ 107,700
                             ===========        =========        ========         =========
 Interest capitalized...     $     6,933        $   1,168        $  1,111         $     366
                             ===========        =========        ========         =========
Non-cash activities:
 Operating activity:
  Non-cash portion of
   interest expense.....     $       247        $     547        $  1,497               644
                             ===========        =========        ========         =========
 Investing and Financing
  activities:
  Mortgage notes payable
   assumed in connection
   with acquisitions....     $   496,926              --              --                --
                             ===========
  Issuance of minority
   interest in
   connection with
   acquisition..........     $   941,318              --              --                --
                             ===========
  Common stock issued in
   connection with
   acquisition..........     $     5,000              --              --                --
                             ===========
  Dividends and
   distributions
   declared but not
   paid.................     $    40,494          $22,539             --                --
                             ===========        =========
  Conversion of owners'
   equity to notes
   payable--affiliate...             --               --              --          $   4,918
                                                                                  =========
</TABLE>
 
   The accompanying notes are an integral part of these financial statements.
 
                                      F-6
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
 
1. Organization and Basis of Presentation
 
 Organization
 
   Boston Properties, Inc. (the "Company") is one of the largest owners and
developers of office properties in the United States, with a significant
presence in Greater Boston, Greater Washington, D.C., Greater San Francisco,
Midtown Manhattan, Princeton/East Brunswick, New Jersey, Baltimore, Maryland,
and Richmond, Virginia. The Company is a fully integrated self-administered and
self-managed real estate investment trust ("REIT"). The Company was formed to
succeed to the real estate development, redevelopment, acquisition, management,
operating and leasing businesses association with the predecessor company
founded by Mortimer B. Zuckerman and Edward H. Linde in 1970. The term
"Predecessor Group" or "Predecessor" as used herein refers to the entities that
owned interests in one or more properties that were contributed to the Company
in connection with the Company's initial public offering in June 1997 (the
"Initial Offering"). The term "Company" as used herein includes Boston
Properties, Inc. and its subsidiaries on a consolidated basis (including Boston
Properties Limited Partnership (the "Operating Partnership")).
 
   On June 23, 1997, the Company commenced operations after completing an
initial public offering of 36,110,000 common shares at a price per share of
$25.00 (including 4,710,000 shares issued as a result of the exercise of an
over-allotment option by the underwriters). The proceeds to the Company, net of
underwriters' discount and offering costs, were approximately $839.2 million.
Upon the completion of such offering, the Company succeeded to substantially
all of the interests of the Predecessor in (i) a portfolio of office,
industrial and hotel properties and (ii) the acquisition, property management,
leasing, development and construction businesses of the Predecessor Group. The
acquisition, property management, leasing, development and construction
businesses are being carried out by the Operating Partnership and the Company's
majority-owned affiliate, Boston Properties Management, Inc.
 
   On January 26, 1998, the Company completed a second offering of 23,000,000
common shares at a price of $35.125 per share (including 3,000,000 shares
issued as a result of the exercise of an over-allotment option by the
underwriters). The proceeds to the Company, net of underwriters' discount and
offering costs were approximately $765.0 million.
 
 Properties
 
   At December 31, 1998, the Company owned a portfolio of 121 commercial real
estate properties (82 properties at December 31, 1997) (the "Properties")
aggregating approximately 31.6 million square feet (including ten properties
currently under development). The Properties consist of 108 office properties,
including 76 Class A office properties and 32 Research and Development
properties; nine industrial properties; three hotels; and one parking garage.
In addition, the Company owns 21 parcels of land totaling 300.1 acres (which
will support approximately 6.8 million square feet of development) and
structured parking for 11,427 vehicles containing approximately 5.8 million
square feet. The Company considers Class A office properties to be centrally
located buildings that are professionally managed and maintained, attract high-
quality tenants and command upper-tier rental rates, and that are modern
structures or have been modernized to compete with newer buildings. The Company
considers Research and Development properties to support office, research and
development and other technical uses.
 
 Basis of Presentation
 
   The consolidated financial statements of the Company include all the
accounts of the Company, Boston Properties Limited Partnership, and its
subsidiaries. The financial statements reflect the properties acquired at
 
                                      F-7
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
      NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
               (dollars in thousands, except per share amounts)
 
their historical accounting basis to the extent of the acquisition of
interests from the Predecessor Group's owners who continued as investors. The
remaining interests acquired for cash from those owners of the Predecessor
Group, who decided to sell their interests, have been accounted for as a
purchase and the excess of the purchase price over the related historical cost
basis was allocated to real estate. The combined financial statements of the
Predecessor Group include interests in properties and the third party
commercial real estate development, project management and property management
business. The accompanying combined financial statements for the Predecessor
Group have been presented on a combined basis due to the common ownership and
management of the entities included in the Predecessor Group; therefore, its
combined financial statements are presented for comparative purposes. All
significant intercompany balances and transactions have been eliminated.
 
   Investments in joint ventures where the Company does not have a controlling
interest are accounted for under the equity method. Under the equity method of
accounting the net equity investment of the Company in the joint ventures is
reflected on the consolidated balance sheets.
 
2. Significant Accounting Policies
 
 Real Estate
 
   Real estate is stated at depreciated cost. The Company periodically reviews
its properties to determine if its carrying costs will be recovered from
future operating cash flows. Upon determination that an impairment has
occurred, those assets shall be reduced to fair value. No such impairment
losses have been recognized to date.
 
   The cost of buildings and improvements includes the purchase price of
property, legal fees and acquisition costs. The cost of buildings under
development includes the capitalization of interest, property taxes and other
costs incurred during the period of development. Expenditures for repairs and
maintenance are charged to operations as incurred. Significant betterments are
capitalized. When assets are sold or retired, their costs and related
accumulated depreciation are removed from the accounts with the resulting
gains or losses reflected in net income or loss for the period.
 
   Depreciation is computed on the straight-line basis over the estimated
useful lives of the assets as follows:
 
<TABLE>
      <S>                                    <C>
      Land improvements..................... 25 to 40 years
      Buildings............................. 10 to 40 years
      Tenant improvements................... Shorter of useful life or terms of
                                             related lease
      Furniture, fixtures, and equipment.... 5 to 7 years
</TABLE>
 
 Cash and Cash Equivalents
 
   Cash and cash equivalents consist of cash on hand and investments with
maturities of three months or less from the date of purchase. The Company's
cash and cash equivalents are held at major commercial banks. The Company has
not experienced any losses to date on its invested cash.
 
 Escrows
 
   Escrows include amounts established pursuant to various agreements for
security deposits, property taxes, insurance and other costs.
 
                                      F-8
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
 
 Deferred Charges
 
   Deferred charges include leasing costs and financing fees. Fees and costs
incurred in the successful negotiation of leases, including brokerage, legal
and other costs have been deferred and are being amortized on a straight-line
basis over the terms of the respective leases. Fees and costs incurred to
obtain long-term financing have been deferred and are being amortized over the
terms of the respective loans on a basis which approximates the effective
interest method and are included in interest expense. Fully amortized deferred
charges are removed from the books upon the expiration of the lease or maturity
of the debt.
 
 Minority Interests
 
   Minority Interests at December 31, 1998 represent minority interests in
partially owned properties and minority holders' share in the Operating
Partnership.
 
 Offering Costs
 
   Underwriting commissions and offering costs incurred in connection with the
initial public offering and follow-on offering have been reflected as a
reduction of additional paid-in capital.
 
 Dividends
 
   Earnings and profits, which will determine the taxability of dividends to
shareholders, will differ from income reported for financial reporting purposes
due to the differences for federal income tax purposes primarily in the
estimated useful lives used to compute depreciation. Dividends declared
represented approximately 85% and 59% ordinary income for federal income tax
purposes for the year ended December 31, 1998 and the period from June 23, 1997
to December 31, 1997, respectively.
 
 Revenue Recognition
 
   Base rental revenue is reported on a straight-line basis over the terms of
the respective leases. The impact of the straight-line rent adjustment
increased revenues by $18,510 and $5,985 and decreased revenues by $475 for the
years ended December 31, 1998, 1997 and 1996, respectively. Property operating
cost reimbursements due from tenants for common area maintenance, real estate
taxes and other recoverable costs are recognized in the period the expenses are
incurred.
 
