STOCK OPTION AGREEMENT

              THIS  STOCK  OPTION  AGREEMENT  (the  "Agreement") is  dated as of
December 31, 1996 (the "Effective Date") between Homeplex  Mortgage  Investments
Corporation,  a  Maryland  corporation  (the  "Company"), and  Steven J.  Hilton
("Optionee").

              WHEREAS,  the  Company  desires  to  obtain  the  services  of the
Optionee, and the Optionee has agreed to provide services to the Company;

              WHEREAS,  the Company  desires to compensate the Optionee for such
services by granting the Optionee an option (the "Option") to purchase shares of
the  Company's  common  stock,  $.01 par value per share (the  "Common  Stock",
subject to the terms and conditions of this Agreement;

              NOW, THEREFORE, the parties agree as follows:

              1. Grant of Option. The Company hereby grants to the Optionee,  on
the terms and subject to the conditions,  limitations and restrictions set forth
in this  Agreement,  an Option to purchase  500,000 shares of Common Stock at an
exercise price of $1.75 per share of Common Stock.

              2.  Exercise  Period,  Vesting  and  Amount.  The Option  shall be
exercisable  ratably in equal annual  increments over three years  commencing on
the first anniversary of the Effective Date; provided,  however, that the Option
shall become exerciseable in full if there is a change of control of the Company
required to be  reported in response to Item 1 of Form 8-K under the  Securities
Exchange Act of 1934 as in effect on the date of this  
                                       1

Agreement (or any similar or successor  form or  provisions)  on or prior to the
third anniversary of the Effective Date. The Option shall expire and become null
and void after December 31, 2002.

              3.  Exercise.  In order to exercise the Option,  the Optionee must
provide  written notice (the  "Exercise  Notice" to the Company at its principal
executive  office stating the number of shares in respect of which the Option is
being  exercised.  The  Exercise  Notice must be signed by the Optionee and must
include  his  complete  address  and  social  security  number.  At the  time of
exercise, the Optionee must pay to the Company the applicable exercise price per
share  times the  number of  shares as to which the  Option is being  exercised,
payable (a) by cash or cash  equivalent or (b) at the Company's  option,  by the
delivery of shares of Common Stock having a Fair Market Value (defined below) on
the date immediately preceding the exercise date equal to the aggregate exercise
price,  which  may  include  shares  subject  to the  Option.  If the  Option is
exercised in full, the Optionee will surrender this Agreement to the Company for
cancellation.  If the Option is exercised in part,  the Optionee will  surrender
this Agreement to the Company so that the Company may make appropriate  notation
hereon or cancel this Agreement and issue a new agreement  (containing  the same
terms and conditions set forth herein)  representing the unexercised  portion of
the  Option.  For these  purposes,  "Fair  Market  Value"  means (i) the average
closing  price on the New York Stock  Exchange  or any other  exchange or market
system on which the Common Stock is  primarily  traded for the last five trading
days ending on the date immediately
                                       2

preceding the exercise date; or (ii) if there is no reported  price  information
for the Common  Stock,  the fair market value as determined in good faith by the
Company's Board of Directors.

              4.  Tax  Withholding.  Any  provision  of  this  Agreement  to the
contrary notwithstanding,  the Company may take such steps as it deems necessary
or  desirable  for the  withholding  of any taxes that it is  required by law or
regulation of any governmental  authority,  federal, state or local, domestic or
foreign,  to  withhold  in  connection  with any of the  shares of Common  Stock
subject  hereto,  including  requiring  the  Optionee  to pay to the Company the
amount of such  withholding tax before the Company issues any shares pursuant to
the exercise of the Option.

              5. Dilution.  If the number of shares of Common Stock  outstanding
is changed  by reason of a stock  dividend,  stock  split,  reclassification  or
combination  of shares,  the number of shares of Common Stock then issuable upon
exercise of the Option and the  exercise  price per share will be  appropriately
adjusted.  In  the  event  of  any  merger,  consolidation,  reorganization,  or
recapitalization  of the Company  pursuant to which  holders of the Common Stock
receive securities,  other assets or cash (a "Reorganization Transaction"), then
upon any  subsequent  exercise of the Option,  the Optionee  will be entitled to
receive,  for each share of Common Stock  issuable  upon exercise of the Option,
the number and kind of  securities,  other assets or cash received in respect of
one share of Common Stock as a result of such Reorganization Transaction.
                                       3

