NEWS RELEASE                                                        EXHIBIT 99.1
PS Business Parks, Inc.
701 Western Avenue
P.O. Box 25050
Glendale, CA  91221-5050
www.psbusinessparks.com
- --------------------------------------------------------------------------------

                               For Release:           Immediately
                               Date:                  July 12, 2002
                               Contact:               Mr. Jack Corrigan
                                                      (818) 244-8080, Ext. 663

PS Business Parks,  Inc. (AMEX - PSB) reported second quarter 2002 net income of
$9.5  million or $0.44 per share,  vs.  $10.9  million or $0.48 per share in the
prior year.  PSB also reported FFO per share of $0.90 for the second  quarter of
2002,  an increase of 13.9% from $0.79 per share in the prior year.  PSB'S "Same
Park" net operating income growth was 1.7% for the quarter.

GLENDALE,  CALIFORNIA - PS Business Parks, Inc. (AMEX: PSB),  reported operating
results for the second quarter ending June 30, 2002.

Net income  allocable to common  shareholders for the second quarter of 2002 was
$9.5 million or $0.44 per diluted share on revenues of $51.7 million compared to
$10.9  million or $0.48 per diluted  share on revenues of $41.1  million for the
same period in 2001.  Net income  allocable to common  shareholders  for the six
months  ended  June 30,  2002 was $22.6  million or $1.04 per  diluted  share on
revenues  of  $102.6  million   compared  to  net  income  allocable  to  common
shareholders  of $21.1  million or $0.92 per diluted  share on revenues of $80.6
million for the same period in 2001. Net income allocable to common shareholders
for the first six months of 2002  included  recognizing  a deferred  gain on the
disposition of a property of $5.4 million or $0.19 per share,  and the Company's
share of gains on  disposition of two buildings in its joint venture of $148,000
or less than $0.01 per share.

Net income per diluted  share for the second  quarter of 2002 was $0.44 or $0.04
less than the same period in 2001.  The net income per diluted  share before the
recognition of the deferred gain on the  disposition of a property for the first
six  months of 2002 was $0.85 or $.07  less  than the same  period in 2001.  The
decreases  for both  periods  were the  result of an  increase  in  depreciation
expense  as a result of $305  million  of  property  acquisitions  in 2001.  The
increased  depreciation expense was partially offset by the net operating income
from the acquired properties, net of financing costs.

Funds from operations  ("FFO") for the second quarter of 2002 were $26.2 million
or $0.90 per share  compared  to $23.7  million  or $0.79 per share for the same
period in 2001.  This  represents an increase of 13.9% in FFO per share based on
29.1 million and 30.0 million  weighted  average shares  outstanding  during the
second quarter of 2002 and 2001, respectively. FFO for the six months ended June
30, 2002 was $51.3 million or $1.77 per share compared to $46.4 million or $1.54
per share for the same period in 2001.  This  represents an increase of 14.9% in
FFO per share based on 29.1 million and 30.2  million  weighted  average  shares
outstanding during the six months ended June 30, 2002 and 2001 respectively. FFO
and FFO per share exclude the gain on  disposition of real estate and marketable
securities,  the Company's share of gains from dispositions in its joint venture
and the  accrual  of  straight  line  rents,  all of which are  included  in the
calculation of net income.

The  growth in FFO per  share is due  primarily  to net  operating  income  from
acquisitions  completed  during  2001  and a  reduction  in  the  number  of the
Company's  outstanding common shares.  Acquisitions and the repurchase of shares
were financed  primarily with existing cash,  issuance of preferred  stock,  low
cost debt and retained cash.  These factors were augmented by the performance of
the Company's "Same Park" operations.






Property Operations
- -------------------

In order  to  evaluate  the  performance  of the  Company's  overall  portfolio,
management  analyzes  the  operating   performance  of  a  consistent  group  of
properties  (12.0 million net rentable square feet).  These  properties in which
the Company currently has an ownership interest (herein referred to as the "Same
Park" facilities) have been owned and operated by the Company for the comparable
periods.  The "Same Park" facilities  represent  approximately 81% of the square
footage of the Company's wholly-owned portfolio at June 30, 2002.