   Accrued rental income represents rental income earned in excess of rent
payments received pursuant to the terms of the individual lease agreements, net
of an allowance for doubtful accounts.
 
   Development fees are recognized ratably over the period of development.
Management fees are recognized as revenue as they are earned.
 
 Interest Expense
 
   Interest expense on fixed rate debt with predetermined periodic rate
increases is computed using the effective interest method over the terms of the
respective loans.
 
 Earnings Per Share
 
   Basic earnings per share ("EPS") is computed by dividing net income by the
weighted average number of common shares outstanding during the year. Diluted
EPS reflects the potential dilution that could occur from common shares
issuable through stock-based compensation including stock options and
conversion of the minority interest in the Operating Partnership.
 
                                      F-9
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
 
 Reclassifications
 
   Certain prior year balances have been reclassified in order to conform to
current year presentation.
 
 Use of Estimates in the Preparation of Financial Statements
 
   The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
 Fair Value of Financial Instruments
 
   The carrying values of cash and cash equivalents, escrows, receivables,
accounts payable, accrued expenses and other assets and liabilities are
reasonable estimates of their fair values because of the short maturities of
these instruments. Mortgage notes payable have aggregate carrying values which
approximate their estimated fair values based upon the remaining maturities for
certain debt and interest rates for debt with similar terms and remaining
maturities. The fair values of these financial instruments were not materially
different from their carrying or contract values.
 
 Income Taxes
 
   The Company has elected to be taxed as a REIT under Sections 856 through 860
of the Internal Revenue Code of 1986, as amended (the "Code"), commencing with
its taxable year ended December 31, 1997. As a result, the Company generally
will not be subject to federal corporate income tax on its taxable income that
is distributed to its shareholders. A REIT is subject to a number of
organizational and operational requirements, including a requirement that it
currently distribute at least 95% of its annual taxable income. Accordingly, no
provision has been made for federal income taxes in the accompanying
consolidated financial statements.
 
   To assist the Company in maintaining its status as a REIT, the Company
leases its two in-service hotel properties, pursuant to a lease with a
participation in the gross receipts of such hotel properties, to a lessee ("ZL
Hotel LLC") in which Messrs. Zuckerman and Linde, the Chairman of the Board and
Chief Executive Officer ("CEO"), respectively, are the sole member-managers.
Marriott International, Inc. manages these hotel properties under the Marriott
name pursuant to a management agreement with the lessee. The Company has made
similar arrangements with respect to a hotel property under development.
 
   The net difference between the tax basis and the reported amounts of the
Company's assets and liabilities is approximately $987,789 and $149,000 as of
December 31, 1998 and 1997, respectively.
 
   The Predecessor Group was not a legal entity subject to income taxes. No
federal or state income taxes were applicable to the entities that managed and
owned the properties; accordingly, no provision has been made for federal
income taxes in the accompanying combined financial statements.
 
   Certain entities included in the Company's consolidated financial statements
and the Predecessor Group's combined financial statements are subject to
District of Columbia franchise taxes. Franchise taxes are recorded as rental-
operating expenses in the accompanying combined financial statements.
 
                                      F-10
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
 
 Concentrations of Credit Risk
 
   Management of the Company performs ongoing credit evaluations of the tenants
and may require tenants to provide some form of credit support such as
corporate guarantees and/or other financial guarantees. Although the Company's
properties are geographically diverse and the tenants operate in a variety of
industries, to the extent the Company has a significant concentration of rental
revenues from any single tenant, the inability of that tenant to make its lease
payments could have an adverse effect on the Company.
 
 Segment Reporting
 
   In 1998, the Company adopted Statement of Financial Accounting Standards 131
("FAS 131"), "Disclosures about Segments of an Enterprise and Related
Information." FAS 131 supersedes Statement of Financial Accounting Standards
No. 14, "Financial Reporting for Segments of a Business Enterprise", replacing
the "industry segment' approach with a "management" approach. The management
approach designates the internal organization used by management for making
operating decisions and assessing performance as the source of the Company's
segments. FAS 131 also requires disclosures about product and services,
geographic areas, and major customers. The adoption of FAS 131 did not affect
results of operations or financial position of the Company.
 
3. Real Estate
 
   Real estate consisted of the following at December 31,:
 
<TABLE>
<CAPTION>
                                                            1998        1997
                                                         ----------  ----------
   <S>                                                   <C>         <C>
   Land................................................. $  926,862  $  403,022
   Buildings and improvements...........................  3,628,212   1,223,892
   Tenant improvements..................................    134,973     118,374
   Furniture, fixtures and equipment....................     35,710      33,638
   Developments in progress.............................    191,436      17,574
                                                         ----------  ----------
     Total..............................................  4,917,193   1,796,500
   Less: accumulated depreciation.......................   (357,384)   (294,218)
                                                         ----------  ----------
                                                         $4,559,809  $1,502,282
                                                         ----------  ----------
</TABLE>
 
4. Deferred Charges
 
   Deferred charges consisted of the following at December 31,:
 
<TABLE>
<CAPTION>
                                                               1998      1997
                                                             --------  --------
   <S>                                                       <C>       <C>
   Leasing costs............................................ $ 58,803  $ 46,769
   Financing costs..........................................   28,128    29,271
                                                             --------  --------
                                                               86,931    76,040
   Less: accumulated amortization...........................  (40,902)  (40,555)
                                                             --------  --------
                                                             $ 46,029  $ 35,485
                                                             --------  --------
</TABLE>
 
5. Investments in Joint Ventures
 
   The investments in joint ventures represent (i) a 25% interest in a joint
venture which is developing two office buildings in Reston, VA, (ii) a 25%
interest in a joint venture which is developing one office building in Reston,
VA and (iii) a 50% interest in a joint venture which is developing an office
building in Washington,
 
                                      F-11
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
      NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
               (dollars in thousands, except per share amounts)
 
DC. The Company also serves as development manager for these joint ventures.
Under the equity method of accounting the net equity investment is reflected
on the consolidated balance sheets.
 
   The combined summarized balance sheets of the joint ventures are as
follows:
 
<TABLE>
<CAPTION>
                                                                 1998    1997
                                                               -------- -------
   <S>                                                         <C>      <C>
   Balance Sheets:
     Land..................................................... $ 43,550 $ 8,167
     Developments in progress.................................  128,867  16,748
     Other assets.............................................   10,032   1,192
                                                               -------- -------
       Total Assets........................................... $182,449 $26,107
                                                               -------- -------
     Construction loans payable............................... $ 55,638 $ 6,969
     Other liabilities........................................   20,595   7,042
     Partners' equity.........................................  106,216  12,096
                                                               -------- -------
       Total Liabilities and Partners' Equity................. $182,449 $26,107
                                                               -------- -------
   Company's Share of Equity.................................. $ 46,787 $ 3,143
                                                               -------- -------
</TABLE>
 
6. Mortgage Notes Payable
 
   Mortgage notes payable comprise various loans at December 31, 1998 and
1997, each collateralized by a building and related land included in real
estate assets. The mortgage notes payable are generally due in monthly
installments and mature at various dates through February 1, 2010. Interest
rates on fixed rate mortgage notes payable aggregating approximately
$2,623,847 and $1,082,000 at December 31, 1998 and 1997, respectively, range
from 6.40% to 8.59% (averaging 7.05% and 7.55% at December 31, 1998 and 1997,
respectively). Variable rate mortgage notes payable were approximately $11,417
and $11,600 at December 31, 1998 and 1997, respectively, with rates ranging
from 1.0% above the London Interbank Offered Rate ("LIBOR") (5.06% and 5.90%
at December 31, 1998 and 1997, respectively) to 1.5% above the LIBOR rate.
 
