SMITH RANCH PLAZA

                              OFFICE BUILDING LEASE

1. PARTIES. This Lease, dated, for reference purposes only, October 20, 1983, is
made by and between S.R.P. Limited Partnership, a California Limited Partnership
(herein called  "Landlord")  and Fair,  Isaac & Company,  Incorporated,  (herein
called "Tenant").

2. PREMISES.  Landlord does hereby lease to Tenant and Tenant hereby leases from
Landlord those certain premises (herein called "Premises")  consisting of 25,994
rentable square feet including corridation and restrooms,  as outlined in red on
Exhibit A-1  attached  hereto,  being  situated  on the first,  second and third
floors of that certain building known as 120 North Redwood Drive, Suite 300, San
Rafael, California 94903.

Said Lease is subject to the terms,  covenants and  conditions  herein set forth
and the Tenant covenants as a material part of the  consideration for this Lease
to keep and perform each and all of said terms,  covenants and  conditions by it
to be kept and  performed  and that this  Lease is made upon  condition  of said
performance.

3. TERM.  The term of this Lease shall be for five (5) years,  commencing on the
lst day of May, 1984, and terminating on the 30th day of April, 1989.

4.  POSSESSION.  If the  Landlord,  for any reason  whatsoever,  cannot  deliver
possession  of the said Premises to the Tenant at the  commencement  of the term
hereof,  this Lease shall not be void or voidable,  nor shall Landlord be liable
to Tenant for any loss or damage resulting  therefrom,  nor shall the expiration
date of the above term be in any way extended, but in that event, all rent shall
be abated during the period between the  commencement  of said term and the time
when Landlord delivers possession;  except that, should Landlord fail to deliver
possession two or more months beyond any date agreed herein or  subsequently  as
the date of  possession,  Tenant may declare this Lease to be terminated and all
sums paid to Landlord by Tenant shall be promptly refunded and Tenant shall have
no  further  obligations  to  Landlord  under this  Lease.  Failure of Tenant to
exercise  this  option at the end of the first two months  delay or at any later
time,  shall not be deemed a waiver of the right to  exercise  the option at any
other date should possession not be delivered.

In the event that Landlord  shall permit Tenant to occupy the Premises  prior to
the  commencement  date of the term,  such occupancy shall be subject to all the
provisions  of  this  Lease.   Said  early  possession  shall  not  advance  the
termination date hereinabove provided.

5. BASIC RENT. Tenant agrees to pay to Landlord, as rental, without prior notice
or demand,  for the Premises  the sum of:  Thirty-Seven  Thousand,  Four Hundred
Thirty-One and no/100 ($37,431.00) Dollars (hereinafter called "Basic Rent"), on
or before the first day of the first full calendar  month of the term hereof and
a like sum as adjusted in the manner specified in Article 6 (hereinafter  called
"Adjusted Basic Rent"),  on or before the first day of each and every successive
calendar month thereafter during the term hereof,  except that the first month's
rent shall be paid upon the execution hereof. The Basic Rent shall be paid until
adjusted in the

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                                                                    EXHIBIT 10.5




manner specified in Paragraph 6. Thereafter,  the prevailing Adjusted Basic Rent
shall be the amount  paid.  Rent for any period  during the term hereof which is
for  less  than  one (1)  month  shall  be a  prorated  portion  of the  monthly
installment  herein,  based upon a thirty (30) day month.  Said rental  shall be
paid to  Landlord,  without  deduction  or offset in lawful  money of the United
States of  America,  which  shall be legal  tender at the time of payment at the
Office  of the  Building,  or to such  other  person or at such  other  place as
Landlord may from time to time designate in writing.

6.  ADJUSTED  BASIC  RENT.  On  each  annual   anniversary  date  following  the
commencement  of the lease  term,  the rent  specified  in  Paragraph  5 for the
ensuing  twelve (12) months shall be increased by the use of the Consumer  Price
Index (All  Urban  Consumers  Component)  for San  Francisco-Oakland  (1967=100)
published by the Bureau of Labor Statistics of the U.S. Department of Labor. The
indices used will be the latest published index prior to the commencement of the
lease term and,  in  subsequent  years the latest  published  index prior to the
commencement  of each such subsequent year of the lease term. The Adjusted Basic
Rent will be increased by the  percentage  increase,  if any,  between the index
used at the  commencement  of the lease  term and that used for each  subsequent
year.  In no event shall the  combination  of  increases  under this Section and
Section 7 exceed a 10% increase over the combined rental under said Sections for
the immediately preceding lease year.

In case the U.S.  Department  of Labor shall  discontinue  the  computation  and
publication of said Consumers Price Index or the  publication  thereof should be
delayed so as to prevent its use hereunder at the times required, there shall be
substituted  therefor  by Landlord  such other  index or method of  ascertaining
changes  in the  price  level as,  in the  opinion  of  Landlord,  most  closely
resembles the Consumer Price Index and method of arriving at the index figure by
said Bureau.

7.  ADDITIONAL  RENT.  Tenant  agrees to pay to  Landlord as  additional  rental
(hereinafter  "Additional  Rent") a sum  equal to  Tenant's  Proportional  share
(hereinafter defined) of Direct Costs (hereinafter defined).

For the purposes of this  Article,  Tenant's  Proportional  Share shall be a sum
equal to 61.14% of the total rentable area of the Building.

For the purposes of this Article,  the term "Direct  Costs" shall  include:  (i)
property  taxes paid or incurred by Landlord  consisting of all real or personal
property  taxes (and any tax levied  wholly or partly in lieu  thereof)  imposed
against the Building and all related improvements, including the adjacent walks,
parking lots,  and the land upon which they are situated,  but shall not include
any net income or  franchise  taxes;  (ii)  operating  costs paid or incurred by
Landlord in maintaining,  managing, and operating Building,  its equipment,  and
the adjacent walks, parking lots, landscaped areas, and the land upon which they
are located,  including  without  limiting the generality of the foregoing,  the
costs of services of both  independent  contractors and employees  (inclusive of
employment taxes, and fringe benefits) who perform duties connected with the day
to day management,  operation,  maintenance, and repair of the Building, and the
costs incurred by reason of any changes in any regulations, rules, requirements,
laws,  codes,  directives,  or similar  pronouncements  of any  Federal,  state,
county,  city, or other  governmental or regulatory agency which require changes
in or to the  physical  construction  of or related  equipment of or used in the
Building or the adjacent walks,  parking lots,  landscaped  areas,  and/or items
used in the operation and maintenance thereof.

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For the  purposes of this Lease the term "Base Year" shall refer to and mean the
calendar year in which this Lease term commences.

For the purposes of this Article,  the term "Comparison Year" shall refer to and
mean each  successive  calendar  year of the term of this  Lease  after the Base
Year.

For the purposes of this  Article,  the term  "Current  Year" shall refer to and
mean each  successive  calendar  year as it becomes the current  calendar  year,
beginning with the first calendar year next following the Base Year.

Each year during the term of this Lease other than the Base Year, Landlord shall
furnish to Tenant a written  statement  showing in reasonable  detail Landlord's
Direct  Costs for the  applicable  Comparison  Year and for the Base  Year,  and
showing the amount, if any, of Additional Rent due from Tenant.

During the Base Year,  Tenant shall pay Landlord,  on or before the first day of
each month during which a payment of Additional  Rent is due, a sum equal to the
total of the following two  components:  (a) the product of Fifteen Cents ($.15)
times the number of square feet of the  Premises for which  separate  electrical
metering is provided,  and (b) the product of Twenty-five Cents ($.25) times the
number of square feet of the Premises for which separate  electrical metering is
not provided.

