ALEXANDRIA REAL ESTATE EQUITIES INC
8-K, 1999-02-23
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC 20549

                                ---------------

                                    FORM 8-K


                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


       Date of Report (Date of earliest event reported): FEBRUARY 18, 1999


                      ALEXANDRIA REAL ESTATE EQUITIES, INC.
               (Exact Name of Registrant as Specified in Charter)

           MARYLAND                       1-12993                95-4502084
(State or Other Jurisdiction of         (Commission            (IRS Employer
        Incorporation)                  File Number)        Identification No.)


               135 NORTH LOS ROBLES AVENUE
               SUITE 250
               PASADENA, CALIFORNIA                         91101
         (Address of Principal Executive Offices)         (Zip Code)


      Registrant's telephone number, including area code: (626) 578-0777

<PAGE>

ITEM 5.  OTHER EVENTS.

     On February 18, 1999, Alexandria Real Estate Equities, Inc. (the 
"Company") entered into an Underwriting Agreement with Goldman, Sachs & Co. 
("Goldman Sachs"), pursuant to which the Company has agreed to sell, and 
Goldman Sachs has agreed to buy, 1,150,000 shares (including pursuant to an 
over-allotment option) of the Company's common stock, par value $.01 per 
share (the "Shares"), at a purchase price of $26.648 per Share, after 
deducting underwriting discounts, resulting in aggregate proceeds to the 
Company of approximately $30.6 million. The Shares have been registered under 
the Securities Act of 1933, as amended (the "Act"), pursuant to an effective 
Registration Statement on Form S-3 (No. 333-56451). In connection with the 
sale, the Company has filed a Prospectus Supplement, dated February 18, 1999, 
and a Base Propsectus, dated June 30, 1998, with the Securities and Exchange 
Commission, pursuant to Rule 424(b)(5) promulgated under the Act. Goldman 
Sachs intends to offer the Shares for sale to the public as described in the 
Prospectus Supplement. The Underwriting Agreement is attached hereto as 
Exhibit 1.1.

ITEM 7.  FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

         (c)  EXHIBITS.

              1.1  Underwriting Agreement, dated as of February 18, 1999, by 
                   and between the Company and Goldman Sachs.


                                       2

<PAGE>

                                   SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the 
registrant has duly caused this report to be signed on its behalf by the 
undersigned hereunto duly authorized.

                                       ALEXANDRIA REAL ESTATE
                                       EQUITIES, INC.


Date:  February 22, 1999               By: /s/ Peter J. Nelson
                                          --------------------------------
                                          Peter J. Nelson
                                          Chief Financial Officer, Senior 
                                            Vice President, Treasurer and 
                                            Secretary


<PAGE>

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>

EXHIBIT                                                           SEQUENTIALLY
NUMBER                               EXHIBIT                      NUMBERED PAGE
- -------                              -------                      -------------
<C>      <S>                                                      <C>
  1.1    Underwriting Agreement, dated as of February 18, 1999,
         by and between the Company and Goldman Sachs
</TABLE>




                                     Ex-1



<PAGE>

                     ALEXANDRIA REAL ESTATE EQUITIES, INC.

                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)

                                  ------------

                             UNDERWRITING AGREEMENT

                                                            February 18, 1999
Goldman, Sachs & Co.,
  As representatives of the 
  several Underwriters named 
  in Schedule I hereto,
85 Broad Street,
New York, New York 10004.

Ladies and Gentlemen:

     Alexandria Real Estate Equities, Inc., a Maryland corporation (the 
"Company"), proposes, subject to the terms and conditions stated herein, to 
issue and sell to the Underwriters named in Schedule I hereto (the 
"Underwriters") an aggregate of 1,000,000 shares  (the "Firm Shares") and, at 
the election of the Underwriters, up to 150,000 additional shares (the 
"Optional Shares") of Common Stock, par value $.01 per share ("Stock"), of 
the Company (the Firm Shares and the Optional Shares that the Underwriters 
elect to purchase pursuant to Section 2 hereof being collectively called the 
"Shares").

     1.   The Company represents and warrants to, and agrees with, each of 
the Underwriters that:

     (a)  A registration statement on Form S-3 (File No. 333-56451) (the 
"Initial Registration Statement") in respect of the Shares has been filed 
with the Securities and Exchange Commission (the "Commission"); the Initial 
Registration Statement and any post-effective amendment thereto, each in the 
form heretofore delivered to you, and, excluding exhibits thereto but 
including all documents incorporated by reference in the prospectus contained 
therein, for each of the other Underwriters, have been declared effective by 
the Commission in such form; other than a registration statement, if any, 
increasing the size of the offering (a "Rule 462(b) Registration Statement"), 
filed pursuant to Rule 462(b) under the Securities Act of 1933, as amended 
(the "Act"), which became effective upon filing, no other document with 
respect to the Initial Registration Statement or any document incorporated by 
reference therein has heretofore been filed with the Commission; and no stop 
order suspending the effectiveness of the Initial Registration Statement or 
any part thereof, any post-effective amendment thereto or the Rule 462(b) 
Registration Statement, if any, has been issued and no proceeding for that 
purpose has been initiated or, to the 

<PAGE>

Company's knowledge, threatened by the Commission (any preliminary prospectus 
included in the Initial Registration Statement or filed with the Commission 
pursuant to Rule 424(a) of the rules and regulations of the Commission under 
the Act is hereinafter called a "Preliminary Prospectus"; the various parts 
of the Initial Registration Statement and the Rule 462(b) Registration 
Statement, if any, including all exhibits thereto and including (i) the 
information contained in the form of final prospectus filed with the 
Commission pursuant to Rule 424(b) under the Act in accordance with Section 
5(a) hereof and deemed by virtue of Rule 430A under the Act to be part of the 
Initial Registration Statement at the time it was declared effective and (ii) 
the documents incorporated by reference in the prospectus contained in the 
Initial Registration Statement at the time such part of the Initial 
Registration Statement became effective, each as amended at the time such 
part of the Initial Registration Statement became effective or such part of 
the Rule 462(b) Registration Statement, if any, became or hereafter becomes 
effective, are hereinafter collectively called the "Registration Statement"; 
such final prospectus, in the form first filed pursuant to Rule 424(b) under 
the Act, is hereinafter called the "Prospectus"; any reference herein to any 
Preliminary Prospectus or the Prospectus shall be deemed to refer to and 
include the documents incorporated by reference therein pursuant to Item 12 
of Form S-3 under the Act, as of the date of such Preliminary Prospectus or 
Prospectus, as the case may be; any reference to any amendment or supplement 
to any Preliminary Prospectus or the Prospectus shall be deemed to refer to 
and include any documents filed after the date of such Preliminary Prospectus 
or Prospectus, as the case may be, under the Securities Exchange Act of 1934, 
as amended (the "Exchange Act"), and incorporated by reference in such 
Preliminary Prospectus or Prospectus, as the case may be; and any reference 
to any amendment to the Registration Statement shall be deemed to refer to 
and include any annual report of the Company filed pursuant to Section 13(a) 
or 15(d) of the Exchange Act after the effective date of the Initial 
Registration Statement that is incorporated by reference in the Registration 
Statement;

     (b)  The documents incorporated by reference in the Prospectus, when 
they became effective or were filed with the Commission, as the case may be, 
conformed in all material respects to the requirements of the Act or the 
Exchange Act, as applicable, and the rules and regulations of the Commission 
thereunder, and none of such documents contained an untrue statement of a 
material fact or omitted to state a material fact required to be stated 
therein or necessary to make the statements therein not misleading; and any 
further documents so filed and incorporated by reference in the Prospectus or 
any further amendment or supplement thereto, when such documents become 
effective or are filed with the Commission, as the case may be, will conform 
in all material respects to the requirements of the Act or the Exchange Act, 
as applicable, and the rules and regulations of the Commission thereunder; 
and will not contain an untrue statement of a material fact or omit to state 
a material fact required to be stated therein or necessary to make the 
statements therein not misleading; PROVIDED, HOWEVER, that this representation 
and warranty shall not apply to any statements or omissions made in reliance 
upon and in conformity with information furnished in writing to the Company 
by an Underwriter through Goldman, Sachs & Co. expressly for use therein;