   The interest rates related to the mortgage notes payable for three
properties aggregating approximately $209,987 at December 31, 1998 and for two
properties aggregating $198,781 at December 31, 1997 are subject to periodic
scheduled rate increases. Interest expense for these mortgage notes payable is
computed using the effective interest method. Additionally, mortgage notes
payable at December 31, 1998 on three properties in the amount of $320,484 and
a mortgage note payable on one property at December 31, 1997 totaling $185,618
have been accounted for at their fair value. The impact of using these methods
decreased interest expense $2,656 and increased interest expense $547 and
$1,347 for the years ended December 31, 1998, 1997 and 1996 respectively. The
cumulative liability related to these adjustments is $18,317 and $6,430 at
December 31, 1998 and 1997, respectively, and is included in mortgage notes
payable.
 
   Combined aggregate principal payments of mortgage notes payable at December
31, 1998 are as follows:
 
<TABLE>
           <S>                                  <C>
           1999................................ $ 26,940
           2000................................  233,075
           2001................................  146,059
           2002................................  385,394
           2003................................  206,853
</TABLE>
 
   Certain mortgage indebtedness aggregating approximately $707.1 million was
repaid in conjunction with the initial public offering. These repayments,
along with (i) the payment of certain related repayment penalties,
 
                                     F-12
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
      NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
               (dollars in thousands, except per share amounts)
 
(ii) the write-off of the related previously capitalized deferred financing
costs and (iii) the extinguishment of the excess of the mortgage not payable
balance over the principal payment necessitated by an increasing rate loan
being accounted for using the effective interest method, generated a gain of
approximately $7.9 million (net of minority interest share of approximately
$3.3 million), which has been reflected as an extraordinary gain during the
period from June 23, 1997 through December 31, 1997 in the financial
statements.
 
   During 1998, the Company incurred an extraordinary loss primarily related
to fees incurred in connection with the repayment of certain mortgages payable
in connection with the Embarcadero Center acquisition.
 
7. Unsecured Line of Credit
 
   As of December 31, 1998, the Company has an agreement for a $500,000
unsecured revolving credit facility (the "Unsecured Line of Credit") maturing
in June 2000. Outstanding balances under the Unsecured Line of Credit
currently bear interest at a floating rate based on an increase over LIBOR
from 90 to 120 basis points, depending upon the Company's applicable leverage
ratio, or the lender's prime rate. The Unsecured Line of Credit requires
monthly payments of interest only.
 
   The outstanding balance of the Unsecured Line of Credit was $15,000 and
$233,000 at December 31, 1998 and 1997, respectively. The weighted average
balance outstanding was approximately $68,293 and $117,000 during the year
ended December 31, 1998 and the period from June 23, 1997 through December 31,
1997, respectively. The weighted average interest rate on amounts outstanding
was approximately 6.64% and 6.82% during the year ended December 31, 1998 and
the period from June 23, 1997 through December 31, 1997. The applicable
interest rate under the Unsecured Line of Credit at December 31, 1998 was
6.73%.
 
   The Company's ability to borrow under the Unsecured Line of Credit is
subject to the Company's ongoing compliance with a number of financial and
other covenants, including, but not limited to, maintaining a certain ratio of
secured indebtedness to total asset value, as defined.
 
8. Leasing Activity
 
   Future minimum lease payments (excluding operating expense reimbursements)
as of December 31, 1998, under non-cancelable operating leases, which expire
on various dates through 2029, are as follows:
 
<TABLE>
<CAPTION>
           Years ending December 31,
           -------------------------
           <S>                                 <C>
           1999............................... $ 547,576
           2000...............................   511,158
           2001...............................   471,238
           2002...............................   411,966
           2003...............................   334,378
           Thereafter......................... 1,234,584
</TABLE>
 
   The geographic concentration of the future minimum lease payments to be
received is detailed as follows:
 
<TABLE>
<CAPTION>
           Location
           --------
           <S>                                <C>
           Greater Boston.................... $  584,318
           Greater Washington D.C............  1,273,401
           Midtown Manhattan.................    913,636
           Greater San Francisco.............    631,611
           New Jersey and Pennsylvania.......    107,934
</TABLE>
 
                                     F-13
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
 
   No one tenant represented more than 10% of the Company's total rental income
for the year ended December 31, 1998. One tenant represented 13.3% of the
Company's total rental income for the year ended December 31, 1997.
 
9. Segment Reporting
 
   The Company has determined that its segments are those that are based on the
Company's method of internal reporting, which classifies its operations by both
geographic area and property type. The Company's segments by geographic area
are: Greater Boston, Greater Washington D.C., midtown Manhattan, Greater San
Francisco, and New Jersey and Pennsylvania. Segments by property type include:
Class A Office, R&D, Industrial, Hotel, and Garage.
 
   Asset information by segment is not reported, since the Company does not use
this measure to assess performance; therefore, the depreciation and
amortization expenses are not allocated among segments. Interest income,
management and development services, interest expense, and general and
administrative expenses are not included in net operating, as the internal
reporting addresses these on a corporate level.
 
   Information by Geographic Area and Property Type:
 
   For the year ended December 31, 1998:
 
<TABLE>
<CAPTION>
                                     Greater               Greater    New Jersey
                         Greater   Washington,  Midtown      San         and       Grand
                          Boston      D.C.     Manhattan  Francisco  Pennsylvania  Totals
                         --------  ----------- ---------  ---------  ------------ --------
<S>                      <C>       <C>         <C>        <C>        <C>          <C>
Rental Revenues:
  Class A Office........ $ 94,284   $ 169,882  $ 129,644  $ 18,914     $17,407    $430,131
  R&D...................    5,955      17,121        --      1,502         --       24,578
  Industrial............    1,611       1,431        --      1,349         789       5,180
  Hotels................   25,944         --         --        --          --       25,944
  Garage................    1,744         --         --        --          --        1,744
                         --------   ---------  ---------  --------     -------    --------
    Total...............  129,538     188,434    129,644    21,765      18,196     487,577
                         --------   ---------  ---------  --------     -------    --------
% of Grand Totals.......    26.57%      38.65%     26.59%     4.46%       3.73%     100.00%
                         --------   ---------  ---------  --------     -------    --------
Rental Expenses:
  Class A Office........   36,591      45,156     44,787     7,099       5,663     139,296
  R&D                       1,808       3,644        --        395         --        5,847
  Industrial............      525         316        --        305         107       1,253
  Hotels................    3,562         --         --        --          --        3,562
  Garage................      532         --         --        --          --          532
                         --------   ---------  ---------  --------     -------    --------
    Total...............   43,018      49,116     44,787     7,799       5,770     150,490
                         --------   ---------  ---------  --------     -------    --------
% of Grand Totals.......    28.59%      32.64%     29.76%     5.18%       3.83%     100.00%
                         --------   ---------  ---------  --------     -------    --------
Net Operating Income....  $86,520    $139,318    $84,857   $13,966     $12,426    $337,087
                         ========   =========  =========  ========     =======    ========
% of Grand Totals.......    25.67%      41.33%     25.17%     4.14%       3.69%     100.00%
                         ========   =========  =========  ========     =======    ========
</TABLE>
 
 
                                      F-14
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
   For the year ended December 31, 1997 (includes operations of the Company and
the Predecessor):
 
<TABLE>
<CAPTION>
                                    Greater              Greater   New Jersey
                         Greater  Washington,  Midtown     San        and       Grand
                         Boston      D.C.     Manhattan Francisco Pennsylvania  Totals
                         -------  ----------- --------- --------- ------------ --------
<S>                      <C>      <C>         <C>       <C>       <C>          <C>
Rental Revenues:
  Class A Office........ $42,082    $87,688    $67,350      --         --      $197,120
  R&D...................   5,420      7,848        --    $1,314        --        14,582
  Industrial............   1,685      1,450        --     1,082       $829        5,046
  Hotels................  14,611        --         --       --         --        14,611
  Garage................   2,084        --         --       --         --         2,084
Hotel Revenues..........  31,185        --         --       --         --        31,185
                         -------    -------    -------   ------       ----     --------
  Total.................  97,067     96,986     67,350    2,396        829      264,628
                         -------    -------    -------   ------       ----     --------
% of Grand Totals.......   36.68%     36.65%     25.45%    0.91%      0.31%      100.00%
                         -------    -------    -------   ------       ----     --------
Operating Expenses:
  Class A Office........  13,445     23,659     23,341      --         --        60,445
  R&D...................   1,398      1,415        --       452        --         3,265
  Industrial............     531        324        --       183        105        1,143
  Hotels................   1,737        --         --       --         --         1,737
  Garage................     535        --         --       --         --           535
Hotel Expenses..........  22,452        --         --       --         --        22,452
                         -------    -------    -------   ------       ----     --------
  Total.................  40,098     25,398     23,341      635        105       89,577
                         -------    -------    -------   ------       ----     --------
% of Grand Totals.......  44.76%     28.35%      26.06%    0.71%      0.12%         100%
                         -------    -------    -------   ------       ----     --------
Net Operating Income.... $56,969    $71,588    $44,009   $1,761       $724     $175,051
                         =======    =======    =======   ======       ====     ========
% of Grand Totals.......   32.54%     40.90%     25.14%    1.01%      0.41%      100.00%
                         =======    =======    =======   ======       ====     ========
</TABLE>
 