To compute the  Additional  Rent for all years other than the Base year,  if the
Direct  Costs paid or incurred by the Landlord  for the  Comparison  Year are in
excess of the Annualized  Additional Rent paid by Tenant for the Base Year, then
the Tenant shall pay, as Additional Rent,  Tenant's  Proportional Share thereof.
Upon Tenant's  receipt of Landlord's  statement for the first  Comparison  Year,
Tenant  shall pay in full the  total  amount  of  Additional  Rent for the first
Comparison  Year,  and, in  addition,  for the  Current  Year the amount of such
Additional Rent shall be used as an estimate for the Current Year. The amount of
the Additional  Rent shall be divided in twelve (12) equal monthly  installments
and  Tenant  shall pay to  Landlord,  concurrently  with the  Basic  Rent or the
prevailing  Adjusted Basic Rent, as the case may be, which is next due following
the receipt of said  statement  from  Landlord,  an amount equal to one (1) such
monthly  installment  multiplied  by the  number of months  from  January in the
Current  Year in which  Landlord's  said  statement is submitted to the month of
such statement,  both months  inclusive.  Subsequent  installments of Additional
Rent  shall be  payable  concurrently  with  the  Basic  Rent or the  prevailing
Adjusted  Basic Rent,  as the case may be, for the balance for that Current Year
and shall continue until the statement for the next Comparison Year is rendered.
If the next or any succeeding  Comparison  Year results in an increase in Direct
Costs over the immediately preceding Comparison Year, then, upon receipt of said
statement  from  Landlord,  Tenant  shall  pay a  lump  sum  equal  to  Tenant's
Proportional   Share  of  the  Direct  Costs  less  the  total  of  the  monthly
installments  paid during the  immediately  preceding  Comparison  Year, and the
estimated  monthly  installments  of  Additional  Rent to  then be paid  for the
Current Year shall be adjusted to reflect such  increased  Direct Costs.  If the
next or any  succeeding  Comparison  Year  results in a decrease in Direct Costs
over the  immediately  preceding  Comparison  Year,  then,  upon receipt of said
statement from Landlord,  the estimated monthly  installments of Additional Rent
to then be paid for Current  Year shall be adjusted  to reflect  such  decreased
Direct Costs,  and the difference  between  Tenant's  Proportional  Share of the
decreased Direct Costs and the total of the monthly installments paid during the
immediately  preceding

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Comparison Year shall be credited to the first (and  succeeding,  if applicable)
installments of Additional Rent to be paid for the Current Year.

If the term of this Lease has expired  and/or  Tenant has vacated the  Premises,
when the final  determination  is made of Tenant's share of Direct Costs for the
year in which this Lease  terminated,  Tenant shall immediately pay any increase
due over the estimated amounts paid and, conversely, any overpayment made in the
event said costs decrease shall be immediately rebated by Landlord to Tenant.

8.  SECURITY  DEPOSIT.   Tenant  ,  has  deposited  with  Landlord  the  sum  of
Thirty-Seven  Thousand,  Four Hundred Thirty-One Dollars ($37,431.00).  Said sum
shall be held by Landlord as security for the faithful  performance by Tenant of
all the terms, covenants,  and conditions of this Lease to be kept and performed
by Tenant during the term hereof.  Said sum shall accrue interest at the rate of
eight  percent (8%) per annum,  to be  compounded  annually,  or, at  Landlord's
election,  to be  paid to  Tenant.  All  references  in  this  lease,  including
references in this Paragraph 8, to the security deposit shall be deemed to refer
to said  above-mentioned  sum  together  with any accrued  interest  not paid by
Landlord to Tenant.  If Tenant  defaults  with respect to any  provision of this
Lease,  including,  but not limited to the provisions relating to the payment of
rent,  Landlord may (but shall not be required  to) use,  apply or retain all or
any part of the security deposit for the payment of any rent or any other sum in
default,  or for the payment of any amount  which  Landlord  may spend or become
obligated to spend by reason of Tenant's default,  or to compensate Landlord for
any other  loss or  damage  which  Landlord  may  suffer  by reason of  Tenant's
default.  If any  portion of said  deposit is so used or applied,  Tenant  shall
within five (5) days after written demand  therefor,  deposit cash with Landlord
in an amount  sufficient to restore the security  deposit to its original amount
and  Tenant's  failure to do so shall be a  material  breach of this  Lease.  If
Landlord does so apply all or a portion of the security deposit,  interest shall
be abated  until such time as the applied  portion is  restored to its  original
amount.  Landlord  shall not be required to keep this security  deposit,  or the
interest accrued thereon, separate from its general funds. If Tenant shall fully
and faithfully  perform every provision of this Lease to be performed by it, the
security  deposit  together with said interest  thereon,  or any balance thereof
shall be  returned  and paid to Tenant (or, at  Landlord's  option,  to the last
assignee of Tenant's interest  hereunder) at the expiration of the Lease term or
at any earlier ' date at which Tenant or Landlord shall  terminate this Lease at
their  election  as may be  provided  herein.  In the  event of  termination  of
Landlord's interest in this Lease,  Landlord shall transfer said deposit and the
accrued interest thereon to Landlord's successor in interest,  to hold under the
same conditions as did Landlord.

9. USE.  Tenant shall use the premises for general office  purposes of the Fair,
Isaac  Companies,  which purposes are known and approved by Landlord,  and shall
not use or permit the  Premises  to be used for any other  purpose  without  the
prior written consent of Landlord.

Tenant  shall not do or permit  anything to be done in or about the Premises nor
bring or keep anything  therein which will in any way increase the existing rate
of or  affect  any  fire or other  insurance  upon  the  Building  or any of its
contents,  or cause  cancellation of any insurance policy covering said Building
or any part  thereof  or any of its  contents.  Tenant  shall  not do or  permit
anything to be done in or about the  Premises  which will in any way obstruct or
interfere  with the rights of other  tenants or  occupants  of the  Building  or
injure or annoy them or use or allow the  Premises to be used for any  improper,
immoral,  unlawful or objectionable purpose, nor shall

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Tenant  cause,  maintain or permit any  nuisance  in, on or about the  Premises.
Tenant  shall not  commit or  suffer  to be  committed  any waste in or upon the
Premises.

10.  COMPLIANCE  WITH THE LAW.  Tenant  shall  not use the  Premises  or  permit
anything to be done in or about the Premises which will in any way conflict with
any law,  statute,  ordinance or governmental rule or regulation now in force or
which may hereafter be enacted or  promulgated.  Tenant shall,  at its sole cost
and  expense,   promptly  comply  with  all  laws,   statutes,   ordinances  and
governmental  rules,  regulations  or  requirements  now in force  or which  may
hereafter be in force,  and with the requirements of any board of fire insurance
underwriters or other similar bodies now or hereafter constituted,  relating to,
or  affecting  the  condition,  use  or  occupancy  of the  Premises,  excluding
structural changes not related to or affected by Tenant's  improvements or acts.
The judgment of any court of competent  jurisdiction  or the admission of Tenant
in any action against Tenant,  whether  Landlord is a party thereto or not, that
Tenant has violated any law, statute, ordinance or governmental rule, regulation
or  requirement,  shall be  conclusive  of that fact as between the Landlord and
Tenant.

11. CONSTRUCTION.  Prior to the commencement of the term hereof,  Landlord shall
furnish and install within the premises the tenant improvements shown on Exhibit
"A" and as shown on Exhibit  "B" to be dated  October 31,  1983,  to be attached
hereto and made a part hereof.

All work not within the normal scope of the construction  trades employed in the
building  construction,  such as the  furnishing  and  installing  of  telephone
equipment and wiring, furniture,  furnishings, office equipment, trade fixtures,
carpeting (unless installed by Landlord under the first part of this paragraph),
special draperies (in addition to Building  Standard  horizontal slat blinds for
which no substitution is permitted), and other items of personal property, shall
be furnished and installed by the Tenant at Tenant's expense, Tenant shall adopt
a schedule in  conformance  with the  schedule  of  Landlord's  contractors  and
conduct its work in such a manner as to maintain  harmonious labor relations and
so as not to  unreasonably  interfere  with or delay the work of the  Landlord's
contractors. Tenant's contractors, subcontractors, and labor shall be acceptable
to and  approved  by  Landlord  and  shall  be  subject  to  the  administrative
supervision of the Landlord's general contractor.  Contractors or subcontractors
engaged  by Tenant  shall  insure,  as far as may be  reasonably  possible,  the
progress of the work without  interruption on account of strikes,  work stoppage
or other causes for delay.  Landlord shall give  reasonable  access and entry to
the Premises to Tenant and its contractors and  subcontractors  to enable Tenant
to adapt the Premises for Tenant's use.