The following tables summarize the pre-depreciation historical operating results
of the "Same Park" facilities and the entire portfolio, excluding the effects of
accounting for rental income on a straight-line basis.

                "Same Park" Facilities (12.0 million square feet)
                -------------------------------------------------




                                                                     Three Months Ended
                                                                          June 30,
                                                           --------------------------------------
                                                                  2002                2001             Change
                                                           ------------------  ------------------  --------------
                                                                                          
  Rental income (1)....................................      $  38,237,000       $  37,510,000          1.9%
  Cost of operations...................................         10,098,000           9,846,000          2.6%
                                                           ------------------  ------------------  --------------
  Net operating income.................................      $  28,139,000       $  27,664,000          1.7%
                                                           ==================  ==================  ==============
  Gross margin (2).....................................          73.6%               73.8%             (0.2%)
  Weighted average for period:
  ----------------------------
      Occupancy........................................          94.7%               96.0%             (1.3%)
      Annualized realized rent per occupied sq. ft.(3).          $13.50              $13.06             3.4%

===================================================================================================================
                                                                      Six Months Ended
                                                                          June 30,
                                                           --------------------------------------
                                                                  2002                2001             Change
                                                           ------------------  ------------------  --------------

  Rental income (1)....................................      $  75,885,000       $  74,283,000          2.2%
  Cost of operations...................................         19,951,000          19,613,000          1.7%
                                                           ------------------  ------------------  --------------
  Net operating income.................................      $  55,934,000       $  54,670,000          2.3%
                                                           ==================  ==================  ==============
  Gross margin (2).....................................          73.7%               73.6%              0.1%

  Weighted average for period:
  ----------------------------

      Occupancy........................................          94.9%               96.3%             (1.4%)
      Annualized realized rent per occupied sq. ft.(3).          $13.38              $12.90             3.7%



(1) Rental income does not include the effect of straight-line accounting.

(2) Gross margin is computed by dividing property net operating income by rental
    income.

(3) Realized  rent  per  square foot represents the  actual revenues  earned per
    occupied square foot.





                           Total Portfolio Statistics
                           --------------------------



                                                                     Three Months Ended
                                                                          June 30,
                                                           --------------------------------------
                                                                  2002                2001             Change
                                                           ------------------  ------------------  --------------
                                                                                          
  Rental income (1) (4)................................      $  49,846,000       $  39,768,000          25.3%
  Cost of operations (4)...............................         13,476,000          10,475,000          28.6%
                                                           ------------------  ------------------  --------------
  Net operating income.................................      $  36,370,000       $  29,293,000          24.2%
                                                           ==================  ==================  ==============

  Gross margin (2).....................................           73.0%              73.7%             (0.7%)

  Weighted average for period:
  ----------------------------
      Square footage...................................        14,579,000          12,810,000           13.8%
      Occupancy........................................          94.3%               95.8%             (1.5%)
      Annualized realized rent per occupied sq. ft.(3).          $14.50              $12.96             11.9%

===================================================================================================================
                                                                      Six Months Ended
                                                                          June 30,
                                                           --------------------------------------
                                                                  2002                2001             Change
                                                           ------------------  ------------------  --------------

  Rental income (1) (4)................................      $  98,763,000       $  77,791,000          27.0%
  Cost of operations (4)...............................         27,082,000          20,846,000          29.9%
                                                           ------------------  ------------------  --------------
  Net operating income.................................      $  71,681,000       $  56,945,000          25.9%
                                                           ==================  ==================  ==============
  Gross margin (2).....................................          72.6%               73.2%             (0.6%)

  Weighted average for period:
  ----------------------------
      Square footage...................................        14,579,000          12,706,000           14.7%
      Occupancy........................................          94.5%               96.1%             (1.6%)
      Annualized realized rent per occupied sq. ft.(3).          $14.35              $12.74             12.6%




(1) Rental income does not include the effect of straight-line accounting.