     (c)  The Registration Statement, at the time it became effective, 
conformed, and any further amendments or supplements to the Registration 
Statement, when they become effective, will conform, in all material respects 
to the requirements of the Act and the rules and regulations of the 
Commission thereunder and did not and will not, as of the applicable 
effective date, contain an untrue statement of a material fact or omit to 
state a material fact required to be stated therein or necessary to make the 
statements therein not misleading; PROVIDED, HOWEVER, that this 
representation and warranty shall not apply to any statements or omissions 
made in reliance upon 


                                       2

<PAGE>

and in conformity with information furnished in writing to the Company by an 
Underwriter through Goldman, Sachs & Co. expressly for use therein;

     (d)  The Prospectus, when filed with the Commission, conformed and any 
amendment or supplement thereto, at the respective times of filing with the 
Commission, will conform, in all material respects to the requirements of the 
Act and the rules and regulations of the Commission thereunder, and will not, 
as of such respective filing times, contain an untrue statement of a material 
fact or omit to state a material fact required to be stated therein or 
necessary to make the statements therein, in light of the circumstances under 
which they were made, not misleading; PROVIDED, HOWEVER, that this 
representation and warranty shall not apply to any statements or omissions 
made in reliance upon and in conformity with information furnished in writing 
to the Company by an Underwriter through Goldman, Sachs & Co. expressly for 
use therein;

     (e)  Neither the Company nor any of its subsidiaries has sustained since 
the date of the latest audited financial statements included or incorporated 
by reference in the Prospectus any loss or interference with its business 
from fire, explosion, flood or other calamity, whether or not covered by 
insurance, or from any labor dispute or court or governmental action, order 
or decree, otherwise than as set forth or contemplated in the Prospectus, 
that singly or in the aggregate could be reasonably expected to have a 
material adverse effect, in or affecting the general affairs, management, 
financial position, stockholders' equity or results of operations of the 
Company and its subsidiaries, taken as a whole (a "Material Adverse Effect"); 
and, since the respective dates as of which information is given in the 
Registration Statement and the Prospectus, there has not been any change in 
the capital stock or long-term debt of the Company or any subsidiary of the 
Company that constitutes a "significant subsidiary" as defined in Rule 1-02 
of Regulation S-X (each, a "Subsidiary" and collectively, the "Subsidiaries") 
or any Material Adverse Effect or any development involving a prospective 
Material Adverse Effect in any such case, otherwise than as set forth or 
contemplated in the Prospectus;

     (f)  The Company and its subsidiaries have good and marketable title in 
fee simple to all real property (other than (i) the Company's ground 
leasehold interest in the Buildings 79 and 96 Charlestown Navy Yard and 8000, 
9000 and 10,000 Virginia Manor Road properties and (ii) the Company's 
interest in the 1311, 1401 and 1431 Harbor Bay Parkway property, in which the 
Company owns a commercial condominium interest together with an undivided 
interest in the common areas of the project in which the property is a part) 
and good and marketable title to all personal property owned by them, in each 
case free and clear of all liens, encumbrances and defects, except for the 
related mortgage indebtedness described in the Prospectus and such other 
liens, encumbrances and defects as are described in the Prospectus or such as 
could not reasonably be expected to have a Material Adverse Effect and do not 
materially interfere with the use made and proposed to be made of such 
property by the Company and its subsidiaries; and any real property and 
buildings held under lease (other than ground leases referred to above) by 
the Company and its subsidiaries that are described in the Prospectus are 
held by them under valid, subsisting and enforceable leases with such 
exceptions as are not material and do not materially interfere with the use 
made and proposed to be made of such property and buildings by the Company 
and its subsidiaries;

     (g)  The Company has been duly incorporated and is validly existing as a 
corporation in good standing under the laws of the State of Maryland, with 
power and authority (corporate and other) to own its properties and conduct 
its business as described in the Prospectus, and has been duly qualified as a 
foreign corporation for the transaction of business and is in good standing 
under 


                                       3

<PAGE>

the laws of each other jurisdiction in which it owns or leases properties or 
conducts any business so as to require such qualification, or is subject to 
no material liability or disability by reason of the failure to be so 
qualified in any such jurisdiction; each subsidiary of the Company has been 
duly organized and is validly existing and in good standing under the laws of 
its jurisdiction of organization; and each Subsidiary and its state of 
incorporation is set forth on Exhibit A hereto;

     (h)  The Company has an authorized capitalization as set forth in the 
Prospectus, and all of the issued shares of stock of the Company have been 
duly and validly authorized and issued, are fully paid and non-assessable and 
conform to the description of the Stock contained in the Prospectus under the 
heading "Description of Capital Stock"; and all of the issued shares of 
capital stock, partnership interests or membership interests of each 
subsidiary of the Company have been duly and validly authorized and issued, 
are fully paid and non-assessable and (except for directors' qualifying 
shares) are owned directly or indirectly by the Company, free and clear of 
all liens, encumbrances, equities or claims, except such as are described in 
the Prospectus or such as do not materially interfere with the ownership 
thereof by the Company and its subsidiaries;

     (i)  The unissued Shares to be issued and sold by the Company to the 
Underwriters hereunder have been duly and validly authorized and, when issued 
and delivered against payment therefor as provided herein, will be duly and 
validly issued and fully paid and non-assessable and will conform to the 
description of the Stock contained in the Prospectus;

     (j)  The issue and sale of the Shares by the Company and the compliance 
by the Company with all of the provisions of this Agreement and the 
consummation of the transactions herein contemplated will not (i) conflict 
with or result in a breach or violation of any of the terms or provisions of, 
or constitute a default under, any indenture, mortgage, deed of trust, loan 
agreement or other agreement or instrument to which the Company or any of its 
subsidiaries is a party or by which the Company or any of its subsidiaries is 
bound or to which any of the property or assets of the Company or any of its 
subsidiaries is subject, except for such conflicts, breaches, violations or 
defaults that could not be reasonably expected to result in a Material 
Adverse Effect, (ii) result in any violation of the provisions of the charter 
Bylaws of the Company or (iii) result in any violation of any statute or any 
order, rule or regulation of any court or governmental agency or body having 
jurisdiction over the Company or any of its subsidiaries or any of their 
properties, except for such violations that could not be reasonably expected 
to result in a Material Adverse Effect; and no consent, approval, 
authorization, order, registration or qualification of or with any such court 
or governmental agency or body is required for the issue and sale of the 
Shares or the consummation by the Company of the transactions contemplated by 
this Agreement, except the registration under the Act of the Shares and such 
consents, approvals, authorizations, registrations or qualifications (i) as 
may be required under state securities or Blue Sky laws in connection with 
the purchase and distribution of the Shares by the Underwriters or (ii) as 
have already been obtained;

     (k)  Neither the Company nor any of its subsidiaries is (i) in violation 
of its charter Bylaws or similar organizational document or (ii) in default 
in the performance or observance of any obligation, agreement, covenant or 
condition contained in any indenture, mortgage, deed of trust, loan 
agreement, lease or other agreement or instrument to which it is a party or 
by which it or any of its properties may be bound, except, in the case of 
this clause (ii), for such defaults that could not be reasonably expected to 
result in a Material Adverse Effect;