12.  ALTERATIONS  AND ADDITIONS.  Tenant shall not make or suffer to be made any
alterations, additions or improvements to or of the Premises or any part thereof
without  the  written  consent  of  Landlord  first  had  and  obtained  and any
alterations, additions or improvements to or of said Premises including, but not
limited to, wall  covering,  paneling and built-in  cabinet work,  but excepting
movable or modular furniture and trade fixtures,  shall on the expiration of the
term  become a part of the  realty  and  belong  to the  Landlord  and  shall be
surrendered with the Premises.  In the event Landlord  consents to the making of
any alterations,  additions or improvements to the Premises by Tenant,  the same
shall be made by Tenant at Tenant's sole cost and expense, and any contractor or
person  selected by Tenant to make the same must first be approved of in writing
by the Landlord  which  approval  will not be  unreasonably  withheld.  Upon the
expiration or sooner termination of the term hereof,  Tenant shall, upon written
demand by  Landlord,  given at least  thirty  (30) days  prior to the end of the
term,  at Tenant's  sole cost and expense,  promptly and with all due  diligence
remove any

                                       5




alterations,  additions,  or improvements made by Tenant which are designated by
Landlord to be removed, and Tenant shall,  forthwith and with all due diligence,
at its sole cost and expense,  repair any damage to the Premises  caused by such
removal.

13. REPAIRS. (a) By taking possession of the Premises, Tenant shall be deemed to
have  accepted  the Premises as being in good,  sanitary  order,  condition  and
repair except as may be noted in writing and delivered to Landlord  within seven
(7) days of possession.  Tenant shall,  at Tenant's sole cost and expense,  keep
the Premises and every part thereof in good condition and repair, damage thereto
from causes beyond the  reasonable  control of Tenant and from ordinary wear and
tear  excepted.  Tenant shall upon the  expiration or sooner  termination of the
Lease hereof surrender the Premises to the Landlord in good condition,  ordinary
wear and tear and damage from  causes  beyond the  reasonable  control of Tenant
excepted. Except as specifically provided in an addendum, if any, to this Lease,
Landlord shall have no obligation whatsoever to alter, remodel, improve, repair,
decorate or paint the Premises or any part thereof and the parties hereto affirm
that Landlord has made no  representations to Tenant respecting the condition of
the Premises or the Building except as specifically herein set forth.

     (b) Notwithstanding  the provisions of Article 13(a) hereinabove,  Landlord
shall repair and maintain the  structural  portions of the Building,  including,
without  limitation,   the  basic  plumbing,  air  conditioning,   heating,  and
electrical  systems and all other  improvements  to the real property upon which
the  Building  is situated  installed  or  furnished  by  Landlord,  unless such
maintenance  and  repairs  are  caused in part or in whole by the act,  neglect,
fault or omission of any duty by the Tenant, its agents, servants,  employees or
invitees, in which case Tenant shall pay to Landlord the reasonable cost of such
maintenance  and repairs.  Landlord  shall not be liable for any failure to make
any such repairs or to perform any maintenance unless Landlord shall fail within
five (5) days (or such shorter period as the importance or the crucial nature of
the repair may  reasonably  require) after notice of the need of such repairs or
maintenance is given to Landlord by Tenant, to commence and diligently prosecute
such maintenance and repair.  Further  notwithstanding the provisions of Article
13(a)  hereinabove,  Landlord  shall  maintain  the overall  appearances  of the
Premises and the public areas of the building and its appurtenant  property at a
high standard,  specifically including,  but in no way limited to, repainting or
replacing  carpeting  in cases  where  fair  wear and tear have  impaired  their
appearance  to a level  inconsistent  with the quality of the  property.  Should
Landlord fail to thus commence or diligently prosecute any maintenance or repair
hereby  required  by  Landlord  to be  performed,  then  Tenant  may cause  such
maintenance  or repair to be performed and deduct the cost thereof from the next
rent  payable by Tenant to  Landlord.  Except as  provided in Article 24 hereof,
there shall be no  abatement  of rent and no  liability of Landlord by reason of
any injury to or interference  with Tenant's business arising from the making of
any repairs, alterations or improvements in or to any portion of the Building or
the Premises or in or to fixtures, appurtenances and equipment therein.

14. HOLD HARMLESS. Tenant shall indemnify and hold harmless Landlord against and
from any and all  claims  arising  from  Tenant's  use of the  Premises  for the
conduct  of its  business  or from any  activity,  work,  or other  thing  done,
permitted or suffered by the Tenant in or about the Building,  and shall further
indemnify and hold harmless Landlord against and from any and all claims arising
from any breach or default in the performance of any obligation on Tenant's part
to be  performed  under  the terms of this  Lease,  or  arising  from any act or
negligence of the Tenant, or any officer, agent, employee,  guest, or invitee of
Tenant,  and from all and  against  all costs,  attorneys'  fees,  expenses  and
liabilities incurred in or about any such claim or any action or

                                       6




proceeding brought thereon, and, in any case, action or proceeding to be brought
against Landlord by reason of any such claim, Tenant, upon notice from Landlord,
shall defend the same at Tenant's expense by counsel reasonably  satisfactory to
Landlord.  Tenant, as a material part of the  consideration to Landlord,  hereby
assumes all risk of damage to  property or injury to persons,  in, upon or about
the Premises, from any cause other than Landlord's negligence, and Tenant hereby
waives all claims in respect thereof against Landlord.

Landlord or its agents shall not be liable for any damage to property  entrusted
to employees of the Building, nor for loss or damage to any property by theft or
otherwise, nor for any injury to or damage to persons or property resulting from
fire, explosion,  falling plaster, steam, gas, electricity,  water or rain which
may leak from any part of the Building or from the pipes, appliances or plumbing
works  therein or from the roof,  street or  subsurface  or from any other place
resulting from dampness or any other cause  whatsoever,  unless caused by or due
to the negligence of landlord,  its agents,  servants or employees.  Landlord or
its  agents  shall  not be  liable  for  interference  with  the  light or other
incorporeal  hereditaments,  loss of business by tenant,  nor shall  landlord be
liable for any latent  defect in the premises or in the  building.  Tenant shall
give prompt  notice to landlord in case of fire or  accidents in the premises or
in the building or of defects therein or in the fixtures or equipment.

15.  ASSIGNMENT  AND  SUBLETTING.  Neither Tenant nor its heirs or assigns shall
either voluntarily or by operation of law, assign, transfer,  mortgage,  pledge,
hypothecate or encumber this Lease or any interest therein, and shall not sublet
the Premises or any part thereof, or any right or privilege appurtenant thereto,
or suffer any person (Tenant, its employees,  servants, invitees,  subsidiaries,
affiliates,  successors,  or their  employees,  agents,  servants  and  invitees
excepted) to occupy or use the said Premises,  or any portion  thereof,  without
the prior written consent of Landlord had and obtained,  which consent shall not
be unreasonably withheld.  Neither any change in the ownership of Tenant's stock
nor any merger,  corporate  reorganization  or corporate  acquisition  involving
Tenant shall be construed to constitute an assignment within the meaning of this
Article. A consent to one assignment,  subletting,  occupation or use by another
person shall not be deemed to be a consent to any subsequent  assignment and any
purported  assignment  in violation of the  provisions  of this Article  without
Landlord's  consent  shall be void,  and shall,  at the option of the  Landlord,
constitute a default under this Lease.

16. LIENS. Tenant shall keep the Premises and the property in which the Premises
are situated  free from any liens arising out of any work  performed,  materials
furnished or obligations incurred by Tenant. Landlord may require, at Landlord's
sole option,  that Tenant shall  provide to Landlord,  at Tenant's sole cost and
expense,  a lien and  completion  bond in an amount equal to one and one-half (1
1/2)  times  any and all  estimated  costs of any  improvements,  additions,  or
alterations  in the  Premises,  to insure  Landlord  against any  liability  for
mechanics' and materialmen's liens and to insure completion of the work.

17. SUBROGATION.  As long as their respective  insurers so permit,  Landlord and
Tenant hereby mutually waive their  respective  rights of recovery  against each
other  for any loss  insured  by fire,  extended  coverage  and  other  property
insurance  policies  existing for the benefit of the  respective  parties.  Each
party shall  obtain any special  endorsements,  if required by their  insurer to
evidence compliance with the aforementioned waiver.