(2) Gross margin is computed by dividing property net operating income by rental
    income.

(3) Realized  rent  per  square  foot represents the actual revenues earned  per
    occupied square foot.

(4) Rental income ($307,000 and $774,000 for the  three  and  six  months  ended
    June 30,  2002),  cost of operations  ($150,000  and $370,000 for the  three
    and six months ended June 30, 2002), square footage (238,000), and occupancy
    (47%)  of  development  properties have  been  excluded from Total Portfolio
    Statistics.






Development Properties
- ----------------------

The Company has  developed  one office and one flex  facility that are currently
shell  complete and in the lease-up  phase.  The  projects  total  approximately
238,000 square feet and have an estimated  aggregate cost of  approximately  $25
million.  The office development consist of two buildings totaling 97,000 square
feet was completed in the second  quarter of 2001 in the Beaverton  submarket of
Portland,  Oregon and is 27%  leased.  There were no new leases  signed for this
facility during the six months ended June 30, 2002. The flex development consist
of two buildings  totaling  141,000  square feet in the  Chantilly  submarket of
Northern  Virginia  was  completed  in the fourth  quarter of 2000.  The Company
leased an additional 24,000 square feet during the second quarter of 2002 at the
Northern  Virginia  development  bringing the  development  to 78% leased.  Both
properties  are  classified as operating as of June 30, 2002 and the Company has
ceased capitalizing interest.

Line of Credit
- --------------

During the fourth quarter of 2001, the Company borrowed $100 million on its line
of credit.  During the second quarter, the Company used available cash to reduce
most of the outstanding balance on its line of credit to $10 million at June 30,
2002. The Company expects to payoff the balance during the third quarter and use
the line of credit to maintain the  flexibility to take advantage of acquisition
opportunities.

Financial Condition
- -------------------

The Company  continued  to maintain  financial  strength  and  flexibility.  The
following are the Company's key financial ratios with respect to its leverage at
June 30, 2002.

     Ratio of FFO to fixed charges for the quarter (1)............      22.9x
     Ratio of FFO to fixed charges year-to-date (1)...............      21.7x
     Ratio of FFO to fixed  charges  and  preferred  distributions
     for the quarter and year-to-date (2)..........................     3.6x

     Debt and  preferred  equity to total market  capitalization
     (based on the common stock price of $34.95 at June 30, 2002)..      31%
     Available under line of credit at June 30, 2002............... $90 million


(1)  Fixed  charges  include  interest  expense  of  $1,432,000  ($2,983,000
     year-to-date) and capitalized interest of $144,000 ($288,000  year-to-date)
     for the second quarter of 2002.

(2)  Preferred  distributions include amounts paid to preferred  shareholders of
     $3,933,000  ($7,550,000  year-to-date)  and  preferred  unitholders  in the
     operating  partnership  of  $4,413,000  ($8,825,000  year-to-date)  for the
     second quarter of 2002.





Joint Venture Property Dispositions
- -----------------------------------

Through a joint  venture with GE Capital  Corporation,  the Company  holds a 25%
equity interest in an industrial park in the City of Industry,  submarket of Los
Angeles County.  Initially the joint venture consisted of 14 buildings  totaling
294,000 square feet.  During the second  quarter,  the joint venture sold two of
the  buildings  totaling  47,000 square feet.  The Company  recognized a gain of
$148,000 on the  disposition of the two buildings which is included in equity in
income of joint venture. The gain has been excluded from funds from operations.

The joint venture has a variable rate mortgage  obligation of approximately $5.8
million which  currently  bears  interest at 5.45%.  The Company has  guaranteed
repayment of the mortgage  under certain  conditions,  but it is not included in
the Company's total liabilities.

