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Schedule III - Real Estate and Accumulated Depreciation
12 Months Ended
Dec. 31, 2021
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]  
Schedule III - Real Estate and Accumulated Depreciation
SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION
December 31, 2021
 Initial CostGross Amounts at Which
Carried at Close of Period
Property LocationEncumb-
rances
Land and Improve-
ments
Buildings
and
Improve-
ments
Costs
Capitalized
Subsequent 
to
Acquisition/
Improvement
Land and Improve-
ments
Buildings
and
Improve-
ments
TotalAccumulated
Depreciation
Depreci-
ation
Life (1)
Date of
Acquisition
(A)/
Construction
(C) (2)
Rentable
Square
Feet (3)
(unaudited)
 ($ in thousands)
Office Properties:
3101 - 3243 S. La Cienega Blvd., Culver City, CA$150,718 $31,033 $373 $150,718 $31,406 $182,124 $11,019 352019A151,908 
2240 E. Imperial Highway, El Segundo, CA1,044 11,763 29,602 1,048 41,361 42,409 29,440 351983C122,870 
2250 E. Imperial Highway, El Segundo, CA2,579 29,062 36,344 2,547 65,438 67,985 58,352 351983C298,728 
2260 E. Imperial Highway, El Segundo, CA2,518 28,370 36,805 2,547 65,146 67,693 20,796 351983C298,728 
909 N. Pacific Coast Highway, El Segundo, CA3,577 34,042 54,232 3,577 88,274 91,851 47,780 352005C244,880 
999 N. Pacific Coast Highway, El Segundo, CA1,407 34,326 17,998 1,407 52,324 53,731 29,513 352003C138,389 
1350 Ivar Ave., Los Angeles, CA1,575 — 14,192 1,575 14,192 15,767 470 352020C16,448 
1355 Vine St., Los Angeles, CA17,588 — 120,733 17,588 120,733 138,321 4,074 352020C183,129 
1375 Vine St., Los Angeles, CA15,578 — 102,725 15,578 102,725 118,303 3,475 352020C159,236 
1395 Vine St., Los Angeles, CA278 — 3,249 278 3,249 3,527 107 352020C2,575 
1500 N. El Centro Ave., Los Angeles, CA (4)
9,235 21 59,075 9,235 59,096 68,331 14,287 352016C113,447 
1525 N. Gower St., Los Angeles, CA (4)
1,318 9,745 1,318 9,748 11,066 1,877 352016C9,610 
1575 N. Gower St., Los Angeles, CA (4)
22,153 51 119,573 22,153 119,624 141,777 19,165 352016C264,430 
6115 W. Sunset Blvd., Los Angeles, CA (4)
1,313 17,127 2,455 15,988 18,443 3,417 352015C26,238 
6121 W. Sunset Blvd., Los Angeles, CA (4)
11,120 4,256 44,014 8,703 50,687 59,390 10,397 352015C93,418 
6255 W. Sunset Blvd., Los Angeles, CA18,111 60,320 51,016 18,111 111,336 129,447 47,448 352012A323,920 
3750 Kilroy Airport Way, Long Beach, CA— 1,941 13,776 — 15,717 15,717 11,673 351989C10,718 
3760 Kilroy Airport Way, Long Beach, CA— 17,467 20,058 — 37,525 37,525 29,395 351989C166,761 
3780 Kilroy Airport Way, Long Beach, CA— 22,319 35,319 — 57,638 57,638 43,899 351989C221,452 
3800 Kilroy Airport Way, Long Beach, CA— 19,408 23,983 — 43,391 43,391 28,068 352000C192,476 
3840 Kilroy Airport Way, Long Beach, CA— 13,586 14,378 — 27,964 27,964 17,427 351999C136,026 
3880 Kilroy Airport Way, Long Beach, CA— 9,704 12,108 — 21,812 21,812 5,926 351997A96,923 
3900 Kilroy Airport Way, Long Beach, CA— 12,615 15,684 — 28,299 28,299 20,177 351997A130,935 