18. LIABILITY INSURANCE.  Tenant shall, at Tenant's expense,  obtain and keep in
force during the term of this Lease a policy of  comprehensive  public liability
insurance  insuring

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Landlord and Tenant  against any liability  arising out of the  ownership,  use,
occupancy or maintenance of the Premises and all areas appurtenant thereto. Such
insurance at all times shall be a combined single  aggregate policy in an amount
of not less than One Million Dollars  ($1,000,000).  The limit of said insurance
shall not,  however,  limit the  liability of the Tenant  hereunder.  Tenant may
carry said insurance under a blanket policy, providing,  however, said insurance
by Tenant  shall have a Landlord's  protective  liability  endorsement  attached
thereto.  If Tenant shall fail to procure and maintain said insurance,  Landlord
may, but shall not be required to, procure and maintain same, but at the expense
of Tenant.  Insurance required hereunder,  shall be in companies rated A+ AAA or
better in "Best's  Insurance  Guide." Tenant shall deliver the Landlord prior to
occupancy of the Premises  copies of policies of  liability  insurance  required
herein or  certificates  evidencing  the existence and amounts of such insurance
with  loss  payable  clauses  satisfactory  to  Landlord.  No  policy  shall  be
cancellable or subject to reduction of coverage except after ten (10) days prior
written notice to Landlord. Landlord will keep the Premises insured for fire and
extended  coverage  equivalent  to 90% or more of full  replacement  cost at all
times during the term of this Lease.  Landlord will also maintain  comprehensive
general  public  liability  insurance.  Tenant's  liability  insurance  shall be
primary coverage and Landlord's liability insurance shall be secondary.

19.  SERVICES AND UTILITIES.  Provided that Tenant is not in default  hereunder,
Landlord agrees to furnish to the Premises during  reasonable hours of generally
recognized  business days, to be determined by Landlord at his sole  discretion,
and subject to the rules and  regulations  of the Building of which the premises
are a part,  electricity  for normal lighting and fractional  horsepower  office
machines,  heat and air  conditioning  required in  Landlord's  judgment for the
comfortable use and occupation of the Premises, and janitorial service. Landlord
shall also  maintain  and keep  lighted the common  stairs,  common  entries and
toilet rooms in the Building. Landlord shall not be liable for, and Tenant shall
not be entitled to, any reduction of rental by reason of  Landlord's  failure to
furnish any of the foregoing when such failure is caused by accident,  breakage,
repairs,  strikes, lockouts or other labor disturbances or labor disputes of any
character,  or by any other cause, similar or dissimilar,  beyond the reasonable
control of Landlord.  Landlord shall not be liable under any circumstances for a
loss of or injury to property, however occurring,  through or in connection with
or incidental  to, failure to furnish any of the  foregoing.  Supplementary  air
conditioning  units  will  be  installed  in  the  premises  with  the  cost  of
installation  and the cost of operation  and  maintenance  thereof to be paid by
Tenant to Landlord or public utility upon demand by Landlord or utility.

The  nature of the  business  of Tenant is such that the use of  electronic  and
electrical  equipment is central to the organization.  As a result,  Tenant will
use an amount of  electrical  power  greater  than  would be used by some  other
tenant not engaged in a similar business. Tenant shall not connect with electric
current except through existing  electrical  outlets in the Premises.  If Tenant
shall require water or electric  current in excess of that usually  furnished or
supplied for the use of the  Premises in Tenant's  normal  business  operations,
Tenant shall first procure the written consent of Landlord, which Landlord shall
not unreasonably refuse, to the use thereof and Landlord may cause a water meter
or electrical  current  meter to be installed in the Premises,  so as to measure
the amount of water and electric  current consumed for any such use. The cost of
any such meters and of  installation,  maintenance  and repair  thereof shall be
paid for by the Tenant and Tenant agrees to pay to Landlord promptly upon demand
therefore by Landlord for all such water and electric  current consumed as shown
by said  meters,  at the rates  charged for such  services  by the local  public
utility  furnishing the same,  plus any additional  expense  incurred in keeping
account of the water and electric  current so consumed.  If a separate  meter is
not

                                       8




installed,  such  excess  cost for  such  water  and  electric  current  will be
established by an estimate made by a utility company or electrical engineer.

Notwithstanding  anything to the contrary contained in this Section 19, Landlord
shall  install,  as a  portion  of  Exhibit  A,  "Work  Agreement,"  excess  air
conditioning and electrical distribution equipment for Tenant's  heat-generating
equipment. In addition,  Landlord shall provide separate metering, to the extent
feasible, of electrical  consumption in Tenant's Premises,  with the intent that
Tenant shall  determine  its own hours and methods of operation and pay for such
consumption direct to the utility.

20. PROPERTY TAXES.  Tenant shall pay, or cause to be paid, before  delinquency,
any and all taxes levied or assessed and which  become  payable  during the term
hereof upon all Tenant's leasehold improvements,  equipment, furniture, fixtures
and personal  property located in the Premises;  except that which has been paid
for by Landlord,  or is the standard of the Building. In the event any or all of
the  Tenant's  leasehold  improvements,  except  that which has been paid for by
Landlord, or is the standard of the Building, equipment, furniture, fixtures and
personal  property  shall be assessed and taxed with the Building,  Tenant shall
pay to Landlord its share of such taxes  within ten (10) days after  delivery to
Tenant by Landlord of a statement  in writing  setting  forth the amount of such
taxes applicable to Tenant's property.

21. RULES AND REGULATIONS.  Tenant shall faithfully  observe and comply with the
rules and regulations that Landlord shall from time to time promulgate. Landlord
reserves  the right from time to time to make all  reasonable  modifications  to
said rules. The additions and modifications to those rules shall be binding upon
Tenant  upon  delivery  of a copy of  them  to  Tenant.  Landlord  shall  not be
responsible to Tenant for the  nonperformance  of any said rules and regulations
by any other tenants or  occupants.  Landlord  agrees  diligently to enforce the
Rules and Regulations with regard to all Tenants in the Building.

22.  HOLDING OVER.  If Tenant  remains in possession of the Premises or any part
thereof  after the  expiration  of the term  hereof,  with the  express  written
consent of Landlord,  such occupancy shall be a tenancy from month to month at a
rental  in the  amount  of the last  monthly  installment  of Basic  Rent or the
prevailing  Adjusted  Basic  Rent,  as the  case may be,  plus the last  monthly
installment of Additional  Rent, and all other charges  payable  hereunder,  and
upon all the terms hereof applicable to a month to month tenancy.

23. ENTRY BY LANDLORD. Landlord reserves and shall at any and all times have the
right to enter the Premises for the purposes of inspection, and for that purpose
shall at all times have and retain the  necessary  keys with which to unlock all
doors in, upon, and about the Premises, excluding Tenant's vaults, safes, files,
and such areas as Tenant shall  designate as "secure  areas."  Tenant shall have
the right to place  Tenant's own locks on any such  designated  "secure  areas."
Landlord  shall  have the  right to  inspect  the  physical  status of any areas
designated  as  "secure  areas"  upon  notice to Tenant  and in  company  with a
representative  of Tenant.  Landlord  shall have right of access to the Premises
necessary to provide  janitorial and other services to be provided hereunder but
the times of such  access  shall be those  that  shall be agreed on from time to
time between Landlord and Tenant, and neither party shall withhold its agreement
unreasonably.  Landlord shall have the right, upon reasonable  notice, to submit
Premises to inspection by prospective purchasers or tenants. Landlord shall have
the right to enter the Premises  during normal  business  hours of 9:00 a.m. and
5:00 p.m.  during  working days in order to post notices of  non-responsibility.
Landlord  shall  have the right to enter the  Premises,  other

                                       9




than the secure areas, at any time Landlord deems it necessary or desirable,  in
order to alter,  improve,  or repair the premises and may for that purpose erect
scaffolding  and other necessary  structures  where  reasonably  required by the
character of the work to be performed, always providing that access by Tenant to
the Premises or freedom of movement  within the  Premises  are not  unreasonably
restricted.  Landlord shall have the right to use the keys in his possession for
the  purpose  of  entering  the   Premises  for  the  purposes  of   alteration,
improvement,  or repair. Landlord undertakes,,  in those cases where alteration,
improvement,  or repair can be planned in  advance,  to notify  Tenant as far in
advance as is possible, and in those cases where an alteration,  improvement, or
repair is of an  emergency  or other  nature such that  advance  planning is not
possible,  to notify  Tenant  promptly  that the  Premises  have  been  entered.
Landlord shall have no liability to Tenant for any such proper  entrance  except
for any failure to exercise  due care for  Tenant's  property.  Tenant  shall be
responsible to report to landlord any circumstance  requiring action by Landlord
in any secure area.