              6. Termination.

              (a) If the  Company  discharges  Optionee  for Cause  (as  defined
         below),  then the Option will  terminate  immediately.  For purposes of
         this  Agreement,  "Cause" is  defined  to  mean  only an act or acts of
         dishonesty by Optionee  constituting a felony and resulting or intended
         to result  directly  or  indirectly  in  substantial  personal  gain or
         enrichment  at  the  expense  of  the  Company.   Notwithstanding   the
         foregoing,  Optionee  shall not be deemed to have been  terminated  for
         Cause  unless and until there shall have been  delivered  to Optionee a
         copy of a resolution duly adopted by the  affirmative  vote of not less
         than  three-quarters of the entire membership of the Company's Board of
         Directors (excluding Optionee if he is then a director) at a meeting of
         the Board called and held for the purpose (after  reasonable  notice to
         Optionee and an opportunity for Optionee, together with his counsel, to
         be heard before the Board),  finding that in the good faith  opinion of
         the Board Optionee was guilty of conduct meeting the criteria set forth
         above and specifying the particulars thereof.

                      (b) If Optionee voluntarily terminates his employment with
         the Company or if Optionee's  employment with the Company is terminated
         as a result of  Optionee's  death or Permanent  Disability  (as defined
         below),  then the Option will be exercisable  for six months  following
         such  termination  in the event of voluntary  termination  and one year
         following   such   termination  in  the  case  of  death  or  
                                       4

         Permanent Disability,  but only in any such case to the extent that the
         Option was exercisable on the date of termination. For purposes hereof,
         "Permanent  Disability" means a  disability  that  results  or,  in the
         judgment of a physician mutually agreeable to the Company and Optionee,
         is likely to result in Optionee  being unable to fulfill his duties for
         180 consecutive days.

                      (c)  If   Optionee's   employment   with  the  Company  is
         terminated by the Company without Cause, the Option will be immediately
         exercisable  for the aggregate  number of Option Shares not  previously
         exercised  and issued  pursuant to this  Agreement  until  December 31,
         2002;

                      (d) For  purposes  of  Section  6(a) or 6(b)  hereof,  any
         termination by the Company for Cause or Permanent  Disability  shall be
         communicated  by written Notice of  Termination  complying with Section
         8(c) of Optionee's Employment Agreement with the Company dated the date
         hereof.

              7.  Transfer  of  Option.  The  Optionee  shall not,  directly  or
indirectly,  sell,  pledge or otherwise  transfer  ("Transfer") any  unexercised
portion of the Option or the rights and  privileges  pertaining  thereto,  other
than pursuant to a qualified  domestic  relations order.  Neither the Option nor
the  underlying  shares of Common Stock is liable for or subject to, in whole or
in part, the debts,  contracts,  liabilities or torts of the Optionee,  nor will
they be subject to garnishment,  attachment,  execution,  levy or other legal or
equitable process, other than pursuant to a qualified domestic relations order.
                                       5

              8.  Certain  Legal  Requirements.  The  Company  will  register or
qualify the  Optionee's  shares of Common Stock under the Securities Act of 1933
and applicable blue sky or state  securities laws, and will cause such shares to
be listed on any  exchange  or trading  system upon which the  Company's  Common
Stock is listed.

              9.  Arbitration.   All  disputes,  claims  and  other  matters  in
controversy  arising directly or indirectly out of or related to this Agreement,
or  the  breach  thereof,  whether  contractual  or  non-contractual,  shall  be
determined by arbitration and shall be settled by three arbitrators, one of whom
shall be  appointed  by the  Company,  one by the Employee and the third of whom
shall be appointed by the first two arbitrators. Persons eligible to be selected
as arbitrators  shall be limited to attorneys who have been in practice at least
15 years  specializing  in employment law matters and who have had both training
and experience as arbitrators ("Experienced Arbitrators"). If either such person
fails to appoint an  arbitrator  within ten (10) days of a request in writing by
the other such person to do so or if the first two  arbitrators  cannot agree on
the appointment of a third  arbitrator  within thirty days, then such arbitrator
shall be appointed by the American  Arbitration  Association  (which appointment
shall  not be  limited  to  Experienced  Arbitrators  if  not  made  within  the
applicable time period).  Except as to the selection of arbitrators  which shall
be as  set  forth  above,  the  arbitration  shall  be  conducted  promptly  and
expeditiously  at such place in Phoenix,  Arizona  agreed to between the Company
and the Optionee in accordance  with the Commercial  Rules of Arbitration of the
American Arbitration  Association then in effect so as to enable the 
                                       6

