The printed portions of this form, except (italiceed)
                           (differentiated)  additions, have  been  approved  by
                           the Colorado Real Estate Commission (CBS2-7-96)
KELLER WILLIAMS
 R   E   A   L   T    Y, LLC

     THIS FORM HAS IMPORTANT LEGAL CONSEQUENCES AND THE PARTIES SHOULD CONSULT
     LEGAL AND TAX OR OTHER COUNSEL BEFORE SIGNING


                                                           Date January 16, 1997


1. PARTIES AND PROPERTY.  Commercial  Acquisitions  Corporation  and/or assiqns,
buyer(s) [Buyer] agrees to buy, and the undersigned seller(s) [Seller] agrees to
sell, on the terrns and  conditions  set forth in this  contract,  the following
described real estate in the County of Denver , Colorado, to wit:

Lots 16-19, Block 27, Park Avenue Addition, County of Denver, State of Colorado

known as No. 1325 East 16th Avenue Denver. CO 80218 (address)
together  with all  interest of Seller in vacated  streets  and alleys  adjacent
thereto, all easements and other appurtenances thereto, all improvements thereon
and all attached fixtures thereon,  except as herein excluded  (co11ectively the
Property).

2. INCLUSIONS / EXCLUSIONS.  The purchase price includes the following items (a)
if attached to the  Property on the date of this  contract:  lighting,  heating,
plumbing,  ventilating,  and  air  conditioning  fixtures,  TV  antennas,  water
softeners,  smoke/ fire/ burglar  alarms,  security  devices,  inside  telephone
wiring and connecting blocks/jacks,  plants, mirrors, floor coverings,  intercom
systems, built-in kitchen appliances,  sprinkler systems and controls; (b) if on
the  Property  whether  attached  or not on the  date  of this  contract:  storm
windows, stormdoors,  window and porch shades, awnings, blinds, screens, curtain
rods,  drapery rods, all keys and (c) All personal and real property,  excluding
trade  fixtures,  currentlv  on  premesis  and  used  in the  operations  and/or
management  of  said  real   pronertv.   The   above-described   included  items
(Inclusions)  are to be  conveyed  to  Buyer  by  Seller  by bill of sale at the
closing, free and clear of all taxes, liens and encumbrances, except as provided
in Section 12. The following attached fixtures are excluded from this sale: None

3. PURCHASE PRICE AND TERMS.  The purchase price shall be $ 465,000.00,  payable
in U.S. dollars by Buyer as follows: (Complete the applicable terms below.)

     (a) EARNEST MONEY.
$5,000.00 in the form of a promissory  note,as  earnest  money  deposit and part
payment of the purchase price,  payable to and held by Midtown Real  Properties,
broker,in its  trust  accunt on behalf  of both  Seller  and  Buyer.  Broker is
authorized to deliver the earnest money deposit to the closing agent, if any, at
or before closing.

The balance of $ 460,000.00 (purchase price less earnest money) shall be paid as
follows:
     (b) CASH AT CLOSING.
$ 45,000.00 , plus closing costs,  to be paid by Buyer at closing in funds which
comply  with all  applicable  Colorado  laws,  which  include  cash,  electronic
transfer funds, certified check, savings  and loan teller's check, and cashier's
check (Good Funds). Subject to the provisions of Section 4, if the existing loan
balance  at the time of  closing  shall be  different  from the loan  balance in
Section  3, the  adjustment  shall be made in Good  Funds at  closing or paid as
follows: N/A.



[The  printed  portions  of  this  form,  except  (italicized)  (differentiated)
additions,   have  been  approved  by  the  Colorado   Real  Estate   Commission
(CBS2-9-95)]

     (c) NEW LOAN.
$ 335,000.00 by Buyer obtaining a new loan.

     This loan will be secured by a        First           deed of trust.
                                      (1st, 2nd, etc.)
     The loan shall be amortized  over a period of 30 years at  approximately  $
2,695.49 per month including principal and interest not to exceed 9 % per annum,
plus, if required by Buyer's lender,  a monthly deposit of 1/12 of the estimated
annual real estate taxes,  property  insurance  premium,  and mortgage insurance
premium.  If the loan is an adjustable  interest rate or graduated payment loan,
the monthly  payments and interest rate  initially  shall not exceed the figures
set forth above.
     Loan discount points,  if any, shall be paid to lender at closing and shall
not exceed O % of the total loan  amount.  Notwithstanding  the loan's  interest
rate,  the first O loan discount  points shall be paid by N/A , and the balance,
if any, shall be paid by N/A .
     Buyer shall timely pay a loan origination fee not to exceed 1 % of the loan
amount and Buyer's loan costs.