As regards any proper entry governed by this Paragraph, Tenant hereby waives any
claim  for  damages  or for  injury or  inconvenience  to or  interference  with
Tenant's business, any loss of occupancy or quiet enjoyment of the Premises, and
any other loss occasioned  thereby,  other than a loss resulting from negligence
by Landlord. Any such proper entry shall not be cause for any abatement of rent.

Any proper  entry to the  Premises  as governed  by this  Paragraph  obtained by
Landlord  by any of these  said  means  shall  not under  any  circumstances  be
construed or deemed to be a forcible or unlawful  entry into,  or a detainer of,
the Premises, or an eviction of Tenant from the Premises or any portion thereof.

24.  RECONSTRUCTION.  In the event the  Premises or the  Building are damaged by
fire or other perils covered by extended coverage insurance,  Landlord agrees to
forthwith repair the same; and this Lease shall remain in full force and effect,
except that Tenant  shall be entitled to a  proportionate  reduction of all rent
payable  hereunder  while  such  repairs  are  being  made,  such  proportionate
reduction  to be based upon the extent to which the damage  and/or the making of
such repairs  shall  materially  interfere  with the business  carried on by the
Tenant in the Premises.  If the damage is due to the fault and neglect of Tenant
or his employees, there shall be no abatement of rent.

In the event the  Premises or the  Building are damaged as a result of any cause
other than the perils  covered by fire and  extended  coverage  insurance,  then
Landlord shall forthwith repair the same, provided the extent of the destruction
be less than ten percent (10%) of the then full replacement cost of the building
in which the Premises are located.  In the event the destruction of the Premises
or the Building by a peril not covered by fire and extended  coverage  insurance
is to an extent  greater than ten percent  (10%) of the full  replacement  cost,
then Landlord shall have the option; (1) to repair or restore such damage,  this
Lease  continuing in full force and effect;  or (2) give notice to Tenant at any
time within sixty (60) days after such damage,  terminating this Lease as of the
date specified in such notice,  which date shall be no less than thirty (30) and
no more than sixty (60) days  after the giving of such  notice.  In the event of
giving such  notice,  this Lease shall  expire and all interest of the Tenant in
the Premises  shall  terminate  on the date so specified in such notice.  If the
Premises  of the  Building  are  damaged as a result of any cause other than the
perils  covered by fire and  extended  coverage  insurance,  and  whether or not
Landlord  elects to repair or restore such damage or to terminate  this Lease as
herein  provided,  Tenant shall be entitled to a proportionate  reduction of all
rent  payable  hereunder to be based

                                       10




upon the  extent to which the damage  and the  making of such  repairs,  if any,
shall  materially  interfere  with the business  carried on by the Tenant in the
Premises.

Notwithstanding  anything to the contrary  contained in this  Article,  Landlord
shall not have any obligation  whatsoever to repair,  reconstruct or restore the
Premises  (1) when the damage  resulting  from any casualty  covered  under this
Article  occurs  during the last twelve (12) months of the extended term of this
Lease, if any extended term there is; or (2) when the damage  resulting from any
casualty covered under this Article occurs during the last twelve (12) months of
the original term of this Lease unless  Tenant,  within ten (10) days  following
Landlord's  notice to Tenant of  Landlord's  election not to repair such damage,
exercises Tenant's option to renew.

Landlord  shall not be  required to repair any injury or damage by fire or other
cause, or to make any repairs or replacements of any panels, decoration,, office
fixtures,  railings, floor covering,  partitions, or any other property which is
installed in the Premises by Tenant.

Except as otherwise  provided in this  Article,  Tenant shall not be entitled to
any  compensation  or damages from  Landlord for loss of the use of the whole or
any part of the Premises,  Tenant's  personal  property or any  inconvenience or
annoyance  occasioned by such damage,  repair,  reconstruction  or  restoration,
except as caused by Landlord, Landlord's agents or employees.

25.  DEFAULT.  In  addition to any other act or event  elsewhere  stated in this
Lease which will cause a default hereunder, the occurrence of any one or more of
the following acts or events shall constitute a default and breach of this Lease
by Tenant.

         (a) The vacating or abandonment of the Premises by Tenant.

         (b) The  failure  by  Tenant to make any  payment  of rent or any other
payment  required to be made by Tenant  hereunder,  as and when due,  where such
failure  shall  continue  for a period of three (3) days  after  written  notice
thereof by Landlord to Tenant.

         (c) The failure by Tenant to observe or perform  any of the  covenants,
conditions  or  provisions  of this Lease to be  observed  or  performed  by the
Tenant,  other than described in  subparagraph  (b) of this Article,  where such
failure  shall  continue for a period of thirty (30) days after  written  notice
thereof by Landlord to Tenant, provided, however, that if the nature of Tenant's
default is such that more than thirty (30) days are reasonably  required for its
cure, then Tenant shall not be deemed to be in default if Tenant  commences such
cure within said thirty  (30) day period and  thereafter  diligently  prosecutes
such cure to completion.

         (d)  The  making  by  Tenant  of  any  general  assignment  or  general
arrangement for the benefit of creditors;  or the filing by or against Tenant of
a petition to have Tenant adjudged a bankrupt,  or a petition or  reorganization
or arrangement  under any law relating to bankruptcy  (unless,  in the case of a
petition filed against Tenant,  the same is dismissed  within one hundred twenty
(120) days); or the appointment of a trustee or a receiver to take possession of
substantially  all of  Tenant's  assets  located at the  Premises or of Tenant's
interest in this Lease, where possession is not restored to Tenant within thirty
(30)  days;  or  the  attachment,   execution  or  other  judicial   seizure  of
substantially  all of  Tenant's  assets  located at the  Premises or of Tenant's
interest in this Lease,  where such seizure is not discharged within thirty (30)
days.

                                       11




26. REMEDIES IN DEFAULT.  In the event of any such material default or breach by
Tenant,  Landlord may at any time  thereafter,  with or without notice or demand
and  without  limiting  Landlord  in the  exercise  of a right or  remedy  which
Landlord may have by reason of such default or breach:

         (a)  Terminate  Tenant's  right to  possession  of the  Premises by any
lawful  means,  in which  case this  Lease  shall  terminate  and  Tenant  shall
immediately  surrender  possession  of the Premises to  Landlord.  In such event
Landlord  shall be  entitled  to recover  from  Tenant all  damages  incurred by
Landlord by reason of Tenant's default  including,  but not limited to, the cost
of  recovering  possession of the  Premises;  expenses of  reletting,  including
necessary renovation and alteration of the Premises;  reasonable attorney's fees
and costs; any real estate commissions and costs actually paid; the worth at the
time of award by the court  having  jurisdiction  thereof of the amount by which
the unpaid rent for the balance of the term after the time of such award exceeds
the amount of such rental loss for the same period that Tenant  proves  could be
reasonably avoided;  that portion of the leasing commission paid by Landlord and
applicable to the unexpired term of this Lease.  Unpaid  installments of rent or
other  sums  shall  bear  interest  from the  date due at the rate of ten  (10%)
percent  per annum.  In the event  Tenant  shall have  abandoned  the  Premises,
Landlord  shall have the option of (a) taking  possession  of the  Premises  and
recovering from Tenant the amount specified in this paragraph, or (b) proceeding
under the provisions of the following Article 26(b).