arbitrators  to resolve the disputes,  claims and other  matters in  controversy
within forty-five (45) days of the commencement of the arbitration  proceedings.
The arbitrators shall base their award on applicable law and judicial  precedent
and,  unless  both  parties  agree  otherwise,  shall  include in such award the
findings  of fact and  conclusions  of law upon which the award is based and may
award temporary or permanent equitable relief. Judgment on the award rendered by
the arbitrators  may be entered in any court having  jurisdiction  thereof.  The
arbitrators'   resolution   of  the   dispute   shall  be  final,   binding  and
non-appealable.   The  nonprevailing  party  shall  bear  the  expenses  of  the
arbitrators and the arbitration, including reasonable attorneys' fees and costs.

              10. Miscellaneous.

                      (a) The Option is  intended  to be a  non-qualified  stock
         option under  applicable tax laws, and it is not to be characterized or
         treated as an incentive  stock option under Section 422 of the Internal
         Revenue Code of 1986.

                      (b) Neither the Optionee nor any person  claiming under or
         through the  Optionee  will have any of the rights or  privileges  of a
         shareholder  of the  Company in  respect of any of the shares  issuable
         upon exercise of the Option unless and until certificates  representing
         such shares have been issued and  delivered,  provided that the Company
         shall ensure that  certificates  representing  shares validly purchased
         hereunder  shall be issued and  delivered  promptly to the  Optionee or
         person validly claiming under or through Optionee.
                                       7

                      (c) All notices and other communications hereunder must be
         in writing and will be deemed to have been duly given when delivered or
         mailed in  accordance  with the  provisions of Section_14 of Optionee's
         Employment Agreement with the Company dated the date hereof.

                      (d) Subject to the  limitations  in this  Agreement on the
         transferability  by the Optionee of the Option and any shares of Common
         Stock,  this  Agreement  will be binding on and inure to the benefit of
         the successors and assigns of the parties hereto.

                      (e) If any  provision  of  this  Agreement  is  held to be
         illegal,  invalid or unenforceable  under any applicable law, then such
         provision will be deemed to be modified to the minimum extent necessary
         to render it legal, valid and enforceable,  and if no such modification
         will render it legal,  valid and enforceable,  then this Agreement will
         be construed as if not containing the provision held to be invalid, and
         the  rights  and  obligations  of the  parties  will be  construed  and
         enforced accordingly.

                      (f) The parties  acknowledge  and agree that any violation
         of the terms of this  Agreement  would  cause  irreparable  harm to the
         other  party and that,  in  addition  to all other  rights or  remedies
         available  at  law  or in  equity,  such  party  will  be  entitled  to
         injunctive  and other  equitable  relief to  prevent or enjoin any such
         violation.

                      (g) THIS  AGREEMENT  WILL BE GOVERNED BY AND  CONSTRUED IN
         ACCORDANCE WITH THE INTERNAL LAW, AND NOT 
                                       8

         THE LAW OF CONFLICTS, OF THE STATE OF ARIZONA.

                      (h)  This  Agreement  may be  executed  in any  number  of
         counterparts,  and all such  counterparts  will be deemed an  original,
         will be  construed  together  and  will  constitute  one  and the  same
         instrument.

                      (i) This  Agreement  embodies the complete  agreement  and
         understanding  among the parties  with  respect to the  subject  matter
         hereof and  supersedes  and  preempts  any prior  written,  or prior or
         contemporaneous oral, understandings,  agreements or representations by
         or among any of the parties that may have related to the subject matter
         hereof in any way.

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

                                   HOMEPLEX
                                   MORTGAGE INVESTMENTS
                                   CORPORATION


                                   By: /s/ Jay R. Hoffman
                                     ...........................................
                                   Name:    Jay R. Hoffman
                                   Title:   President

                                   OPTIONEE

                                   /s/ Steven J. Hilton
                                   .............................................
                                   Steven J. Hilton

                                       9