Kilroy Airport Center, Phase IV, Long Beach, CA (5)
— — 4,997 — 4,997 4,997 4,997 35— — 
8560 W. Sunset Blvd., West Hollywood, CA9,720 50,956 2,995 9,720 53,951 63,671 10,543 352016A76,359 
8570 W. Sunset Blvd., West Hollywood, CA31,693 27,974 6,935 31,693 34,909 66,602 5,523 352016A49,276 
8580 W. Sunset Blvd., West Hollywood, CA10,013 3,695 1,473 10,013 5,168 15,181 679 352016A6,875 
8590 W. Sunset Blvd., West Hollywood, CA39,954 27,884 5,428 39,954 33,312 73,266 5,678 352016A56,750 
12100 W. Olympic Blvd., Los Angeles, CA$163,435(6)352 45,611 21,147 9,633 57,477 67,110 32,649 352003C152,048 
12200 W. Olympic Blvd., Los Angeles, CA(6)4,329 35,488 25,844 3,977 61,684 65,661 44,791 352000C150,832 
12233 W. Olympic Blvd., Los Angeles, CA22,100 53,170 6,030 22,100 59,200 81,300 18,217 352012A151,029 
12312 W. Olympic Blvd., Los Angeles, CA(6)3,325 12,202 12,490 3,399 24,618 28,017 16,457 351997A76,644 
1633 26th St., Santa Monica, CA2,080 6,672 4,029 2,040 10,741 12,781 8,000 351997A43,857 
2100/2110 Colorado Ave., Santa Monica, CA5,474 26,087 14,910 5,476 40,995 46,471 29,054 351997A102,864 
KILROY REALTY CORPORATION AND KILROY REALTY, L.P.
SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION – (Continued)
December 31, 2021
 Initial CostGross Amounts at Which
Carried at Close of Period
Property LocationEncumb-
rances
Land and Improve-
ments
Buildings
and
Improve-
ments
Costs
Capitalized
Subsequent 
to
Acquisition/
Improvement
Land and Improve-
ments
Buildings
and
Improve-
ments
TotalAccumulated
Depreciation
Depreci-
ation
Life (1)
Date of
Acquisition
(A)/
Construction
(C) (2)
Rentable
Square
Feet (3)
(unaudited)
 ($ in thousands)
3130 Wilshire Blvd., Santa Monica, CA8,921 6,579 17,261 9,188 23,573 32,761 18,444 351997A90,074 
501 Santa Monica Blvd., Santa Monica, CA4,547 12,044 17,544 4,551 29,584 34,135 20,812 351998A76,803 
12225 El Camino Real, Del Mar, CA1,700 9,633 3,968 1,673 13,628 15,301 10,023 351998A58,401 
12235 El Camino Real, Del Mar, CA1,507 8,543 9,979 1,540 18,489 20,029 11,991 351998A53,751 
12340 El Camino Real, Del Mar, CA (7)
— — 2,964 — 2,964 2,964 2,666 352002C— 
12390 El Camino Real, Del Mar, CA3,453 11,981 11,915 3,453 23,896 27,349 11,812 352000C69,421 
12770 El Camino Real, Del Mar, CA9,360 — 34,957 9,360 34,957 44,317 5,710 352015C75,035 
12780 El Camino Real, Del Mar, CA18,398 54,954 24,110 18,398 79,064 97,462 21,969 352013A140,591 
12790 El Camino Real, Del Mar, CA10,252 21,236 16,722 10,252 37,958 48,210 8,265 352013A87,944 
12830 El Camino Real, Del Mar, CA 28,645 — 110,541 28,645 110,541 139,186 4,937 352021C196,444 
12860 El Camino Real, Del Mar, CA11,326 — 51,583 11,326 51,583 62,909 2,469 352021C92,042 
12348 High Bluff Dr., Del Mar, CA1,629 3,096 8,002 1,629 11,098 12,727 7,459 351999C39,193 
12400 High Bluff Dr., Del Mar, CA15,167 40,497 17,519 15,167 58,016 73,183 33,889 352004C210,732 
3579 Valley Centre Dr., Del Mar, CA2,167 6,897 11,146 2,858 17,352 20,210 10,907 351999C54,960 