     (l)  The statements set forth in the Prospectus under the caption 
"Description of Capital Stock", insofar as they purport to constitute a 
summary of the terms of the Stock and under the 


                                       4

<PAGE>

caption "Federal Income Tax Considerations", insofar as they purport to 
describe the provisions of the laws and documents referred to therein, are 
accurate, complete and fair in all material respects;

     (m)  Other than as set forth in the Prospectus, there are no legal or 
governmental proceedings pending to which the Company or any of its 
subsidiaries is a party or of which any property of the Company or any of its 
subsidiaries is the subject which, could reasonably be expected to have a 
Material Adverse Effect; and, to the best of the Company's knowledge, no such 
proceedings are threatened or contemplated by governmental authorities or 
threatened by others;

     (n)  The Company is not and, after giving effect to the offering and 
sale of the Shares, will not be, an "investment company", as such term is 
defined in the Investment Company Act of 1940, as amended (the "Investment 
Company Act");

     (o)  Ernst & Young LLP, who have certified certain financial statements 
of the Company and its subsidiaries and certain properties acquired by the 
Company and its subsidiaries, are independent public accountants as required 
by the Act and the rules and regulations of the Commission thereunder;

     (p)  Commencing with the Company's taxable year ended December 31, 1996, 
the Company has been organized and operated in conformity with the 
requirements for qualification as a real estate investment trust ("REIT") 
under the Internal Revenue Code of 1986, as amended (the "Code"), and its 
actual method of operation through the date of this Agreement and its planned 
method of operation will continue to enable it to meet the requirements for 
qualification and taxation as a REIT for the taxable year ended December 31, 
1999 and thereafter.

     (q)  Except as set forth in the Prospectus, the Company has no knowledge 
of (a) the presence of any hazardous substances, hazardous materials, toxic 
substances or hazardous or toxic wastes (collectively, "Hazardous Materials") 
on any of the properties owned by it in violation of law or in excess of 
regulatory action levels that could reasonably be expected to have a Material 
Adverse Effect or (b) any unlawful spills, releases, discharges or disposal 
of Hazardous Materials that have occurred or are presently occurring on or 
from such properties as a result of any construction on or operation and use 
of such properties, which presence or occurrence could reasonably be expected 
to have a Material Adverse Effect; and in connection with the construction on 
or operation and use of the properties owned by the Company, it has no 
knowledge of any failure to comply with all applicable local, state and 
federal environmental laws, regulations, agency requirements, ordinances and 
administrative and judicial orders that could reasonably be expected to have 
a Material Adverse Effect; and

     (r)  The Company has reviewed its operations and that of its 
subsidiaries and is reviewing that of any third parties with which the 
Company or any of its subsidiaries has a material relationship to evaluate 
the extent to which the business or operations of the Company or any of its 
subsidiaries will be affected by the Year 2000 Problem.  As a result of such 
review, the Company has no reason to believe, and does not believe, that the 
Year 2000 Problem will have a Material Adverse Effect.  The "Year 2000 
Problem" as used herein means any significant risk that computer hardware or 
software used in the receipt, transmission, processing, manipulation, 
storage, retrieval, retransmission or other utilization of data or in the 
operation of mechanical or electrical systems of any kind will not, in the 
case of dates or time periods occurring after December 31, 1999, function at 
least as effectively as in the case of dates or time periods occurring prior 
to January 1, 2000.


                                       5

<PAGE>

     2.   Subject to the terms and conditions herein set forth, (a) the 
Company agrees to issue and sell to each of the Underwriters, and each of the 
Underwriters agrees, severally and not jointly, to purchase from the Company, 
at a purchase price per share of $26.648 the number of Firm Shares set forth 
opposite the name of such Underwriter in Schedule I hereto and (b) in the 
event and to the extent that the Underwriters shall exercise the election to 
purchase Optional Shares as provided below, the Company agrees to issue and 
sell to each of the Underwriters, and each of the Underwriters agrees, 
severally and not jointly, to purchase from the Company, at the purchase 
price per share set forth in clause (a) of this Section 2, that portion of 
the number of Optional Shares as to which such election shall have been 
exercised (to be adjusted by you so as to eliminate fractional shares) 
determined by multiplying such number of Optional Shares by a fraction, the 
numerator of which is the maximum number of Optional Shares which such 
Underwriter is entitled to purchase as set forth opposite the name of such 
Underwriter in Schedule I hereto and the denominator of which is the maximum 
number of Optional Shares that all of the Underwriters are entitled to 
purchase hereunder.

     The Company hereby grants to the Underwriters the right to purchase at 
their election up to 150,000 Optional Shares, at the purchase price per share 
set forth in the paragraph above, for the sole purpose of covering 
overallotments in the sale of the Firm Shares.  Any such election to purchase 
Optional Shares may be exercised only by written notice from you to the 
Company, given within a period of 30 calendar days after the date of this 
Agreement, setting forth the aggregate number of Optional Shares to be 
purchased and the date on which such Optional Shares are to be delivered, as 
determined by you but in no event earlier than the First Time of Delivery (as 
defined in Section 4 hereof) or, unless you and the Company otherwise agree 
in writing, earlier than two or later than ten business days after the date 
of such notice.

     3.   Upon the authorization by you of the release of the Firm Shares, 
the several Underwriters propose to offer the Firm Shares for sale upon the 
terms and conditions set forth in the Prospectus.

     4.   (a) The Shares to be purchased by each Underwriter hereunder, in 
definitive form, and in such authorized denominations and registered in such 
names as Goldman, Sachs & Co. may request upon at least forty-eight hours' 
prior notice to the Company shall, at the Time of Delivery, be delivered by 
or on behalf of the Company to Goldman, Sachs & Co., through the facilities 
of the Depository Trust Company ("DTC"), for the account of such Underwriter, 
against payment by or on behalf of such Underwriter of the purchase price 
therefor by wire transfer of Federal (same-day) funds to the account 
specified by the Company to Goldman, Sachs & Co. at least forty-eight hours 
in advance.  The Company will cause the certificates representing the Shares 
to be made available for checking and packaging at least twenty-four hours 
prior to the Time of Delivery (as defined below) with respect thereto at the 
office of DTC or its designated custodian (the "Designated Office").  The 
time and date of such delivery and payment shall be, with respect to the Firm 
Shares, 9:30 a.m., New York City time, on February 23, 1999 or such other 
time and date as Goldman, Sachs & Co. and the Company may agree upon in 
writing, and, with respect to the Optional Shares, 9:30 a.m., New York time, 
on the date specified by Goldman, Sachs & Co. in the written notice given by 
Goldman, Sachs & Co. of the Underwriters' election to purchase such Optional 
Shares, or such other time and date as Goldman, Sachs & Co. and the Company 
may agree upon in writing.  Such time and date for delivery of the Firm 
Shares is herein called the "First Time of Delivery", such time and date for 
delivery of the Optional Shares, if not the First Time of Delivery, is herein 
called the "Second Time of Delivery", and each such time and date for 
delivery is herein called a "Time of Delivery".


                                       6

<PAGE>

     (b)  The documents to be delivered at each Time of Delivery by or on 
behalf of the parties hereto pursuant to Section 7 hereof, including the 
cross receipt for the Shares and any additional documents requested by the 
Underwriters pursuant to Section 7(l) hereof, will be delivered at the 
offices of Sullivan & Cromwell, 125 Broad Street, New York, New York 10004 
(the "Closing Location"), and the Shares will be delivered at the Designated 
Office, all at such Time of Delivery.  A meeting will be held at the Closing 
Location at 3:00 p.m., New York City time, on the New York Business Day next 
preceding such Time of Delivery, at which meeting the final drafts of the 
documents to be delivered pursuant to the preceding sentence will be 
available for review by the parties hereto.  For the purposes of this Section 
4, "New York Business Day" shall mean each Monday, Tuesday, Wednesday, 
Thursday and Friday which is not a day on which banking institutions in New 
York are generally authorized or obligated by law or executive order to close.