[Text here has been manually crossed out]

4.  FINANCING CONDITIONS AND OBLIGATIONS:
     (a) LOAN  APPLICATION(S).  If  Buyer is to pay all or part of the  purchase
price as set forth in Section 3 by  obtaining a new loan or if an existing  loan
is not to be released at closing,  Buyer, if required by such lender, shall make
written  application  within 10 calendar  days from acceptance of this contract.
Buyer shall cooperate with Seller and lender to obtain loan approval, diligently
and timely  pursue same in good faith,  execute  all  documents  and furnish all
information  and documents  required by the lender,  and,  subject to Section 3,
timely pay the costs of obtaining such loan or lender consent.
     (b) LOAN APPROVAL.  If Buyer is to pay all or part of the purchase price by
obtaining a new loan as  specified  in Section 3, this  contract is  conditional
upon lender's approval of the new loan on or before February 20, 1997. If not so
approved by said date, this contract shall terminate.

[Text here has been manually crossed out]

     5. APPRAISAL PROVISION.  (Check only one box.) This Section 5 [X] shall [ ]
shall not apply.
     If this Section 5 applies,  as indicated  above,  Buyer shall have the sole
option and election to terminate this contract if the purchase price exceeds the
Property's  valuation determined by an appraiser engaged by Buyer's lender . The
contract  shall  terminate  by the Buyer  causing the Seller to receive  written
notice of termination and a copy of such appraisal or written notice from lender
which confirms the Property's  valuation is less than the purchase  price, on or
before February 20, 1997 , (Appraisal Deadline). If Seller does not receive such
written notice of termination on or before the appraisal deadline,  Buyer waives
any right to terminate under this section.

6. COST OF APPRAISAL. Cost of any appraisal to be obtained after to date of this
contract shall be timely paid by Buyer.

7. ASSIGNABLE. This contract shall be assignable by Buyer without Seller's prior
written consent. This contract shall inure to the benefit of and be binding upon
the heirs, personal represenatives, successors and assigns of the parties.

8. EVIDENCE OF TITLE.  Seller shall  furnish to Buyer,  at Seller's  expense,  a
current  commitment for owner's title insurance policy in an amount equal to the
purchase price on or before January 27, 1997 (Title Deadline). Buyer may require
of Seller that copies of instruments (or abstracts of instruments) listed in the
schedule of exceptions  (Exceptions) in the title  insurance  commitment also be
furnished to Buyer at Seller's  Expense.  This requirement shall pertain only to
instruments  shown of record in the  office  of the  clerk and  recorder  of the
designated county or counties. The title insurance commitment, together with any


[The  printed  portions  of  this  form,  except  (italicized)  (differentiated)
additions,   have  been  approved  by  the  Colorado   Real  Estate   Commission
(CBS2-9-95)]

copies or  abstracts  of  instruments  furnished  pursuant  to this  Section  8,
constitute the title documents  (Title  Documents).  Buyer, or Buyer's designee,
must request Seller , in writing,  to furnish copies or abstracts of instruments
listed in the schedule of  exceptions  no later than 7 calendar days after Title
Deadline.  Seller will pay the  premium at closing and have the title  insurance
policy delivered to Buyer as soon as practicable after closing.

9.  TITLE.
     (a)  TITLE  REVIEW.  Buyer  shall  have the  right  to  inspect  the  Title
Documents. Written notice by Buyer of unmerchantability of title or of any other
unsatisfactory  title  condition shown by the Title Documents shall be signed by
or on behalf of Buyer and  given to Seller on or before 7  calendar  days  after
Title Deadline,  or with in five (5) calendar days after receipt by Buyer of any
Title  Document(s)  or  endorsement(s)  adding  new  Exceptions(s)  to the title
commitment together with a copy of the Title Document adding new Exception(s) to
title. If Seller does not receive Buyer's notice by the date(s) specified above,
Buyer  accepts the  condition of title as  disclosed  by the Title  Documents as
satisfactory.
     (b) MATTERS NOT SHOWN BY THE PUBLIC RECORDS. Seller shall deliver to Buyer,
on or before  the Title  Deadline  set forth in  Section  8, true  copies of all
lease(s) and  survey(s) in Seller's  possession  pertaining  to the Property and
shall disclose to Buyer all easements, liens or other title matters not shown by
the public  records of which Seller has actual  knowledge.  Buyer shall have the
right to inspect the Property to  determine if any third  party(s) has any right
in the Property not shown by the public records (such as an unrecorded easement,
unrecorded  lease,  or  boundary  line  discrepancy).   Written  notice  of  any
unsatisfactory  condition(s)  disclosed by Seller or revealed by such inspection
shall be  signed  by or on  behalf  of Buyer  and  givern to Seller on or before
January 27, 1997. If Seller does not receive Buyer's notice by said date,  Buyer
accepts  title  subject to such rights,  if any, of third parties of which Buyer
has actual knowledge.
     (C) SPECIAL TAXING  DISTRICTS.  SPECIAL TAXING  DISTRICTS MAY BE SUBJECT TO
GENERAL  OBLIGATION  INDEBTEDNESS THAT IS PAID BY REVENUES PRODUCED FROM ANNUAL
TAX LEVIES ON THE TAXABLE  PROPERTY  WITHIN SUCH  DISTRICTS.  PROPERTY OWNERS IN
SUCH DISTRICTS MAY BE PLACED AT RISK FOR INCREASED MILL LEVIES AND EXCESSIVE TAX
BURDENS  TO  SUPPORT  THE  SERVICING  OF SUCH  DEBT  WHERE  CIRCUMSTANCES  ARISE
RESULTING IN THE  INABILITY OF SUCH A DISTRICT TO  DISCHARGE  SUCH  INDEBTEDNESS
WITHOUT  SUCH AN INCREASE IN MILL  LEVIES.  BUYER  SHOULD  INVESTIGATE  THE DEBT
FINANCING REQUIREMENTS OF THE AUTHORIZED GENERAL OBLIGATION INDEBTEDNESS OF SUCH
DISTRICTS,  EXISTING MILL LEVIES OF SUCH DISTRICT  SERVICING SUCH  INDEBTEDNESS,
AND THE POTENTIAL FOR AN INCREASE IN SUCH MILL LEVIES.
     In the event the Property is located with in a special taxing  district and
Buyer desires to terminate this contract as a result, if written notice is given
to Seller on or before  the date set forth in  subsection  9(b),  this  contract
shall then  terminate.  If Seller  does not receive  Buyer's  notice by the date
specified  above, Buyer accepts the effect of the  Property's  inclusion in such
special taxing district(s) and waives the right to so terminate.
     (d) RlGHT TO CURE. If Seller receives notice of  unmerchantability of title
or any other  unsatisfadory  title condition(s) as provided in subsection (a) or
(b) above,  Seller shall use  reasonable  effort to correct said  unsatisfactory
title condition(s) prior to the date of closing. If Seller fails to correct said
unsatisfactory title condition(s) on or before the date of closing this contract
shall then terminate; provided, however,Buyer may, by written notice received by
Seller  on or before  closing,  waive  objection  to said  unsatisfactory  title
condition(s).

