INTEGRATED ELECTRICAL SERVICES INC
POS AM, 1999-02-05
ELECTRICAL WORK
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<PAGE>   1
 
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 5, 1999.
 
                                                      REGISTRATION NO. 333-50031
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ---------------------
 
                                 POST-EFFECTIVE
                                AMENDMENT NO. 2
                                  TO FORM S-1
                                       ON
                                    FORM S-4
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                             ---------------------
 
                      INTEGRATED ELECTRICAL SERVICES, INC.
             (Exact name of Registrant as specified in its charter)
 
<TABLE>
<S>                                            <C>
                   DELAWARE                                      76-0542208
         (State or other jurisdiction                         (I.R.S. Employer
      of incorporation or organization)                    Identification Number)
</TABLE>
 
                       515 POST OAK BOULEVARD, SUITE 450
                           HOUSTON, TEXAS 77027-9408
                                 (713) 860-1500
              (Address, including zip code, and telephone number,
       including area code, of registrant's principal executive offices)
                             ---------------------
 
                                JOHN F. WOMBWELL
              SENIOR VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                       515 POST OAK BOULEVARD, SUITE 450
                           HOUSTON, TEXAS 77027-9408
                                 (713) 860-1500
               (Name, address, including zip code, and telephone
               number, including area code, of agent for service)
                             ---------------------
 
                                    copy to:
                                DAVID P. OELMAN
                             ANDREWS & KURTH L.L.P.
                             600 TRAVIS, SUITE 4200
                              HOUSTON, TEXAS 77002
                                 (713) 220-4200
 
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the Registration Statement becomes effective.
                             ---------------------
 
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to rule 415 under the Securities Act of
1933, check the following box.  [X]
 
     If any of the securities being registered on this Form are to be offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box.  [ ]
 
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering.  [ ]
 
     If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
                             ---------------------
 
     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
 
     THIS REGISTRATION STATEMENT CONTAINS A COMBINED PROSPECTUS PURSUANT TO RULE
429 UNDER THE SECURITIES ACT, WHICH RELATES TO THE COMPANY'S EARLIER
REGISTRATION STATEMENT NO. 333-45479.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                EXPLANATORY NOTE
 
     This Registration Statement contains two forms of prospectus: one (the
"Acquisition Prospectus") to be used in connection with the acquisition of the
assets or the securities of businesses by Integrated Electrical Services, Inc.
and one (the "Selling Stockholder Prospectus") to be used by persons or entities
who have received stock of Integrated Electrical Services, Inc. in exchange for
the assets or the securities of a business and who wish to sell such stock. The
Acquisition Prospectus and the Selling Stockholder Prospectus are identical
except that they contain different front cover pages and different descriptions
of the plan of distribution. The form of Acquisition Prospectus is included
herein and is followed by those pages to be used in the Selling Stockholder
Prospectus which differ from those used in the Acquisition Prospectus. Each of
the pages for the Selling Stockholder Prospectus included herein is labeled
"Alternate Page for Selling Stockholder Prospectus."
<PAGE>   3
 
The information in this prospectus is not complete and may be changed. We may
not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and is not soliciting an offer to buy these securities
in any state where the offer or sale is not permitted.
 
                SUBJECT TO COMPLETION, DATED FEBRUARY   , 1999.
 
PROSPECTUS
 
                     [INTEGRATED ELECTRICAL SERVICES LOGO]
 
                               21,000,000 SHARES
                                  COMMON STOCK
 
                             ---------------------
 
THE COMPANY:
 
- - Our company is the third largest provider of electrical contracting and
  maintenance services in the United States.
 
- - Our address is:
  Integrated Electrical Services, Inc.
  515 Post Oak Boulevard
  Suite 450
  Houston, Texas 77027-9408
  (713) 860-1500
 
THE OFFERING:
 
- - 21,000,000 shares of common stock.
 
- - All of the common stock we are offering by way of this prospectus will be
  offered, from time to time, to acquire the securities or assets of other
  businesses.
 
- - Our common stock trades under the symbol "IEE." The last reported sale price
  of the common stock on February 3, 1999 was $19 7/16.
 
      THIS INVESTMENT INVOLVES RISK. SEE "RISK FACTORS" BEGINNING ON PAGE 5.
 
                             ---------------------
 
NEITHER THE SEC NOR ANY STATE SECURITIES COMMISSION HAS DETERMINED WHETHER THIS
PROSPECTUS IS TRUTHFUL OR COMPLETE. NOR HAVE THEY MADE, NOR WILL THEY MAKE, ANY
      DETERMINATION AS TO WHETHER ANYONE SHOULD BUY THESE SECURITIES. ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>   4
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                               PAGE
                                                               ----
<S>                                                            <C>
Where You Can Find More Information.........................     2
The Company.................................................     4
Risk Factors................................................     5
Securities Covered by this Prospectus.......................     8
Legal Matters...............................................     9
Experts.....................................................     9
</TABLE>
 
                             ---------------------
 
                           FORWARD-LOOKING STATEMENTS
 
     This prospectus includes forward-looking statements. We have based these
forward-looking statements on our current expectations and projections about
future events. These forward-looking statements are subject to risks,
uncertainties and assumptions about us, including, among other things:
 
     - our anticipated growth strategies;
 
     - our expected internal growth;
 
     - anticipated trends and conditions in our industry;
 
     - our ability to integrate acquired businesses;
 
     - our ability to implement a Year 2000 readiness program;
 
     - our future capital needs; and
 
     - our ability to compete.
 
     We undertake no obligation to publicly update or revise any forward-looking
statements, whether as a result of new information, future events or otherwise.
In light of these risks, uncertainties and assumptions, the forward-looking
events discussed in this prospectus might not occur.
 
                             ---------------------
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
     We file annual, quarterly and special reports, proxy statements and other
information with the Securities and Exchange Commission (the "SEC"). You may
read and copy any reports, statements or other information we file at the SEC's
public reference rooms in Washington, D.C., New York, New York and Chicago,
Illinois. Please call the SEC at 1-800-SEC-0330 for further information on the
public reference rooms. Our SEC filings are also available to the public from
commercial document retrieval services and at the Internet world wide web site
maintained by the SEC at www.sec.gov.
 
     We filed a Registration Statement on Form S-4 to register with the SEC the
common stock to be issued (the "Registration Statement"). This prospectus is a
part of that Registration Statement.
 
     As allowed by SEC rules, this prospectus does not contain all the
information you can find in the Registration Statement or the exhibits to the
Registration Statement.
 
     The SEC allows us to "incorporate by reference" information into this
prospectus, which means that we can disclose important information to you by
referring you to another document filed separately with the SEC. The information
incorporated by reference is deemed to be part of this prospectus, except for
any information superseded by information contained directly in this prospectus.
This prospectus
 
                                        2
<PAGE>   5
 
incorporates by reference the documents set forth below that we have previously
filed with the SEC. These documents contain important information about our
company and its financial condition.
 
<TABLE>
<CAPTION>
SEC FILINGS (FILE NO. 1-13783)          PERIOD
- ------------------------------          ------
<S>                                     <C>
Annual Report on Form 10-K              Year ended September 30, 1998 (as amended on
                                        January 22, 1999)
Current Report on Form 8-K              Filed on February 4, 1999
Proxy Statement                         Dated December 29, 1998
Registration Statement on Form 8-A      Filed on January 14, 1998
</TABLE>
 
     We also incorporate by reference into this prospectus additional documents
that may be filed with the SEC from the date of this prospectus to the date of
the termination of the offerings of common stock by way of this prospectus.
These include periodic reports, such as Annual Reports on Form 10-K, Quarterly
Reports on Form 10-Q and Current Reports on Forms 8-K, as well as proxy
statements.
 
     Documents incorporated by reference are available from us without charge,
excluding all exhibits unless we have specifically incorporated by reference an
exhibit in this prospectus. You may obtain documents incorporated by reference
in this prospectus by requesting them in writing or by telephone from us at the
following address:
 
           Integrated Electrical Services, Inc.
           515 Post Oak Boulevard
           Suite 450
           Houston, Texas 77027-9408
           Attention: Corporate Secretary
           (713) 860-1500
 
     YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED OR INCORPORATED BY
REFERENCE IN THIS PROSPECTUS. WE HAVE NOT AUTHORIZED ANYONE TO PROVIDE YOU WITH
INFORMATION THAT IS DIFFERENT FROM WHAT IS CONTAINED IN THIS PROSPECTUS. THIS
PROSPECTUS IS DATED                , 1999. YOU SHOULD NOT ASSUME THAT THE
INFORMATION CONTAINED IN THE PROSPECTUS IS ACCURATE AS OF ANY DATE OTHER THAN
THAT DATE. ANY INFORMATION IN THIS PROSPECTUS OR IN A DOCUMENT INCORPORATED BY
REFERENCE IN THIS PROSPECTUS SHALL BE DEEMED TO BE MODIFIED OR SUPERSEDED FOR
PURPOSES OF THIS PROSPECTUS TO THE EXTENT THAT A STATEMENT CONTAINED IN THIS
PROSPECTUS OR IN ANY SUBSEQUENTLY FILED DOCUMENT WHICH ALSO IS INCORPORATED BY
REFERENCE CHANGES SUCH STATEMENT.
 
