AGREEMENT AND PLAN OF CONTRIBUTION

                                  BY AND AMONG

                         REALTY INFORMATION GROUP, INC.

                                       AND

       THE LIMITED PARTERS OF REALTY INFORMATION GROUP, L.P. NAMED HEREIN

                                       AND

                 THE STOCKHOLDERS OF OLD RIG, INC. NAMED HEREIN


                          EFFECTIVE AS OF MARCH 5, 1998



<PAGE>


                                TABLE OF CONTENTS



ARTICLE I.

PLAN OF CONTRIBUTION...........................................................2
         1.1      THE CONTRIBUTION.............................................2
         1.2      CONSIDERATION................................................2
         1.3      OWNERS' REPRESENTATIVE.......................................3
         1.4      ACCOUNTING TERMS.............................................3


ARTICLE II.

CLOSING........................................................................3
         2.1      LOCATION AND DATE............................................3
         2.2      DELIVERIES...................................................4


ARTICLE III.

REPRESENTATIONS AND WARRANTIES OF THE .........................................4
         3.1      DUE ORGANIZATION.............................................4
         3.2      AUTHORIZATION; VALIDITY......................................5
         3.3      NO CONFLICTS.................................................5
         3.4      CAPITAL STOCK................................................5
         3.5      ABSENCE OF CLAIMS AGAINST COMPANY............................6
         3.6      SECURITIES REPRESENTATIONS...................................6


ARTICLE IV.

 REPRESENTATIONS OF PARENT.....................................................6
         4.1      DUE ORGANIZATION.............................................6
         4.2      AUTHORIZATION; VALIDITY OF OBLIGATIONS.......................6
         4.3      NO CONFLICTS.................................................7
         4.4      CAPITALIZATION OF PARENT AND OWNERSHIP OF PARENT STOCK.......7


ARTICLE V.

COVENANTS......................................................................8
         5.1      COOPERATION..................................................8
         5.2      NOTIFICATION OF CERTAIN MATTERS..............................8




<PAGE>


         5.3      TERMINATION OF CERTAIN AGREEMENTS............................8
         5.4      AMENDMENT OF REGISTRATION RIGHTS.............................8


ARTICLE VI.

CONDITIONS PRECEDENT TO OBLIGATIONS OF PARENT..................................9
         6.1      NO LITIGATION................................................9
         6.2      CONSENTS AND APPROVALS.......................................9
         6.3      REGISTRATION STATEMENT.......................................9
         6.4      IPO..........................................................9
         6.5      TENDER.......................................................9


ARTICLE VII.

CONDITIONS PRECEDENT TO OBLIGATIONS OF THE CONTRIBUTING
PARTIES.......................................................................10
         7.1      NO LITIGATION...............................................10
         7.2      CONSENTS AND APPROVALS......................................10
         7.3      REGISTRATION STATEMENT......................................10
         7.4      IPO.........................................................10
         7.5      LEGAL OPINION...............................................10


ARTICLE VIII.

GENERAL.......................................................................11
         8.1      TERMINATION.................................................11
         8.2      EFFECT OF TERMINATION.......................................11
         8.3      SUCCESSORS AND ASSIGNS......................................11
         8.4      ENTIRE AGREEMENT; AMENDMENT; WAIVER.........................12
         8.5      COUNTERPARTS................................................12
         8.6      BROKERS AND AGENTS..........................................12
         8.7      NOTICES.....................................................12
         8.8      GOVERNING LAW...............................................13
         8.9      SEVERABILITY................................................14
         8.10     ABSENCE OF THIRD PARTY BENEFICIARY RIGHTS...................14
         8.11     FURTHER REPRESENTATIONS.....................................14
         8.12     EFFECTIVENESS OF REPRESENTATIONS WARRANTIES. ...............15



                                       ii

<PAGE>



                       AGREEMENT AND PLAN OF CONTRIBUTION


     THIS  AGREEMENT  AND PLAN OF  CONTRIBUTION  (the  "Agreement")  is made and
effective as of this 5th day of March,  1998,  by and among  Realty  Information
Group,  Inc.,  a  Delaware  corporation  ("Parent"),  formerly  known as  Realty
Information Group (Delaware),  Inc., the undersigned  limited partners of Realty
Information  Group,  L.P. (the  "Contributing  Partners"),  and the  undersigned
stockholders of OLD RIG, Inc. (the "Contributing Stockholders" and, collectively
with the Contributing Partners, the "Contributing  Parties"),  formerly known as
Realty Information Group, Inc.

                                   BACKGROUND

     A. Parent was incorporated on February 2, 1998 (the "Formation")  under the
laws of the State of Delaware  for the purpose of acquiring  certain  commercial
real estate information businesses; and

     B. The  Contributing  Parties  are  security  holders of one or more of the
predecessors of Parent, each of which was formed with the express expectation of
the parties that such entity's  equity  interests might be converted into common
stock of a corporation in connection an initial public offering.