Property Dispositions
- ---------------------

As previously  announced in the fourth quarter of 2001,  the Company  identified
two  properties  totaling  199,000  square  feet  that do not meet  its  ongoing
investment strategy.  These properties are currently being marketed. The Company
expects net proceeds to approximate  book value of $9.6 million,  although there
can be no assurance  that a sale will be  consummated  or such  proceeds will be
realized.

Company Information
- -------------------

PSB is a self-advised and self-managed  equity real estate investment trust that
acquires,  develops,  owns and operates commercial  properties,  primarily flex,
multi-tenant  office and industrial  space.  The Company defines "flex" space as
buildings that are configured  with a combination of office and warehouse  space
and can be designed to fit an almost limitless number of uses (including office,
assembly, showroom,  laboratory, light manufacturing and warehouse space). As of
June 30, 2002, PSB wholly-owned  approximately  14.8 million net rentable square
feet of commercial space with approximately 3,300 customers located in 9 states,
concentrated  primarily in California  (4,673,000 sq. ft.), Texas (2,983,000 sq.
ft.),  Oregon  (1,973,000  sq. ft.),  Virginia  (2,621,000 sq. ft.) and Maryland
(1,769,000 sq. ft.).

Forward-Looking Statements
- --------------------------

When  used  within  this  press  release,   the  words  "expects,"   "believes,"
"anticipates,"  "should,"  "estimates," and similar  expressions are intended to
identify "forward-looking  statements." Such forward-looking  statements involve
known and unknown risks,  uncertainties,  and other factors, which may cause the
actual results and  performance  of the Company to be materially  different from
those  expressed  or implied in the  forward-looking  statements.  Such  factors
include the impact of competition  from new and existing  commercial  facilities
which could impact rents and occupancy levels at the Company's  facilities,  the
Company's  ability to evaluate,  finance,  and integrate  acquired and developed
properties  into the Company's  existing  operations;  the Company's  ability to
effectively  compete in the markets that it does  business in; the impact of the
regulatory  environment  as  well  as  national,   state,  and  local  laws  and
regulations   including,   without  limitation,   those  governing  Real  Estate
Investment Trusts;  the impact of general economic  conditions upon rental rates
and occupancy levels at the Company's facilities;  the availability of permanent
capital at  attractive  rates,  the outlook and actions of Rating  Agencies  and
risks  detailed  from  time to  time in the  Company's  SEC  reports,  including
quarterly  reports on Form 10-Q,  reports on Form 8-K and annual reports on Form
10-K.





Additional  information about PS Business Parks,  Inc.  including more financial
analysis of the second quarter's operating results is available on the Internet.
The Company's web site is www.psbusinessparks.com.
                          -----------------------

A conference call is scheduled for Monday,  July 15, 2002 at 10:00 a.m. (PDT) to
discuss these results. The toll free number is 1-800-399-4409, the conference ID
is 4718130.  An instant replay of the conference call will be available  through
July 22,  2002 at  1-800-642-1687.  The  replay can also be  accessed  under the
"Investor Relations" section of our web site.

Additional financial data attached.


                             PS BUSINESS PARKS, INC.
                             Selected Financial Data




                                                                             At June 30, 2002        At December 31, 2001
                                                                            ---------------------   ----------------------
Balance Sheet Data:
- -------------------

                                                                                              
    Cash and cash equivalents.........................................       $       704,000           $     3,076,000
    Marketable securities.............................................       $     5,784,000           $     9,134,000
    Note receivable...................................................       $       200,000           $     7,450,000
    Properties held for disposition, net..............................       $     9,629,000           $     9,498,000
    Real estate facilities, before accumulated depreciation...........       $ 1,251,336,000           $ 1,237,691,000
    Total assets......................................................       $ 1,146,403,000           $ 1,169,955,000
    Total debt........................................................       $    87,932,000           $   165,145,000
    Minority interest - common units..................................       $   165,197,000           $   162,141,000
    Minority interest - preferred units...............................       $   197,750,000           $   197,750,000
    Preferred stock...................................................       $   170,988,000           $   121,000,000
    Common shareholders' equity.......................................       $   487,684,000           $   478,731,000