                                        3
<PAGE>   6
 
                                  THE COMPANY
 
     In late 1997, we recognized a significant opportunity for a
well-capitalized company with critical mass and a nationwide presence to realize
substantial competitive advantages by capitalizing on the fragmented nature of
the electrical services industry. To that end, we began operations on January
30, 1998 with the acquisition of 16 electrical businesses, each of which had a
strong identity and presence in its local markets, in order to create a
nationwide provider of electrical services and to lead the consolidation of our
industry.
 
     According to U.S. Census data, the electrical contracting industry
generated annual revenues in excess of $40 billion in 1992. This data also
indicates that the electrical contracting industry is highly fragmented with
more than 54,000 companies, most of which are small, owner-operated businesses.
Government sources indicate that total construction industry revenues have grown
at an average compound rate of approximately 6% from 1995 through 1998. Over the
same period, our pro forma combined revenues increased at a compound annual rate
of approximately 13%. We believe this growth in revenues is primarily due to the
fact that our companies have been in business an average of 21 years, have
strong relationships with customers, have effectively employed industry best
practices and have focused on larger, higher margin projects.
 
     We serve a broad range of markets, including the commercial, industrial,
residential and power line markets. In addition, we have recently entered into
the data communication market, which includes the installation of wiring for
computer networks and fiber optic telecommunications systems. Our revenues are
generated from a mix of new construction, renovation, maintenance and
specialized services. We focus on higher margin, larger projects that require
special expertise, such as design-and-build projects that utilize the
capabilities of our in-house engineers, as well as service, maintenance and
certain renovation and upgrade work which tends to either be recurring, have
lower sensitivity to economic cycles, or both.
 
                                        4
<PAGE>   7
 
                                  RISK FACTORS
 
     You should carefully consider the following factors and other information
in this prospectus before deciding to invest in the common stock.
 
EXPOSURE TO DOWNTURNS IN CONSTRUCTION
 
     A large portion of our business is the installation of electrical systems
in newly constructed and renovated buildings, plants and residences. Our ability
to maintain or increase revenues from new installation services will depend on
the number of new construction starts and renovations. Our revenue growth from
year to year is likely to reflect the cyclical nature of the construction
industry. The number of new building starts will be affected by local economic
conditions, changes in interest rates and other related factors. The housing
industry is similarly affected by changes in general and local economic
conditions, such as the following:
 
     - employment and income levels;
 
     - interest rates and other factors affecting the availability and cost of
       financing;
 
     - tax implications for home buyers;
 
     - consumer confidence; and
 
     - housing, demand.
 
Downturns in levels of construction or housing starts could have a material
adverse effect on our business, financial condition and results of operations.
 
MANAGEMENT OF GROWTH
 
     We expect to grow both internally and through acquisitions. We expect to
expend significant time and effort in evaluating, completing and integrating
acquisitions and opening new facilities. We cannot guarantee that our systems,
procedures and controls will be adequate to support our expanding operations,
including the timely receipt of financial information from acquired companies.
This future growth will impose significant added responsibilities on our senior
management, such as the need to identify, recruit and integrate new senior
managers and executives. If we are unable to manage our growth, or if we are
unable to attract and retain additional qualified management, there could be a
material adverse effect on our financial condition and results of operations.
 
LIMITED AVAILABILITY OF ELECTRICIANS
 
     There is currently a shortage of qualified electricians. Our ability to
increase productivity and profitability will be limited by our ability to
employ, train and retain skilled electricians who meet our requirements. There
can be no assurance that, among other things:
 
     - we will be able to maintain the skilled labor force necessary to operate
       efficiently;
 
     - our labor expenses will not increase as a result of a shortage in the
       skilled labor supply; or
 
     - we will not have to curtail internal growth as a result of labor
       shortages.
 
ABSENCE OF COMBINED OPERATING HISTORY
 
     Each of our companies formerly operated as separate independent entities.
As we continue to grow, there can be no assurance that our management group will
be able to oversee the company and effectively implement our operating or growth
strategies. The combined financial results of our companies presented in this
prospectus cover periods during which they were not under the same management
and, therefore, may not be indicative of our future financial or operating
results. Our success will depend on our management's ability to profitably
integrate future acquisitions.
 
                                        5
<PAGE>   8
 
EFFECT OF ACQUISITIONS ON OPERATIONS
 
     We expect to grow through acquisitions. We cannot guarantee that we will be
able to acquire additional businesses or integrate and manage them successfully.
Such acquisitions may involve a number of issues, including:
 
     - adverse short-term effects on our financial results;
 
     - diversion of our management's attention;
 
     - dependence on retention, hiring and training of key personnel; and
 
     - risks associated with unanticipated problems or legal liabilities.
 
     In addition, if industry consolidation becomes more prevalent, the prices
for acquisition candidates may increase and the number of available candidates
may decrease. We believe that the industry will experience continuing
consolidation on both a national and a regional level by other companies that
have acquisition objectives similar to ours. These competitors may have greater
financial resources to finance acquisition and internal growth opportunities and
might be willing to pay higher prices than we are willing to pay for the same
acquisition opportunities. We cannot assure you that the businesses we acquire
will achieve sales and profitability that justify our investment.
 
ACQUISITION FINANCING
 
     We intend to continue to use our common stock as at least part of the
consideration paid for companies we acquire. If the common stock does not
maintain a sufficient value or company owners will not accept common stock as
consideration for their businesses, we may be required to use more of our cash
to pursue our acquisition program. If we do not have sufficient cash or
borrowing capacity, our growth could be limited unless we are able to obtain
additional cash from the sale of debt or common stock in the public market.
 
OPERATING HAZARDS
 
     Our operations are subject to the numerous hazards associated with the
construction of electrical systems. These hazards include, but are not limited
to, electrocutions, fires, mechanical failures or transportation accidents.
These hazards can cause personal injury and loss of life, severe damage to or
destruction of property and equipment and may result in suspension of
operations. We maintain insurance coverage in the amounts and against the risks
we believe are in accordance with industry practice, but this insurance does not
cover all types or amounts of liabilities. No assurance can be given either that
(i) this insurance will be adequate to cover all losses or liabilities we may
incur in our operations or (ii) we will be able to maintain insurance of the
types or at levels that are adequate or at reasonable rates.
 
CONTRACT BIDDING RISKS
 
     We currently generate, and expect to continue to generate, a significant
portion of our revenues under fixed price contracts. We must estimate the costs
of completing a particular project to bid for such fixed price contracts. The
cost of labor and materials, however, may vary from the costs we originally
estimated. These variations along with other risks inherent in performing fixed
price contracts may result in actual revenue and gross profits for a project
differing from those we originally estimated and could result in losses on
projects. Depending upon the size of a particular project, variations from
estimated contract costs can have a significant impact on our operating results
for any fiscal quarter or year.
 
DEPENDENCE ON KEY PERSONNEL
 
     Our operations depend on the continued efforts of our current and future
executive officers and senior management and key management personnel at the
companies we have acquired. We cannot guarantee that any key member of
management at the corporate or subsidiary level will continue in such capacity
for
 
                                        6
<PAGE>   9
 
any particular period of time. The loss of key personnel or the inability to
hire and retain qualified employees could have an adverse effect on our
business, financial condition and results of operations. We do not maintain key
man life insurance.
 
COMPETITION
 
     Our industry is highly competitive and is served by small, owner-operated
private companies, public companies and several large regional companies. We
could also face competition in the future from other competitors entering the
market. Some of our competitors offer a greater range of services, such as
mechanical construction, plumbing and heating, ventilation and air conditioning
services. Competition in the electrical contracting industry depends on a number
of factors, including price. Some of our competitors may have lower overhead
cost structures and may, therefore, be able to provide their services at lower
rates.
 