   The following is a reconciliation of net operating income to income before
minority interests:
 
<TABLE>
<CAPTION>
                                                              1998    1997(/1/)
                                                            --------  ---------
<S>                                                         <C>       <C>
Net operating income....................................... $337,087  $175,051
Add:
  Development and management services......................   12,411     7,498
  Interest income..........................................   13,859     3,335
Less:
  General and administrative...............................  (22,504)  (11,805)
  Interest expense......................................... (124,860)  (91,588)
  Depreciation and amortization............................  (75,418) (38,773)
                                                            --------  --------
Income before minority interests........................... $140,575   $43,718
                                                            ========  ========
</TABLE>
- --------
(1) Includes operations of the Company and the Predecessor.
 
10. Employee Benefit Plan
 
   Effective January 1, 1985, the Predecessor Group adopted a 401(k) Savings
Plan (the "Plan") for its employees. Under the Plan, as amended, employees, as
defined, are eligible to participate in the Plan after they
 
                                      F-15
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
have completed three months of service. In addition, participants may elect to
make an after-tax contribution of up to 10% of their wages. Upon formation, the
Company adopted the Plan and the terms of the Plan.
 
   The Plan provides that matching employer contributions are to be determined
at the discretion of the Company. The Company matches 200% of the first 2% of
pay (utilizing pay that is not in excess of $100). The cost to the Company and
the Predecessor of this matching contribution for the year ended December 31,
1998, 1997 and 1996 was $583, $403 and $359, respectively.
 
   Participants are immediately vested in their pre-tax and after-tax
contributions. Participants vest in the Company's and the Predecessor Group's
matching contributions and earnings thereon over a five-year period.
 
11. Stock Option and Incentive Plan
 
   The Company has established a stock option and incentive plan for the
purpose of attracting and retaining qualified directors, officers and employees
and rewarding them for superior performance in achieving the Company's business
goals and enhancing stockholder value. In conjunction with the Initial
Offering, the Company granted options with respect to 2,290,000 common shares
to directors, officers and employees. All of such options were issued at an
exercise price of $25.00 per share. The term of each of option is 10 years from
the date of grant. In general, one-third of each of the options granted to
officers and the chairman of the board (the "Chairman") are exercisable on each
of the third, fourth and fifth anniversary of the date of grant, respectively.
One-third of the options granted to employees who are not officers will be
exercisable on each of the first, second and third anniversary of the date of
grant, respectively. Other than the options granted to the Chairman, one-half
of the options granted to non-employee directors will be exercisable on each of
the first and second anniversary of the date of grant, respectively.
 
   The Company sponsors a share-based incentive compensation. The Company
applies Accounting Principles Bulletin Opinion No. 25 ("APB 25") and related
Interpretations in accounting for its plan. Statement of Financial Accounting
Standards No.123 ("SFAS 123") was issued by the Financial Accounting Standards
Board in 1995 and, if fully adopted, changes the methods for recognition of
cost on plans similar to that of the Company. Adoption of FAS 123 is optional;
however, pro forma disclosure as if the Company adopted the cost recognition
requirements under FAS 123 are presented below. The Company did not record any
expense under APB 25.
 
   A summary of the status of the Company's stock options as of December 31,
1998 and 1997 and changes during the years ended December 31, 1998 and 1997 are
presented below:
 
<TABLE>
<CAPTION>
                                                                Weighted Average
                                                      Shares     Exercise Price
                                                     ---------  ----------------
   <S>                                               <C>        <C>
   Outstanding at June 23, 1997..................... 2,290,000       $25.00
   Granted..........................................       --           --
   Exercised........................................       --           --
   Cancelled........................................    (5,900)      $25.00
                                                     ---------       ------
   Outstanding at December 31, 1997................. 2,284,100       $25.00
   Granted.......................................... 3,621,663       $34.13
   Exercised........................................    (1,034)      $25.00
   Cancelled........................................   (66,779)      $31.61
                                                     ---------       ------
   Outstanding at December 31, 1998................. 5,837,950       $30.58
                                                     =========       ======
</TABLE>
 
 
                                      F-16
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
   As of December 31, 1998, there were 9,127,602 shares authorized under the
plan. The weighted average fair value of options granted during the year was
$5.49 and $3.81 for the years ended December 31, 1998 and 1997, respectively.
The fair value of each share option granted is estimated on the date of grant
using the Black-Scholes option-pricing model with the following weighted-
average assumptions for grants in 1998 and 1997:
 
<TABLE>
<CAPTION>
                                                                1998    1997
                                                                ----    ----
      <S>                                                       <C>     <C>
      Dividend yield........................................... 4.80%   6.26%
      Expected life of option.................................. 6 years 6 years
      Risk-free interest rate.................................. 5.58%   6.32%
      Expected stock price volatility..........................   20%     20%
</TABLE>
 
   The following table summarizes information about stock options outstanding
at December 31, 1998:
 
<TABLE>
<CAPTION>
                                 Options Outstanding                Options Exercisable
                     ------------------------------------------- --------------------------
                       Number    Weighted Average    Weighted      Number       Weighted
      Range of       Outstanding    Remaining        Average     Exercisable    Average
   Exercise Prices   at 12/31/98 Contractual Life Exercise Price at 12/31/98 Exercise Price
   ---------------   ----------- ---------------- -------------- ----------- --------------
   <S>               <C>         <C>              <C>            <C>         <C>
   $25.00--
    $34.75            5,837,950        9.66           $30.58       495,261       $25.00
</TABLE>
 
   The compensation cost under SFAS 123 for the stock performance-based plan
would have been $6,847 and $999 in 1998 and 1997, respectively. Had
compensation cost for the Company's 1997 grants for stock-based compensation
plans been determined consistent with FAS 123, the Company's net income, and
net income per common share for 1998 would approximate the pro forma amounts
below:
 
<TABLE>
<CAPTION>
                                                                 1998    1997
                                                                ------- -------
      <S>                                                       <C>     <C>
      Net income............................................... $86,265 $34,152
      Net income per common share--basic....................... $  1.42 $  0.88
      Net income per common share--diluted..................... $  1.41 $  0.87
</TABLE>
 
   The effects of applying FAS 123 in this pro forma disclosure are not
indicative of future amounts. FAS 123 does not apply to future anticipated
awards.
 
12. Commitments and Contingencies
 
 Legal Matters
 
   The Company is subject to various legal proceedings and claims that arise in
the ordinary course of business. These matters are generally covered by
insurance. Management believes that the final outcome of such matters will not
have a material adverse effect on the financial position, results of operations
or liquidity of the Company.
 
 Environmental Matters
 
   Some of the Properties are located in urban and industrial areas where fill
or current or historical industrial uses of the areas have caused site
contamination. With respect to all of the Properties, independent environmental
consultants have been retained in the past to conduct or update Phase I
environmental assessments (which generally do not involve invasive techniques
such as soil or ground water sampling) and
 
                                      F-17
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
asbestos surveys on all of the Properties. These environmental assessments have
not revealed any environmental conditions that the Company believes will have a
material adverse effect on its business, assets or results of operations, and
the Company is not aware of any other environmental condition with respect to
any of the Properties which the Company believes would have such a material
adverse effect.
 