5.   The Company agrees with each of the Underwriters:

          (a)  To prepare the Prospectus in a form approved by you and to file
     such Prospectus pursuant to Rule 424(b) under the Act not later than the
     Commission's close of business on the second business day following the
     execution and delivery of this Agreement, or, if applicable, such earlier
     time as may be required by Rule 430A(a)(3) under the Act; to make no
     further amendment or any supplement to the Registration Statement or
     Prospectus prior to the last Time of Delivery which shall be reasonably
     disapproved by you promptly after reasonable notice thereof; to advise you,
     promptly after it receives notice thereof, of the time when any amendment
     to the Registration Statement has been filed or becomes effective or any
     supplement to the Prospectus or any amended Prospectus has been filed and
     to furnish you with copies thereof; to file promptly all reports and any
     definitive proxy or information statements required to be filed by the
     Company with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d)
     of the Exchange Act subsequent to the date of the Prospectus and for so
     long as the delivery of a prospectus is required in connection with the
     offering or sale of the Shares; to advise you, promptly after it receives
     notice thereof, of the issuance by the Commission of any stop order or of
     any order preventing or suspending the use of any Preliminary Prospectus or
     prospectus, of the suspension of the qualification of the Shares for
     offering or sale in any jurisdiction, of the initiation or threatening of
     any proceeding for any such purpose, or of any request by the Commission
     for the amending or supplementing of the Registration Statement or
     Prospectus or for additional information; and, in the event of the issuance
     of any stop order or of any order preventing or suspending the use of any
     Preliminary Prospectus or prospectus or suspending any such qualification,
     promptly to use its best efforts to obtain the withdrawal of such order;

          (b)  Promptly from time to time to take such action as you may
     reasonably request to qualify the Shares for offering and sale under the
     securities laws of such jurisdictions as you may request and to comply with
     such laws so as to permit the continuance of sales and dealings therein in
     such jurisdictions for as long as may be necessary to complete the
     distribution of the Shares, provided that in connection therewith the
     Company shall not be required to qualify as a foreign corporation or to
     file a general consent to service of process in any jurisdiction;

          (c)  Prior to noon, New York City time, on the New York Business Day
     next succeeding the date of this Agreement (or prior to 5:00 P.M., New York
     City time, on such next New York Business Day if the First Time of Delivery
     is the fourth New York Business 


                                       7

<PAGE>

     Day following the date of this Agreement) and from time to time 
     thereafter, to furnish the Underwriters with copies of the Prospectus in 
     New York City in such quantities as you may reasonably request, and, if 
     the delivery of a prospectus is required at any time prior to the 
     expiration of nine months after the time of issue of the Prospectus in 
     connection with the offering or sale of the Shares and if at such time 
     any event shall have occurred as a result of which the Prospectus as 
     then amended or supplemented would include an untrue statement of a 
     material fact or omit to state any material fact necessary in order to 
     make the statements therein, in the light of the circumstances under 
     which they were made when such Prospectus is delivered, not misleading, 
     or, if for any other reason it shall be necessary during such period to 
     amend or supplement the Prospectus or to file under the Exchange Act any 
     document incorporated by reference in the Prospectus in order to comply 
     with the Act or the Exchange Act, to notify you and upon your request to 
     file such document and to prepare and furnish without charge to each 
     Underwriter and to any dealer in securities as many copies as you may 
     from time to time reasonably request of an amended Prospectus or a 
     supplement to the Prospectus which will correct such statement or 
     omission or effect such compliance, and in case any Underwriter is 
     required to deliver a prospectus in connection with sales of any of the 
     Shares at any time nine months or more after the time of issue of the 
     Prospectus, upon your request but at the expense of such Underwriter, to 
     prepare and deliver to such Underwriter as many copies as you may 
     request of an amended or supplemented Prospectus complying with Section 
     10(a)(3) of the Act;

          (d)  To make generally available to its securityholders as soon as
     practicable, but in any event not later than eighteen months after the
     effective date of the Registration Statement (as defined in Rule 158(c)
     under the Act), an earnings statement of the Company and its subsidiaries
     (which need not be audited) complying with Section 11(a) of the Act and the
     rules and regulations thereunder (including, at the option of the Company,
     Rule 158);

          (e)  During the period beginning from the date hereof and continuing
     to and including the date 90 days after the date of the Prospectus, not to
     offer, sell, contract to sell or otherwise dispose of, except as provided
     hereunder any securities of the Company that are substantially similar to
     the Shares, including but not limited to any securities that are
     convertible into or exchangeable for, or that represent the right to
     receive, Stock or any such substantially similar securities (other than (i)
     pursuant to employee stock option plans existing on, or upon the conversion
     or exchange of convertible or exchangeable securities outstanding as of,
     the date of this Agreement or (ii) issuances of Stock to Health Sciences
     Properties Holding Corporation ("Holdings") or its stockholders in exchange
     for an amount of shares of Stock held by Holdings or its stockholders that
     is greater than or equal to the number of shares of Stock being issued by
     the Company in such exchange), without your prior written consent;

          (f)  To furnish to its stockholders as soon as practicable after the
     end of each fiscal year an annual report (including a balance sheet and
     statements of income, stockholders' equity and cash flows of the Company
     and its consolidated subsidiaries certified by independent public
     accountants) and, as soon as practicable after the end of each of the first
     three quarters of each fiscal year (beginning with the fiscal quarter
     ending after the effective date of the Registration Statement), to make
     available to its stockholders consolidated summary financial information of
     the Company and its subsidiaries for such quarter in reasonable detail;


                                       8

<PAGE>

          (g)  During a period of five years from the effective date of the
     Registration Statement, to furnish to you copies of all reports or other
     communications (financial or other) furnished to stockholders and not
     publicly available on the Commission's EDGAR system, and to deliver to you
     (i) as soon as they are available, copies of any reports and financial
     statements furnished to or filed with the Commission or any national
     securities exchange on which any class of securities of the Company is
     listed unless such reports or financial statements are publicly available
     on the Commission's EDGAR system; and (ii) such additional information
     concerning the business and financial condition of the Company as you may
     from time to time reasonably request (such financial statements to be on a
     consolidated basis to the extent the accounts of the Company and its
     subsidiaries are consolidated in reports furnished to its stockholders
     generally or to the Commission);

          (h)  To use the net proceeds received by it from the sale of the
     Shares pursuant to this Agreement in the manner specified in the Prospectus
     under the caption "Use of Proceeds";

          (i)  To use its best efforts to list, subject to notice of issuance,
     the Shares on the New York Stock Exchange; 

          (j)  To continue to elect to qualify as a "real estate investment
     trust" under the Internal Revenue Code of 1986, as amended, and to use its
     best efforts to continue to meet the requirements to qualify as a "real
     estate investment trust" unless the Board of Directors of the Company
     determines (as evidenced by a Board resolution) in good faith that meeting
     such requirements is not in the best interests of the Company;

          (k)  Not to be or become, at any time prior to the expiration of three
     years after the last Time of Delivery, an "investment company", as such
     term is defined in the Investment Company Act;  and

          (l) If the Company elects to rely upon Rule 462(b), the Company shall
     file a Rule 462(b) Registration Statement with the Commission in compliance
     with Rule 462(b) by 10:00 P.M., Washington, D.C. time, on the date of this
     Agreement, and the Company shall at the time of filing either pay to the
     Commission the filing fee for the Rule 462(b) Registration Statement or
     give irrevocable instructions for the payment of such fee pursuant to Rule
     111(b) under the Act.