         (b) Maintain  Tenant's  right to  possession,  in which case this Lease
shall  continue  in effect  whether  or not  Tenant  shall  have  abandoned  the
Premises.  In such event Landlord shall be entitled to enforce all of Landlord's
rights and remedies under this Lease, including the right to recover the rent as
it becomes due hereunder.

         (c) Pursue any other  remedy now or  hereafter  available  to  Landlord
under the laws or  judicial  decision  of the State in which  the  Premises  are
located.

27. EMINENT DOMAIN. If more than twenty-five  percent (25%) of the floor area of
the building of which the Premises are a part shall be taken or  appropriated by
any public or quasi-public authority under the power of eminent domain, Landlord
shall have the right,  at its election,  to terminate  this Lease.  If more than
twenty-five  percent (25%) of the parking area appurtenant to the building is so
taken or  appropriated,  then  either  party  hereto  shall  have  the  right to
terminate  this  lease.   If  any  portion  of  the  Premises  is  so  taken  or
appropriated,  then Tenant shall have the right,  at its election,  to terminate
this  Lease.  In the event  that  there is any  taking or  appropriation  of any
portion of the Building,  or of the real  property on which it is situated,  and
this  Lease  is not  terminated  pursuant  to the  provisions  hereof,  any sums
thereafter due as rental under this Lease shall be equitably reduced.

Any award paid in connection with any such taking shall belong to and be paid to
Landlord, except that Tenant shall receive from the award the following:

         a. A sum  attributable to Tenant's  improvements or alterations made to
the  Premises  by  Tenant  in  accordance   with  this  Lease,   which  Tenant's
improvements  or  alterations  Tenant has the right to remove from the  Premises
pursuant to the provisions of this Lease but elects not to remove; or, if Tenant
elects  to remove  any such  Tenant's  improvements  or  alterations,  a sum for
reasonable  removal or  relocation  costs not to exceed the market value of such
improvements or alterations.

                                       12




         b. A sum paid to Tenant from the condemnor for loss of goodwill.

         c.  A sum  attributable  to  that  portion  of the  award  constituting
severance  damages for the  restoration  of the Premises,  unless this Lease has
been terminated pursuant to the provisions hereof.

28.  OFFSET  STATEMENT.  Tenant shall at any time and from time to time upon not
less than ten (10) days prior written notice from Landlord execute,  acknowledge
and deliver to Landlord a statement in writing,  (a) certifying  that this Lease
is unmodified and in full force and effect (or, if modified,  stating the nature
of such  modification and certifying that this Lease as so modified,  is in full
force and effect), and the date to which the rentals and other charges are paid,
and (b)  acknowledging  that there are not, to Tenant's  knowledge,  any uncured
defaults on the part of the Landlord  hereunder,  or specifying such defaults if
any are  claimed.  Any such  statement  may be  relied  upon by any  prospective
purchaser or  encumbrancer  of all or any portion of the real  property of which
the Premises are a part.

29. PARKING.  Tenant shall have the right to use in common with other tenants or
occupants of the Building the parking facilities of the Building.  Tenant agrees
that  Tenant's  employees  and agents  will not park in any area  designated  by
Landlord  for visitor  parking or no parking.  In the event of violation of this
provision,  Tenant  agrees that the  offending  vehicle may be towed away at the
expense of Tenant. Ninety-four (94) parking spaces will be assigned to Tenant at
Tenant's  or  Landlord's  request at such time as general  parking is  regularly
inadequate, which assignment shall not be unreasonably withheld.

30.  AUTHORITY OF TENANT.  Tenant and each  individual  executing  this Lease on
behalf of Tenant  represents and warrants that he is duly  authorized to execute
and deliver this Lease.

31.  GENERAL PROVISIONS.

         (a) Plats and Riders.  Clauses, plats and riders, if any, signed by the
Landlord  and the  Tenant  and  endorsed  on or fixed to this  Lease  are a part
hereof.

         (b) Waiver.  The waiver by Landlord of any term,  covenant or condition
herein  contained  shall not be deemed to be a waiver of such term,  covenant or
condition on any  subsequent  breach of the same or any other term,  covenant or
condition herein  contained.  The subsequent  acceptance of rentals hereunder by
Landlord shall not be deemed to be a waiver of any preceding breach by Tenant of
any  term,  covenant  or  condition  of this  Lease,  regardless  of  Landlord's
knowledge of such preceding breach at the time of the acceptance of such rent.

         (c) Notices. All notices and demands which may or are to be required or
permitted  to be  given  by  either  party to the  other  hereunder  shall be in
writing.  All notices and demands by the Landlord to the Tenant shall be sent by
United States Mail, postage prepaid, addressed to the Tenant at the Premises, or
to such other place as Tenant may from time to time designate in a notice to the
Landlord. All notices and demands by the Tenant to the Landlord shall be sent by
United States Mail, postage prepaid,  addressed to the Landlord at the Office of
the Building,  or to such other person or place as the Landlord may from time to
time designate in a notice to the Tenant.

                                       13




         (d) Joint Obligation.  If there be more than one Tenant the obligations
hereunder imposed upon Tenants shall be joint and several.

         (e) Marginal Headings. The marginal headings and titles to the Articles
of this  Lease are not a part of this  Lease and shall  have no effect  upon the
construction or interpretation of any part hereof.

         (f) Time.  Time is of the essence of this Lease and each and all of its
provisions in which performance is a factor.

         (g)  Successors  and  Assigns.  The  covenants  and  conditions  herein
contained,  subject to the  provisions as to  assignment,  apply to and bind the
heirs, successors, executors, administrators and assigns of the parties hereto.

         (h) Recordation. Neither Landlord nor Tenant shall record this Lease or
a short form  memorandum  hereof without the prior written  consent of the other
party.

         (i) Quiet  Possession.  Upon Tenant paying the rent reserved  hereunder
and observing and performing all of the covenants,  conditions and provisions on
Tenant's  part to be observed and performed  hereunder,  Tenant shall have quiet
possession  of the  Premises  for the  entire  term  hereof,  subject to all the
provisions of this Lease.

         (j) Late Charge. Tenant hereby acknowledges that late payment by Tenant
to Landlord  or rent or other sums due  hereunder  will cause  Landlord to incur
costs  not  contemplated  by this  Lease,  the  exact  amount  of which  will be
extremely  difficult to ascertain.  Such costs include,  but are not limited to,
processing  and accounting  charges,  and late charges which may be imposed upon
Landlord by terms of any  mortgage or trust deed  covering  the  Premises or the
Building accordingly.  Accordingly,  if any amounts due from Tenant shall not be
received by Landlord or Landlord's  designee  within ten (10) days after written
notice  that said amount is past due,  then Tenant  shall pay to Landlord a late
charge equal to five percent (5%) of such  overdue  amount.  The parties  hereby
agree that such late  charges  represent a fair and  reasonable  estimate of the
cost  that  Landlord  will  incur by  reason  of the  late  payment  by  Tenant.
Acceptance of such late charges by the Landlord  shall in no event  constitute a
waiver of Tenant's  default  with respect to such  overdue  amount,  nor prevent
Landlord from exercising any of the other rights and remedies granted hereunder.

         (k) Prior Agreements.  This Lease contains all of the agreements of the
parties  hereto with  respect to any matter  covered or mentioned in this Lease,
and no prior agreements or understanding pertaining to any such matters shall be
effective for any purpose. No provision of this Lease may be amended or added to
except  by an  agreement  in  writing  signed  by the  parties  hereto  or their
respective successors in interest.  This Lease shall not be effective or binding
on any party until fully executed by both parties hereto.

         (l) Inability to Perform.  Except as provided in Paragraph 4 or Exhibit
A to this Lease,  this Lease and the  obligations of the Tenant  hereunder shall
not be affected or impaired because the Landlord is unable to fulfill any of its
obligations  hereunder or is delayed in doing so, if such  inability or delay is
caused by reason of strike, labor disputes, civil disobedience,  acts of God, or
any other cause beyond the reasonable control of the Landlord.

                                       14




         (m) Attorneys'  Fees. In the event of any action or proceeding  brought
by either party against the other under this Lease,  the prevailing  party shall
be  entitled  to  recover  all  costs  and  expenses  including  the fees of its
attorneys in such action or  proceeding  in such amount as the court may adjudge
reasonable.