     C. Parent  intends to  undertake an initial  public  offering of its common
stock (the "IPO") in April or May, 1998 and in connection  therewith  intends to
file a  Registration  Statement  on Form S-1 with the  Securities  and  Exchange
Commission promptly following the execution of this Agreement; and

     D. The  Contributing  Stockholders  intend to contribute  their shares (the
"Shares") of capital stock of OLD RIG, Inc. ("RIGINC") to Parent in exchange for
Parent shares in  connection  with the IPO (the "RIGINC  Contribution"),  all to
facilitate the effectuation of the IPO; and

     E. The Contributing  Partners intend to contribute their  partnership units
(the "Units") of Realty  Information Group, L.P. ("RIGLP") to Parent in exchange
for Parent  shares in  connection  with the IPO (the "RIGLP  Contribution"  and,
collectively with the RIGINC Contribution, the "RIG Contributions");

     F. In connection with the Contributions and the IPO, Parent also expects to
receive  from  the the  Stockholders  of  Jamison  Research,  Inc.  ("JRI")  the
contribution  of all of  their  shares  of  capital  stock of JRI to  Parent  in
exchange for Parent shares as set forth  therein (the  "Jamison  Contribution");
and

     G.  The  Formation,  the  IPO,  the  RIG  Contributions,  and  the  Jamison
Contribution are being undertaken pursuant to an integrated transaction intended
to qualify  under  Section 351 of the Internal  Revenue Code of 1986, as amended
(the "Transaction");


<PAGE>



     NOW,   THEREFORE,   in   consideration   of   the   premises   and  of  the
representations,  warranties,  covenants and agreements  herein  contained,  the
parties hereto, intending to be legally bound, agree as follows:


                                   ARTICLE I.

                              PLAN OF CONTRIBUTION

     1.1 THE CONTRIBUTION.  Upon the terms and subject to the conditions hereof,
at the Closing, (a) each Contributing  Stockholder will contribute to Parent all
of the Shares owned by it, and (b) each Contributing  Partner will contribute to
Parent all of the limited  partnership  Units owned by it, in each case free and
clear  of  all  Liens  (defined  below),   in  exchange  for  such  Contributing
Stockholder's  or  Contributing  Partner's  pro rata share of the  Consideration
specified in Section 1.2. For the purposes of this  Agreement,  "Lien" means any
mortgage,  security  interest,  pledge,   hypothecation,   assignment,   deposit
arrangement,  encumbrance,  lien (statutory or otherwise),  charge,  preference,
priority or other security  agreement,  option,  warrant,  attachment,  right of
first  refusal,  preemptive,  conversion,  put,  call or other  claim or  right,
restriction on transfer  (other than  restrictions  imposed by federal and state
securities  laws), or preferential  arrangement of any kind or nature whatsoever
(including  any  conditional  sale  or  other  title  retention  agreement,  any
financing lease involving  substantially  the same economic effect as any of the
foregoing and the filing of any financing statement under the Uniform Commercial
Code or comparable law of any jurisdiction).

     1.2 CONSIDERATION.

         (a) For purposes of this Agreement,  the "Consideration"  shall be such
number of shares of common stock of Parent,  $0.01 par value (the "Parent Common
Stock"),  as the board of Parent  shall decide to issue in  connection  with the
Transaction  less common stock worth Ten Million  Dollars  ($10,000,000.00),  as
adjusted  pursuant to Section 1.2 and Section 1.3 of the Agreement among Parent,
RIGINC,  RIGLP,  JRI  and  the  stockholders  of JRI  (the  "JRI  Contribu  tion
Agreement"),  valued at the  Share  Price (as  defined  in the JRI  Contribution
Agreement).

         (b)  Consideration  issued  to the  Contributing  Stockholders  and the
Contributing Partners shall be Parent Common Stock.

         (c) Pro rata share, as to any Contributing  Stockholder or Contributing
Partner,  shall mean the  fraction,  (i) the  numerator of which is equal to the
number of shares of common stock of RIGINC held by such Contributing Stockholder
or the number of partnership units held by such Contributing  Partner,  and (ii)
the  denominator  of which is the sum  total of the  number  of shares of common
stock  of  RIGINC  held by all  Contributing  Stockholders  plus the  number  of
partnership units held by all Contributing Partners.


                                      - 2 -

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     1.3 OWNERS' REPRESENTATIVE.

         (a) Each  Contributing  Party,  by signing this  Agreement,  designates
Michael R. Klein or, in the event that  Michael R. Klein is unable or  unwilling
to serve,  Andrew C.  Florance,  to be the  Owners'  Representative  solely  for
purposes specified in this Agreement. The Contributing Parties shall be bound by
any  and all  actions  taken  by the  Owners'  Representative  on  their  behalf
consistent with this Agreement.

         (b) The Owners'  Representative is hereby appointed and constituted the
true and lawful  attorney-in-fact of each Contributing Party, with full power in
his or her  name  and on his  or  her  behalf  to act as  specifically  provided
according  to the terms of this  Agreement  in the  absolute  discretion  of the
Owners'  Representative  and to do  all  things  and  to  perform  all  acts  in
connection  with those  specifically  provided  for actions  including,  without
limitation,  executing and delivering all  agreements,  certificates,  receipts,
instructions  and other  instruments  contem  plated by or deemed  advisable  in
connection with this Agreement;  provided,  however, that this power of attorney
shall not be  construed to authorize  the Owners'  Representative  to amend this
Agreement or waive any of the conditions to Closing.  This power of attorney and
all authority  hereby  conferred is granted subject to the interest of the other
Contributing  Parties hereunder and in consideration of the mutual covenants and
agreements made herein,  and shall be irrevocable and shall not be terminated by
any act of any person, by operation of law, whether by such Contributing Party's
death or any other event.

     1.4 ACCOUNTING TERMS.  Except as otherwise  expressly provided herein or in
the Schedules, all accounting terms used in this Agreement shall be interpreted,
and  all  financial  statements,  Schedules,  certificates  and  reports  as  to
financial  matters  required to be delivered  hereunder  shall be  prepared,  in
accordance with GAAP consistently applied.