10. INSPECTION. Buyer or any designee, shall have the right to have inspecton(s)
of the physical condition of the Property and Inclusions, at Buyer's expense. If
written notice of any unsatisfactory condition, signed by or on behalf of Buyer,
is not received by Seller on or before February 20, 1997  (Objection  Deadline),
the physical  condition of the  Property  and  Inclusions  shall be deemed to be
satisfactory  to Buyer. If such notice is received by Seller as set forth above,
and if Buyer and Seller have not agreed,  in writing, to a settlement thereof on


[The  printed  portions  of  this  form,  except  (italicized)  (differentiated)
additions,   have  been  approved  by  the  Colorado   Real  Estate   Commission
(CBS2-9-95)]

or before February 24, 1997 (Resolution Deadline), this contract shall terminate
three calendar days following the Resolution Deadline;  unless, within tne three
calendar days,  Seller receives  written notice from Buyer waiving  objection to
any  unsatisfactory  condition.  Buyer is responsible  for and shall pay for any
damage  which  occurs  to tbe  Property  and  Inclusions  as a  result  of  such
inspection.

11.  DATE OF CLOSING.  The date of closing  shall be February  28,  1997,  or by
mutual  agreement at an earlier date. The hour and place of closing  shall be as
designated by Midtown Real Properties.

12.  TRANSFER  OF TITLE.  Subject to tender or  payment  at closing as  required
herein and  compliance  by Buyer  with the other  terms and  provisions  hereof,
Seller shall execute and deliver a good and sufficient  General Warrantv deed to
Buyer, on closing, conveying the Property free and clear of all taxes except the
general  taxes for the year of  closing,  and except  Denver Wa s te Water Tax .
Title  shall be conveyed  free and clear of all liens for  special  improvements
installed as of the date of Buyer's signature  hereon,  whether assessed or not;
except (i)  distribution  utility  easements  (including  cable TV),  (ii) those
matters  reflected by the Title  Documents  accepted by Buyer in accordance with
subsection  9(a),  (iii) those rights,  if any, of third parties in the Property
not  shown  by the  public  records  in  accordance  with  subsection  9(b),(iv)
inclusion of the Property within any special taxing district,  and (v)subject to
building and zoning regulations.

13. PAYMENT OF ENCUMBRANCES.  Any encumbrance  required to be paid shall be paid
at or before  closing  from the proceeds of this  transaction  or from any other
source.

14. CLOSING COSTS,  DOCUMENTS AND SERVICES.  Buyer and Seller shall pay, in Good
Funds, their respective closing costs and all other items required to be paid at
closing  except as otherwise  provided  herein.  Buyer and Seller shall sign and
complete all customary or required documents at or before closing. Fees for real
estate  closing  services shall not exceed $ 300 and shall be paid at closing by
1/2 Buyer and 1/2 Seller . The local  transfer tax of O %of the  purchase  price
shall be paid at closing by N /A . Any sales and use tax that may accrue because
of this  transaction  shall be paid when due by -----------.

15.  PRORATIONS.  General taxes for the year of closing,  based on the taxes for
the calendar year immediately preceding closing, rents, water and sewer charges,
owner's  association dues, and interest on continuing  loan(s), if any, and None
Other shall be prorated to date of closing.