SEASONALITY; FLUCTUATION OF QUARTERLY OPERATING RESULTS
 
     Our business can be subject to seasonal variations in operations and demand
that affect the construction business, particularly in residential construction.
Our quarterly results may also be affected by the timing of acquisitions, the
timing and size of acquisition costs and regional economic conditions.
Accordingly, our performance in any particular quarter may not be indicative of
the results which can be expected for any other quarter or for the entire year.
 
SUBSTANTIAL DEBT
 
     We have now and, will continue to have a significant amount of debt. Our
substantial indebtedness could have important consequences to you. For example,
it could:
 
     - increase our vulnerability to general adverse economic and industry
       conditions;
 
     - limit our ability to fund future working capital, capital expenditures
       and other general corporate requirements;
 
     - limit our flexibility in planning for, or reacting to, changes in our
       business and the industry in which we operate;
 
     - place us at a disadvantage compared to our competitors that have less
       debt; and
 
     - limit, along with the financial and other restrictive covenants in our
       indebtedness, among other things, our ability to borrow additional funds.
       Additionally, failing to comply with those covenants could result in an
       event of default which, if not cured or waived, could have a material
       adverse effect on us.
 
POTENTIAL FAILURE OF COMPUTER SYSTEMS TO RECOGNIZE YEAR 2000
 
     We are dependent on our computer software programs and operating systems in
operating our business. We also depend on the proper functioning of computer
systems of third parties, such as vendors and clients. The failure of any of
these systems to appropriately interpret the upcoming calendar year 2000 could
have a material adverse effect on our financial condition, results of
operations, cash flow and business prospects. We are currently identifying our
own applications that will not be Year 2000 compliant and taking steps to
determine whether third parties are doing the same. In addition, we are
implementing a plan to prepare our computer systems to be Year 2000 compliant by
September 30, 1999.
 
     Our inability to remedy our own Year 2000 problems or the failure of third
parties to do so may cause business interruptions or shutdown, financial loss,
regulatory actions, reputational harm and/or legal liability. We can not assure
you that our Year 2000 program will be effective or that our estimates about the
timing and cost of completing our program will be accurate.
 
                                        7
<PAGE>   10
 
                     SECURITIES COVERED BY THIS PROSPECTUS
 
     The common stock covered by this prospectus is available for use in future
acquisitions of businesses, properties or securities of entities or persons
engaged in the electrical contracting and other related businesses. The
consideration offered by Integrated Electrical Services, Inc. in such
acquisitions, in addition to the common stock offered by this prospectus, may
include cash, debt or other securities, or assumption by Integrated Electrical
Services, Inc. of liabilities of the businesses being acquired, or a combination
thereof. It is contemplated that the terms of each acquisition will be
determined by negotiations between Integrated Electrical Services, Inc. and the
management or the owners of the assets to be acquired or the owners of the
securities (including newly issued securities) to be acquired, with Integrated
Electrical Services, Inc. taking into account the quality of management, the
past and potential earning power and growth of the assets or securities to be
acquired, and other relevant factors. It is anticipated that the common stock
issued in acquisitions hereunder will be valued at a price reasonably related to
the market value of the common stock either at the time the terms of the
acquisition are tentatively agreed upon or at or about the time or times of
delivery of the shares.
 
                                        8
<PAGE>   11
 
                                 LEGAL MATTERS
 
     Certain legal matters in connection with the common stock being offered
hereby will be passed upon for Integrated Electrical Services, Inc. by John F.
Wombwell, Senior Vice President, General Counsel and Secretary of Integrated
Electrical Services, Inc. Mr. Wombwell owns 96,000 shares of common stock and
has options to purchase 93,750 shares of common stock.
 
                                    EXPERTS
 
     The financial statements of Integrated Electrical Services, Inc. and
subsidiaries and PCX Corporation incorporated by reference in this prospectus
have been audited by Arthur Andersen LLP, independent public accountants, as
indicated in their reports with respect thereto, and upon the authority of such
firm as experts in giving said reports.
 
     The financial statements of Primo Electric Company incorporated by
reference in this prospectus have been audited by Hertzbach & Company, P.A.,
Independent Public Accountants, as stated in their report therein.
 
     The financial statements of Kayton Electric, Inc. incorporated by reference
in this prospectus have been audited by KPMG Peat Marwick LLP, Independent
Public Accountants, as stated in their report therein.
 
     The financial statements of Bachofner Electric, Inc. incorporated by
reference in this prospectus have been audited by Peck & Kopacek, P.C.,
Independent Public Accountants, as stated in their report therein.
 
                                        9
<PAGE>   12
 
                     [INTEGRATED ELECTRICAL SERVICES LOGO]
 
                               21,000,000 SHARES
                                  COMMON STOCK
 
                             ---------------------
 
                                   PROSPECTUS
                             ---------------------
 
      WE HAVE NOT AUTHORIZED ANY DEALER, SALESPERSON OR OTHER PERSON TO GIVE YOU
WRITTEN INFORMATION OTHER THAN THIS PROSPECTUS OR TO MAKE REPRESENTATIONS AS TO
MATTERS NOT STATED IN THIS PROSPECTUS. YOU MUST NOT RELY ON UNAUTHORIZED
INFORMATION. THIS PROSPECTUS IS NOT AN OFFER TO SELL THESE SECURITIES OR OUR
SOLICITATION OF YOUR OFFER TO BUY THESE SECURITIES IN ANY JURISDICTION WHERE
THAT WOULD NOT BE PERMITTED OR LEGAL. NEITHER THE DELIVERY OF THIS PROSPECTUS
NOR ANY SALES MADE HEREUNDER AFTER THE DATE OF THIS PROSPECTUS SHALL CREATE AN
IMPLICATION THAT THE INFORMATION CONTAINED HEREIN OR THE AFFAIRS OF THE COMPANY
HAVE NOT CHANGED SINCE THE DATE THEREOF.
<PAGE>   13
 
The information in this prospectus is not complete and may be changed. We may
not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and is not soliciting an offer to buy these securities
in any state where the offer or sale is not permitted.
 
              [ALTERNATE PAGE FOR SELLING STOCKHOLDER PROSPECTUS]
 
                SUBJECT TO COMPLETION, DATED FEBRUARY   , 1999.
 
PROSPECTUS
 
                     [INTEGRATED ELECTRICAL SERVICES LOGO]
 
                               21,000,000 SHARES
                                  COMMON STOCK
 
                             ---------------------
 
THE COMPANY:
 
     - Our company is the third largest provider of electrical contracting and
       maintenance services in the United States.
 
     - Our address is:
       Integrated Electrical Services, Inc.
       515 Post Oak Boulevard
       Suite 450
       Houston, Texas 77027-9408
       (713) 860-1500
 
THE OFFERING:
 
     - 21,000,000 shares of common stock.
 
     - All of the common stock offered by way of this prospectus will be
       offered, from time to time, by stockholders of Integrated Electrical
       Services, Inc. These shares were received by such Stockholders as
       consideration for the securities or assets of their businesses. We will
       receive none of the proceeds of this offering.
 
     - Our common stock trades under the symbol "IEE." The last reported sale
       price of the common stock on February 3, 1999 was $19 7/16.
 
     THIS INVESTMENT INVOLVES RISK. SEE "RISK FACTORS" BEGINNING ON PAGE 5.
 
                             ---------------------
 
NEITHER THE SEC NOR ANY STATE SECURITIES COMMISSION HAS DETERMINED WHETHER THIS
PROSPECTUS IS TRUTHFUL OR COMPLETE. NOR HAVE THEY MADE, NOR WILL THEY MAKE, ANY
      DETERMINATION AS TO WHETHER ANYONE SHOULD BUY THESE SECURITIES. ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
<PAGE>   14
 
              [ALTERNATE PAGE FOR SELLING STOCKHOLDER PROSPECTUS]
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                               PAGE
                                                               ----
<S>                                                            <C>
Where You Can Find More Information.........................     2
The Company.................................................     4
Risk Factors................................................     5
Plan of Distribution........................................     8
Legal Matters...............................................     9
Experts.....................................................     9
</TABLE>
 
                             ---------------------
 
                           FORWARD-LOOKING STATEMENTS
 
     This prospectus includes forward-looking statements. We have based these
forward-looking statements on our current expectations and projections about
future events. These forward-looking statements are subject to risks,
uncertainties and assumptions about us, including, among other things:
 
     - our anticipated growth strategies;
 
     - our expected internal growth;
 
     - anticipated trends and conditions in our industry;
 
     - our ability to integrate acquired businesses;
 
     - our ability to implement a Year 2000 readiness program;
 
     - our future capital needs; and
 
     - our ability to compete.
 