                                  ARTICLE II.

                                    CLOSING

                  2.1 LOCATION AND DATE. The  consummation  of the  transactions
contemplated by this Agreement (the  "Closing")  shall take place at the offices
of Wilmer,  Cutler & Pickering  on the date that the IPO is  scheduled to close,
providing that all conditions to Closing shall have been satisfied or waived, or
at such  other  time and  date as  Parent  and the  Owners'  Representative  may
mutually agree, which date shall be referred to as the "Closing Date."

                                      - 3 -

<PAGE>


     2.2 DELIVERIES.

         (a) The Contributing Stockholders shall deliver to Parent the following
at the Closing:  (i) stock  certificates  representing  the shares owned by such
persons,  accompanied  by stock powers duly  executed in blank or duly  executed
instruments  of transfer,  in each case with all  necessary  stock  transfer and
other documentary stamps attached, and any other documents that are necessary to
transfer  to Parent good and  marketable  title to such shares free and clear of
all Liens, and (ii) all other documents,  certificates,  instruments or writings
required to be delivered by the Contributing  Stockholders or RIGINC at or prior
to the Closing  pursuant to this  Agreement or otherwise  required in connection
herewith.  Against  delivery  of  such  shares,  Parent  shall  deliver  to each
Contributing  Stockholder  at the Closing  his, her or its pro rata share of the
Consideration and all documents, certificates,  instruments or writings required
to be delivered by Parent at or prior to the Closing  pursuant to this Agreement
or otherwise required in connection herewith.

         (b) The Contributing  Partners shall deliver to Parent the following at
the Closing: (i) limited partnership  certificates  representing the units owned
by such persons,  accompanied  by powers duly executed in blank or duly executed
instruments  of  transfer,  in each case with all  necessary  transfer and other
documentary  stamps  attached,  and any other  documents  that are  necessary to
transfer to Parent good and marketable title to such units free and clear of all
Liens,  and (ii) all other  documents,  certificates,  instruments  or  writings
required to be  delivered by the  Contributing  Partners or RIGLP at or prior to
the Closing  pursuant to this  Agreement  or  otherwise  required in  connection
herewith.  Against  delivery  of  such  units,  Parent  shall  deliver  to  each
Contributing  Partner  at the  Closing  his,  her or its pro  rata  share of the
Consideration and all documents, certificates,  instruments or writings required
to be delivered by Parent at or prior to the Closing  pursuant to this Agreement
or otherwise required in connection herewith.


                                  ARTICLE III.

                      REPRESENTATIONS AND WARRANTIES OF THE
                              CONTRIBUTING PARTIES

     To  induce  Parent  to  enter  into  this   Agreement  and  consummate  the
transactions contemplated hereby, each Contributing Party, solely as to himself,
herself or itself, represents and warrants to Parent as follows:

     3.1 DUE  ORGANIZATION.  To the  extent  such  Contributing  Party  is not a
natural person,  such  Contributing  Party is an entity duly organized,  validly
existing  and is in good  standing  under  the laws of the  jurisdiction  of its
incorporation  and is duly  authorized  and  qualified to do business  under all
applicable laws, regulations, ordinances and orders of public

                                      - 4 -

<PAGE>



authorities  to own,  operate  and  lease  its  properties  and to  carry on its
business in the places and in the manner as now conducted.

     3.2  AUTHORIZATION;  VALIDITY.  Such  Contributing  Party has all requisite
power and  authority to enter into and perform its  obligations  pursuant to the
terms of this Agreement. Such Contributing Party has the full legal right, power
and  authority to enter into this  Agreement and the  transactions  contemplated
hereby.  This  Agreement  is a  legal,  valid  and  binding  obligation  of such
Contributing Party, enforceable in accordance with its terms.

     3.3  NO  CONFLICTS.  The  execution,   delivery  and  performance  of  this
Agreement,  the consummation of the transactions  contemplated  hereby,  and the
fulfillment of the terms hereof will not:

         (a) to the  extent  such  Contributing  Party is not a natural  person,
conflict  with,  or result  in a breach  or  violation  of,  any of the  charter
documents of such person;

         (b)  conflict  with,  or  result in a default  (or would  constitute  a
default but for any  requirement of notice or lapse of time or both) under,  any
document,  agreement or other instrument to which such  Contributing  Party is a
party  or by  which  he,  she or it is  bound,  or  result  in the  creation  or
imposition of any lien,  charge or encumbrance on any his, her or its properties
pursuant to (i) any law or  regulation to which he, she or it or any of his, her
or its property is subject,  or (ii) any judgment,  order or decree to which he,
she or it or any of his, her or its property is subject; or

         (c) violate  any law,  order,  judgment,  rule,  regulation,  decree or
ordinance to which such Contributing  Party is subject or by which he, she or it
is bound including, without limitation.

     3.4 CAPITAL STOCK.

         (a) All of the issued and  outstanding  shares of the capital  stock of
RIGINC  have  been duly  authorized  and  validly  issued,  are  fully  paid and
nonassessable  and are  owned of record  and  beneficially  by the  Contributing
Stockholders  in the amounts set forth in Schedule  3.4(a) free and clear of all
Liens.  There are no voting  agreements  or voting trusts with respect to any of
the outstanding shares of the capital stock of RIGINC.