16.  POSSESSION.  Possession  of the  Property  shall be  delivered  to Buyer as
follows:  Upon Deliverv Of Deed subject to the following lease(s) or tenancy(s):
10 year,  NNN lease from seller to buver  detailed in  Paragragh  21. If Seller,
after closing, fails to deliver possession on the date herein specified,  Seller
shall be  subject  to  eviction  and shall be  additionally  liable to Buyer for
payment of $1,000.00 per day from the date of agreed possession until possession
is delivered.

17.  CONDITION OF AND DAMAGE TO PROPERTY.  Except as otherwise  provided in this
contract,  the Property  and  Inclusions  shall be  delivered  in the  condition
existing as of the date of this contract,  ordinary wear and tear  excepted.  In
the event the Property  shall be damaged by fire or other casualty prior to time
of  closing,  in an amount of not more than ten  percent  of the total  purchase
price,  Seller shall be obligated to repair the same before the date of closing.
In the event such  damage is not  repaired  within  said time or if the  damages
exceed such sum, this contract may be terminated at tbe option of Buyer.  Should
Buyer  elect to carry out this  contract  despite  such  damage,  Buyer shall be
entitled to credit for all the insurance  proceeds resulting from such damage to
the Property and Inclusions,  not exceeding,  however, the total purchase price.
Should any  Inclusion(s)  or service(s)  fail or be damaged  between the date of
this  contract  and the date of  closing or the date of  possession,  which ever



[The  printed  portions  of  this  form,  except  (italicized)  (differentiated)
additions,   have  been  approved  by  the  Colorado   Real  Estate   Commission
(CBS2-9-95)]


shall be earlier,  then Seller shall be liable for the repair or  replacement of
such Inclusion(s) or service(s) with a unit of similar size, age end quality, or
an equivalent  credit,  less any insurance  proceeds  received by Buyer covering
such repair or replacement.

18.  TIME OF  ESSENCE/REMEDIES.  Time is of the essence  hereof.  If any note or
check received as earnest money  hereunder or any other payment due hereunder is
not paid, honored or tendered when due, or if any other obligation  hereunder is
not  performed  or waived  as  herein  provided,  there  shall be the  following
remedies:
           (a) IF BUYER IS IN DEFAULT:
           [Check one box only]
[ ]        (1) SPECIFlC PERFORMANCE.  Seller may elect to treat this contract as
canceled,  in which case all  payments  and things of value  received  hereunder
shall be forfeited and retained on behalf of Seller, and Seller may recover such
damages as may be proper, or Seller may elect to treat this contract as being in
full force and effect and Seller shall have the right to specific performance or
damages, or both.
[X]        (2)  LIQUIDATED  DAMAGES.  All payments and things of value  received
hereunder  shall be forfeited by Buyer and retained on behalf of Seller and both
parties  shall  thereafter  be released from all  obligations  hereunder.  It is
agreed that such payments and things of value are LIQUIDATED DAMAGES and (except
as provided in  subsection  (c)) are  SELLER'S  SOLE AND ONLY REMEDY for Buyer's
failure to perform the obligations of this contract. Seller expressly waives the
remedies of specific performance and additional damages.
           (b) IF SELLER IS IN DEFAULT:
           Buyer may elect to treat this contract as canceled, in which case all
payments and things of value received  hereunder shall be returned and Buyer may
recover such damages as may be proper, or Buyer may elect to treat this contract
as being in full  force and effect  and Buyer  shall have the right to  specific
performance or damages, or both.
           (c)  COSTS   AND   EXPENSES.   Anything   to  the   contrary   herein
notwithstanding  in the event of any  arbitration  or litigation  arising out of
this contract,  the arbitrator or court shall award to the prevailing  party all
reasonable costs and expenses, including attorney fees.

19. EARNEST MONEY  DISPUTE.  Notwithstanding  any  termination of this contract,
Buyer and Seller  agree  that,  in the event of any  controversy  regarding  the
earnest money and things of value held by broker or closing agent, unless mutual
written  instructions are received by the holder of the earnest money and things
of value,  broker or closing  agent shall not be required to take any action but
may await any  proceeding,  or at  broker's or closing  agent's  option and sole
discretion, may interplead all parties and deposit any moneys or things of value
into a court of  competent  jurisdiction  and  shall  recover  court  costs  and
reasonable attorney fees.

20. ALTERNATIVE DISPUTE RESOLUTION:  MEDIATION.  If a dispute arises relating to
this contract,  and is not resolved,  the parties and broker(s) involved in such
dispute  (Disputants)  shall first proceed in good faith to submit the matter to
mediation.  The Disputants will jointly appoint an acceptable  mediator and will
share equally in the cost of such mediation.  In the event the entire dispute is
not resolved  within  thirty (30)  calendar  days from the date  written  notice
requesting  mediation is sent by one Disputant to the other(s),  the  mediation,
unless otherwise agreed, shall terminate.  This section shall not alter any date
in this contract, unless otherwise agreed.

21. ADDITIONAL  PROVISlONS (The language of these additional  provisions has not
been approved by the Colorado Real Estate Commission).