   With respect to a property in Massachusetts, the Company received a Notice
of Potential Responsibility from the state regulatory authority on January 9,
1997, related to groundwater contamination. In addition, the Company received a
Notice of Downgradient Property Status Submittal from each of two third parties
concerning alleged contamination at two downgradient properties. On January 15,
1997, the Company notified the state regulatory authority that the Company
would cooperate with and monitor the tenant at the property (which investigated
the matter and undertook remedial actions). That investigation identified the
presence of hazardous substances in and near a catch basin along the property
line. The tenant completed an Immediate Response Action at the site in April
1998. The Company expects the tenant will likewise take any additional
necessary response actions. The lease with the tenant contains a provision
pursuant to which the tenant indemnifies the Company against such liability.
 
   On January 15, 1992, another property in Massachusetts was listed by the
state regulatory authority as an unclassified Confirmed Disposal Site in
connection with groundwater contamination. The Company has engaged a specially
licensed environmental consultant to perform the necessary investigation and
assessment and to prepare submittals to the state regulatory authority. On
August 1, 1997, such consultant submitted to the state regulatory authority a
Phase I--Limited Site Investigation Report and Downgradient Property Status
Opinion. This Opinion concluded that the property qualifies for Downgradient
Property Status under the state regulatory program, which eliminates certain
deadlines for conducting response actions at a site and may qualify the Company
for liability relief under recent statutory amendments. Although the Company
believes that the current or former owners of the upgradient source properties
may ultimately be responsible for some or all of the costs of such response
actions, the Company will take any necessary further response actions.
 
   An investigation at an additional property in Massachusetts identified
groundwater contamination. The Company engaged a specially licensed
environmental consultant to perform the necessary investigation and assessment
and to prepare submittals to the state regulatory authority. On March 11, 1998,
the consultant submitted to the state regulatory authority a Release
Notification and Downgradient Property Status Opinion. This Opinion concluded
that the property qualifies for Downgradient Property Status under the state
regulatory program, which eliminates certain deadlines for conducting response
actions at a site and may qualify the Company for liability relief under recent
statutory amendments. Although the Company believes that the current or former
owners of the upgradient source properties may ultimately be responsible for
some or all of the costs of such response actions, the Company will take any
necessary further response actions.
 
   The Company expects that any resolution of the environmental matters
relating the above will not have a material impact on the financial position,
results of operations or liquidity of the Company.
 
 Development
 
   The Company has entered into contracts for the construction and renovation
of properties currently under development. Commitments under these arrangements
totaled approximately $94,300 and $106,100 at December 31, 1998 and 1997,
respectively.
 
                                      F-18
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
 
 Sale of Property
 
   The Operating Partnership agreement provides that, until June 23, 2007, the
Operating Partnership may not sell or otherwise transfer four designated
properties in a taxable transaction without the prior written consent of the
Chairman and the CEO. In connection with the acquisition or contribution of 31
other Properties, the Company entered into similar agreements for the benefit
of the selling or contributing parties which specifically state the Company
will not sell or otherwise transfer the Properties in a taxable transaction
until a period ranging from June 2002 to November 2008. The Operating
Partnership is not required to obtain the consent from a party protected
thereby if such party does not continue to hold at least a specified percentage
of such party's original Operating Partnership units.
 
13. Earnings Per Share
 
   Earnings per share is computed as follows:
 
<TABLE>
<CAPTION>
                                              For the year ended December 31,
                                                            1998
                                             -----------------------------------
                                               Income       Shares     Per Share
                                             (Numerator) (Denominator)  Amount
                                             ----------- ------------  ---------
<S>                                          <C>         <C>           <C>
Basic Earnings:
  Income available to common shareholders...   $93,112      60,776       $1.53
Effect of Dilutive Securities:
  Stock Options.............................                   532        (.01)
                                               -------      ------       -----
Diluted Earnings:
  Income available to common shareholders...   $93,112      61,308       $1.52
                                               =======      ======       =====
</TABLE>
 
<TABLE>
<CAPTION>
                                   For the period from June 23, 1997 to
                                            December 31, 1997
                                  -------------------------------------------
                                     Income           Shares       Per Share
                                  (Numerator)     (Denominator)      Amount
                                  -------------   --------------   ----------
<S>                               <C>             <C>              <C>
Basic Earnings:
  Income available to common
   shareholders..................   $      35,151          38,694    $      .91
Effect of Dilutive Securities:
  Stock Options..................                             414          (.01)
                                    -------------    ------------    ----------
Diluted Earnings:
  Income available to common
   shareholders..................   $      35,151          39,108    $      .90
                                    =============    ============    ==========
</TABLE>
 
14. Selected Interim Financial Information (unaudited)
 
<TABLE>
<CAPTION>
                                                  1998
                         -------------------------------------------------------
                         Quarter Ended Quarter Ended Quarter Ended Quarter Ended
                           March 31,     June 30,    September 30, December 31,
                         ------------- ------------- ------------- -------------
<S>                      <C>           <C>           <C>           <C>
Revenues................    $95,603      $108,041      $140,177      $170,026
Income before minority
 interests..............     26,228        34,430        36,087        43,830
Income before
 extraordinary item.....     19,631        26,357        25,341        27,271
Per share income before
 extraordinary item.....        .36           .42           .40           .43
Net income..............     19,631        29,921        25,341        18,226
Basic earnings per
 share..................        .36           .48           .40           .29
</TABLE>
 
 
                                      F-19
<PAGE>
 
                          BOSTON PROPERTIES, INC. AND
                      BOSTON PROPERTIES PREDECESSOR GROUP
 
       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS--continued
                (dollars in thousands, except per share amounts)
 
15. Pro Forma Financial Information
 
   The following Pro Forma Condensed Statements of Income for the years ended
December 31, 1998 and 1997 are presented as if the Initial Offering, the
related formation transactions and the material property acquisitions
subsequent to the Initial Offering had occurred on January 1, 1997. The pro
forma information is based upon historical information and does not purport to
present what actual results would have been had such transactions, in fact,
occurred at January 1, 1997, or to project results for any future period.
 
   Pro Forma Condensed Statements of Income:
 
<TABLE>
<CAPTION>
                                                     Years ended December 31,
                                                     ------------------------
                                                         1998         1997
                                                     ------------ ------------
                                                            (Unaudited)
      <S>                                            <C>          <C>
      Revenues...................................... $    704,012 $    638,548
      Expenses...................................... $    535,825 $    522,700
      Net income before extraordinary items......... $    105,864 $     61,323
      Basic earnings per share (before extra-
       ordinary items............................... $       1.67 $        .97
      Diluted earnings per share (before extra-
       ordinary items).............................. $       1.65 $        .96
</TABLE>
 
16. Subsequent Events
 
   On January 21, 1999, the Company entered into a binding agreement to acquire
the leasehold interest in the remaining two development sites in New York
City's Times Square for approximately $312.25 million. The sites will support
more than 2 million square feet of development.
 
   On February 10, 1999, the Company closed on phase two of its acquisition of
Embarcadero Center. As a result, the Company owns 100% of the six buildings
comprising the Embarcadero Center. The total purchase price (including both
phases one and two) of approximately $1.2 billion was funded through the
assumption or incurrence of $730.0 million of mortgage financing, the issuance
of Preferred Units having an aggregate value of approximately $286.4 million,
cash of $100.0 million from the proceeds from the sale of the Company's Series
A Convertible Redeemable Preferred Stock, and a draw down of approximately
$97.3 million on the Company's Unsecured Line of Credit.
 
   In connection with the acquisition of Embarcadero Center, the proceeds from
the notes receivable of $420.1 million were used to discharge the notes
payable.
 
                                      F-20
<PAGE>
 
                            BOSTON PROPERTIES, INC.
 