    Total common shares outstanding at period end.....................            21,549,000                21,540,000
                                                                            =====================   ======================
    Total  common  shares   outstanding   at  period  end,   assuming
      conversion of all Operating Partnership units into common stock.            28,854,000                28,845,000
                                                                            =====================   ======================






                             PS BUSINESS PARKS, INC.
                             Selected Financial Data





                                                          For the Three Months Ended          For the Six Months Ended
                                                                   June 30,                           June 30,
                                                      ----------------------------------- -----------------------------------
                                                             2002             2001              2002             2001
                                                      -----------------  ---------------- ----------------- -----------------
                                                                                                
Revenues:
  Rental income.....................................   $   50,930,000    $   40,281,000   $  101,274,000    $   78,674,000
  Facility management fees primarily from affiliates          191,000           168,000          386,000           329,000
  Business services.................................           28,000            76,000           69,000           233,000
  Equity in income of joint venture.................          207,000                 -          249,000                 -
  Interest and dividend income......................          355,000           557,000          600,000         1,321,000
                                                      -----------------  ---------------- ----------------- -----------------
                                                           51,711,000        41,082,000      102,578,000        80,557,000
                                                      -----------------  ---------------- ----------------- -----------------

Expenses:
  Cost of operations................................       13,626,000        10,475,000       27,452,000        20,846,000
  Cost of facility management.......................           45,000            37,000           90,000            73,000
  Cost of business services.........................          112,000           129,000          288,000           313,000
  Depreciation and amortization.....................       14,313,000         9,733,000       28,290,000        19,379,000
  General and administrative........................        1,068,000           992,000        2,204,000         2,120,000
  Interest expense..................................        1,432,000           157,000        2,983,000           394,000
                                                      -----------------  ---------------- ----------------- -----------------
                                                           30,596,000        21,523,000       61,307,000        43,125,000
                                                      -----------------  ---------------- ----------------- -----------------

Income before income from gain on disposition of
   real estate, gain on investments and minority           21,115,000        19,559,000       41,271,000        37,432,000
   interest........................................
  Gain on disposition of real estate................                -                 -        5,366,000                 -
  Gain on investment in marketable securities.......                -                 -           25,000            15,000
                                                      -----------------  ---------------- ----------------- -----------------
Income before minority interest.....................       21,115,000        19,559,000       46,662,000        37,447,000
  Minority interest in income - preferred units.....       (4,413,000)       (3,186,000)      (8,825,000)       (6,373,000)
  Minority interest in income - common units........       (3,230,000)       (3,543,000)      (7,663,000)       (6,779,000)
Net income..........................................   $   13,472,000    $   12,830,000   $   30,174,000    $   24,295,000
                                                      =================  ================ ================= =================

Net income allocation:
   Allocable to preferred shareholders..............   $    3,933,000    $    1,903,000   $    7,550,000    $    3,175,000
   Allocable to common shareholders.................        9,539,000        10,927,000       22,624,000        21,120,000
                                                      -----------------  ---------------- ----------------- -----------------
                                                       $   13,472,000    $   12,830,000   $   30,174,000    $   24,295,000
                                                      =================  ================ ================= =================

Net income per common share - diluted:                 $         0.44    $         0.48   $         1.04    $         0.92
                                                      =================  ================ ================= =================
 Weighted average common shares outstanding -
  diluted:..........................................       21,799,000        22,679,000       21,774,000        22,885,000
                                                      =================  ================ ================= =================








                             PS BUSINESS PARKS, INC.
                  Computation of Funda from Operations ("FFO")




                                                                  Three Months Ended                  Six Months Ended
                                                                       June 30,                           June 30,
                                                          ---------------------------------- -----------------------------------
                                                                2002              2001             2002              2001
                                                          ---------------- ----------------- ---------------- ------------------
                                                                                                  