     6.   The Company covenants and agrees with the several Underwriters that 
the Company will pay or cause to be paid the following: (i) the fees, 
disbursements and expenses of the Company's counsel and accountants in 
connection with the registration of the Shares under the Act and all other 
expenses in connection with the preparation, printing and filing of the 
Registration Statement, any Preliminary Prospectus and the Prospectus and 
amendments and supplements thereto and the mailing and delivering of copies 
thereof to the Underwriters and dealers; (ii) the cost of printing or 
producing any Agreement among Underwriters, this Agreement, closing documents 
(including any compilations thereof) and any other documents in connection 
with the offering, purchase, sale and delivery of the Shares; (iii) all 
expenses in connection with the qualification of the Shares for offering and 
sale under state securities laws as provided in Section 5(b) hereof, 
including the fees and disbursements of counsel for the Underwriters in 
connection with such qualification and in connection with the Blue Sky 
survey; (iv) all fees and expenses in connection with listing the Shares on 
the New York Stock Exchange; (v) the filing fees incident to securing any 


                                       9

<PAGE>

required review by the National Association of Securities Dealers, Inc. of 
the terms of the sale of the Shares; (vi) the cost of preparing stock 
certificates; (vii) the cost and charges of any transfer agent or registrar; 
and (viii) all other costs and expenses incident to the performance of its 
obligations hereunder which are not otherwise specifically provided for in 
this Section.  It is understood, however, that, except as provided in this 
Section, and Sections 8 and 11 hereof, the Underwriters will pay all of their 
own costs and expenses, including the fees of their counsel, stock transfer 
taxes on resale of any of the Shares by them, and any advertising expenses 
connected with any offers they may make.

     7.   The obligations of the Underwriters hereunder, as to the Shares to 
be delivered at each Time of Delivery, shall be subject, in their discretion, 
to the condition that all representations and warranties and other statements 
of the Company herein are, at and as of such Time of Delivery, true and 
correct, the condition that the Company shall have performed all of its 
obligations hereunder theretofore to be performed, and the following 
additional conditions:

          (a)  The Prospectus shall have been filed with the Commission pursuant
     to Rule 424(b) within the applicable time period prescribed for such filing
     by the rules and regulations under the Act and in accordance with Section
     5(a) hereof; if the Company has elected to rely upon Rule 462(b), the Rule
     462(b) Registration Statement shall have become effective by 10:00 P.M.,
     Washington, D.C. time, on the date of this Agreement; no stop order
     suspending the effectiveness of the Registration Statement or any part
     thereof shall have been issued and no proceeding for that purpose shall
     have been initiated or threatened by the Commission; and all requests for
     additional information on the part of the Commission shall have been
     complied with to your reasonable satisfaction;

          (b)  Sullivan & Cromwell, counsel for the Underwriters, shall have
     furnished to you such written opinion or opinions in the form attached as
     Annex II(a) hereto, dated such Time of Delivery, and such counsel shall
     have received such papers and information as they may reasonably request to
     enable them to pass upon such matters;

          (c)  Skadden, Arps, Slate, Meagher & Flom LLP, counsel for the
     Company, shall have furnished to you their written opinion, in the form
     attached as Annex II(b) hereto, dated such Time of Delivery, in form and
     substance satisfactory to you;

          (d)  Joel Marcus, Chief Executive Officer of the Company, shall have
     furnished to you his written opinion, in the form attached as Annex II(c)
     hereto, dated such Time of Delivery, in form and substance satisfactory to
     you;

          (e)  Ballard, Spahr, Andrews & Ingersoll, LLP, special Maryland
     counsel for the Company, shall have furnished to you their written opinion,
     in the form attached as Annex II(d) hereto, dated such Time of Delivery, in
     form and substance satisfactory to you;

          (f)  On the date of the Prospectus at a time prior to the execution of
     this Agreement, at 9:30 a.m., New York City time, on the effective date of
     any post-effective amendment to the Registration Statement filed subsequent
     to the date of this Agreement and also at such Time of Delivery, Ernst &
     Young LLP shall have furnished to you a letter or letters, dated the
     respective dates of delivery thereof, in form and substance satisfactory to
     you, to the effect set forth in Annex I hereto (the executed copy of the
     letter delivered prior to the execution of this Agreement is attached as
     Annex I(a) hereto and a draft of the form 


                                      10

<PAGE>

     of letter to be delivered on the effective date of any post-effective 
     amendment to the Registration Statement and as of each Time of Delivery 
     is attached as Annex I(b) hereto);

          (g)  (i) Neither the Company nor any of its subsidiaries shall have
     sustained since the date of the latest audited financial statements
     included or incorporated by reference in the Prospectus any significant
     loss or interference with its business from fire, explosion, flood or other
     calamity, whether or not covered by insurance, or from any labor dispute or
     court or governmental action, order or decree, otherwise than as set forth
     or contemplated in the Prospectus, and (ii) since the respective dates as
     of which information is given in the Prospectus there shall not have been
     any change in the capital stock or long-term debt of the Company or any of
     its Subsidiaries or any change, or any development involving a prospective
     change, in or affecting the general affairs, management, financial
     position, stockholders' equity or results of operations of the Company and
     its subsidiaries taken as a whole, in any such case, otherwise than as set
     forth or contemplated in the Prospectus, the effect of which, in any such
     case described in clause (i) or (ii), is in the judgment of the
     Representatives so material and adverse as to make it impracticable or
     inadvisable to proceed with the public offering or the delivery of the
     Shares being delivered at such Time of Delivery on the terms and in the
     manner contemplated in the Prospectus;

          (h)  On or after the date hereof there shall not have occurred any of
     the following: (i) a suspension or material limitation in trading in
     securities generally on the New York Stock Exchange; (ii) a suspension or
     material limitation in trading in the Company's securities on the New York
     Stock Exchange; (iii) a general moratorium on commercial banking activities
     declared by either Federal or New York State authorities; or (iv) the
     outbreak or escalation of hostilities involving the United States or the
     declaration by the United States of a national emergency or war, if the
     effect of any such event specified in this Clause (iv) in the judgment of
     the Representatives makes it impracticable or inadvisable to proceed with
     the public offering or the delivery of the Shares being delivered at such
     Time of Delivery on the terms and in the manner contemplated in the
     Prospectus;

          (i)  The Shares to be sold at such Time of Delivery shall have been
     duly listed, subject to notice of issuance, on the New York Stock Exchange;

          (j)  The Company has obtained and delivered to the Underwriters
     executed copies of an agreement from the directors and executive officers
     of the Company set forth on Schedule II hereto, substantially to the effect
     set forth in Subsection 5(e) hereof in form and substance satisfactory to
     you;

          (k)  The Company shall have complied with the provisions of Section
     5(c) hereof with respect to the furnishing of prospectuses; and

          (l)  The Company shall have furnished or caused to be furnished to you
     at such Time of Delivery certificates of officers of the Company reasonably
     satisfactory to you as to the accuracy of the representations and
     warranties of the Company herein at and as of such Time of Delivery, as to
     the performance by the Company of all of its obligations hereunder to be
     performed at or prior to such Time of Delivery, as to the matters set forth
     in subsections (a) and (g) of this Section and as to such other matters as
     you may reasonably request.