     We undertake no obligation to publicly update or revise any forward-looking
statements, whether as a result of new information, future events or otherwise.
In light of these risks, uncertainties and assumptions, the forward-looking
events discussed in this prospectus might not occur.
                             ---------------------
 
                      WHERE YOU CAN FIND MORE INFORMATION
 
     We file annual, quarterly and special reports, proxy statements and other
information with the Securities and Exchange Commission (the "SEC"). You may
read and copy any reports, statements or other information we file at the SEC's
public reference rooms in Washington, D.C., New York, New York and Chicago,
Illinois. Please call the SEC at 1-800-SEC-0330 for further information on the
public reference rooms. Our SEC filings are also available to the public from
commercial document retrieval services and at the Internet world wide web site
maintained by the SEC at www.sec.gov.
 
     We filed a Registration Statement on Form S-4 to register with the SEC the
common stock to be issued (the "Registration Statement"). This prospectus is a
part of that Registration Statement.
 
                                        2
<PAGE>   15
 
              [ALTERNATE PAGE FOR SELLING STOCKHOLDER PROSPECTUS]
 
                              PLAN OF DISTRIBUTION
 
     We are registering the common stock on behalf of the selling stockholders.
As used herein, "selling stockholders" includes donees and pledgees selling
shares received from a named selling stockholder after the date of this
prospectus. All costs, expenses and fees in connection with the registration of
the common stock offered hereby will be borne by us. Brokerage commissions and
similar selling expenses, if any, attributable to the sale of common stock will
be borne by the selling stockholders. Sales of common stock may be effected by
selling stockholders from time to time in one or more types of transactions
(which may include block transactions) on the NYSE, in the over-the-counter
market, in negotiated transactions, through put or call options transactions
relating to the common stock, through short sales of common stock, or a
combination of such methods of sale, at market prices prevailing at the time of
sale, or at negotiated prices. Such transactions may or may not involve brokers
or dealers. The selling stockholders have advised us that they have not entered
into any agreements, understandings or arrangements with any underwriters or
broker-dealers regarding the sale of their securities, nor is there an
underwriter or coordinating broker acting in connection with the proposed sale
of common stock by the selling stockholders.
 
     The selling stockholders may effect such transactions by selling common
stock directly to purchasers or to or through broker-dealers, which may act as
agents or principals. Such broker-dealers may receive compensation in the form
of discounts, concessions, or commissions from selling stockholders and/or the
purchasers of common stock for whom such broker-dealers may act as agents or to
whom they sell as principal, or both (which compensation as to a particular
broker-dealer might be in excess of customary commissions).
 
     The selling stockholders and any broker-dealers that act in connection with
the sale of common stock might be deemed to be "underwriters" within the meaning
of Section 2(11) of the Securities Act of 1933 (the "Securities Act"), and any
commissions received by such broker-dealers and any profit on the resale of the
common stock sold by them while acting as principals might be deemed to be
underwriting discounts or commissions under the Securities Act. We have agreed
to indemnify each selling stockholder against certain liabilities, including
liabilities arising under the Securities Act. The selling stockholders may agree
to indemnify any agent, dealer or broker-dealer that participates in
transactions involving sales of the common stock against certain liabilities,
including liabilities arising under the Securities Act.
 
     Because selling stockholders may be deemed to be "underwriters" within the
meaning of Section 2(11) of the Securities Act, the selling stockholders will be
subject to the prospectus delivery requirements of the Securities Act, which may
include delivery through the facilities of the NYSE pursuant to Rule 153 under
the Securities Act. We have informed the selling stockholders that the anti-
manipulative provisions of Regulation M promulgated under the Exchange Act may
apply to their sales in the market.
 
     Selling stockholders also may resell all or a portion of the common stock
in open market transactions in reliance upon Rule 144 under the Securities Act,
provided they meet the criteria and conform to the requirements of such Rule.
 
     Upon our being notified by a selling stockholders that any material
arrangement has been entered into with a broker-dealer for the sale of common
stock through a block trade, special offering, exchange distribution or
secondary distribution or a purchase by a broker or dealer, a supplement to this
prospectus will be filed, if required, pursuant to Rule 424(b) under the Act,
disclosing (i) the name of each such selling stockholder and of the
participating broker-dealer(s), (ii) the number of shares involved, (iii) the
price at which such shares were sold, (iv) the commissions paid or discounts or
concessions allowed to such broker-dealer(s), where applicable, (v) that such
broker-dealer(s) did not conduct any investigation to verify the information set
out or incorporated by reference in this prospectus and (vi) other facts
material to the transaction. In addition, upon the company being notified by a
selling stockholders that a donee or pledgee intends to sell more than 500
shares, a supplement to this prospectus will be filed.
                                        8
<PAGE>   16
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
     Subsection (a) of section 145 of the General Corporation Law of the State
of Delaware empowers a corporation to indemnify any person who was or is a party
or is threatened to be made a party to any threatened, pending or completed
action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the corporation) by
reason of the fact that he is or was a director, officer, employee or agent of
the corporation, or is or was serving at the request of the corporation as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by him in connection with such action, suit or proceeding if he acted
in good faith and in a manner he reasonably believed to be in or not opposed to
the best interests of the corporation, and, with respect to any criminal action
or proceeding, had no reasonable cause to believe his conduct was unlawful.
 
     Subsection (b) of Section 145 empowers a corporation to indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, or suit by or in the right of the
corporation to procure a judgment in its favor by reason of the fact that such
person acted in any of the capacities set forth above, against expenses
(including attorneys' fees) actually and reasonably incurred by him in
connection with the defense or settlement of such action or suit if he acted in
good faith and in a manner he reasonably believed to be in or not opposed to the
best interests of the corporation, except that no indemnification may be made in
respect of any claim, issue or matter as to which such person shall have been
made to be liable to the corporation unless and only to the extent that the
Court of Chancery or the court in which such action or suit was brought shall
determine upon application that, despite the adjudication of liability but in
view of all the circumstances of the case, such person is fairly and reasonably
entitled to indemnity for such expenses which the Court of Chancery or such
other court shall deem proper.
 
     Section 145 further provides that to the extent a director or officer of a
corporation has been successful on the merits or otherwise in the defense of any
action, suit or proceeding referred to in subsections (a) and (b) of Section 145
in the defense of any claim, issue or matter therein, he shall be indemnified
against expenses (including attorneys' fees) actually and reasonably incurred by
him in connection therewith; that indemnification provided for by Section 145
shall not be deemed exclusive of any other rights to which the indemnified party
may be entitled; that indemnification provided for by Section 145 shall, unless
otherwise provided when authorized or ratified, continue as to a person who has
ceased to be a director, officer, employee or agent and shall inure to the
benefit of such person's heirs, executors and administrators; and empowers the
corporation to purchase and maintain insurance on behalf of a director or
officer of the corporation against any liability asserted against him and
incurred by him in any such capacity, or arising out of his status as such
whether or not the corporation would have the power to indemnify him against
such liabilities under Section 145.
 
     Section 102(b)(7) of the General Corporation Law of the State of Delaware
provides that a certificate of incorporation may contain a provision eliminating
or limiting the personal liability of a director to the corporation or its
stockholders for monetary damages for breach of fiduciary duty as a director
provided that such provision shall not eliminate or limit the liability of a
director (i) for any breach of the director's duty of loyalty to the corporation
or its stockholders, (ii) for acts or omissions not in good faith or which
involve intentional misconduct or a knowing violation of law, (iii) under
Section 174 of the Delaware General Corporation Law, or (iv) for any transaction
from which the director derived an improper personal benefit.
 
                                      II-1
<PAGE>   17
 
     Article Eighth of the Company's Amended and Restated Certificate of
Incorporation states that:
 
     No director of the Corporation shall be personally liable to the
Corporation or its stockholders for monetary damages for breach of fiduciary
duty by such director as a director; provided, however, that this Article Eighth
shall not eliminate or limit the liability of a director to the extent provided
by applicable law (i) for any breach of the director's duty of loyalty to the
Corporation or its stockholders, (ii) for acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii) under
Section 174 of the DGCL or (iv) for any transaction from which the director
derived an improper personal benefit. No amendment to or repeal of this Article
Eighth shall apply to, or have any effect on, the liability or alleged liability
of any director of the Corporation for or with respect to any acts or omissions
of such director occurring prior to such amendment or repeal. If the DGCL is
amended to authorize corporate action further eliminating or limiting the
personal liability of directors, then the liability of a director of the
Corporation shall be eliminated or limited to the fullest extent permitted by
the DGCL, as so amended.
 