     Re Paragraph 3a: The remaining balance,  80,000.00,  of the purchase price,
     shall be paid to Seller at  closing  in the form of  Preferred  Stock.  The


[The  printed  portions  of  this  form,  except  (italicized)  (differentiated)
additions,   have  been  approved  by  the  Colorado   Real  Estate   Commission
(CBS2-9-95)]


     Seller portion of preferred stock shall receive a periodic payment equal to
     9% per annum,  (interest  only), on the face amount of the preferred stock.
     Said preferred stock shall be "cumulative".

     Re  Paragraph  16:  The above  mentioned  lease  shall be for a term of ten
     years, "NNN", inclusive of all interior, exterior, & shell maintenance to a
     workmanlike standard and at the direction of the Landlord;  and at a rental
     rate of $4,500.00 per month.  This lease shall be prepared for signature at
     closing.

22. RECOMMENDATION OF LEGAL COUNSEL. By signing this document,  Buyer and Seller
acknowledge  that the Selling  Company or the Listing  Company has advised  that
this  document  has  important  legal   consequences  and  has  recommended  the
examination of title and consultation with legal and tax or other counsel before
signing this contract.

23.  TERMINATION.  In the event this  contract is  terminated,  all payments and
things of value  received  hereunder  shall be returned and the parties shall be
relieved of all obligations hereunder, subject to Section 19.

24. SELLING COMPANY BROKER  RELATIONSHIP.  The selling  broker,  Keller Williams
Realty,  LLC, and its salespersons have been engaged as Buyer's Aqents.  Selling
Company  has  previously  disclosed  in  writing  to the  Buyer  that  different
relationships   are  available   which  include  buyer  ageny,   seller  agency,
subagency,or transaction broker.

25.  NOTICE TO BUYER.  Any notice to Buyer shall be effective  when  received by
Buyer, or, if this box is checked [ ] when received by Selling Company.

26. NOTICE TO SELLER.  Any notice to Seller shall be effective  when received by
Seller or Listing Company.

27.  MODIFICATION  OF THIS CONTRACT.  No subsequent  modification  of any of the
terms of this contract shall be valid,  binding upon the parties, or enforceable
unless made in writing and signed by the parties.

28. ENTIRE AGREEMENT.  This contract constitutes the entire contract between the
parties  relating to the subject  hereof,  and any prior  agreements  pertaining
thereto,  whether  oral or written,  have been merged and  integrated  into this
contract.

29.  NOTlCE OF ACCEPTANCE:  COUNTERPARTS.  This  proposal  shall  expire  unless
accepted  in writing,  by Buyer and Seller,  as  evidenced  by their  signatures
below,  and the offering party receives  notice of such  acceptance on or before
January 20, 1997 (Acceptance Deadline).  If accepted, this document shall become
a contract between  Seller and Buyer. A copy of this document may be executed by
each party,  separately,  and when each party has executed a copy thereof,  such




copies taken together shall be deemed to be a full and complete contract between
the parties.
                                               /s/ David J. Clamage
- -------------------------------------------   ----------------------------------
Buyer Commercial Acquisitions Corp.           Buyer  David J. Clamage, Chairman

Date of Buyer's signature Januarv 16, 1997    Date of Buyer's signature 01-16-97

Buyer's Address 1614 15th Street, 2nd Floor

- -------------------------------------------   ----------------------------------
Seller Richard W. Metcalfe, D.D.S., M.S.      Seller

Date of Seller's signature Attached Addendums

Seller's Address       1325 East 16th Avenue

- --------------------------------------------------------------------------------
The  undersigned  Broker(s)  acknowledges  receipt of the earnest  money deposit
specified in Section 3, and Selling Company  confims its Broker  Relationship as
set forth in Section 24.

Selling Company Keller Williams Realty    Address 3200 Cherry Creek South Drive

By: /s/  Danny Shwayder                   Date  January 16, 1997
   ------------------------------------
   Danny Shwayder

Listing Company Midtown Real Properties   Address  1723 Clarkson Street


By: /s/ Jack Kadelecek                    Date  January 21, 1997
   ------------------------------------
   Jack Kadelecek




                                            /s/ David J. Clamage       01-16-97
- ----------------------------------------  --------------------------------------
Buyer Commercial Acquisitions Corp. Date  Buyer David J. Clamage, Chairman  Date



- ---------------------------------------------
Seller Richard W. Metcalfe, D.D.S., M.S. Date





21.  ADDITIONAL   PROVISIONS   (continued)  The  language  of  these  additional
provisions has not been approved by the Colorado Reale Estate Commission).

Concerning the property known as:

     1325 East 16th Avenue Denver, CO 80218

     N/A as Appears in this contract shall mean "Not Applicable".

     Attached Addendum shall become a part of this contract

     Provided that the insurance is competitive in coverage and cost,  purchaser
     will insure property with Talty  Insurance.  Talty may require some form of
     payment other than Seller escrow.





This addendum has not been approved by the Colorado Real Estate  Commission.  It
was prepared by legal counsel for use by Keller Williams Realty, LLC.