3611 Valley Centre Dr., Del Mar, CA4,184 19,352 29,206 5,259 47,483 52,742 29,118 352000C132,425 
3661 Valley Centre Dr., Del Mar, CA4,038 21,144 20,058 4,725 40,515 45,240 25,962 352001C128,364 
3721 Valley Centre Dr., Del Mar, CA4,297 18,967 15,428 4,254 34,438 38,692 21,028 352003C115,193 
3811 Valley Centre Dr., Del Mar, CA3,452 16,152 21,589 4,457 36,736 41,193 25,136 352000C118,912 
3745 Paseo Place, Del Mar, CA (Retail)24,358 — 72,833 24,358 72,833 97,191 6,598 352019C95,871 
13480 Evening Creek Dr. North, San Diego, CA7,997 — 52,956 7,997 52,956 60,953 23,882 352008C154,157 
13500 Evening Creek Dr. North, San Diego, CA7,581 35,903 24,304 7,580 60,208 67,788 27,824 352004A143,749 
13520 Evening Creek Dr. North, San Diego, CA7,581 35,903 22,443 7,580 58,347 65,927 29,944 352004A143,654 
2305 Historic Decatur Rd., Point Loma, CA5,240 22,220 9,559 5,240 31,779 37,019 13,822 352010A107,456 
4690 Executive Dr., University Towne Centre, CA1,623 7,926 3,678 1,623 11,604 13,227 8,642 351999A47,846 
9455 Towne Centre Dr., University Towne Centre, CA6,081 — 80,294 6,081 80,294 86,375 2,456 352021C160,444 
4100 Bohannon Dr., Menlo Park, CA4,835 15,526 1,198 4,860 16,699 21,559 5,588 352012A47,379 
4200 Bohannon Dr., Menlo Park, CA4,798 15,406 5,552 4,662 21,094 25,756 7,394 352012A45,451 
4300 Bohannon Dr., Menlo Park, CA6,527 20,958 5,992 6,470 27,007 33,477 9,286 352012A63,079 
4400 Bohannon Dr., Menlo Park, CA4,798 15,406 3,919 4,939 19,184 24,123 7,011 352012A48,146 
4500 Bohannon Dr., Menlo Park, CA6,527 20,957 3,805 6,470 24,819 31,289 8,488 352012A63,078 
4600 Bohannon Dr., Menlo Park, CA4,798 15,406 4,105 4,939 19,370 24,309 7,168 352012A48,147 
4700 Bohannon Dr., Menlo Park, CA6,527 20,958 1,614 6,470 22,629 29,099 7,761 352012A63,078 
1290 - 1300 Terra Bella Ave., Mountain View, CA28,730 27,555 1,743 28,730 29,298 58,028 6,520 352016A114,175 
680 E. Middlefield Rd., Mountain View, CA34,755 — 56,759 34,755 56,759 91,514 13,689 352014C171,676 
KILROY REALTY CORPORATION AND KILROY REALTY, L.P.
SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION – (Continued)
December 31, 2021
 Initial CostGross Amounts at Which
Carried at Close of Period
Property LocationEncumb-
rances
Land and Improve-
ments
Buildings
and
Improve-
ments
Costs
Capitalized
Subsequent 
to
Acquisition/
Improvement
Land and Improve-
ments
Buildings
and
Improve-
ments
TotalAccumulated
Depreciation
Depreci-
ation
Life (1)
Date of
Acquisition
(A)/
Construction
(C) (2)
Rentable
Square
Feet (3)
(unaudited)
 ($ in thousands)
690 E. Middlefield Rd., Mountain View, CA34,605 — 56,515 34,605 56,515 91,120 13,630 352014C171,215 
1701 Page Mill Rd., Palo Alto, CA— 99,522 29 — 99,551 99,551 15,008 352016A128,688 
3150 Porter Dr., Palo Alto, CA— 21,715 3,082 — 24,797 24,797 3,815 352016A36,886 
900 Jefferson Ave., Redwood City, CA (8)
16,668 — 109,400 18,063 108,005 126,068 23,526 352015C228,505 
900 Middlefield Rd., Redwood City, CA (8)