     In addition, Article VI of the Company's Bylaws further provides that the
Company shall indemnify its officers, directors and employees to the fullest
extent permitted by law.
 
     The Company intends to enter into indemnification agreements with each of
its executive officers and directors.
 
     Under Section of the Underwriting Agreement filed as Exhibit 1.1 to this
Registration Statement, the Underwriters have agreed to indemnify, under certain
conditions, the Company, its officers and directors, and persons who control the
Company within the meaning of the Securities Act of 1933, as amended, against
certain liabilities.
 
     These transactions were completed without registration under the Securities
Act of 1933 in reliance on the exemption provided by Section 4(2) of the
Securities Act of 1933.
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
     (a) Exhibits
 
<TABLE>
<C>                      <S>
 
            3.1          -- Amended and Restated Certificate of Incorporation as
                            amended. (Incorporated by reference to 3.1 to the
                            Registration Statement on Form S-1 (File No. 333-38715)
                            of the Company)
            3.2          -- Bylaws, as amended. (Incorporated by reference to 3.2 to
                            the Annual Report on Form 10-K for the year ended
                            September 30, 1998 of the Company)
            4.1          -- Specimen Common Stock Certificate. (Incorporated by
                            reference to 4.1 to the Registration Statement on Form
                            S-1 (File No. 333-38715) of the Company)
            5.1          -- Opinion of John F. Wombwell
           10.1          -- Form of Employment Agreement (Incorporated by reference
                            to 10.1 to the Registration Statement on Form S-1 (File
                            No. 333-38715) of the Company)
           10.2          -- Form of Officer and Director Indemnification Agreement.
                            (Incorporated by reference to 10.2 to the Registration
                            Statement on Form S-1 (File No. 333-38715) of the
                            Company)
           10.3          -- Integrated Electrical Services, Inc. 1997 Stock Plan.
                            (Incorporated by reference to 10.3 to the Registration
                            Statement on Form S-1 (File No. 333-38715) of the
                            Company)
           10.4          -- Integrated Electrical Services, Inc. 1997 Directors Stock
                            Plan. (Incorporated by reference to 10.4 to the
                            Registration Statement on Form S-1 (File No. 333-38715)
                            of the Company)
</TABLE>
 
                                      II-2
<PAGE>   18
<TABLE>
<C>                      <S>
           10.5          -- Credit Agreement dated July 30, 1998, among the Company,
                            the Financial Institutions named therein and NationsBank
                            of Texas, N.A., including Guaranty, Pledge Agreement,
                            Security Agreement, form of promissory note, and form of
                            swing line note. (Incorporated by reference to 10.5 to
                            Post-Effective Amendment No. 1 to the Registration
                            Statement on Form S-1 (File No. 333-50031) of the
                            Company)
           10.6          -- Amendment No. 1 dated September 30, 1998, to the Credit
                            Agreement dated July 30, 1998, among the Company, the
                            Financial Institutions named therein and NationsBank of
                            Texas, N.A. (Incorporated by reference to 10.6 to the
                            Company's Annual Report on Form 10-K/A for the year ended
                            September 30, 1998)
          *10.7          -- Amendment No. 2 dated January 18, 1999, to the Credit
                            Agreement dated July 30, 1998, among the Company, the
                            Financial Institutions named therein and NationsBank of
                            Texas, N.A.
           10.8          -- Form of Lock-up Agreement entered into by the Company and
                            the stockholders set forth on Schedule A thereto.
                            (Incorporated by reference to 10.6 to the Registration
                            Statement on Form S-1 (File No. 333-38715) of the
                            Company)
           23.1          -- Consent of John F. Wombwell (included in Exhibit 5.1)
          *23.2          -- Consent of Arthur Andersen LLP
          *23.3          -- Consent of Hertzbach & Company, P.A.
          *23.4          -- Consent of KPMG Peat Marwick LLP
          *23.5          -- Consent of Peck & Kopacek, P.C.
          *23.6          -- Consent of Arthur Andersen LLP
</TABLE>
 
- ---------------
 
* Filed herewith.
 
ITEM 22. UNDERTAKINGS
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act, and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred
or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.
 
     The undersigned registrant hereby undertakes:
 
          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this registration statement:
 
             (i) To include any prospectus required by section 10(a)(3) of the
        Securities Act of 1933;
 
             (ii) To reflect in the prospectus any facts or events arising after
        the effective date of the registration statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in the registration statement. Notwithstanding the foregoing, any
        increase or decrease in volume of securities offered (if the total
        dollar value of securities offered would not exceed that which was
        registered) and any deviation from the low or high end of the estimated
        maximum offering range
 
                                      II-3
<PAGE>   19
 
        may be reflected in the form of prospectus filed with the Commission
        pursuant to Rule 424(b) if, in the aggregate, the changes in volume and
        price represent no more than 20% change in the maximum aggregate
        offering price set forth in the "Calculation of Registration Fee" table
        in the effective registration statement.
 
             (iii) To include any material information with respect to the plan
        of distribution not previously disclosed in the registration statement
        or any material change to such information in the registration
        statement.
 
          (2) That, for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.
 
          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
          (4) That, for purposes of determining any liability under the
     Securities Act of 1933, each filing of the registrant's annual report
     pursuant to section 13(a) or section 15(d) of the Securities Exchange Act
     of 1934 (and, where applicable, each filing of an employee benefit plan's
     annual report pursuant to section 15(d) of the Securities Exchange Act of
     1934) that is incorporated by reference in the registration statement shall
     be deemed to be a new registration statement relating to the securities
     offered therein, and the offering of such securities at that time shall be
     deemed to be the initial bona fide offering thereof.
 
          (5) That prior to any public reoffering of the securities registered
     hereunder through use of a prospectus which is a part of this registration
     statement, by any person or party who is deemed to be an underwriter within
     the meaning of Rule 145(c), the issuer undertakes that such reoffering
     prospectus will contain the information called for by the applicable
     registration form with respect to reofferings by persons who may be deemed
     underwriters, in addition to the information called for by the other Items
     of the applicable form.
 
          (6) That every prospectus (i) that is filed pursuant to paragraph (5)
     immediately preceding, or (ii) that purports to meet the requirements of
     section 10(a)(3) of the Act and is used in connection with an offering of
     securities subject to Rule 415, will be filed as a part of an amendment to
     the registration statement and will not be used until such amendment is
     effective, and that, for purposes of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.
 
          (7) To respond to requests for information that is incorporated by
     reference into the prospectus pursuant to Items 4, 10(b), 11, or 13 of this
     Form, within one business day of receipt of such request, and to send the
     incorporated documents by first class main or other equally prompt means.
     This includes information contained in documents filed subsequent to the
     effective date of the registration statement through the date of responding
     to the request.
 
          (8) To supply by means of a post-effective amendment all information
     concerning a transaction, and the company being acquired involved therein,
     that was not the subject of and included in the registration statement when
     it became effective.
 
                                      II-4
<PAGE>   20
 
                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Post Effective Amendment No. 2 for Form S-4 to its
Registration Statement on Form S-1 to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Houston, State of Texas,
on February 3, 1999.
 
                                            INTEGRATED ELECTRICAL SERVICE, INC.
 
                                            By:       /s/ JIM P. WISE
                                              ----------------------------------
                                                         Jim P. Wise
                                                President and Chief Executive
                                                            Officer
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities indicated on February 3, 1999.
 
<TABLE>
<CAPTION>
                      SIGNATURE                                            TITLE
                      ---------                                            -----
<C>                                                    <S>
                   /s/ JIM P. WISE                     President, Chief Executive Officer and
- -----------------------------------------------------  Director (Principal Executive Officer and
                     Jim P. Wise                       Principal Financial Officer)
 
                /s/ J. PAUL WITHROW*                   Vice President and Chief Accounting Officer
- -----------------------------------------------------  (Principal Accounting Officer)
                   J. Paul Withrow
 
                /s/ C. BRYAN SYNDER*                   Chairman of the Board of Directors
- -----------------------------------------------------
                   C. Bryan Synder
 
                  /s/ JON POLLOCK*                     Vice Chairman of the Board of Directors
- -----------------------------------------------------
                     Jon Pollock
 
                                                       Director
- -----------------------------------------------------
                  Donald Paul Hodel
 
                  /s/ JERRY MILLS*                     Director
- -----------------------------------------------------
                     Jerry Mills
 
                 /s/ BEN L. MUELLER*                   Director
- -----------------------------------------------------
                   Ben L. Mueller
 
                  /s/ RICHARD MUTH*                    Director
- -----------------------------------------------------
                    Richard Muth
 
                /s/ ALAN R. SIELBECK*                  Director
- -----------------------------------------------------
                  Alan R. Seilbeck
 
                 /s/ ROBERT STALVEY*                   Director
- -----------------------------------------------------
                   Robert Stalvey
</TABLE>
 
                                      II-5
<PAGE>   21
 
<TABLE>
<CAPTION>
                      SIGNATURE                                            TITLE
                      ---------                                            -----
<C>                                                    <S>
               /s/ RICHARD L. TUCKER*                  Director
- -----------------------------------------------------
                  Richard L. Tucker
 
                    /s/ BOB WEIK*                      Director
- -----------------------------------------------------
                      Bob Weik
</TABLE>
 
*By:       /s/ JIM P. WISE
 
     -------------------------------
               Jim P. Wise
     Pursuant to a power-of-attorney
                  filed
     with the Registration Statement
                   on
         Form S-1 (333-45479) on
             April 14, 1998.
 