             SCHEDULE 3--REAL ESTATE AND ACCUMULATED DEPRECIATION
                               December 31, 1998
                            (dollars in thousands)
 
<TABLE>
<CAPTION>
                                                                           Costs
                                                                        Capitalized                           Development
                                                                        Subsequent                                and
                                                                            to        Land and   Building and Construction
 Property Name     Type      Location     Encumbrances  Land   Building Acquisition Improvements Improvements in  Progress  Total
 -------------    ------ ---------------- ------------ ------- -------- ----------- ------------ ------------ ------------ -------
<S>               <C>    <C>              <C>          <C>     <C>      <C>         <C>          <C>          <C>          <C>
280 Park
Avenue..........  Office New York, NY       220,000    125,288 201,115    12,346      125,288      213,461        --       338,749
599 Lexington
Avenue..........  Office New York, NY       225,000     81,040 100,507    72,144       81,040      172,651        --       253,691
Riverfront
Plaza...........  Office Richmond, VA       119,992     18,000 156,733       587       18,000      157,320        --       175,320
875 Third
Avenue..........  Office New York, NY       153,807     74,880 139,151       844       74,880      139,995        --       214,875
Democracy
Center..........  Office Bethesda, MD           --      12,550  50,015    20,278       13,695       69,148        --        82,843
100 East Pratt
Street..........  Office Baltimore, MD       94,371     27,562 109,662     1,032       27,562      110,694        --       138,256
Two Independence
Square..........  Office Washington, DC     120,252     14,053  59,883     9,016       15,039       67,913        --        82,952
Capital
Gallery.........  Office Washington, DC      59,103      4,725  29,560    12,417        4,730       41,972        --        46,702
One Independence
Square..........  Office Washington, DC      76,611      9,356  33,701    17,475        9,634       50,898        --        60,532
2300 N Street...  Office Washington, DC      66,000     16,509  22,415    12,820       16,509       35,235        --        51,744
NIMA Building...  Office Reston, VA          22,291     10,567  67,431         2       10,567       67,433        --        78,000
Reston Corporate
Center..........  Office Reston, VA          25,727      9,135  41,398       184        9,135       41,582        --        50,717
Lockheed Martin
Building........  Office Reston, VA          27,249     10,210  58,884         0       10,210       58,884        --        69,094
500 E Street....  Office Washington, DC         --         109  22,420    11,027        1,569       31,987        --        33,556
One Cambridge
Center..........  Office Cambridge, MA          --         134  25,110     3,462          134       28,572        --        28,706
University
Place...........  Office Cambridge, MA          --         --   37,091       --           --        37,091        --        37,091
Newport Office
Park............  Office Quincy, MA           6,499      3,500  18,208         2        3,500       18,210        --        21,710
Lexington Office
Park............  Office Lexington, MA          --         998   1,426    10,368        1,072       11,720        --        12,792
191 Spring
Street..........  Office Lexington, MA       23,430      4,213  27,166    16,453        2,850       44,982        --        47,832
Ten Cambridge
Center..........  Office Cambridge, MA       40,000      1,299  12,943     4,428        1,868       16,802        --        18,670
10 and 20
Burlington Mall
Road............  Office Burlington, MA      16,613        930   6,928     8,371          939       15,290        --        16,229
Waltham Office
Center..........  Office Waltham, MA            --         422   2,719     3,214          425        5,930        --         6,355
Montvale
Center..........  Office Gaithersburg, MD     7,792      1,574   9,786     3,881        2,399       12,842        --        15,241
91 Hartwell
Avenue..........  Office Lexington, MA       11,322        784   6,464     2,410          784        8,874        --         9,658
Three Cambridge
Center..........  Office Cambridge, MA          --         174  12,200       803          174       13,003        --        13,177
201 Spring
Street..........  Office Lexington, MA          --       2,695  11,712     2,632        2,695       14,344        --        17,039
Bedford Business
Park............  Office Bedford, MA         22,667        534   3,403    12,936          534       16,339        --        16,873
Eleven Cambridge
Center..........  Office Cambridge, MA          --         121   5,535       504          121        6,039        --         6,160
33 Hayden
Avenue..........  Office Lexington, MA          --         266   3,234        76          266        3,310        --         3,576
Decoverly Two...  Office Rockville, MD          --       1,994   8,814        46        1,994        8,860        --        10,854
Decoverly
Three...........  Office Rockville, MD          --       2,220   9,044         0        2,220        9,044        --        11,264
170 Tracer
Lane............  Office Waltham, MA            --         398   4,601     1,288          418        5,869        --         6,287
32 Hartwell
Avenue..........  Office Lexington, MA          --         168   1,943     2,724          168        4,667        --         4,835
<CAPTION>
                  Accumulated  Year (s) Built/  Depreciable
 Property Name    Depreciation    Renovated    Lives (Years)
 -------------    ------------ --------------- -------------
<S>               <C>          <C>             <C>
280 Park
Avenue..........      7,113    1968/95-96           (1)
599 Lexington
Avenue..........     69,706    1986                 (1)
Riverfront
Plaza...........      3,679    1990                 (1)
875 Third
Avenue..........      3,768    1982                 (1)
Democracy
Center..........     23,628    1985-88/94-96        (1)
100 East Pratt
Street..........      3,474    1975/1991            (1)
Two Independence
Square..........     12,990    1992                 (1)
Capital
Gallery.........     17,246    1981                 (1)
One Independence
Square..........     13,277    1991                 (1)
2300 N Street...     10,932    1986                 (1)
NIMA Building...      1,545    1987/1988            (1)
Reston Corporate
Center..........        948    1984                 (1)
Lockheed Martin
Building........      1,349    1987/1988            (1)
500 E Street....     13,038    1987                 (1)
One Cambridge
Center..........      9,940    1987                 (1)
University
Place...........        479    1985                 (1)
Newport Office
Park............        683    1988                 (1)
Lexington Office
Park............      4,541    1982                 (1)
191 Spring
Street..........     11,905    1971/1995            (1)
Ten Cambridge
Center..........      6,324    1990                 (1)
10 and 20
Burlington Mall
Road............      5,567    1984-1989/95-96      (1)
Waltham Office
Center..........      3,044    1968-1970/87-88      (1)
Montvale
Center..........      3,465    1987                 (1)
91 Hartwell
Avenue..........      3,029    1985                 (1)
Three Cambridge
Center..........      3,887    1987                 (1)
201 Spring
Street..........        414    1997                 (1)
Bedford Business
Park............      7,166    1980                 (1)
Eleven Cambridge
Center..........      2,430    1984                 (1)
33 Hayden
Avenue..........      1,531    1979                 (1)
Decoverly Two...        202    1987                 (1)
Decoverly
Three...........        --     1989                 (1)
170 Tracer
Lane............      2,804    1980                 (1)
32 Hartwell
Avenue..........      2,845    1968-1979/1987       (1)
</TABLE>
 
                                      F-21
<PAGE>
 
                            BOSTON PROPERTIES, INC.
 
             SCHEDULE 3--REAL ESTATE AND ACCUMULATED DEPRECIATION
                               December 31, 1998
                            (dollars in thousands)
 