         (b) All of the  issued and  outstanding  limited  partnership  units of
RIGLP have been duly authorized and validly issued,  and are owned of record and
beneficially by the  Contributing  Partners in the amounts set forth in Schedule
3.4(b)  free and clear of all Liens.  There are no voting  agreements  or voting
trusts with respect to any of the outstanding partnership unuts of RIGLP.


                                      - 5 -

<PAGE>



     3.5 ABSENCE OF CLAIMS AGAINST COMPANY. No Contributing Party has any claims
against RIGINC, RIGLP or Parent (except as provided in this Agreement).

     3.6  SECURITIES   REPRESENTATIONS.   Each  Contributing  Party  other  than
Founders/RIG,  L.L.C.  is an  "Accredited  Investor"  within the  meaning of the
federal securities laws.  Founders/ RIG, L.L.C. at the time it made its decision
to  invest in RIGLP was an  "Accredited  Investor"  within  the  meaning  of the
federal securities laws (and does not know of any reason why it has ceased to be
an "Accredited Investor").  Each Contributing Party has either directly,  and/or
through RIGINC or RIGLP, obtained sufficient  information  concerning Parent and
its business, present and proposed, to have made an informed investment decision
concerning this Agreement and the Transactions  contemplated hereby, and has had
an adequate  opportunity  to ask  questions  and  receive  answers to his or her
satisfaction  from the  officers  of  RIGINC,  RIGLP and Parent  concerning  the
business,  operations and financial condition of RIGINC,  RIGLP and Parent. Each
Contributing  Party has such  knowledge and experience in business and financial
matters as to be capable of evaluating  the merits and risks of an investment in
shares of Parent Common Stock and protecting its own interest in connection with
the investment in such shares.


                                   ARTICLE IV.

                            REPRESENTATIONS OF PARENT

     To  induce  the  Contributing  Parties  to enter  into this  Agreement  and
consummate the transactions  contemplated hereby, Parent represents and warrants
such persons as follows:

     4.1 DUE  ORGANIZATION.  Parent is a  corporation  duly  organized,  validly
existing and in good  standing  under the laws of the State of Delaware,  and is
duly  authorized  and  qualified  to do  business  under  all  applicable  laws,
regulations,  ordinances  and  orders  of public  authorities  to carry on their
respective  businesses in the places and in the manner as now conducted.  Copies
of the Certificate of Incorporation and the Bylaws,  each as amended,  of Parent
(collectively,  the "Parent Charter  Documents") have been made available to the
Contributing Parties. Parent is not in violation of any Parent Charter Document.

     4.2 AUTHORIZATION;  VALIDITY OF OBLIGATIONS.  The representatives of Parent
executing  this Agreement  have all requisite  corporate  power and authority to
enter into and bind Parent to the terms of this  Agreement,  Parent has the full
legal right, power and corporate  authority to enter into this Agreement and the
transactions  contemplated  hereby. The execution and delivery of this Agreement
by Parent and the performance by each of Parent of the transactions contemplated
herein  have been duly and  validly  authorized  by the  Board of  Directors  of
Parent, and this Agreement has been duly and validly authorized by all necessary
corporate  action.  This Agreement is a legal,  valid and binding  obligation of
Parent, enforceable in accordance with its terms.


                                      - 6 -

<PAGE>



     4.3  NO  CONFLICTS.  The  execution,   delivery  and  performance  of  this
Agreement,  the consummation of the transactions  herein contemplated hereby and
the fulfillment of the terms hereof will not:

         (a)  conflict  with,  or result in a breach or  violation of the Parent
Charter Documents;

         (b) subject to compliance  with any  agreements  between Parent and its
lenders,  conflict  with, or result in a default (or would  constitute a default
but for a  requirement  of notice or lapse of time or both) under any  document,
agreement  or other  instrument  to which  Parent  is a party,  or result in the
creation or imposition  of any lien,  charge or  encumbrance  on any of Parent's
properties  pursuant to (i) any law or  regulation to which either Parent or any
of its  property  is  subject,  or (ii) any  judgment,  order or decree to which
Parent is bound or any of its property is subject;

         (c) result in  termination  or any  impairment of any material  permit,
license, franchise, contractual right or other authorization of Parent; or

         (d) violate  any law,  order,  judgment,  rule,  regulation,  decree or
ordinance to which Parent is subject,  or by which Parent is bound,  (including,
without  limitation,  the HSR Act,  together  with  all  rules  and  regulations
promulgated thereunder).

     4.4  CAPITALIZATION OF PARENT AND OWNERSHIP OF PARENT STOCK. The authorized
capital  stock of Parent  consists of  6,000,000  shares of Common  Stock and no
shares of  Preferred  Stock.  No shares of Parent  Common Stock and no shares of
Preferred  Stock  were  outstanding  on the date of this  Agreement.  All of the
shares of Parent  Common Stock to be issued to the  Stockholders  in  accordance
herewith  will be offered,  issued,  sold and  delivered by Parent in compliance
with all applicable state and federal laws concerning the issuance of securities
and none of such  shares was or will be issued in  violation  of the  preemptive
rights of any stockholder of Parent.  The Parent Common Stock  constituting  the
Consideration is duly  authorized,  validly issued,  fully paid,  non-assessable
and,  as of  the  Closing,  free  and  clear  of all  Liens  (other  than  liens
specifically contemplated herein).


                                      - 7 -

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                                   ARTICLE V.

                                    COVENANTS

     5.1 COOPERATION.

         (a) The Contributing  Parties and Parent shall each deliver or cause to
be  delivered  to the other on the  Closing  Date,  and at such other  times and
places as shall be  reasonably  agreed  to,  such  instruments  as the other may
reasonably request for the purpose of carrying out this Agreement.