                                      II-6
<PAGE>   22
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
        EXHIBIT
         NUMBER                                  DESCRIPTION
        -------                                  -----------
<C>                      <S>
 
           3.1           -- Amended and Restated Certificate of Incorporation as
                            amended. (Incorporated by reference to 3.1 to the
                            Registration Statement on Form S-1 (File No. 333-38715)
                            of the Company)
           3.2           -- Bylaws, as amended. (Incorporated by reference to 3.2 to
                            the Annual Report on Form 10-K for the year ended
                            September 30, 1998 of the Company)
           4.1           -- Specimen Common Stock Certificate. (Incorporated by
                            reference to 4.1 to the Registration Statement on Form
                            S-1 (File No. 333-38715) of the Company)
           5.1           -- Opinion of John F. Wombwell
          10.1           -- Form of Employment Agreement (Incorporated by reference
                            to 10.1 to the Registration Statement on Form S-1 (File
                            No. 333-38715) of the Company)
          10.2           -- Form of Officer and Director Indemnification Agreement.
                            (Incorporated by reference to 10.2 to the Registration
                            Statement on Form S-1 (File No. 333-38715) of the
                            Company)
          10.3           -- Integrated Electrical Services, Inc. 1997 Stock Plan.
                            (Incorporated by reference to 10.3 to the Registration
                            Statement on Form S-1 (File No. 333-38715) of the
                            Company)
          10.4           -- Integrated Electrical Services, Inc. 1997 Directors Stock
                            Plan. (Incorporated by reference to 10.4 to the
                            Registration Statement on Form S-1 (File No. 333-38715)
                            of the Company)
          10.5           -- Credit Agreement dated July 30, 1998, among the Company,
                            the Financial Institutions named therein and NationsBank
                            of Texas, N.A., including Guaranty, Pledge Agreement,
                            Security Agreement, form of promissory note, and form of
                            swing line note. (Incorporated by reference to 10.5 to
                            Post-Effective Amendment No. 1 to the Registration
                            Statement on Form S-1 (File No. 333-50031) of the
                            Company)
          10.6           -- Amendment No. 1 dated September 30, 1998, to the Credit
                            Agreement dated July 30, 1998, among the Company, the
                            Financial Institutions named therein and NationsBank of
                            Texas, N.A. (Incorporated by reference to 10.6 to the
                            Company's Annual Report on Form 10-K/A for the year ended
                            September 30, 1998)
         *10.7           -- Amendment No. 2 dated January 18, 1999, to the Credit
                            Agreement dated July 30, 1998, among the Company, the
                            Financial Institutions named therein and NationsBank of
                            Texas, N.A.
          10.8           -- Form of Lock-up Agreement entered into by the Company and
                            the stockholders set forth on Schedule A thereto.
                            (Incorporated by reference to 10.6 to the Registration
                            Statement on Form S-1 (File No. 333-38715) of the
                            Company)
          23.1           -- Consent of John F. Wombwell (included in Exhibit 5.1)
         *23.2           -- Consent of Arthur Andersen LLP
         *23.3           -- Consent of Hertzbach & Company, P.A.
         *23.4           -- Consent of KPMG Peat Marwick LLP
         *23.5           -- Consent of Peck & Kopacek, P.C.
         *23.6           -- Consent of Arthur Andersen LLP
</TABLE>
 
- ---------------
 
* Filed herewith.

<PAGE>   1



                                                                    EXHIBIT 10.7


                                 AMENDMENT NO. 2


         This Amendment No. 2 dated as of January 18, 1999 (this "Agreement"),
is among Integrated Electrical Services, Inc., a Delaware corporation (the
"Borrower"), the undersigned financial institutions parties to the Credit
Agreement referred to below (the "Banks"), and NationsBank, N.A., as agent (the
"Agent") for the financial institutions that are parties to the Credit
Agreement.

                                  INTRODUCTION

         Reference is made to the Credit Agreement dated as of July 30, 1998 (as
modified, the "Credit Agreement"), among the Borrower, the Banks, and the Agent,
the defined terms of which are used herein unless otherwise defined herein. The
Borrower, the Banks, and the Agent have agreed to modify the restrictive
covenants to permit the Borrower to issue certain subordinated notes and to
modify certain financial covenants and make other amendments to the Credit
Agreement as set forth herein in connection therewith.

         THEREFORE, in connection with the foregoing and for other good and
valuable consideration, the Borrower, the Banks, and the Agent hereby agree as
follows:

         Section 1           Amendment.

1.1               The following definitions are replaced or inserted, as
         applicable, into Section 1.1 of the Credit Agreement in the appropriate
         alphabetical order as set forth below:

                  "Applicable Margin" means, with respect to interest rates,
         unused commitment fees, and letter of credit fees and as of any date of
         its determination, an amount equal to the percentage amount set forth
         in the table below opposite the applicable ratio of (a) the
         consolidated Total Debt of the Borrower as of the end of the fiscal
         quarter then most recently ended to (b) the consolidated EBITDA of the
         Borrower for the four fiscal quarters then most recently ended:

<TABLE>
<CAPTION>
   Total Debt                   Applicable Margin        Applicable Margin          Applicable Margin
   to EBITDA                    LIBOR Tranches and       Prime Rate Tranche         Commitment Fee
   ---------                    Letter of Credit Fee     ------------------         --------------
                                --------------------
<S>                                    <C>                      <C>                       <C>   
<=1.50                                 1.00%                    0.00%                     0.250%
 >1.50 but <=2.00                      1.25%                    0.00%                     0.250%
 >2.00 but <=2.50                      1.50%                    0.00%                     0.300%
 >2.50 but <=3.00                      1.75%                    0.25%                     0.375%
 >3.00                                 2.00%                    0.50%                     0.375%
</TABLE>

                                        1

<PAGE>   2


         The foregoing ratio and resulting Applicable Margin shall be based upon
         Schedule C of the most recent Compliance Certificate delivered to the
         Agent pursuant to Section 5.2(a) or Section 5.2(b) (provided that for
         the period from the determination of the Applicable Margin based on the
         first Compliance Certificate until the date when the Applicable Margin
         is reset based upon the Compliance Certificate for the period ending
         December 31, 1998, the ratio shall be deemed to be the greater of the
         ratio as so determined or 1.51 and the Applicable Margin shall be set
         accordingly).

         Any adjustments to the Applicable Margin shall become effective on the
         45th day following the last day of each fiscal quarter or on the 90th
         day following the last day of each fiscal year as applicable; provided,
         however, that if any such Compliance Certificate is not delivered when
         required hereunder, the Applicable Margin shall be deemed to be the
         maximum percentage amount in each table from such 45th or 90th day
         until such Compliance Certificate is received by the Agent.

         Upon any change in the Applicable Margin, the Agent shall promptly
         notify the Borrower and the Banks of the new Applicable Margin.

                  "EBIT" means, with respect to any Person and for any period of
         its determination, the consolidated net income of such Person for such
         period, plus the consolidated interest expense and income taxes of such
         Person for such period, minus all extraordinary gains and all other
         non-cash income added to the consolidated net income of such Person for
         such period, and further, excluding the $17,036,000 non-cash,
         non-recurring compensation charge in connection with the Acquisition
         disclosed in the Borrower's March 31, 1998, Form 10-Q.