         (n)  Sale of  Building  by  Landlord.  In the  event of any sale of the
Building,  Landlord  shall be and is hereby  entirely  freed and relieved of all
liability  under any and all of its  covenants and  obligations  contained in or
derived from this Lease arising out of any act, occurrence or omission occurring
after the  consummation  of such sale;  and the  purchaser,  at such sale or any
subsequent sale of the Building shall be deemed,  without any further  agreement
between the parties or their  successors  in interest or between the parties and
any such  purchaser,  to have assumed and agreed to carry out any and all of the
covenants and  obligations of the Landlord under this Lease.  In connection with
any such sale,  Landlord agrees to obtain Purchaser's express written assumption
of this Lease.

         (o) This lease  shall be prior to any  encumbrance  recorded  after the
date of this Lease affecting the Building, other improvements, and land of which
the Premises  are a part.  If,  however,  a lender  requires  that this Lease be
subordinate  to any such  encumbrance,  this Lease shall be  subordinate to that
encumbrance,  if Landlord first obtains from the lender,  in favor of tenant,  a
written agreement that provides substantially the following:

         "As long as Tenant  performs  its  obligations  under  this  Lease,  no
foreclosure  of,  deed  given  in lieu of  foreclosure  of,  or sale  under  the
encumbrance,  and no steps or  procedures  taken  under the  encumbrance,  shall
affect Tenant's rights under this Lease."

Tenant shall attorn to any purchaser at any foreclosure  sale, or to any grantee
or transferee designated in any deed given in lieu of foreclosure.  Tenant shall
execute the written agreement and any other documents  required by the lender to
accomplish the purposes of this paragraph.

         (p) Name. Tenant shall not use the name of the Building for any purpose
other than as an address of the  business to be  conducted  by the Tenant in the
Premises.

         (q)  Separability.  Any provision of this Lease which shall prove to be
invalid,  void or illegal shall in no way affect, impair or invalidate any other
provision hereof and such other provision shall remain in full force and effect.

         (r)  Cumulative  Remedies.  No remedy or  election  hereunder  shall be
deemed  exclusive but shall,  wherever  possible,  be cumulative  with all other
remedies at law or in equity.

         (s) Choice of Law.  This  Lease  shall be  governed  by the laws of the
State of California.

         (t)  Signs  and  Auctions.  Tenant  shall  not  place any sign upon the
Premises or Building or conduct any auction  thereon  without  Landlord's  prior
written consent.

32.  OPTION TO RENEW.  If Tenant is not in  default  under  this lease as of one
hundred  twenty (120) days prior to the  expiration  of the initial term hereof,
then  Tenant  shall  have an  option to  extend  the term of this  lease for one
additional  period of five (5) years. Such option must be exercised by Tenant by
written notice to Landlord, which notice must be given not less than one hundred
twenty (120) days prior to the expiration of the initial lease term.

                                       15




If Tenant is then in default under the terms of this Lease, or fails to exercise
said  option in the manner and within the time above set forth,  then this Lease
shall expire at the end of the initial five-year (5) term.

If Tenant is entitled  to, and in fact does  exercise  this option in the manner
and within  the time  limits  herein set forth,  and if Tenant is not in default
under the terms of this lease as of the expiration of the initial  five-year (5)
term, then this Lease shall automatically be extended for an additional five (5)
years,  commencing at the expiration of the initial five-year (5) term, and each
and every term, provision and covenant of this Lease, except as to rental, shall
be applicable during such five-year extended term.

During such  extended  term,  rental shall be that which would have obtained had
the original term contained the renewal period.

33. OPTION TO LEASE  ADDITIONAL  SPACE.  Landlord shall provide Tenant notice of
any  available  space on the  second  level of the  East  Wing of the  Building,
whereupon  Tenant shall have ten days to exercise its option to lease said space
at rates and on terms  equivalent  to that  contained  in this Lease,  but in no
event  shall  the term be less  than one (1) year.  Landlord  further  agrees to
restrict  Lease terms to other Tenants on the second level of the East Wing to a
maximum of three years.

34.  OPTION TO  PURCHASE.  If Tenant is not in  default  under the terms of this
Lease as of one hundred eighty (180) days prior to the expiration of the initial
five-year  (5) term  hereof,  then Tenant  shall have an option to purchase  the
Building of which the leased  premises are a part,  on the  following  terms and
conditions:

         (a) The option  must be  exercised  by written  notice  from  Tenant to
Landlord,  which  notice must be given not later than one hundred  eighty  (180)
days prior to the  expiration  of the  initial  five-year  lease  term.  If such
written notice is not given, this option shall terminate.

         (b) If Tenant  exercises this option,  then the purchase  price,  which
shall be payable in cash at the time of escrow close (unless Landlord is willing
to negotiate and accept payment terms other than cash), shall be the fair market
value of the Building.  Fair market value shall be  established by the agreement
of Landlord and Tenant.  Provided  that if they are unable to agree on or before
one hundred  twenty (120) days before the  expiration  of the initial  five-year
lease term,  then Landlord and Tenant shall each appoint an  appraiser,  the two
appraisers shall appoint a third appraiser,  and a mutual decision of any two of
said three  appraisers  shall establish fair market value, and thus the purchase
price for the Building.

         Each party shall pay the costs and fees of their respective  appraiser,
and they  shall  share  equally  in the costs  and fees of the third or  neutral
appraiser.

         (c) Escrow shall close, and the sale shall be consummated,  at any time
during the last five (5) calendar days of the initial five-year (5) lease term.

         (d) Landlord  reserves the right to enter into a tax deferred  exchange
under IRC Section 1031. In such event,  Tenant agrees to cooperate with Landlord
in consummating such tax

                                       16




deferred exchange, provided that Tenant shall not incur any costs or expenses in
connection with such tax deferred exchange.

         (e) If Tenant  exercises  this purchase  option,  Tenant agrees that it
will not  receive  any  equitable  interest  in the  Building  by reason of such
exercise of option,  and that Tenant shall not thereby be entitled to any rights
as  a  purchaser   in   possession.   Rather,   all  rights,   liabilities   and
responsibilities  of Landlord and Tenant between the date of option exercise and
the date of escrow  close  shall be those of Landlord  and Tenant,  and shall be
determined exclusively under the provisions of this Lease, and Tenant shall have
no rights as a purchaser in possession.

         (f)  Time,  as set forth in the  various  provisions  of this  purchase
option,  is expressly  declared to be of the essence of this option,  and of the
purchase contract that will result from any exercise thereof.

35.  BROKERS.  Tenant  warrants that it has had no dealings with any real estate
broker or agents in connection with the negotiation of this Lease excepting only
James C.  Westenbroek and James J. Williams and it knows of no other real estate
broker or agent who is entitled to a commission in connection with this Lease.

The  parties  hereto  have  executed  this  Lease at the  place and on the dates
specified immediately adjacent to their respective signatures.

If this Lease has been filled in, it has been  prepared for  submission  to your
attorney for his approval.  No  representation  or recommendation is made by the
real estate broker or its agents or employees as to the legal sufficiency, legal
effect, or tax consequences of this Lease or the transactions relating thereto.


                                                  SRP Limited Partnership
                                             -----------------------------------

                                             By:
                                                --------------------------------

Address    120 N. Redwood Drive              By:
        -------------------------------         --------------------------------
       San Rafael, California                             "Landlord"
- --------------------------------------


                                                Fair, Isaac & Company, Inc.
                                             -----------------------------------

                                             By:
                                                --------------------------------

Address    55 Mitchell Boulevard             By:
        -------------------------------         --------------------------------
       San Rafael, California                             "Tenant"
- --------------------------------------

                                       17






                                SMITH RANCH PLAZA

                                 WORK AGREEMENT

                              EXHIBIT "A" TO LEASE


FAIR,  ISAAC COMPANY,  INC.  (hereinafter  called  "Tenant") and S.R.P.  LIMITED
PARTNERSHIP  (hereinafter  called "Landlord") are executing  simultaneously with
this Work Agreement,  the written Lease to which this Work Agreement is attached
covering  the  premises  described  in  said  Lease  (hereinafter   called  "the
premises").