<TABLE>
<CAPTION>
                                                                            Costs
                                                                         Capitalized                           Development
                                                                         Subsequent                                and
                                                                             to        Land and   Building and Construction
 Property Name     Type      Location      Encumbrances  Land   Building Acquisition Improvements Improvements in Progress
 -------------    ------ ----------------- ------------ ------- -------- ----------- ------------ ------------ ------------
<S>               <C>    <C>               <C>          <C>     <C>      <C>         <C>          <C>          <C>
195 West
Street..........  Office Waltham, MA             --       1,611   6,652       621        1,611        7,273         --
92-100 Hayden
Avenue..........  Office Lexington, MA         9,065        594   6,748       880          595        7,627         --
204 Second
Avenue..........  Office Waltham, MA             --          37   2,402       632           37        3,034         --
8 Arlington
Street..........  Office Boston, MA              --          90   1,988        61           90        2,049         --
Carnegie
Center/Tower
One.............  Office New Jersey           63,693     70,146 216,061        43       70,146      216,104         --
Candler
Building........  Office Baltimore, MD           --      12,500  48,734         4       12,500       48,738         --
Metropolitan
Square..........  Office Washington, DC      107,386     35,000 151,709       424       35,000      152,133         --
Prudential
Center..........  Office Boston, MA          298,686    131,850 443,180     9,083      131,850      449,584       2,679
Reservoir
Place...........  Office Waltham, MA          77,006     18,207  88,018         3       18,207       88,021         --
Embarcadero
Center..........  Office San Francisco, CA   729,637    211,297 996,442       --       211,297      996,422         --
910 Clopper
Road............  Office Gaithersburg, MD        --       2,000  15,448       --         2,000       15,448         --
Fullerton
Square..........  Office Springfield, VA         --       3,045  11,522       --         3,045       11,522         --
7450 Boston
Boulevard,
Building Three..  Office Springfield, VA         --       1,165   4,681        27        1,165        4,708         --
Hilltop Business
Center..........  Office San Francisco, CA     4,417         53     492       381           53          873         --
7435 Boston
Boulevard,
Building One....  Office Springfield, VA         --         392   3,822     1,973          486        5,701         --
7601 Boston
Boulevard,
Building Eight..  Office Springfield, VA         --         200     878     3,505          378        4,205         --
8000 Grainger
Court, Building
Five............  Office Springfield, VA         --         366   4,282       966          453        5,161         --
7700 Boston
Boulevard,
Building
Twelve..........  Office Springfield, VA         --       1,105   1,042     8,046        1,105        9,088         --
7500 Boston
Boulevard,
Building Six....  Office Springfield, VA         --         138   3,749       244          273        3,858         --
7501 Boston
Boulevard,
Building Seven..  Office Springfield, VA         --         665     878     8,407          665        9,285         --
7600 Boston
Boulevard,
Building Nine...  Office Springfield, VA         --         127   2,839     1,540          189        4,317         --
Fourteen
Cambridge
Center..........  Office Cambridge, MA           --         110   4,483       569          110        5,052         --
164 Lexington
Road............  Office Billerica, MA           --         592   1,370       131          592        1,501         --
930 Clopper
Road............  Office Gaithersburg, MD        --       1,200   6,506       --         1,200        6,506         --
Sugarland
Building Two....  Office Herndon, VA             --         834   3,216     1,463          834        4,679         --
7374 Boston
Boulevard,
Building Four...  Office Springfield, VA         --         241   1,605       423          303        1,966         --
Sugarland
Building One....  Office Herndon, VA             --         735   2,739     2,577          735        5,316         --
8000 Corporate
Court, Building
Eleven..........  Office Springfield, VA         --         136   3,071       109          214        3,096           6
7451 Boston
Boulevard,
Building Two....  Office Springfield, VA         --         249   1,542     1,430          535        2,686         --
17 Hartwell
Avenue..........  Office Lexington, MA           --          26     150       596           26          746         --
<CAPTION>
                            Accumulated  Year(s) Built/  Depreciable
 Property Name      Total   Depreciation   Renovated    Lives (Years)
 -------------    --------- ------------ -------------- -------------
<S>               <C>       <C>          <C>            <C>
195 West
Street..........      8,884    1,692     1990                (1)
92-100 Hayden
Avenue..........      8,222    2,946     1985                (1)
204 Second
Avenue..........      3,071    1,431     1981/1993           (1)
8 Arlington
Street..........      2,139    2,032     1860-1920/1989      (1)
Carnegie
Center/Tower
One.............    286,250    2,700     1983-1998           (1)
Candler
Building........     61,238      545     1911/1990           (1)
Metropolitan
Square..........    187,133    1,813     1982/1986           (1)
Prudential
Center..........    584,113    5,537     1965/1993           (1)
Reservoir
Place...........    106,228      379     1955/1987           (1)
Embarcadero
Center..........  1,207,719    3,436     1924/1989           (1)
910 Clopper
Road............     17,448      354     1982                (1)
Fullerton
Square..........     14,567      264     1987                (1)
7450 Boston
Boulevard,
Building Three..      5,873       63     1987                (1)
Hilltop Business
Center..........        926    1,305     early 1970's        (1)
7435 Boston
Boulevard,
Building One....      6,187    2,075     1982                (1)
7601 Boston
Boulevard,
Building Eight..      4,583    1,491     1986                (1)
8000 Grainger
Court, Building
Five............      5,614    1,735     1984                (1)
7700 Boston
Boulevard,
Building
Twelve..........     10,193      273     1997                (1)
7500 Boston
Boulevard,
Building Six....      4,131    1,383     1985                (1)
7501 Boston
Boulevard,
Building Seven..      9,950      319     1997                (1)
7600 Boston
Boulevard,
Building Nine...      4,506    1,572     1987                (1)
Fourteen
Cambridge
Center..........      5,162    1,814     1983                (1)
164 Lexington
Road............      2,093      115     1982                (1)
930 Clopper
Road............      7,706      149     1989                (1)
Sugarland
Building Two....      5,513      162     1986/1997           (1)
7374 Boston
Boulevard,
Building Four...      2,269      768     1984                (1)
Sugarland
Building One....      6,051      321     1985/1997           (1)
8000 Corporate
Court, Building
Eleven..........      3,316      825     1989                (1)
7451 Boston
Boulevard,
Building Two....      3,221    1,717     1982                (1)
17 Hartwell
Avenue..........        772      463     1968                (1)
</TABLE>
 
                                      F-22
<PAGE>
 
                            BOSTON PROPERTIES,INC.
 
             SCHEDULE 3--REAL ESTATE AND ACCUMULATED DEPRECIATION
                               December 31, 1998
                            (dollars in thousands)
 