                  "Permitted Debt" means all of the following Debt:

                  (a) Debt in the form of the Credit Obligations;

                  (b) Debt in the form of indebtedness for borrowed money and
         letters of credit owed by any Subsidiary of the Borrower prior to the
         acquisition of such Subsidiary by the Borrower in an Acquisition
         transaction, or owed by any Person that is the subject of any
         Acquisition assumed by the Borrower or any Subsidiary of the Borrower
         in connection with such Acquisition, provided that with respect to any
         such indebtedness, arrangements satisfactory to the Agent for the
         repayment of such indebtedness within 90 days following the closing of
         the Acquisition are made prior to the closing of the Acquisition and
         such arrangements are executed;

                  (c) Debt in the form of (i) purchase money indebtedness and
         Capital Leases, (ii) indebtedness for borrowed money and letters of
         credit owed by any

                                        2

<PAGE>   3


         Subsidiary of the Borrower prior to the acquisition of such Subsidiary
         by the Borrower in an Acquisition transaction, or owed by any Person
         that is the subject of any Acquisition assumed by the Borrower or any
         Subsidiary of the Borrower in connection with such Acquisition, and
         (iii) other indebtedness, which Debt under clauses (i), (ii), and (iii)
         together are in an aggregate outstanding amount not to exceed the
         greater of (A) $7,500,000 or (B) 4% of the consolidated Net Worth of
         the Borrower as of the last day of the fiscal quarter of the Borrower
         most recently ended;

                  (d) Debt in the form of Subordinated Debt and the Senior
         Subordinated Notes;

                  (e) Debt in the form of Qualified Preferred Stock; and

                  (f) Debt in the form of reimbursement obligations for
         performance bonds issued in the ordinary course of business.

                  "Senior Debt" means all Debt of the Borrower and the
         Subsidiaries of the Borrower other than Debt in the form of
         Subordinated Debt and the Senior Subordinated Notes.

                  "Senior Subordinated Notes" means the Senior Subordinated
         Notes due 2009 to be issued by the Borrower during January of 1999
         pursuant to an Indenture among the Borrower, the Guarantors signatories
         thereto, and the trustee named therein in an aggregate principal amount
         of at least $100,000,000, but not to exceed $200,000,000 (together with
         the Guarantees (as therein defined)); provided that the same are issued
         substantially on the terms and conditions (with the uncompleted terms
         and conditions relating to interest rates and redemption prices and
         premiums to be completed by the Borrower in its sole discretion)
         described in the "Description of the Notes" contained in the
         preliminary Offering Memorandum dated January 8, 1999, and attached
         hereto as Exhibit A, together with such changes thereto as the Agent
         shall approve.

                  "Subordinated Debt" means, with respect to the Borrower and as
         of any date of its issuance, any unsecured indebtedness for borrowed
         money, other than the Senior Subordinated Notes, for which the Borrower
         is directly and primarily obligated that (a) arises after the date of
         this Agreement, (b) does not have any stated maturity before the latest
         maturity of any of the Credit Obligations at the time incurred, (c) has
         terms that are no more restrictive than the terms of the Credit
         Documents, and (d) is expressly subordinated to the Credit Obligations
         (i) on the terms and conditions set forth on Schedule III, or (ii) on
         terms approved by the Agent and the Majority Banks in their sole
         discretion, including payment

                                        3

<PAGE>   4


         subordination, remedy subordination, and related terms satisfactory to
         the Agent and the Majority Banks in their sole discretion.

                  "Total Debt" means all Debt of the Borrower and the
         Subsidiaries of the Borrower.

1.2               Section 5.5(a) of the Credit Agreement is amended by replacing
         such Section in its entirety with the following:

                  (a) Net Worth. The Borrower shall not permit the consolidated
         Net Worth of the Borrower as of the last day of each fiscal quarter to
         be less than the difference of (i) the sum of (A) $187,500,000, plus
         (B) 90% of the cumulative quarterly consolidated net income of the
         Borrower after March 31, 1998, for each fiscal quarter of the Borrower
         during which the Borrower has positive consolidated net earnings; plus
         (C) 100% of the net proceeds received by Borrower after March 31, 1998,
         from any sale or issuance of any equity securities of, or any other
         additions to capital by, the Borrower or its Subsidiaries; plus (D) to
         the extent that the required consolidated Net Worth under this Section
         5.5(a) was not increased in clauses (A) through (C) above as a result
         of any Acquisition, 100% of any increase in the consolidated Net Worth
         of the Borrower resulting from any Acquisition minus (ii) the aggregate
         amount of the consideration paid by the Restricted Entities in
         connection with the repurchase by the Borrower of its capital stock.
         Compliance with this paragraph (a) shall be determined based upon
         Schedule C of the applicable Compliance Certificate.

1.3               Section 5.5(b) of the Credit Agreement is amended by replacing
         such Section in its entirety with the following:

                  (b) Maximum Leverage Ratios.

                           (i) Maximum Senior Debt to EBITDA Ratio. As of the
         last day of each fiscal quarter of the Borrower, the Borrower shall not
         permit the ratio of (i) the consolidated Senior Debt of the Borrower as
         of end of such fiscal quarter to (ii) the consolidated EBITDA of the
         Borrower for the preceding four fiscal quarters then ended, to be
         greater than 2.50 to 1.00.

                           (ii) Maximum Total Debt to EBITDA Ratio. As of the
         last day of each fiscal quarter of the Borrower, the Borrower shall not
         permit the ratio of (i) the consolidated Total Debt of the Borrower as
         of end of such fiscal quarter to (ii) the consolidated EBITDA of the
         Borrower for the preceding four fiscal quarters then ended, to be
         greater than 3.50 to 1.00.

                                        4

<PAGE>   5


         Compliance with this paragraph (b) shall be determined based upon
         Schedule C of the applicable Compliance Certificate.

         1.4           Section 5.5(c) of the Credit Agreement is amended by
                  replacing such Section in its entirety with the following:

                  (c) Minimum Fixed Charge Coverage Ratio. As of the last day of
         each fiscal quarter, the Borrower shall not permit the ratio of (i) (A)
         the consolidated EBITDA of the Borrower for the preceding four fiscal
         quarters then ended minus (B) consolidated Cash Taxes paid by the
         Borrower during such period minus (C) the consolidated Capital
         Expenditures (other than Capital Expenditures that are deemed to occur
         solely because of the making of an Acquisition) of the Borrower during
         such period to (ii) (A) the consolidated Interest Expense of the
         Borrower for the preceding four fiscal quarters then ended (excluding,
         however, Interest Expense paid by Persons prior to the respective dates
         on which such Persons became Restricted Entities) plus (B) the
         aggregate amount of Restricted Payments declared or paid by the
         Borrower during such period (excluding, however, Restricted Payments
         permitted pursuant to the proviso to Section 5.10) plus (C) the
         consolidated current maturities of the Borrower (including Capital
         Leases) plus (D) the greater of (1) 20% of the outstanding amount of
         the Revolving Loan as of the last day of such fiscal quarter or (2)
         $4,000,000, to be less than 1.25 to 1.00; provided, that with respect
         to a determination for which any component of such determination
         involves Persons which were not Restricted Entities for the entire
         applicable period of determination, the Cash Taxes paid by each such
         Person during such period may, at the election of the Borrower, be
         deemed to be equal to the product of (a) the actual historical EBIT of
         such Person for the applicable period multiplied by (b) 39%. Compliance
         with this paragraph (c) shall be determined based upon Schedule C of
         the applicable Compliance Certificate.

         1.5           Section 5.10 of the Credit Agreement is amended by
                  replacing such Section in its entirety with the following:

                  5.10 Distributions. The Borrower shall not (a) declare or pay
         any dividends; (b) purchase, redeem, retire, or otherwise acquire for
         value any of its capital stock now or hereafter outstanding; or make
         any distribution of assets to its stockholders as such, whether in
         cash, assets, or in obligations of it; (c) allocate or otherwise set
         apart any sum for the payment of any dividend or distribution on, or
         for the purchase, redemption, or retirement of, any shares of its
         capital stock; or (d) make any other distribution by reduction of
         capital or otherwise in respect of any shares of its capital stock,
         except that the Borrower may make payments of dividends on Qualified
         Preferred Stock; provided, however, that the Borrower

                                        5

<PAGE>   6


         may expend up to an aggregate amount of $35,000,000 to repurchase from
         the holders thereof capital stock of the Borrower.

         1.6           Section 6.1 of the Credit Agreement is amended by adding
                  thereto the following paragraph (j):

                       (j) Senior Subordinated Notes Default. (i) There shall
         occur any default or event of default (and such event or condition is
         not cured within the applicable grace period, if any), however
         denominated, under the Senior Subordinated Notes or the Indenture
         governing the same; (ii) any modification shall be made to the
         subordination provisions or economic terms of the Subordinated Notes or
         the Indenture governing the same without the prior written consent of
         the Majority Banks; or (iii) any "Change of Control Offer" (as defined
         in such Indenture) shall occur.