                                      11

<PAGE>

     8.   (a)  The Company will indemnify and hold harmless each Underwriter 
against any losses, claims, damages or liabilities, joint or several, to 
which such Underwriter may become subject, under the Act or otherwise, 
insofar as such losses, claims, damages or liabilities (or actions in respect 
thereof) arise out of or are based upon an untrue statement or alleged untrue 
statement of a material fact contained in any Preliminary Prospectus, the 
Registration Statement or the Prospectus, or any amendment or supplement 
thereto, or arise out of or are based upon the omission or alleged omission 
to state therein a material fact required to be stated therein or necessary 
to make the statements therein not misleading, and will reimburse each 
Underwriter for any legal or other expenses reasonably incurred by such 
Underwriter in connection with investigating or defending any such action or 
claim as such expenses are incurred; PROVIDED, HOWEVER, that the Company 
shall not be liable in any such case to the extent that any such loss, claim, 
damage or liability arises out of or is based upon an untrue statement or 
alleged untrue statement or omission or alleged omission made in any 
Preliminary Prospectus, the Registration Statement or the Prospectus or any 
such amendment or supplement in reliance upon and in conformity with written 
information furnished to the Company by any Underwriter through Goldman, 
Sachs & Co. expressly for use therein.

     (b)  Each Underwriter will indemnify and hold harmless the Company 
against any losses, claims, damages or liabilities to which the Company may 
become subject, under the Act or otherwise, insofar as such losses, claims, 
damages or liabilities (or actions in respect thereof) arise out of or are 
based upon an untrue statement or alleged untrue statement of a material fact 
contained in any Preliminary Prospectus, the Registration Statement or the 
Prospectus, or any amendment or supplement thereto, or arise out of or are 
based upon the omission or alleged omission to state therein a material fact 
required to be stated therein or necessary to make the statements therein not 
misleading, in each case to the extent, but only to the extent, that such 
untrue statement or alleged untrue statement or omission or alleged omission 
was made in any Preliminary Prospectus, the Registration Statement or the 
Prospectus or any such amendment or supplement in reliance upon and in 
conformity with written information furnished to the Company by such 
Underwriter through Goldman, Sachs & Co. expressly for use therein; and will 
reimburse the Company for any legal or other expenses reasonably incurred by 
the Company in connection with investigating or defending any such action or 
claim as such expenses are incurred.

     (c)  Promptly after receipt by an indemnified party under subsection (a) 
or (b) above of notice of the commencement of any action, such indemnified 
party shall, if a claim in respect thereof is to be made against the 
indemnifying party under such subsection, notify the indemnifying party in 
writing of the commencement thereof; but the omission so to notify the 
indemnifying party shall not relieve it from any liability which it may have 
to any indemnified party otherwise than under such subsection.  In case any 
such action shall be brought against any indemnified party and it shall 
notify the indemnifying party of the commencement thereof, the indemnifying 
party shall be entitled to participate therein and, to the extent that it 
shall wish, jointly with any other indemnifying party similarly notified, to 
assume the defense thereof, with counsel satisfactory to such indemnified 
party (who shall not, except with the consent of the indemnified party, be 
counsel to the indemnifying party), and, after notice from the indemnifying 
party to such indemnified party of its election so to assume the defense 
thereof, the indemnifying party shall not be liable to such indemnified party 
under such subsection for any legal expenses of other counsel or any other 
expenses, in each case subsequently incurred by such indemnified party, in 
connection with the defense thereof other than reasonable costs of 
investigation.  No indemnifying party shall, without the written consent of 
the indemnified party, effect the settlement or compromise of, or consent to 
the entry of any judgment with respect to, any pending or threatened action 
or claim in respect of which indemnification or 


                                      12

<PAGE>

contribution may be sought hereunder (whether or not the indemnified party is 
an actual or potential party to such action or claim) unless such settlement, 
compromise or judgment (i) includes an unconditional release of the 
indemnified party from all liability arising out of such action or claim and 
(ii) does not include a statement as to or an admission of fault, culpability 
or a failure to act, by or on behalf of any indemnified party.

     (d)  If the indemnification provided for in this Section 8 is 
unavailable to or insufficient to hold harmless an indemnified party under 
subsection (a) or (b) above in respect of any losses, claims, damages or 
liabilities (or actions in respect thereof) referred to therein, then each 
indemnifying party shall contribute to the amount paid or payable by such 
indemnified party as a result of such losses, claims, damages or liabilities 
(or actions in respect thereof) in such proportion as is appropriate to 
reflect the relative benefits received by the Company on the one hand and the 
Underwriters on the other from the offering of the Shares.  If, however, the 
allocation provided by the immediately preceding sentence is not permitted by 
applicable law or if the indemnified party failed to give the notice required 
under subsection (c) above, then each indemnifying party shall contribute to 
such amount paid or payable by such indemnified party in such proportion as 
is appropriate to reflect not only such relative benefits but also the 
relative fault of the Company on the one hand and the Underwriters on the 
other in connection with the statements or omissions which resulted in such 
losses, claims, damages or liabilities (or actions in respect thereof), as 
well as any other relevant equitable considerations.  The relative benefits 
received by the Company on the one hand and the Underwriters on the other 
shall be deemed to be in the same proportion as the total net proceeds from 
the offering (before deducting expenses) received by the Company bear to the 
total underwriting discounts and commissions received by the Underwriters, in 
each case as set forth in the table on the cover page of the Prospectus.  The 
relative fault shall be determined by reference to, among other things, 
whether the untrue or alleged untrue statement of a material fact or the 
omission or alleged omission to state a material fact relates to information 
supplied by the Company on the one hand or the Underwriters on the other and 
the parties' relative intent, knowledge, access to information and 
opportunity to correct or prevent such statement or omission.  The Company 
and the Underwriters agree that it would not be just and equitable if 
contributions pursuant to this subsection (d) were determined by PRO RATA 
allocation (even if the Underwriters were treated as one entity for such 
purpose) or by any other method of allocation which does not take account of 
the equitable considerations referred to above in this subsection (d).  The 
amount paid or payable by an indemnified party as a result of the losses, 
claims, damages or liabilities (or actions in respect thereof) referred to 
above in this subsection (d) shall be deemed to include any legal or other 
expenses reasonably incurred by such indemnified party in connection with 
investigating or defending any such action or claim. Notwithstanding the 
provisions of this subsection (d), no Underwriter shall be required to 
contribute any amount in excess of the amount by which the total price at 
which the Shares underwritten by it and distributed to the public were 
offered to the public exceeds the amount of any damages which such 
Underwriter has otherwise been required to pay by reason of such untrue or 
alleged untrue statement or omission or alleged omission.  No person guilty 
of fraudulent misrepresentation (within the meaning of Section 11(f) of the 
Act) shall be entitled to contribution from any person who was not guilty of 
such fraudulent misrepresentation.  The Underwriters' obligations in this 
subsection (d) to contribute are several in proportion to their respective 
underwriting obligations and not joint.

     (e)  The obligations of the Company under this Section 8 shall be in 
addition to any liability which the Company may otherwise have and shall 
extend, upon the same terms and conditions, to each person, if any, who 
controls any Underwriter within the meaning of the Act; and the obligations 
of the Underwriters under this Section 8 shall be in addition to any 
liability which the 


                                      13

<PAGE>

respective Underwriters may otherwise have and shall extend, upon the same 
terms and conditions, to each officer and director of the Company (including 
any person who, with his or her consent, is named in the Registration 
Statement as about to become a director of the Company) and to each person, 
if any, who controls the Company within the meaning of the Act.

     9.   (a)  If any Underwriter shall default in its obligation to purchase 
the Shares which it has agreed to purchase hereunder at a Time of Delivery, 
you may in your discretion arrange for you or another party or other parties 
to purchase such Shares on the terms contained herein.  If within thirty-six 
hours after such default by any Underwriter you do not arrange for the 
purchase of such Shares, then the Company shall be entitled to a further 
period of thirty-six hours within which to procure another party or other 
parties satisfactory to you to purchase such Shares on such terms.  In the 
event that, within the respective prescribed periods, you notify the Company 
that you have so arranged for the purchase of such Shares, or the Company 
notifies you that it has so arranged for the purchase of such Shares, you or 
the Company shall have the right to postpone such Time of Delivery for a 
period of not more than seven days, in order to effect whatever changes may 
thereby be made necessary in the Registration Statement or the Prospectus, or 
in any other documents or arrangements, and the Company agrees to file 
promptly any amendments to the Registration Statement or the Prospectus which 
in your opinion may thereby be made necessary. The term "Underwriter" as used 
in this Agreement shall include any person substituted under this Section 
with like effect as if such person had originally been a party to this 
Agreement with respect to such Shares.