         (b) Each party  hereto shall  cooperate  in obtaining  all consents and
approvals required under this Agreement to effect the transactions  contemplated
hereby.

     5.2  NOTIFICATION OF CERTAIN  MATTERS.  Each party hereto shall give prompt
notice to the other parties  hereto of (a) the occurrence or  non-occurrence  of
any event the occurrence or non-occurrence of which would be likely to cause any
representation  or warranty of it contained herein to be untrue or inaccurate in
any material  respect at or prior to the Closing and (b) any material failure of
such party to comply with or satisfy any covenant,  condition or agreement to be
complied with or satisfied by such party  hereunder.  The delivery of any notice
pursuant to this Section 5.3 shall not,  without the express  written consent of
the other  parties  be deemed to (x) modify the  representations  or  warranties
hereunder of the party  delivering  such notice,  (y) modify the  conditions set
forth in  Articles  VI and VII, or (z) limit or  otherwise  affect the  remedies
available hereunder to the party receiving such notice.

     5.3 TERMINATION OF CERTAIN AGREEMENTS.  From and after the date hereof, the
agreements  listed on Schedule 5.3 are no longer of any force or effect  (except
to the extent that such termination is limited on Schedule 5.3).

     5.4 AMENDMENT OF  REGISTRATION  RIGHTS.  Realty  Information  Group,  L.P.,
Realty Information Group, Inc.,  Founders/RIG,  L.L.C., Law Bulletin  Publishing
Company and RIG Holdings,  LLC are parties to that certain  Registration  Rights
Agreement,  dated December 3, 1996 (the "Registration  Rights  Agreements"),  as
amended  from time to time.  The parties to the  Registration  Rights  Agreement
hereby agree that, effective upon the closing of the IPO:

         (a) the first  sentence of Section  2.(a) of that  agreement  is hereby
amended and restated as follows: "At any time after six months after the closing
of the initial  public  offering for stock of the company  that  succeeds to the
assets and liabilities of the Company and the General  Partner,  any one or more
of Allen LLC, Founders LLC and/or the successors thereto holding,  in aggregate,
at least 20 percent of the  interests  owned by such  entities as of December 3,
1996, may request that the Company  effect a  Registration  under the Securities
Act of all or part of its  Registrable  Securities  on Form  S-1 or any  similar
long-form Registration (a


                                      - 8 -

<PAGE>



'Long-Form  Demand  Registration')  or on  Form  S-3 or any  similar  short-form
Registration (a 'Short-Form Demand Registration'), if available."

         (b) the first  sentence of Section  2.(c) of that  agreement  is hereby
amended and restated as follows:  "The  Company  shall not be required to effect
more than one Demand Registration pursuant to this Section 2."


                                   ARTICLE VI.

                       CONDITIONS PRECEDENT TO OBLIGATIONS
                                    OF PARENT

     The obligation of Parent to effect the transactions  contemplated hereby is
subject  to the  satisfaction  or  waiver,  at or  before  the  Closing,  of the
following conditions and deliveries:

     6.1 NO LITIGATION. No temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction or other
legal or  regulatory  restraint or provision  challenging  the  Transaction,  or
limiting or restricting  Parent's conduct or operation of the business of RIGINC
or RIGLP (or its own business)  following the transactions  contemplated  hereby
shall be in effect, nor shall any proceeding brought by an administrative agency
or commission or other governmental  authority or  instrumentality,  domestic or
foreign, seeking any of the foregoing be pending.

     6.2 CONSENTS AND  APPROVALS.  All necessary  consents of, and filings with,
any  governmental   authority  or  agency  or  third  party,   relating  to  the
consummation  by  the  Contributing  Parties  of the  transactions  contemplated
hereby, shall have been obtained and made.

     6.3  REGISTRATION  STATEMENT.  The  Registration  Statement shall have been
declared  effective by the Securities and Exchange  Commission ("SEC") not later
than June 30,  1998 and the  underwriters  named  therein  shall have  agreed to
acquire,  subject to the conditions set forth in the underwriting agreement, the
shares of Parent Stock covered by such Registration Statement.

     6.4 IPO. The board of RIGINC  shall have  approved of the  organization  of
Parent and the RIG  Contributions  to  faciliate  the IPO,  and the IPO shall be
consummated simultaneously herewith or immediately hereafter.

     6.5 TENDER.  All of the capital stock of RIGINC and all of the  partnership
units of RIGLP (other than the units owned by RIGINC)  shall have been  tendered
to Parent.


                                      - 9 -

<PAGE>


                                  ARTICLE VII.

                   CONDITIONS PRECEDENT TO OBLIGATIONS OF THE
                              CONTRIBUTING PARTIES

     The  obligation  of the  Contributing  Parties to effect  the  transactions
contemplated  hereby are subject to the satisfaction or waiver, at or before the
Closing, of the following conditions and deliveries:

     7.1 NO LITIGATION. No temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction or other
legal  or  regulatory  restraint  or  provision  challenging  Parent's  proposed
acquisition  by  Parent  of  the  Contributing   Stockholders'   shares  or  the
Contributing  Partners'  units, or limiting or restricting  Parent's  conduct or
operation of the business of RIGINC or RIGLP (or its own business) following the
transactions  contemplated  hereby shall be in effect,  nor shall any proceeding
brought  by  an  administrative  agency  or  commission  or  other  governmental
authority or instrumentality,  domestic or foreign, seeking any of the foregoing
be pending.  There shall be no action,  suit,  claim or proceeding of any nature
pending or threatened,  against Parent, its properties or any of its officers or
directors,  that could  materially  and adversely  affect the business,  assets,
liabilities,  financial  condition,  results of  operations  or prospects of the
Parent and its subsidiaries taken as a whole.