                                    Addendum

This  document is an addendum  to the  Commercial  Contract to Buy and Sell Real
Estate.  The Contract dated January 16, 1997 by and between Richard W. Matcalfe,
D.D.S., M.S. as seller and Commercial Acquisitions Corporation and/or assigns as
purchaser,  relating to that certain Real Property located at: 1325 E. 16th Ave.
Denver CO 80218.

In the event of any  conflict  between the terms of the  printed  portion of the
contract and the terms of this addendum the  provisions  of this addendum  shall
control.

The following terms and conditions are added to and incorporated  into the above
referenced Contract;

1.  Inspection  Contingency  After receipt of items B, C, D, E,& F listed below,
Purchaser  shall have 30 business  days (the  Objection  Deadline) to review and
approve the following:

     A.   Physical  inspection  of  the  property,  including  all  improvements
          thereon:

     B.   All rental agreement, leases, service contracts, and all other written
          contracts or agreements which affect the property.

     C.   Operations  statements of the property for the last 36 calendar months
          prior  to the  date  hereof,  including  rent  roll to  determine  the
          currency of each tenants' rent payments.

     D.   All  architectural  renderings,  blueprints  and surveys  recorded and
          unrecorded, that are in seller's possession or available to seller.

     E.   Copies of all insurance policies currently in effect.

     F.   Inventory  of all  personal  property  owned by seller  located on the
          property and used in the management,  operation, or maintenance of the
          property.

Seller shall use its best efforts to provide Purchaser with said items B through
F or access to such items within 5 business  days after the mutual  execution of
this contract.  Purchaser shall acknowledge,  in writing, receipt of said items.
Delivery of such items to the agent shall constitute  delivery to the purchaser.
Unless Purchaser removes all contingencies in writing on or before the Objection
Deadline;  or if Purchaser gives notice to Seller if unsatisfactory  conditions,
and if Buyer and Seller have not agreed in writing to a settlement thereof on or
before 5 days  from the  Objection  Deadline  (the  Resolution  Deadline),  this
contract shall terminate three calendar days following the Resolution  Deadline;
unless,  within  three  calendar  days,  Seller  receives  written  notice  from
Purchaser waiving objection to all  unsatisfactory  conditions.  If at that time
this  contract  is  terminated,  then the  earnest  money  shall be  returned to
Purchaser and Purchaser and Seller shall be excused from any further performance
under this agreement.

2.  REMOVAL OF  CONTINGENCIES  Upon removal of all  contingencies  in writing by
Purchaser,  however,  in no  event  sooner  than 45 days  from  the date of this
contract, the Five Thousand Dollar earnest money note shall be redeemed for cash
and  deposited  into an interest  bearing  escrow  account with Title Company of
Listing Brokers choice and be non refundable to the Purchaser  absent of default
by  Seller  and  shall be  considered,  in the  event of  Purchaser  default, as
liquidated damages.  Any interest earned on the deposit monies prior to closing,
shall belong to the Party  entitled to the principal  amount of the earned money
deposit if the Purchaser has not defaulted.



3. PROPERTY  MAINTENANCE  Seller  warrants that he will maintain the property in
the same approximate condition that the property is in at the time of acceptance
of this contract and will not allow any substantial deterioration therefrom.

4. SURVEY Immediately  following the waiver of contingencies  Seller shall cause
the existing  Improvement  Location  Certificate for the subject  property to be
updated  at  Seller's  expense,  by a  surveyor  duly  licensed  by the State of
Colorado and delivered to Purchaser,  or if no Improvement  Location Certificate
exists, one will be prepared and delivered to Purchaser at Seller's expense.

5.  ENVIRONMENTAL   AUDIT  The  Seller  acknowledges  that  (he/she/it)  may  be
responsible  for  conditions  existing on the property  prior to the closing and
prior to the  conveyance of title to the Purchaser.  The Purchaser  acknowledges
that Keller  Williams  Realty,  LLC has  recommended and by this instrument does
recommend that the Purchaser obtain an Environmental  Audit of the property by a
qualified company or entity before the removal of contingencies by the Purchaser
as herein provided.

6. BROKER DISCLAIMER  [Responsibilities of Purchaser} The Broker has no means of
determining  with  any  degree  of  accuracy,  the  operational  history  of the
Property.  The Broker  disclaims  any  representations  made by any party of the
value of the Property, the probable operational costs of the Property, income to
be derived from the  Property,  if any; the status of the title of the Property,
the value of the Property,  the tax  consequences  of the  transaction to either
Purchaser or Seller,  the zoning and use of the  Property,  or other items which
may effect the decision of either  Purchaser of Seller to execute this  contract
or to consummate the transaction  contemplated  by this agreement. Purchaser and
Seller  Specifically agree to make their own physical inspection and examination
of the Property,  make their own  determination  of  the operational expenses of
the Property the legal and tax  consequences of the transaction  contemplated by
this  agreement  and any other  determination  which  Purchaser  or Seller might
determine necessary or prudent to a decision relating to the purchase or sale of
the  Property.  It is expressly  understood  by Purchaser  that Keller  Williams
Realty,  LLC has  not  made  any  investigation  or  determination,  other  than
specifically  expressed  herein,  with  respect to the  legality of the present,
contemplated or future uses of the Property;  violations of any federal,  state,
county,  or municipal  ordinances,  statutes,  zoning,  tract  restrictions,  or
set-back  ordinances;  planned or proposed federal,  state, county, or municipal
government  or any other  governmental  agency plans for use of the property for
public or private purposes, the presence of lead-based paint; or the presence or
absence of fungi or wood destroying  organisms;  any circumstances or conditions
which a qualified  Environmental  Audit might  disclose;  or the  correctness of
income  and  expense  information,  existence  and text of  leases,  options  or
party-wall agreements,  if any, and Purchaser agrees that such investigation and
determination  will be his sole  responsibility  and Keller Williams Realty, LLC
shall not be held responsible therefore.