     (b)  If, after giving effect to any arrangements for the purchase of the 
Shares of a defaulting Underwriter or Underwriters by you and the Company as 
provided in subsection (a) above, the aggregate number of such Shares which 
remains unpurchased does not exceed one-eleventh of the aggregate number of 
all the Shares to be purchased at such Time of Delivery, then the Company 
shall have the right to require each non-defaulting Underwriter to purchase 
the number of shares which such Underwriter agreed to purchase hereunder at 
such Time of Delivery and, in addition, to require each non-defaulting 
Underwriter to purchase its pro rata share (based on the number of Shares 
which such Underwriter agreed to purchase hereunder) of the Shares of such 
defaulting Underwriter or Underwriters for which such arrangements have not 
been made; but nothing herein shall relieve a defaulting Underwriter from 
liability for its default.

     (c)  If, after giving effect to any arrangements for the purchase of the 
Shares of a defaulting Underwriter or Underwriters by you and the Company as 
provided in subsection (a) above, the aggregate number of such Shares which 
remains unpurchased exceeds one-eleventh of the aggregate number of all the 
Shares to be purchased at such Time of Delivery, or if the Company shall not 
exercise the right described in subsection (b) above to require 
non-defaulting Underwriters to purchase Shares of a defaulting Underwriter or 
Underwriters, then this Agreement (or, with respect to the Second Time of 
Delivery, the obligations of the Underwriters to purchase and of the Company 
to sell the Optional Shares) shall thereupon terminate, without liability on 
the part of any non-defaulting Underwriter or the Company, except for the 
expenses to be borne by the Company and the Underwriters as provided in 
Section 6 hereof and the indemnity and contribution agreements in Section 8 
hereof; but nothing herein shall relieve a defaulting Underwriter from 
liability for its default.

     10.  The respective indemnities, agreements, representations, warranties 
and other statements of the Company and the several Underwriters, as set 
forth in this Agreement or made by or on behalf of them, respectively, 
pursuant to this Agreement, shall remain in full force and 


                                      14

<PAGE>

effect, regardless of any investigation (or any statement as to the results 
thereof) made by or on behalf of any Underwriter or any controlling person of 
any Underwriter, or the Company, or any officer or director or controlling 
person of the Company, and shall survive delivery of and payment for the 
Shares.

     11.  If this Agreement shall be terminated pursuant to Section 9 hereof, 
the Company shall not then be under any liability to any Underwriter except 
as provided in Sections 6 and 8 hereof; but, if for any other reason, any 
Shares are not delivered by or on behalf of the Company as provided herein, 
the Company will reimburse the Underwriters through you for all out-of-pocket 
expenses approved in writing by you, including fees and disbursements of 
counsel, reasonably incurred by the Underwriters in making preparations for 
the purchase, sale and delivery of the Shares not so delivered, but the 
Company shall then be under no further liability to any Underwriter except as 
provided in Sections 6 and 8 hereof.

     12.  In all dealings hereunder, you shall act on behalf of each of the 
Underwriters, and the parties hereto shall be entitled to act and rely upon 
any statement, request, notice or agreement on behalf of any Underwriter made 
or given by you.

     All statements, requests, notices and agreements hereunder shall be in 
writing, and if to the Underwriters shall be delivered or sent by mail, telex 
or facsimile transmission to you as the representatives at 32 Old Slip, 9th 
Floor, New York, New York  10005, Attention: Registration Department; and if 
to the Company shall be delivered or sent by mail to the address of the 
Company set forth in the Registration Statement, Attention: Secretary; 
provided, however, that any notice to an Underwriter pursuant to Section 8(c) 
hereof shall be delivered or sent by mail, telex or facsimile transmission to 
such Underwriter at its address set forth in its Underwriters' Questionnaire, 
or telex constituting such Questionnaire, which address will be supplied to 
the Company by you upon request.  Any such statements, requests, notices or 
agreements shall take effect upon receipt thereof.

     13.  This Agreement shall be binding upon, and inure solely to the 
benefit of, the Underwriters, the Company and, to the extent provided in 
Sections 8 and 10 hereof, the officers and directors of the Company and each 
person who controls the Company or any Underwriter, and their respective 
heirs, executors, administrators, successors and assigns, and no other person 
shall acquire or have any right under or by virtue of this Agreement. No 
purchaser of any of the Shares from any Underwriter shall be deemed a 
successor or assign by reason merely of such purchase.

     14.  Time shall be of the essence of this Agreement.  As used herein, 
the term "business day" shall mean any day when the Commission's office in 
Washington, D.C.  is open for business.

     15.  This Agreement shall be governed by and construed in accordance 
with the laws of the State of New York.

     16.  This Agreement may be executed by any one or more of the parties 
hereto in any number of counterparts, each of which shall be deemed to be an 
original, but all such counterparts shall together constitute one and the 
same instrument.

     If the foregoing is in accordance with your understanding, please sign 
and return to us four counterparts hereof, and upon the acceptance hereof by 
you, on behalf of each of the Underwriters, this letter and such acceptance 
hereof shall constitute a binding agreement between each of the 


                                      15

<PAGE>

Underwriters and the Company. It is understood that your acceptance of this 
letter on behalf of each of the Underwriters is pursuant to the authority set 
forth in a form of Agreement among Underwriters, the form of which shall be 
submitted to the Company for examination upon request, but without warranty 
on your part as to the authority of the signers thereof.

                                       Very truly yours,

                                       Alexandria Real Estate Equities, Inc.


                                       By:
                                          ------------------------------------
                                             Name:
                                             Title:

Accepted as of the date hereof:


- ----------------------------------
     (Goldman, Sachs & Co.)


On behalf of each of the Underwriters


                                      16

<PAGE>

                                  SCHEDULE I

<TABLE>
<CAPTION>
                                                               NUMBER OF
                                                                OPTIONAL
                                                              SHARES TO BE
                                           TOTAL NUMBER OF    PURCHASED IF
                                             FIRM SHARES     MAXIMUM OPTION
                 UNDERWRITER               TO BE PURCHASED     EXERCISED
                 -----------               ---------------   --------------
    <S>                                    <C>               <C>
    Goldman, Sachs & Co.  . . . . . . .       1,000,000         150,000
                                           ---------------   --------------
                   Total  . . . . . . .       1,000,000         150,000
                                           ---------------   --------------
                                           ---------------   --------------
</TABLE>


                                      17

<PAGE>

                                  SCHEDULE II


Joel Marcus
James Richardson
Peter Nelson
Lynn Shapiro
Steven Stone
Vincent Ciruzzi
Jerry Sudarsky
Joseph Elmaleh
Viren Mehta
David Petrone
Anthony Solomon
Richard Jennings
Alan Walton


                                      18

<PAGE>

                                                                      ANNEX I


Pursuant to Section 7(d) of the Underwriting Agreement, the accountants shall 
furnish letters to the Underwriters to the effect that:

          (i)    They are independent certified public accountants with respect
     to the Company and its subsidiaries within the meaning of the Act and the
     applicable published rules and regulations thereunder;