Net income allocable to common shareholders..............  $   9,539,000    $  10,927,000     $  22,624,000    $  21,120,000
    Less:  Gain on investment in marketable securities...              -                -           (25,000)         (15,000)
    Less:  Gain on disposition of real estate............              -                -        (5,366,000)               -
    Less:  Equity income from sale of joint venture
      properties.........................................       (148,000)               -          (148,000)               -
    Less:  Straight line rent adjustment.................       (777,000)        (513,000)       (1,737,000)        (883,000)
    Plus:  Depreciation and amortization.................     14,313,000        9,733,000        28,290,000       19,379,000
    Plus:  Depreciation from unconsolidated joint venture         20,000                -            40,000                -
    Plus:  Minority interest in income - common units....      3,230,000        3,543,000         7,663,000        6,779,000
                                                          ---------------- ----------------- ---------------- ------------------
Consolidated FFO allocable to common shareholders........  $  26,177,000    $  23,690,000     $  51,341,000    $  46,380,000
                                                          ================ ================= ================ ==================

Computation of Diluted FFO per Common Share (1):
- ------------------------------------------------

Consolidated FFO allocable to common shareholders........  $  26,177,000    $  23,690,000     $  51,341,000    $  46,380,000
                                                          ================ ================= ================ ==================

     Weighted average common shares outstanding..........     21,549,000       22,610,000        21,546,000       22,814,000
     Weighted average common OP units outstanding........      7,305,000        7,305,000         7,305,000        7,307,000
     Dilutive effect of stock options....................        250,000           69,000           228,000           71,000
                                                          ---------------- ----------------- ---------------- ------------------
Weighted  average common shares and OP units for purposes
  of computing fully-diluted FFO per common share........     29,104,000       29,984,000        29,079,000       30,192,000
                                                          ================ ================= ================ ==================

Fully diluted FFO per common share ......................  $        0.90    $        0.79     $        1.77    $        1.54
                                                          ================ ================= ================ ==================

Computation of Funds Available for Distribution
- -----------------------------------------------
  ("FAD") 2)
  ----------

Consolidated FFO allocable to common shareholders........  $  26,177,000    $  23,690,000     $  51,341,000    $  46,380,000
                                                          ================ ================= ================ ==================

Less capitalized expenditures:
     Maintenance capital expenditures....................     (1,776,000)        (650,000)       (2,618,000)      (1,223,000)
     Tenant improvements.................................     (2,532,000)        (709,000)       (4,695,000)      (1,638,000)
     Capitalized lease commissions.......................       (191,000)        (588,000)       (1,049,000)        (979,000)
                                                          ---------------- ----------------- ---------------- ------------------
Total capitalized expenditures...........................     (4,499,000)      (1,947,000)       (8,362,000)      (3,840,000)
                                                          ---------------- ----------------- ---------------- ------------------

FAD......................................................  $  21,678,000    $  21,743,000     $  42,979,000    $  42,540,000
                                                          ================ ================= ================ ==================
FAD per common share/OP unit.............................  $        0.74    $        0.73     $        1.48    $        1.41
                                                          ================ ================= ================ ==================



(1)  Funds from operations ("FFO") is a term defined by the National Association
     of Real Estate  Investment  Trusts,  Inc.  ("NAREIT")  by which real estate
     investment trusts ("REITs") may be compared. It is generally defined as net
     income before depreciation and extraordinary items. FFO computations do not
     factor out the REIT's  requirement to make either capital  expenditures  or
     principal  payments  on debt.  The  Company  excludes  straight  line  rent
     adjustments, gains/losses on disposition of real estate and gains/losses on
     sale of  marketable  securities to more  accurately  reflect cash flow from
     real  estate  operations.  Other  REITs may not make these  adjustments  in
     computing FFO.

(2)  Funds available for distribution ("FAD") is computed by deducting recurring
     capital   expenditures,   tenant   improvements  and  capitalized   leasing
     commissions from FFO.