7.  RESPONSIBILITIES  All parties acknowledge that they have not relied upon any
statements  or  representations  made by the Real Estate agents  concerning  the
environmental,  legal, tax, or financial  consequences of this transaction.  the
agents  have  recommended  tat Seller  and  Purchaser  obtain  legal,  tax,  and
accounting  advice  from their  respective  attorneys  and  accountants  and all
parties  hereby  agree not to hold its  agents  responsible  or liable as to the
legal, tax, or financial consequences of this transaction.

Keller  Williams  Realty,  LLC advises and  recommends  that all parties  hereto
obtain legal counsel to represent them in connection with examination of title ,
the  execution  of  this  contract,  and  all  other  aspects  relative  to  the
transaction contemplated hereby.



8. COMMISSIONS Seller hereby agrees that it shall pay a 7% commission to Midtown
Real  Properties and Keller Williams  Realty,  LLC in cash or certified funds at
closing in connection  with this  transaction.  Said  commission  shall be split
50%-50% between Midtown Real Properties and Keller Williams Really, LLC.

9. PURCHASER'S ENTRY ON THE PROPERTY From and after the mutual execution of this
contract,  Purchaser and its agents or designees may enter upon the property for
the  purpose  of making  surveys  and soil  tests or  otherwise  inspecting  and
investigating  the property.  Purchaser  hereby agrees to indemnify and hold the
Seller harmless from any claims of any type and nature, including mechanics lien
claims which may be filed against the Property by reason of the  performance  of
any such acts and  Purchaser  will restore the property to the  condition  which
existed prior to the entry of the Purchaser on the Property.

10.  NEXT  BUSINESS  DAY In the event any date  described  herein for payment or
performance  of the provisions  hereof,  falls on a Saturday,  Sunday,  or legal
holiday,  the time for such payment or performance shall be extended to the next
business day.

11. SURVIVAL Agreements, representations,  covenants and warranties contained in
this agreement and any amendment or supplement  hereto shall survive the closing
and delivery of deed hereunder and shall not be merged thereby.

12. REPRESENTATIONS AND WARRANTIES Seller hereby represents and warrants that as
of the date hereof,  to the best of his, her, its,  personal  knowledge  without
duty of further inquiry:

     A.   There is no  litigation  pending  or  threatened  which in any  manner
          affects the property.

     B.   Seller has not  received  any notice of and has no other  knowledge or
          information  of any pending or  contemplated  change in any applicable
          law,  ordinance,  or  restriction;  or of any  threatened  or  pending
          judicial  or  administrative  action;  or  any  action  threatened  by
          adjacent  landowners  which could result in any material change in the
          condition of the property.

     C.   To the best of Sellers personal knowledge,  there are no violations of
          any Federal, State, or local law, code, ordinance, rule, regulation or
          the requirement of any fire  underwriters,  board of fire underwriters
          or board exercising similar functions.

     D.   To the best of Sellers personal  knowledge,  the property is currently
          zoned so as to allow the existing use thereof.

     E.   Seller  has the  full  right  power,  and  authority  to  perform  its
          obligations hereunder.

     F.   Seller  personally  is aware  of no  condition  affecting  the soil or
          subsurface  portion of the  property  which could  cause  damage to or
          impair  the  use  of the  property  or  any  improvements  constructed
          thereon.  The terms "personal knowledge" as used herein shall mean the
          actual  knowledge  of an  individual  or  the  actual  knowledge  of a
          President,  General  Partner,  or Manager  of an entity  other than an
          individual.

The  representations  and warranties  herein stated shall be true on the date of
closing.

13.  AGENCY  RELATIONSHIP  The  Purchaser  and Seller  acknowledge  that  Keller
Williams Realty,  LLC and its employees and agents are acting as Buyer Broker in
this  transaction.  Purchaser and Seller  acknowledge  timely verbal and written
disclosure of said agency relationship.  Seller further acknowledges that two Of



Commercial  Acquisitions  Corporation's officers and directors,  David J.Clamage
and Kenneth R.  Shwayder,  are licensed by the Colorado Real Estate  Commission.
Additionally,  both Mr.  Clamage and Mr. Ken Shwayder are officers and directors
of Commercial Acquisitions Corporation. Ken Shwayder & Danny Shwayder are father
and son and are cousins of Mr. Clamage.  Mister's  Shwayder will put one percent
of the Co-op fee into the same CAC preferred stock that seller is receiving as a
part of the purchase price hereof.