          (ii)   In their opinion, the financial statements and any
     supplementary financial information and schedules (and, if applicable,
     financial forecasts and/or pro forma financial information) examined by
     them and included or incorporated by reference in the Registration
     Statement or the Prospectus comply as to form in all material respects with
     the applicable accounting requirements of the Act or the Exchange Act, as
     applicable, and the related published rules and regulations thereunder;
     and, if applicable, they have made a review in accordance with standards
     established by the American Institute of Certified Public Accountants of
     the consolidated interim financial statements, selected financial data, pro
     forma financial information, financial forecasts and/or condensed financial
     statements derived from audited financial statements of the Company for the
     periods specified in such letter, as indicated in their reports thereon,
     copies of which have been separately furnished to the representatives of
     the Underwriters (the "Representatives") and are attached hereto;

          (iii)  They have made a review in accordance with standards
     established by the American Institute of Certified Public Accountants of
     the unaudited condensed consolidated statements of income, consolidated
     balance sheets and consolidated statements of cash flows included in the
     Prospectus and/or included in the Company's quarterly report on Form 10-Q
     incorporated by reference into the Prospectus as indicated in their reports
     thereon copies of which have been separately furnished to the
     Representatives are attached hereto; and on the basis of specified
     procedures including inquiries of officials of the Company who have
     responsibility for financial and accounting matters regarding whether the
     unaudited condensed consolidated financial statements referred to in
     paragraph (vi)(A)(i) below comply as to form in the related in all material
     respects with the applicable accounting requirements of the Act and the
     Exchange Act and the related published rules and regulations, nothing came
     to their attention that caused them to believe that the unaudited condensed
     consolidated financial statements do not comply as to form in all material
     respects with the applicable accounting requirements of the Act and the
     Exchange Act and the related published rules and regulations;

          (iv)   The unaudited selected financial information with respect to
     the consolidated results of operations and financial position of the
     Company for the five most recent fiscal years included in the Prospectus
     and included or incorporated by reference in Item 6 of the Company's Annual
     Report on Form 10-K for the most recent fiscal year agrees with the
     corresponding amounts (after restatement where applicable) in the audited
     consolidated financial statements for such five fiscal years which were
     included or incorporated by reference in the Company's Annual Reports on
     Form 10-K for such fiscal years;

<PAGE>

          (v)    They have compared the information in the Prospectus under
     selected captions with the disclosure requirements of Regulation S-K and on
     the basis of limited procedures specified in such letter nothing came to
     their attention as a result of the foregoing procedures that caused them to
     believe that this information does not conform in all material respects
     with the disclosure requirements of Items 301, 302, 402 and 503(d),
     respectively, of Regulation S-K;

          (vi)   On the basis of limited procedures, not constituting an
     examination in accordance with generally accepted auditing standards,
     consisting of a reading of the unaudited financial statements and other
     information referred to below, a reading of the latest available interim
     financial statements of the Company and its subsidiaries, inspection of the
     minute books of the Company and its subsidiaries since the date of the
     latest audited financial statements included or incorporated by reference
     in the Prospectus, inquiries of officials of the Company and its
     subsidiaries responsible for financial and accounting matters and such
     other inquiries and procedures as may be specified in such letter, nothing
     came to their attention that caused them to believe that:

                 (A)     (i)  the unaudited condensed consolidated statements of
          income, consolidated balance sheets and consolidated statements of
          cash flows included in the Prospectus and/or included or incorporated
          by reference in the Company's Quarterly Reports on Form 10-Q
          incorporated by reference in the Prospectus do not comply as to form
          in all material respects with the applicable accounting requirements
          of the Exchange Act and the related published rules and regulations,
          or (ii) any material modifications should be made to the unaudited
          condensed consolidated statements of income, consolidated balance
          sheets and consolidated statements of cash flows included in the
          Prospectus or included in the Company's Quarterly Reports on Form 10-Q
          incorporated by reference in the Prospectus, for them to be in
          conformity with generally accepted accounting principles;

                 (B)     any other unaudited income statement data and balance
          sheet items included in the Prospectus do not agree with the
          corresponding items in the unaudited consolidated financial statements
          from which such data and items were derived, and any such unaudited
          data and items were not determined on a basis substantially consistent
          with the basis for the corresponding amounts in the audited
          consolidated financial statements included or incorporated by
          reference in the Company's Annual Report on Form 10-K for the most
          recent fiscal year;

                 (C)     the unaudited financial statements which were not
          included in the Prospectus but from which were derived the unaudited
          condensed financial statements referred to in Clause (A) and any
          unaudited income statement data and balance sheet items included in
          the Prospectus and referred to in Clause (B) were not determined on a
          basis substantially consistent with the basis for the audited
          financial statements included or incorporated by reference in the
          Company's Annual Report on Form 10-K for the most recent fiscal year;

                 (D)     any unaudited pro forma consolidated condensed
          financial statements included or incorporated by reference in the
          Prospectus do not comply as to form in all material respects with the
          applicable accounting requirements of the Act and the published rules
          and regulations thereunder or the pro forma adjustments 


                                       2

<PAGE>

          have not been properly applied to the historical amounts in the 
          compilation of those statements;

                 (E)     as of a specified date not more than five days prior to
          the date of such letter, there have been any changes in the
          consolidated capital stock (other than issuances of capital stock upon
          exercise of options and stock appreciation rights, upon earn-outs of
          performance shares and upon conversions of convertible securities, in
          each case which were outstanding on the date of the latest balance
          sheet included or incorporated by reference in the Prospectus) or any
          increase in the consolidated long-term debt of the Company and its
          subsidiaries, or any decreases in consolidated net current assets or
          stockholders' equity or other items specified by the Representatives,
          or any increases in any items specified by the Representatives, in
          each case as compared with amounts shown in the latest balance sheet
          included or incorporated by reference in the Prospectus, except in
          each case for changes, increases or decreases which the Prospectus
          discloses have occurred or may occur or which are described in such
          letter; and

                 (F)     for the period from the date of the latest financial
          statements included or incorporated by reference in the Prospectus to
          the specified date referred to in Clause (E) there were any decreases
          in consolidated net revenues or operating profit or the total or per
          share amounts of consolidated net income or other items specified by
          the Representatives, or any increases in any items specified by the
          Representatives, in each case as compared with the comparable period
          of the preceding year and with any other period of corresponding
          length specified by the Representatives, except in each case for
          increases or decreases which the Prospectus discloses have occurred or
          may occur or which are described in such letter; and

          (vii)  In addition to the examination referred to in their report(s)
     included or incorporated by reference in the Prospectus and the limited
     procedures, inspection of minute books, inquiries and other procedures
     referred to in paragraphs (iii) and (vi) above, they have carried out
     certain specified procedures, not constituting an examination in accordance
     with generally accepted auditing standards, with respect to certain
     amounts, percentages and financial information specified by the
     Representatives which are derived from the general accounting records of
     the Company and its subsidiaries, which appear in the Prospectus (excluding
     documents incorporated by reference) or in Part II of, or in exhibits and
     schedules to, the Registration Statement specified by the Representatives
     or in documents incorporated by reference in the Prospectus specified by
     the Representatives, and have compared certain of such amounts, percentages
     and financial information with the accounting records of the Company and
     its subsidiaries and have found them to be in agreement.


                                       3

<PAGE>

                                                                       EXHIBIT A

                             SUBSIDIARIES OF THE COMPANY
<TABLE>
<CAPTION>

Subsidiary                               Jurisdiction of Organization
- ----------                               ----------------------------
<S>                                      <C>
ARE-QRS Corp.                                     Maryland
ARE-Western Newbrook, LLC                         Delaware
Alexandria Real Estate Equities, L.P.             Delaware
AREE-Holdings II, L.P.                            Delaware
ARE-GP/II Holdings QRS Corp.                      Delaware
</TABLE>


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