         Section 2     Amendment Fee. The Borrower shall pay to the Agent for
                  the benefit of the Banks an amendment fee in the amount of
                  $131,250, to be distributed ratably to each Bank in accordance
                  with its respective Revolving Loan Commitment.

         Section 3     Representations and Warranties. The Borrower represents
                  and warrants that (a) the execution, delivery, and performance
                  of this Agreement are within the corporate power and authority
                  of the Borrower and have been duly authorized by appropriate
                  proceedings, (b) this Agreement constitutes legal, valid, and
                  binding obligations of the Borrower enforceable in accordance
                  with its terms, except as limited by applicable bankruptcy,
                  insolvency, reorganization, moratorium, or similar laws
                  affecting the rights of creditors generally and general
                  principles of equity, and (c) upon the effectiveness of this
                  Agreement and the amendment of the Credit Documents as
                  provided for herein, the representations and warranties
                  contained in each Credit Document are true and correct in all
                  material respects, no Event of Default exists under the Credit
                  Documents, and there shall have occurred no event which with
                  notice or lapse of time would become an Event of Default under
                  the Credit Documents.

         Section 4     Effect on Credit Documents. As amended herein, the Credit
                  Documents remain in full force and effect. Except as
                  specifically set forth herein, nothing herein shall act as a
                  waiver of any of the Agent's or the Banks' rights under the
                  Credit Documents as amended, including the waiver of any
                  default or event of default, however denominated. The Borrower
                  must continue to comply with the terms of the Credit
                  Documents, as amended. This Agreement is a Credit Document for
                  the

                                        6

<PAGE>   7


                  purposes of the provisions of the other Credit Documents.
                  Without limiting the foregoing, any breach of representations,
                  warranties, and covenants under this Agreement may be a
                  default or event of default under other Credit Documents.

         Section 5     Effectiveness. This Agreement shall be effective as of
                  the date hereof when the Agent shall have received duly
                  executed counterparts hereof signed by the Borrower, the
                  Agent, and the Majority Banks.

         Section 6     Miscellaneous. The miscellaneous provisions of the Credit
                  Agreement apply to this Agreement. This Agreement shall be
                  governed by and construed and enforced in accordance with the
                  laws of the State of Texas. This Agreement may be signed in
                  any number of counterparts, each of which shall be an
                  original, and may be executed and delivered by telecopier.


                      [Signatures begin on following page.]

                                        7

<PAGE>   8


                 THIS WRITTEN AGREEMENT AND THE CREDIT DOCUMENTS
         REPRESENT THE FINAL AGREEMENT AMONG THE PARTIES AND MAY NOT BE
         CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
         SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.

                  THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

                  EXECUTED as of the date first above written.

                                       BORROWER:

                                       INTEGRATED ELECTRICAL SERVICES, INC.


                                       By: /s/ JIM P. WISE
                                          --------------------------------------
                                               Jim P. Wise
                                               Senior Vice President and
                                               Chief Financial Officer


                                       AGENT:

                                       NATIONSBANK, N.A., as Agent


                                       By: /s/ ALBERT L. WELCH
                                          --------------------------------------
                                               Albert L. Welch
                                               Vice President


                                       BANKS:

                                       NATIONSBANK, N.A.


                                       By: /s/ ALBERT L. WELCH
                                          --------------------------------------
                                               Albert L. Welch
                                               Vice President

                                        8

<PAGE>   9


                                       BANK OF SCOTLAND


                                       By: /s/ JANET TAFFE
                                          --------------------------------------
                                              Janet Taffe
                                              Assistant Vice President


                                       COMERICA BANK - TEXAS


                                       By: /s/ BART BEARDEN
                                          --------------------------------------
                                              Bart Bearden
                                              Vice President


                                       NATIONAL CITY BANK OF KENTUCKY


                                       By: /s/ KEVIN ANDERSON
                                          --------------------------------------
                                              Kevin Anderson
                                              Vice President


                                       PARIBAS

                                       By: /s/ ROSINE K. MATTHEWS
                                          --------------------------------------
                                       Name:  Rosine K. Matthews
                                       Title: Vice President


                                       By: /s/ LARRY ROBINSON
                                          --------------------------------------
                                       Name:  Larry Robinson
                                       Title: Vice President


                                       THE BANK OF NOVA SCOTIA

                                       By: /s/ M. D. SMITH
                                          --------------------------------------
                                       Name:  M. D. Smith
                                       Title: Agent Operations

                                        9

<PAGE>   10


                                       CENTURA BANK

                                       By:    /s/ LOWRY D. PERRY
                                          --------------------------------------
                                       Name:  Lowry D. Perry
                                       Title: Bank Officer


                                       CREDIT LYONNAIS NEW YORK BRANCH

                                       By:    /s/ ROBERT IVOSEVICH
                                          --------------------------------------
                                       Name:  Robert Ivosevich
                                       Title: Senior Vice President


                                       FIRST AMERICAN NATIONAL BANK

                                       By:    /s/ STEPHEN ARNOLD
                                          --------------------------------------
                                       Name:  Stephen Arnold
                                       Title: A.V.P.


                                       SUNTRUST BANK, ATLANTA

                                       By:    /s/ ILLEGIBLE
                                          --------------------------------------
                                       Name:  Illegible
                                       Title: Illegible

                                       By:   /s/ STEVEN J. [ILLEGIBLE]
                                          --------------------------------------
                                       Name:  Steven J. [Illegible]
                                       Title: Corporate Banking Officer

                                       10

<PAGE>   1
                                                                    EXHIBIT 23.2


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


         As independent public accountants, we hereby consent to the
incorporation by reference in this registration statement of our report dated
November 12, 1998 included in Integrated Electrical Services, Inc.'s Annual
Report on Form 10-K for the year ended September 30, 1998, and to all references
to our Firm included in this registration statement.


ARTHUR ANDERSEN LLP

Houston, Texas
February 3, 1999


<PAGE>   1


                                                                    EXHIBIT 23.3

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

         As independent public accountants, we hereby consent to the
incorporation by reference in this Post- Effective Amendment No. 2 on Form S-4
to Form S-1 of Integrated Electrical Services, Inc. of our report dated July 14,
1998, on the financial statements of Prime Electric Company included in
Integrated Electrical Services, Inc.'s Current Report on Form 8-K, filed with
the Securities and Exchange Commission on February 4, 1999, and to all
references to our firm in this registration statement.

                            Hertzbach & Company, P.A.
                           HS&S Professional Building
                               10 Music Fair Road
                             Owings Mills, MD 21117


January 29, 1999


<PAGE>   1


                                                                    EXHIBIT 23.4


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

Board of Directors
Kayton Electric, Inc.

We consent to the incorporation by reference in this Post-Effective Amendment
No. 2 on Form S-4 to Form S-1 of Integrated Electrical Services, Inc. of our
report dated January 28, 1998 (November 19, 1998 as to note 8) on the financial
statements of Kayton Electric, Inc. included in Integrated Electrical Services,
Inc.'s Current Report on Form 8-K, filed with the Securities and Exchange
Commission on February 4, 1999, including references to our firm in the 
Form S-4.

                              KPMG Peat Marwick LLP


Lincoln, Nebraska
February 2, 1999


<PAGE>   1


                                                                    EXHIBIT 23.5


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accounts, we hereby consent to the incorporation by
reference in this Post-Effective Amendment No. 2 on Form S-4 to Form S-1 of
Integrated Electrical Services, Inc. of our report dated January 25, 1999, on
the financial statements of Bachofner Electric, Inc. included in Integrated
Electrical Services, Inc.'s Current Report on Form 8-K, filed with the
Securities and Exchange Commission on February 4, 1999, and to all references to
our firm in this registration statement.

                              Peck & Kopacek, P.C.


Beaverton, Oregon
February 4, 1999

<PAGE>   1

                                                                    EXHIBIT 23.6




CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


To Integrated Electrical Services:

As independent public accountants, we hereby consent to the incorporation by 
reference in this Post-Effective Amendment No. 2 on Form S-4 to Form S-1
of Integrated Electrical Services, Inc. of our report dated March 17, 1998
on the balance sheet of PCX Corporation as of December 31, 1997, and the 
related statements of operations, stockholders' equity and cash flows for the
year then ended included in Integrated Electrical Services, Inc.'s current
report on Form 8-K, filed with the Securities and Exchange Commission on
February 4, 1999, and to all references to our firm in this registration
statement.


                                              /s/ ARTHUR ANDERSEN LLP


Raleigh, North Carolina
February 4, 1999


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