     7.2 CONSENTS AND  APPROVALS.  All necessary  consents of, and filings with,
any governmental authority or agency or third party relating to the consummation
by Parent of the transactions  contemplated herein, shall have been obtained and
made.

     7.3  REGISTRATION  STATEMENT.  Parent  shall  have  filed  with the SEC the
Registration  Statement.  The  Registration  Statement  shall have been declared
effective  by the SEC not later than June 30,  1998 and the  underwriters  named
therein shall have agreed to acquire, subject to the conditions set forth in the
underwriting  agreement,  the  shares of Parent  Common  Stock  covered  by such
Registration Statement.

     7.4 IPO. The board of RIGINC  shall have  approved of the  organization  of
Parent and the RIG  Contributions  to  faciliate  the IPO,  and the IPO shall be
consummated simultaneously herewith or immediately hereafter.

     7.5 LEGAL OPINION.  The Contributing Parties shall have received an opinion
of  Wilmer,  Cutler &  Pickering,  counsel to  Parent,  to the  effect  that the
Transaction  is a transaction  described in Section 351 of the Internal  Revenue
Code of 1986, as amended,  and the Contributing  Parties will not recognize gain
on the exchange of Shares and Units solely in exchange for Parent Stock.


                                     - 10 -

<PAGE>



                                  ARTICLE VIII.

                                     GENERAL

     8.1 TERMINATION.  This Agreement may be terminated at any time prior to the
Closing Date solely:

         (a) by mutual  consent  of the  board of  directors  of Parent  and the
Owners' Representative; or

         (b) by the board of directors of Parent or the Owners'  Representative,
if the Closing shall not have occurred on or before May 10, 1998; or

         (c) by the board of directors of Parent or the Owners'  Representative,
if there is or has been a material breach,  failure to fulfill or default on the
part of the other party of any of the representations  and warranties  contained
herein  or in the due and  timely  performance  and  satisfaction  of any of the
covenants,  agreements or conditions  contained  herein,  and the curing of such
default  shall not have been made or shall not  reasonably  be expected to occur
before the Closing Date; or

         (d) by the board of directors of Parent or the Owners'  Representative,
if there  shall be a final  nonappealable  order of a federal or state  court in
effect preventing consummation of the transactions contemplated hereby; or there
shall be any action taken,  or any statute,  rule  regulation or order  enacted,
promulgated  or issued or deemed  applicable  to the  transactions  contemplated
hereby by any  governmental  entity  which  would make the  consummation  of the
transactions contemplated hereby illegal.

     8.2  EFFECT  OF  TERMINATION.  In the  event  of the  termination  of  this
Agreement  pursuant to Section  10.1,  this  Agreement  shall  forthwith  become
ineffective,  and there shall be no liability or  obligation  on the part of any
party hereto or its officers,  directors or  shareholders.  Notwithstanding  the
foregoing sentence, (i) the provisions of this Section 8.2, shall remain in full
force and effect and survive any termination of this Agreement;  (ii) each party
shall remain liable for any breach of this Agreement  prior to its  termination;
and (iii) in the event of  termination  of this  Agreement  pursuant  to Section
8.1(c) above, then the breaching party shall be liable to the other party to the
extent of the  expenses  incurred  by such other party in  connection  with this
Agreement and the transactions  contemplated  hereby,  as well as any damages in
accordance with applicable law.

     8.3  SUCCESSORS  AND ASSIGNS.  This Agreement and the rights of the parties
hereunder may not be assigned  (except by operation of law) and shall be binding
upon and shall inure to the benefit of the parties  hereto,  the  successors  of
Parent, and the heirs and legal representatives of the Contributing Parties.


                                     - 11 -

<PAGE>



     8.4 ENTIRE  AGREEMENT;  AMENDMENT;  WAIVER.  This  Agreement sets forth the
entire  understanding  of the parties  hereto with  respect to the  transactions
contemplated  hereby.  Each of the Schedules to this  Agreement is  incorporated
herein by this reference and expressly made a part hereof.  Any and all previous
agreements and understandings between or among the parties regarding the subject
matter hereof,  whether written or oral, are superseded by this Agreement.  This
Agreement shall not be amended or modified  except by a written  instrument duly
executed by each of the parties  hereto,  or in accordance with Section 8.5. Any
extension or waiver by any party of any provision  hereto shall be valid only if
set forth in an instrument in writing signed on behalf of such party.

     8.5  COUNTERPARTS.  This  Agreement  may  be  executed  in  any  number  of
counterparts  and any party  hereto may  execute any such  counterpart,  each of
which when executed and delivered shall be deemed to be an original,  and all of
which  counterparts  taken  together  shall  constitute  but one  and  the  same
instrument.

     8.6 BROKERS AND AGENTS.  Parent and each Contributing  Party represents and
warrants to the other that it has not employed any broker or agent in connection
with the transactions contemplated by this Agreement and agrees to indemnify the
other  against  all losses,  damages or  expenses  relating to or arising out of
claims for fees or commission of any broker or agent employed or alleged to have
been employed by such party.