14. LEASES & SECURITY DEPOSITS At the time of closing,  Seller shall provide the
Purchaser with a complete  accounting for all security  deposits made by tenants
occupying  any part of the  Property  as Of that date,  which  accounting  shall
reflect any deductions  that Seller has made against any Deposits.  The security
deposits and any interest  accruing  thereon shall be paid to or credited on the
settlement statement to Purchaser at closing and Purchaser will indemnify Seller
from any claims arising from  wrongfully  retaining or miss  application of such
security deposits after they are in the possession of the Purchaser.

15. 1031  EXCHANGE  COOPERATION  Seller and  Purchaser  may complete an IRS 1031
Exchange at closing of this  property.  Both parties agree to cooperate with the
other party and the facilitator regarding any 1031 Exchange.

16. LEGAL ACTION If this  Commercial  Contract to Buy and Sell Real Estate gives
rise to any legal action or  proceeding  between  Seller and  Purchaser,  or any
Broker,  the  prevailing  party shall be entitled  to recover  actual  costs and
reasonable  attorney's fees in addition to any other relief to which such party,
may be entitled.  The provisions of this paragraph shall inure to the benefit of
the parties, and their successors and assigns including the Brokers named herein
who seek to enforce a right hereunder.

                                   Acceptance

The terms and conditions of this addendum as set forth hereinabove, are added to
and fully incorporated into the heretofore referenced Commercial Contract to Buy
and Sell Real Estate.

Agreed and Accepted:                        Purchaser


By /s/ David J. Clamage                     Date 01-16-97
  ----------------------------                   ---------
  Commercial Acquisitions Corporation, David J. Clamage, Chairman


Broker: Keller Williams Realty, LLC


By /s/ Danny Shwayder                       Date 1/16/97
   ----------------------------                  --------
   Ken and Danny Shwayder, Agents


Broker: Midtown Real Properties


By /s/ Jack Kadelecek                       Date 1/21/97
   ----------------------------                  -------------
   Jack Kadelecek


Agreed and Accepted: Seller




By                                          Date
   ----------------------------                  -------------
   Richard W. Metcalfe D.D.S., M.S.

The Language  contained in this  addendum had been approved by legal counsel for
Keller Williams Realty, LLC.



THIS FORM HAS IMPORTANT LEGAL  CONSEQUENCES AND THE PARTIES SHOULD CONSULT LEGAL
AND TAX OR OTHER COUNSEL BEFORE SIGNING



                                COUNTERPROPOSAL



                                                                January 21, 1997

RE: Proposed contact to buy and sell the following  described real estate in the
County of Denver, Colorado, to wit:

Lots 16-19 Inc,  Block 27,  Park  Avenue  Addition,  County of Denver,  State of
Colorado

known as No. 1325 East 16th Avenue           Denver       CO          80218
Street Address                               City         State       Zip

dated January 16, 1997 between

         Richard W. Metcalfe, D.D.S., M.S.

Seller, and

         Commercial Acquisitions Corporation and/or Assigns

Buyer.

The  undersigned  accepts  the  proposed  contract,  subject  to  the  following
amendments.

1. Promissory note shall be converted to cash on Contract acceptance.

2.  Paragraph  16.  Possession  as reads  $1,000.00  per day shall be changed to
$200.00 per day.

3. Addendum Provision #2 shall be deleted.

4. Addendum Provisions 4 & 5 shall be changed to reflect "at Buyer's expense".

5. Add to Additional Provisions: "This contract shall be specifically contingent
on  further  negotiations  and  agreement  between  Buyer and  Seller  regarding
permanent financing of the purchase by January 28, 1997. Such agreement shall be
contained in an amendment to this contract.

6. It is agreed that Lots 14 and 15,  Block 27, Park Avenue  Addition,  City and
County of Denver are excluded from this Contract.

7) Subject to title commitment verifying legal description.

8) Subject to purchasers  review of last three year ending financial  statements
and federal income tax returns of seller and tenant.

     All other terms and conditions shall remain the same. This  counterproposal
shall expire unless accepted in writing by Buyer and Seller as evidence by their
signatures below and the offering party to this document receives notice of such
acceptance on or before January 23, 1997. If accepted, the proposed contract, as
amended hereby, shall become a contract between Seller and Buyer.

SELLER       /s/ Richard W. Metcalfe                        DATE     1/21/97
         ------------------------------------------------
         Richard W. Metcalfe, D.D.S. M.S.

         Commercial Acquisitions Corporation and/or Assigns

BUYER        /s/ David J. Clamage                           DATE     1/22/97
          -----------------------------------------------
      By: David J. Clamage, Chairman


NOTE When this  counterproposal form is used, the proposed contract is not to be
signed by the Party initiating this  counterproposal.  This counterproposal must
be securely attached to said proposed contract.