<TABLE>
<CAPTION>
                                                                               Costs
                                                                            Capitalized                           Development
                                                                            Subsequent                                and
                                                                                to        Land and   Building and Construction
 Property Name       Type         Location      Encumbrances Land  Building Acquisition Improvements Improvements in Progress
 -------------    ----------- ----------------- ------------ ----- -------- ----------- ------------ ------------ ------------
<S>               <C>         <C>               <C>          <C>   <C>      <C>         <C>          <C>          <C>
7375 Boston
Boulevard,
Building Ten....  Office      Springfield, VA         --        23   2,685       627           47        3,288          --
2391 West Winton
Avenue..........  Industrial  Hayward, CA             --       182   1,217       606          182        1,823          --
40-46 Harvard
Street..........  Industrial  Westwood, MA            --       351   1,782     1,327          351        3,109          --
38 Cabot
Boulevard.......  Industrial  Bucks County, PA        --       329   1,238     2,037          329        3,275          --
6201 Columbia
Park Road,
Building Two....  Industrial  Landover, MD            --       505   2,746     1,146          960        3,437          --
2000 South Club
Drive, Building
Three...........  Industrial  Landover, MD            --       465   2,125       729          859        2,460          --
25-33 Dartmouth
Street..........  Industrial  Westwood, MA            --       273   1,596       495          273        2,091          --
1950 Stanford
Court, Building
One.............  Industrial  Landover, MD            --       269   1,554       196          350        1,669          --
560 Forbes
Boulevard.......  Industrial  San Francisco, CA       --        48     435       287           48          722          --
430 Rozzi
Place...........  Industrial  San Francisco, CA       --        24     217       144           24          361          --
Long Wharf
Marriott........  Hotel       Boston, MA              --     1,752  31,904     8,535        1,752       40,439          --
Cambridge Center
Marriott........  Hotel       Cambridge, MA           --       478  37,918     4,018          478       41,936          --
Cambridge Center
North Garage....  Garage      Cambridge, MA           --     1,163  11,633         8        1,163       11,641          --
1301 New York
Ave.............  Development Washington, DC       24,965    9,250  18,750     4,155        9,250       18,750        4,155
Cambridge Master
Plan............  Development Cambridge, MA           --       --      --      3,542        1,117            4        2,421
Virginia Master
Plan............  Development Springfield, VA         --       --      --      1,520          655          175          690
Maryland Master
Plan............  Development Landover, MD            --       --      --        506          464          --            42
Cambridge Center
Eight...........  Development Cambridge, MA           --       --      --     15,937        1,046          --        14,891
181 Spring
Street..........  Development Lexington, MA           --       --      --      9,000        1,685          --         7,315
Residence Inn by
Marriott........  Development Cambridge, MA           --       --      --     22,243          816          --        21,427
Andover Tech
Center..........  Development Andover, MA             --       --      --      5,299        4,300          --           999
200 West
Street..........  Development Waltham, MA             --       --      --     26,278       13,119          --        13,159
Decoverly Four..  Development Rockville, MD           --       --      --      1,749        1,650          --            99
Decoverly Five..  Development Rockville, MD           --       --      --      1,706        1,665          --            41
Decoverly Six...  Development Rockville, MD           --       --      --      2,028        1,979          --            49
Decoverly
Seven...........  Development Rockville, MD           --       --      --      5,067        4,521          --           546
12050 Sunset
Hills Road......  Development Reston, VA              --       --      --      5,415        4,714          --           701
12280 Sunrise
Valley Drive....  Development Reston, VA              --       --      --      3,824        3,593          --           231
Arboretum.......  Development Reston, VA              --       --      --     10,369        2,850          --         7,519
Tower Oaks......  Development Rockville, MD           --       --      --     26,403       24,652          --         1,751
Washingtonian
North...........  Development Gaithersburg, MD        --       --      --     16,834       11,770          --         5,064
Broad Run
Business Park...  Development Loudon County, VA       --       --      --      5,641        5,457          --           184
<CAPTION>
                         Accumulated  Year(s)Built/  Depreciable
 Property Name    Total  Depreciation   Renovated   Lives (Years)
 -------------    ------ ------------ ------------- -------------
<S>               <C>    <C>          <C>           <C>
7375 Boston
Boulevard,
Building Ten....   3,335     1,039    1988               (1)
2391 West Winton
Avenue..........   2,005       972    1974               (1)
40-46 Harvard
Street..........   3,460     2,724    1967/1996          (1)
38 Cabot
Boulevard.......   3,604     2,410    1972/1984          (1)
6201 Columbia
Park Road,
Building Two....   4,397       981    1986               (1)
2000 South Club
Drive, Building
Three...........   3,319       848    1988               (1)
25-33 Dartmouth
Street..........   2,364     1,343    1966/1996          (1)
1950 Stanford
Court, Building
One.............   2,019       537    1986               (1)
560 Forbes
Boulevard.......     770       874    early 1970's       (1)
430 Rozzi
Place...........     385        69    early 1970's       (1)
Long Wharf
Marriott........  42,191    16,685    1982               (1)
Cambridge Center
Marriott........  42,414    12,240    1986               (1)
Cambridge Center
North Garage....  12,804     2,638    1990               (1)
1301 New York
Ave.............  32,155       --     1983/1998          N/A
Cambridge Master
Plan............   3,542         2    Various            N/A
Virginia Master
Plan............   1,520       175    Various            N/A
Maryland Master
Plan............     506       --     Various            N/A
Cambridge Center
Eight...........  15,937       --     Various            N/A
181 Spring
Street..........   9,000       --     Various            N/A
Residence Inn by
Marriott........  22,243       --     1999               (1)
Andover Tech
Center..........   5,299       --     Various            N/A
200 West
Street..........  26,278       --     Various            N/A
Decoverly Four..   1,749       --     Various            N/A
Decoverly Five..   1,706       --     Various            N/A
Decoverly Six...   2,028       --     Various            N/A
Decoverly
Seven...........   5,067       --     Various            N/A
12050 Sunset
Hills Road......   5,415       --     Various            N/A
12280 Sunrise
Valley Drive....   3,824       --     Various            N/A
Arboretum.......  10,369       --     Various            N/A
Tower Oaks......  26,403       --     Various            N/A
Washingtonian
North...........  16,834       --     Various            N/A
Broad Run
Business Park...   5,641       --     Various            N/A
</TABLE>
 
                                      F-23
<PAGE>
 
                            BOSTON PROPERTIES, INC.
 
             SCHEDULE 3--REAL ESTATE AND ACCUMULATED DEPRECIATION
                               December 31, 1998
                            (dollars in thousands)
 
<TABLE>
<CAPTION>
                                                                              Costs                               Development
                                                                           Capitalized                                and
                                                                          Subsequent to   Land and   Building and Construction
 Property Name      Type      Location   Encumbrances   Land    Building   Acquisition  Improvements Improvements in Progress
 -------------   ----------- ----------- ------------ -------- ---------- ------------- ------------ ------------ ------------
<S>              <C>         <C>         <C>          <C>      <C>        <C>           <C>          <C>          <C>
New Dominion
Tech Park....... Development Herndon, VA         --        --         --       7,830          7,396          --         434
                                          $2,653,581  $946,231 $3,453,231   $483,409     $1,045,628   $3,752,840    $84,403
                                          ==========  ======== ==========   ========     ==========   ==========    =======
<CAPTION>
                            Accumulated  Year (s) Built/  Depreciable
 Property Name     Total    Depreciation    Renovated    Lives (Years)
 -------------   ---------- ------------ --------------- -------------
<S>              <C>        <C>          <C>             <C>
New Dominion
Tech Park.......      7,830        --    Various              N/A
                 $4,882,871   $336,165
                 ========== ============
</TABLE>
 
- -----
(1) Depreciation of the buildings and improvements are calculated over lives
    ranging from the life of the lease to 40 years.
(2) The aggregate cost and accumulated depreciation for tax purposes was
    approximately $8,509,000 and $767,000, respectively.
 
                                      F-24
<PAGE>
 
                            BOSTON PROPERTIES, INC.
 
                    REAL ESTATE AND ACCUMULATED DEPRECIATION
                               December 31, 1998
                             (dollars in thousands)
 
   A summary of activity for real estate and accumulated depreciation is as
follows:
 
<TABLE>
<CAPTION>
                                               1998        1997        1996
                                            ----------  ----------  ----------
<S>                                         <C>         <C>         <C>
Real Estate:
  Balance at the beginning of the year..... $1,754,780  $1,001,537  $  979,493
    Additions to and improvements of real
     estate................................  3,130,509     754,185      28,110
    Write-off of fully depreciated assets..     (2,418)       (942)     (6,066)
                                            ----------  ----------  ----------
  Balance at the end of the year........... $4,882,871  $1,754,780  $1,001,537
                                            ==========  ==========  ==========
Accumulated Depreciation:
  Balance at the beginning of the year..... $  266,987  $  238,469  $  215,303
    Depreciation expense...................     71,596      29,460      29,232
    Write-off of fully depreciated assets..     (2,418)       (942)     (6,066)
                                            ----------  ----------  ----------
  Balance at the end of the year........... $  336,165  $  266,987  $  238,469
                                            ==========  ==========  ==========
</TABLE>
 
                                      F-25

<PAGE>
 

                      CONSENT OF INDEPENDENT ACCOUNTANTS




We consent to the incorporation by reference in the registration statements of 
Boston Properties, Inc. on Forms S-3 (File Numbers, 333-60219, 333-61799, 
333-68379, 333-69375 and 333-70765) of our report dated January 24, 1999, except
for Note 16, for which the date is February 10, 1999, on our audits of the 
consolidated financial statements of Boston Properties, Inc. as of December 
31, 1998 and 1997, and for the year ended December 31, 1998 and the period from 
June 23, 1997 to December 31, 1997 and our audits of the combined financial 
statements of the Boston Properties Predecessor Group for the period from 
january 1, 1997 to June 22, 1997 and for the year ended December 31, 1996, which
is included in the Annual Report on Form 10-K.






March 30, 1999









<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          12,166
<SECURITIES>                                         0
<RECEIVABLES>                                   40,830
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     0
<PP&E>                                       4,917,193
<DEPRECIATION>                                  75,418
<TOTAL-ASSETS>                               5,235,087
<CURRENT-LIABILITIES>                                0
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           635
<OTHER-SE>                                     947,846
<TOTAL-LIABILITY-AND-EQUITY>                 5,235,087
<SALES>                                        487,577
<TOTAL-REVENUES>                               513,847
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             124,860
<INCOME-PRETAX>                                      0
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             98,593
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (5,481)
<CHANGES>                                            0
<NET-INCOME>                                    93,112
<EPS-PRIMARY>                                     1.53
<EPS-DILUTED>                                     1.52
        

</TABLE>


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