     8.7 NOTICES. Any notice, request, claim, demand, waiver, consent,  approval
or other  communication  which is required or  permitted  hereunder  shall be in
writing and shall be deemed  given if  delivered  personally  or sent by telefax
(with  confirmation  of  receipt),  by  registered  or certified  mail,  postage
prepaid, or by recognized courier service, as follows:

         (a)      If to Parent to:

                  Andrew C. Florance
                  President
                  Realty Information Group
                  7475 Wisconsin Avenue
                  Sixth Floor
                  Bethesda, Maryland 20814
                  (Telefax: (301) 718-2444)

                  with a required copy to:


                                     - 12 -

<PAGE>



                  Wilmer, Cutler & Pickering
                  2445 M Street, N.W.
                  Washington, D.C. 20037
                  Attn: Eric R. Markus, Esq.
                  (Telefax: (202) 663-6363)

         (b) If to any  Contributing  Party,  to the  address  shown on  Exhibit
8.7(b);

or to such other  address  as the person to whom  notice is to be given may have
specified in a notice duly given to the sender as provided herein.  Such notice,
request, claim, demand, waiver,  consent,  approval or other communication shall
be deemed to have been given as of the date so delivered,  telefaxed,  mailed or
dispatched  and, if given by any other  means,  shall be deemed  given only when
actually received by the addressees.

     8.8 GOVERNING LAW.

         (a) This Agreement shall be governed by and construed,  interpreted and
enforced in accordance with the laws of Delaware.

         (b) Any disputes  arising out of, in connection with or with respect to
this Agreement, the subject matter hereof, the performance or non-performance of
any  obligation  hereunder,  or  any  of the  transactions  contemplated  hereby
("Disputes")  that seek specific  performance  of any  obligations  hereunder or
injunctive   relief  shall  be  adjudicated  in  a  court  of  competent   civil
jurisdiction  sitting in  Wilmington,  Delaware,  and nowhere else.  Each of the
parties hereto hereby irrevocably  submits to the jurisdiction of such court for
the purposes of any suit,  civil action or other  proceeding  arising out of, in
connection  with or with respect to this  Agreement,  the subject matter hereof,
the performance or  non-performance of any obligation  hereunder,  or any of the
transactions  contemplated hereby  (collectively,  "Suit").  Each of the parties
hereto hereby waives and agrees not to assert by way of motion,  as a defense or
otherwise in any such Suit, any claim that it is not subject to the jurisdiction
of the above courts, that such Suit is brought in an inconvenient forum, or that
the venue of such Suit is improper.

         (c) Except as  provided  in Section  10.10(b),  all  Disputes  shall be
resolved  by  binding  arbitration  administered  by  the  American  Arbitration
Association  ("AAA") in Washington,  D.C. and,  except as expressly  provided in
this Agreement,  shall be conducted in accordance with the Expedited  Procedures
under the Commercial  Arbitration Rules of the AAA, as such rules may be amended
from time to time (the "Rules").

              (i) The hearing locale shall be Washington, D.C. A single, neutral
arbitrator (the "Arbitrator")  shall be appointed by the AAA, within thirty (30)
days after an Arbitrated Dispute is submitted for arbitration under this Section
10.10(c),  to  preside  over  the  arbitration  and  resolve  the  Dispute.  The
Arbitrator  shall be  selected  from the AAA's  Commercial  Panel,  and shall be
qualified to practice law in at least one jurisdiction in the United States and

                                     - 13 -

<PAGE>



have expertise in the interpretation of commercial contracts.  The parties shall
have ten (10) days to object in writing to the  appointment  of the  Arbitrator,
the sole basis for such objection being an actual conflict of interest. The AAA,
in its sole discretion, shall determine within ten (10) days the validity of any
objection to the  appointment of the Arbitrator  based on an actual  conflict of
interest.

              (ii) The Arbitrator's  decision (the "Decision") shall be binding,
and the  prevailing  party may  enforce the  Decision in any court of  competent
jurisdiction.

              (iii) The parties  shall use their best efforts to cooperate  with
each other in causing the arbitration to be held in as efficient and expeditious
a manner as practicable,  including but not limited to, providing such documents
and making  available such of their personnel as the Arbitrator may request,  so
that the Decision may be reached timely.  The Arbitrator shall take into account
the parties'  stated goal of expedited  proceedings  in  determining  whether to
authorize  discovery  and, if so, the scope of  permissible  discovery and other
hearing and pre-hearing procedures.

              (iv) The authority of the Arbitrator  shall be limited to deciding
liability for, and the proper amount of, a Claim,  and the Arbitrator shall have
no authority to award punitive  damages.  The Arbitrator  shall have such powers
and establish such  procedures as are provided for in the Rules, so long as such
powers and procedures are consistent  with this Section 8.8(c) and are necessary
to resolve the Dispute within the time periods specified in this Agreement.  The
Arbitrator  shall render a Decision within sixty (60) days after being appointed
to serve as  Arbitrator,  unless the parties  otherwise  agree in writing or the
Arbitrator  makes a finding  that a party has carried the burden of showing good
cause for a longer period.

     8.9  SEVERABILITY.  If any provision of this  Agreement or the  application
thereof to any person or  circumstances  is held invalid or unenforceable in any
jurisdiction,  the remainder  hereof,  and the  application of such provision to
such person or  circumstances in any other  jurisdiction,  shall not be affected
thereby, and to this end the provisions of this Agreement shall be severable.