7,959 — 50,174 8,626 49,507 58,133 10,462 352015C118,764 
100 Hooper St., San Francisco, CA78,564 — 196,525 85,510 189,579 275,089 17,575 352018C417,914 
100 First St., San Francisco, CA (9)
49,150 131,238 75,122 49,150 206,360 255,510 84,313 352010A480,457 
303 Second St., San Francisco, CA (10)
63,550 154,153 105,065 63,550 259,218 322,768 109,983 352010A784,658 
201 Third St., San Francisco, CA19,260 84,018 75,015 19,260 159,033 178,293 74,496 352011A346,538 
360 Third St., San Francisco, CA— 88,235 125,655 28,504 185,386 213,890 60,597 352011A429,796 
250 Brannan St., San Francisco, CA7,630 22,770 10,239 7,630 33,009 40,639 12,929 352011A100,850 
301 Brannan St., San Francisco, CA5,910 22,450 16,673 5,910 39,123 45,033 12,198 352011A82,834 
333 Brannan St., San Francisco, CA18,645 — 80,811 18,645 80,811 99,456 13,704 352016C185,602 
345 Brannan St., San Francisco, CA29,405 113,179 819 29,403 114,000 143,403 10,254 352018A110,050 
350 Mission St., San Francisco, CA52,815 — 212,731 52,815 212,731 265,546 37,855 352016C455,340 
345 Oyster Point Blvd., South San Francisco, CA13,745 18,575 — 13,745 18,575 32,320 2,279 352018A40,410 
347 Oyster Point Blvd., South San Francisco, CA14,071 18,289 44 14,071 18,333 32,404 2,252 352018A39,780 
349 Oyster Point Blvd., South San Francisco, CA23,112 22,601 324 23,112 22,925 46,037 4,015 352018A65,340 
350 Oyster Point Blvd., South San Francisco, CA23,719 — 177,114 23,719 177,114 200,833 1,256 352021C234,892 
352 Oyster Point Blvd., South San Francisco, CA23,449 — 159,152 23,449 159,152 182,601 688 352021C232,215 
354 Oyster Point Blvd., South San Francisco, CA19,538 — 134,454 19,538 134,454 153,992 623 352021C193,472 
505 Mathilda Ave., Sunnyvale, CA37,843 1,163 50,450 37,943 51,513 89,456 10,707 352014C212,322 
555 Mathilda Ave., Sunnyvale, CA37,843 1,163 50,447 37,943 51,510 89,453 10,707 352014C212,322 
599 Mathilda Ave., Sunnyvale, CA13,538 12,559 78 13,538 12,637 26,175 4,972 352012A76,031 
605 Mathilda Ave., Sunnyvale, CA29,014 891 77,281 29,090 78,096 107,186 23,795 352014C162,785 
601 108th Ave., Bellevue, WA (11)
— 214,095 84,890 42,680 256,305 298,985 98,849 352011A490,738 
10900 NE 4th St., Bellevue, WA25,080 150,877 50,023 25,080 200,900 225,980 71,570 352012A428,557 
2001 W. 8th Ave., Seattle, WA84,076 371,154 32 84,076 371,186 455,262 3,608 352021A539,226 
701 N. 34th St., Seattle, WA— 48,027 8,906 — 56,933 56,933 20,516 352012A141,860 
801 N. 34th St., Seattle, WA— 58,537 21,179 — 79,716 79,716 23,312 352012A173,615 
837 N. 34th St., Seattle, WA— 37,404 6,314 — 43,718 43,718 14,545 352012A112,487 
320 Westlake Ave. North, Seattle, WA85,588 (12)14,710 82,018 14,747 14,710 96,765 111,475 26,804 352013A184,644 
321 Terry Ave. North, Seattle, WA(12)10,430 60,003 10,633 10,430 70,636 81,066 20,627 352013A135,755 
401 Terry Ave. North, Seattle, WA22,500 77,046 13 22,500 77,059 99,559 20,457 352014A174,530 
KILROY REALTY CORPORATION AND KILROY REALTY, L.P.