To induce  Tenant to enter  into said  Lease  (which is hereby  incorporated  by
reference to the extent that the provisions of this agreement may apply thereto)
and in consideration of the mutual covenants hereinafter contained, Landlord and
Tenant mutually agree as follows:

         1. TENANT'S PLANS AND SPECIFICATIONS

         (a) Except to the extent otherwise  provided in  subparagraphs  (b) and
(c) of this paragraph,  Landlord agrees to furnish at its sole cost and expense,
all architectural, mechanical, and electrical engineering plans required for the
performance of the work  (hereinafter  referred to as "Building  Standard Work")
hereinbelow described,  including complete detailed plans and specifications for
Tenant's  partition  layout,  reflected  ceiling,  heating and air conditioning,
electrical  outlets and  switches and  telephone  outlets.  Design  services are
limited to one schematic  design plus one set of revisions  based on a review of
the schematic  design.  Further  revisions will be at the expense of the Tenant.
The layout shall be approved by each of the parties  hereto and attached to this
Lease and shall become a part thereof and shall be described as Exhibit "B".

         (b)  It  is  understood  and  agreed  that  Tenant  will  require  work
(hereinafter  referred to as "Building  Non-Standard Work") different from or in
addition to said  Building  Standard  Work.  In such event,  any  architectural,
mechanical, and electrical plans and specifications required shall be furnished,
at Tenant's sole cost and expense to Landlord's office for approval.

         (c) It is understood and agreed that any interior decorating  services,
such as selection of special wall  coverings,  fixtures,  non-building  standard
carpet,  and  any or  all  other  decorator  items  required  by  Tenant  in the
performance of said work referred to hereinabove  in  subparagraphs  (a) and (b)
shall be at the Tenant's sole cost and expense.

         (d) It is  understood  and  agreed  that all plans  and  specifications
referred  to  hereinabove  in  subparagraphs  (a)  and (b)  are  subject  to the
Landlord's approval,  which approval shall not be unreasonably withheld.  Tenant
also agrees that,  when  requested  by  Landlord's  office,  Tenant will furnish
complete information respecting Tenant's  requirements.  Schematic plans will be
approved  by Tenant on or before  October  27,  1983,  with  complete  plans and
specifications approved by Tenant on or before October 31, 1983.

                                       18




         2. BUILDING STANDARD WORK AT LANDLORD'S COST AND EXPENSE

         Landlord  will, at its sole cost and expense,  furnish and install Four
Hundred, Four Thousand, One Hundred,  Forty-three  ($404,143.00) in value of the
work as indicated on Tenant's final approved plans,  which portion is defined as
"Building Standard Work".

         The following categories are an indication of normal building standard.
Because of agreement on an improvement  budget,  these  descriptions are only to
indicate type and quality of  materials,  and are not to be utilized as quantity
allowances.

         (a) Building  standard  interior  partitions,  ceiling high, 5/8" vinyl
clad gypsum  board,  with rubber base on both sides of 2 1/2 " metal stud, in an
amount equal to one lineal foot per fifteen square feet of office area. Demising
partitions  between  tenants to be full height (floor to suspended  ceiling) and
sound-insulated.

         (b) Building  standard full height  interior  doors,  3" X 9" X 1 3/4",
solid core,  stain grade oak veneer face with K.D.  metal frame,  Baldwin  Lever
latchset  design,  in an amount equal to one per 350 square feet of office area,
and a maximum of one  building  standard  full height suite  entrance  door with
hardware  including  Baldwin Lever  lockset  design,  closer and deadbolt.  (All
hardware to have oil rubbed bronze finish.)

         (c) Building  standard two foot by four foot  fluorescent  fixture at a
maximum rate of one per eighty square feet of area,  including switches for said
fixtures, but not to exceed one switch for each private office or room.

         (d) Building standard electrical duplex wall outlets,  with cover plate
in an amount equal to one duplex per one-hundred square feet of office area.

         (e) Building standard  telephone wall outlets,  with cover plate, in an
amount equal to one per two-hundred square feet of office area.

         (f) Building standard blinds on all exterior office windows.

         (g) Building standard  ceiling,  exposed grid,  mechanically  suspended
white 2 X 2 tegular acoustic panels.

         (h) Building standard heating, ventilating, and air conditioning,  with
duct work,  supply grilles,  return.  and thermostats,  served by a water source
heat pump system to provide air  conditioning  suited to normal  general  office
occupancy, with a minimum area for each zone of seven hundred fifty square feet.
Tenant will be  required to pay  additional  charges if its  application  of the
space necessitates excess zoning or capacity.

         (i) Building standard carpet in colors uniform for each floor.

         (j) Automatic  sprinkler  system with building  standard  recessed-type
head, chrome plated.

                                       19




         3. BUILDING NON-STANDARD WORK AT TENANTIS COST AND EXPENSE

         Provided  Tenant's plans and  specifications  are furnished by the date
provided  hereinabove in Paragraph  l(d) and approved by Landlord,  the Landlord
shall cause Tenant's "Building  Non-Standard Work" to be installed by Landlord's
contractor,  but at  Tenant's  sole cost and expense for any amount in excess of
Ninety-Five  Thousand,  Eight Hundred  Fifty-Seven  Dollars ($95,857).  Prior to
commencing  any such work,  Landlord,  its  contractor,  or its  architects  and
engineers,  shall submit to Tenant a written  estimate of the cost  thereof.  If
Tenant  shall  fail to  approve  any such  estimate  within  ten (10) days after
submission  thereof,  such failure  shall be deemed a disapproval  thereof,  and
Landlord's  contractor  shall not proceed with such work.  Tenant  agrees to pay
Landlord promptly upon being billed therefore,  the cost to Landlord of all such
excess  Building  Non-Standard  Work.  Such  bills may be  rendered  during  the
progress of the performance of the work and the furnishings and  installation of
the materials to which such bills relate. Landlord may require Tenant to deposit
the estimated cost of such work with Landlord prior to the  commencement of such
work.

         Within the demised  premises Tenant may select  different new materials
(except  exterior  window  coverings)  in  place  of  "Building  Standard  Work"
materials which would otherwise be initially furnished and installed by Landlord
for or in the  interior  of the  Premises  under  the  provisions  of this  Work
Agreement, provided such selection is indicated on said Tenant's final plans. No
such different new materials shall be furnished and installed in replacement for
any of Landlord's  "Building  Standard Work" materials  until  Landlord,  or its
contractor  and/or its  architects  shall have advised Tenant in writing of, and
Landlord or its contractor and/or its office planning  architects have agreed in
writing on, the work of such different new material and the  Landlord's  cost of
such replaced Landlord's "Building Standard Work" materials.

         All  amounts  payable  by  Tenant to  Landlord  pursuant  to  preceding
paragraphs  shall  be paid by  Tenant  promptly  after  the  rendering  of bills
therefore by Landlord or its  contractors to Tenant,  it being  understood  that
such bills may be rendered  during the progress of the  performance  of the work
and/or the  furnishings  and  installation  of the materials to which such bills
relate.  Any such different new materials  shall be surrendered by the Tenant to
the  Landlord at the end of the initial or other  expiration  of the term of the
Lease.

         4. COMPLETION AND RENTAL COMMENCEMENT DATE

         If the occupancy date of the Premises is delayed by:

         (a)      Tenant's  failure  to furnish  the  information  specified  in
                  Paragraph 1 hereof in a timely fashion; or

         (b)      Tenant's request for  substitution or additional  improvements
                  or changes in materials, finisher, or installations other than
                  those which are not Building Standard; or

         (c)      Tenant's changes in the final drawings and specifications; or

                                       20




         (d)      A delay in performance  of building  standard work as a result
                  of Tenant's  failure to approve written  estimates of the cost
                  of  non-building  standard work in accordance with Paragraph 3
                  hereof,

then the  commencement  of the term of the Office  Lease and the payment of rent
shall be unchanged.



LANDLORD:                                      TENANT:

S.R.P. LIMITED PARTNERSHIP                     FAIR, ISAAC AND COMPANY, INC.
- ---------------------------------              ---------------------------------

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

Dated ---------------------------              ---------------------------------


                                       21