     8.10  ABSENCE OF THIRD  PARTY  BENEFICIARY  RIGHTS.  No  provision  of this
Agreement is intended,  nor will any provision be interpreted,  to provide or to
create any third party beneficiary rights or any other rights of any kind in any
client,  customer,  affiliate,  shareholder,  employee  or  partner of any party
hereto or any other person or entity.

     8.11 FURTHER  REPRESENTATIONS.  Each party  further  represents  that it is
being  independently  advised  as to the tax  consequences  of the  transactions
contemplated  by this  Agreement  and is not  relying on any  representation  or
statements made by the other party as to such tax consequences.


                                     - 14 -

<PAGE>


     8.12 EFFECTIVENESS OF REPRESENTATIONS  WARRANTIES.  All representations and
warranties  made by the  Contributing  Parties and Parent in or pursuant to this
Agreement or in any document  delivered  pursuant hereto shall be deemed to have
been made on the date of this Agreement  (except as otherwise  provided  herein)
and, if a Closing occurs, as of the Closing Date.

                           [EXECUTION PAGE FOLLOWING]


                                     - 15 -

<PAGE>



     IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as of
the day and year first above written.


REALTY INFORMATION GROUP,
INC.


BY:________________________________



                         STOCKHOLDERS OF OLD RIG, INC.:

----------------------------------            ----------------------------------
MICHAEL R. KLEIN                              DAVID BONDERMAN


----------------------------------            ----------------------------------
ANDREW C. FLORANCE                            WARREN H. HABER                   


----------------------------------            ----------------------------------
DON CARLIN                                    COLDEN FLORANCE                   


----------------------------------            ----------------------------------
WENDY FLORANCE                                JOHN D. WHITE                     


----------------------------------
JOHN L. TEEGER




               LIMITED PARTNERS OF REALTY INFORMATION GROUP, L.P.:

                                           
----------------------------------            ---------------------------------- 
HOROWITZ LIMITED PARTNERSHIP I                FOUNDERS/RIG, L.L.C.               


----------------------------------            ----------------------------------
MICHAEL R. KLEIN                              LAW BULLETIN PUBLISHING COMPANY   


----------------------------------            ----------------------------------
MICHAEL R. KLEIN AND/OR STEPHANIE KLEIN,      MICHAEL R. KLEIN AND/OR STEPHANIE KLEIN,
AS CUSTODIAN FOR SARAH KLEIN                  AS CUSTODIAN FOR HANNAH KLEIN





                                     - 16 -

<PAGE>



----------------------------------            ----------------------------------
PETER KLEIN AND/OR ROY FABRY, AS TRUSTEE      ROY VICTOR FABRY                  
FOR NICHOLAS KLEIN


----------------------------------            ----------------------------------
PETER KLEIN AND/OR ROY FABRY, AS TRUSTEE      DAVID SCHAFFEL                    
FOR ALEXANDER KLEIN                           


----------------------------------            ----------------------------------
LANNING MACFARLAND III                        BREWSTER J. MACFARLAND            
                                              

----------------------------------            ----------------------------------
JEFFREY L. BOPE                               RIG HOLDINGS, L.L.C.              
                                              

----------------------------------            ----------------------------------
CRAIG BROWN                                   KERIN GARRETT                     
                                              

----------------------------------            ----------------------------------
NELLA SHAPIRO                                 JAMES D. CARR                     
                                              





                                     - 17 -

<PAGE>



                                  SCHEDULE 5.3

                        TERMINATION OF CERTAIN AGREEMENTS

Agreement                                                     Extent of Survival
---------                                                     ------------------

Investors' Agreement, dated December 3, 1996, by and          None.
among Realty Information Group, Inc., Realty Information
Group, L.P., Michael R. Klein, Andrew Florance, Law
Bulletin Publishing Company, Founders/RIG, L.L.C. and
RIG Holdings, L.L.C.

Agreement Relating to Investments in Realty Information       None.
Group, Inc. and Its Affiliated Limited Partnership by
Founders Equity, Inc. and A Group of Co-Investors, dated
May 15, 1995

Agreement Relating to the Acquisition by Realty               None.
Information Group, L.P. of Substantially all the Assets and
Liabilities of Chicago Re-Source, a Division of Law
Bulletin Publishing Company and the Investment by Law
Bulletin Publishing Company in Units of Realty
Information Group, L.P., including attached Schedules,
dated March 29, 1996

Purchase Agreement, dated December 3, 1996, by and            None.
among Realty Information Group, Inc., Realty Information
Group, L.P., and RIG Holdings, L.L.C.

Purchase Agreement dated December 3, 1996, by and             None.
among Realty Information Group Inc., Realty Information
Group, L.P., Founders/RIG, L.L.C., and Founders Equity,
Inc.

Purchase Agreement dated December 3, 1996, by and             None.
among Realty Information Group, Inc., Realty Information
Group, L.P., Law Bulletin Publishing Company, Inc.,
Jeffrey Bope, Lanning Macfarland III, and Brewster
Macfarland.

Agreement, dated December 2, 1994, by and among               None.
Michael R. Klein and the Horowitz Limited Partnership I.


                                      - i -

<PAGE>




                                                           
Limited Partnership Agreement of Realty Information           All provisions survive except   
Group, L.P., effective as of the August 9, 1994, as amended   that ss. 7.8 (Put and Call) and 
on or about May 15, 1995                                      the two provisions of           
                                                              ss. 10.2(b)(iv) terminate.      



                                    - ii -

Source: OneCLE Business Contracts.