SCHEDULE III – REAL ESTATE AND ACCUMULATED DEPRECIATION – (Continued)
December 31, 2021
 Initial CostGross Amounts at Which
Carried at Close of Period
Property LocationEncumb-
rances
Land and Improve-
ments
Buildings
and
Improve-
ments
Costs
Capitalized
Subsequent 
to
Acquisition/
Improvement
Land and Improve-
ments
Buildings
and
Improve-
ments
TotalAccumulated
Depreciation
Depreci-
ation
Life (1)
Date of
Acquisition
(A)/
Construction
(C) (2)
Rentable
Square
Feet (3)
(unaudited)
 ($ in thousands)
333 Dexter Ave. North, Seattle, WA— — 364,094 42,854 321,240 364,094 7,454 35— C— 
200 W. 6th St., Austin, TX— — 9,001 — 9,001 9,001 314 35— C— 
Residential Properties:
1550 N. El Centro Ave., Los Angeles, CA (4)
16,970 39 136,552 16,970 136,591 153,561 21,934 352016C— 
6390 De Longpre Ave., Hollywood, CA12,112 — 164,108 12,112 164,108 176,220 3,485 352021C— 
3200 Paseo Village Way, Del Mar, CA106,419 — 270,013 106,419 270,013 376,432 15,102 352020C— 
TOTAL OPERATING PROPERTIES249,023 1,597,281 3,036,949 4,641,337 1,731,982 7,543,585 9,275,567 2,003,656 15,456,528 
Undeveloped land and construction in progress— 883,621 — 1,133,505 883,621 1,133,505 2,017,126 — — 
TOTAL ALL PROPERTIES$249,023 (13)$2,480,902 $3,036,949 $5,774,842 $2,615,603 $8,677,090 $11,292,693 $2,003,656 15,456,528 
____________________
(1)The initial costs of buildings and improvements are depreciated over 35 years using a straight-line method of accounting; improvements capitalized subsequent to acquisition or development are depreciated over the shorter of the lease term or useful life, generally ranging from one to 20 years.
(2)Represents our date of construction or acquisition, or of our predecessor, the Kilroy Group.
(3)Represents the square footage of our stabilized portfolio.
(4)These properties include the allocated costs of a shared parking structure for a complex comprised of five office buildings and one residential tower.
(5)These costs represent infrastructure costs incurred in 1989. During the third quarter of 2009, we exercised our option to terminate the ground lease at Kilroy Airport Center, Phase IV in Long Beach, California. We had previously leased this land, which is adjacent to our office properties at Kilroy Airport Center, Long Beach, for potential future development opportunities.
(6)These properties secure a $163.4 million mortgage note.
(7)This property was taken out of the stabilized portfolio in the fourth quarter of 2021 for redevelopment in phases.
(8)These properties are owned by Redwood City Partners LLC, a consolidated property partnership.
(9)This property is owned by 100 First Street Member LLC, a consolidated property partnership.
(10)This property is owned by 303 Second Street Member LLC, a consolidated property partnership.
(11)The land underlying this property was acquired in 2021 (refer to Note 3 “Acquisitions” for additional information). Prior to the acquisition, the property was subject to a ground lease.
(12)These properties secure a $85.6 million mortgage note.
(13)Represents gross aggregate principal amount before the effect of the deferred financing costs of $0.7 million as of December 31, 2021.
As of December 31, 2021, the aggregate gross cost of property included above for federal income tax purposes approximated $9.1 billion.

The following table reconciles the historical cost of total real estate held for investment from January 1, 2019 to December 31, 2021:

 Year Ended December 31,
 202120202019
 (in thousands)
Total real estate held for investment, beginning of year$10,190,046 $9,628,773 $8,426,632 
Additions during period:
Acquisitions1,131,248 — 460,512 
Improvements, etc.  547,468 645,170 890,654 
Total additions during period1,678,716 645,170 1,351,166 
Deductions during period:
Cost of real estate sold(572,985)(44,070)(120,788)
Other(3,084)(39,827)(28,237)
Total deductions during period(576,069)(83,897)(149,025)
Total real estate held for investment, end of year$11,292,693 $10,190,046 $9,628,773 

The following table reconciles the accumulated depreciation from January 1, 2019 to December 31, 2021:

 Year Ended December 31,
 202120202019
 (in thousands)
Accumulated depreciation, beginning of year$1,798,646 $1,561,361 $1,391,368 
Additions during period:
Depreciation of real estate256,304 244,815 211,893 
Total additions during period256,304 244,815 211,893 
Deductions during period:
Write-offs due to sale(38,156)(6,401)(41,655)
Other (13,138)(1,129)(245)
Total deductions during period(51,294)(7,530)(41,900)
Accumulated depreciation, end of year$2,003,656 $1,798,646 $1,561,361