600 UNIVERSITY ST
SEATTLE, WA 98101
84 permits on record, mostly alteration work — general/building.
Work here was permitted by BLANKET: ONE UNION SQUARE.
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2026-09-14
Construct blanket permit tenant improvements to Puget Sound Clean Air Agency on the seventh floor of existing commercial building per plan.
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2026-08-12
Construct blanket permit tenant improvements to Consor Engineers on the third floor of existing commercial building per plan.
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2026-07-08
Construct blanket permit tenant improvements to Arnold & Porter Seattle on the 35th and 36th floors of existing commercial building per plan.
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2026-07-01
Addition/Alteration — Building
Tenant Improvements for office (Buchalter) at 31st floor of existing Office Building per plan.
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2026-06-16
Addition/Alteration — Building
Construct alterations to eliminate and close off portion of convenience stair connecting L35 - 36 maintaining connection L36 - 37 per plans
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2026-05-27
Blanket permit tenant improvements for BUCHALTER on Floor 31 of existing commercial building per plan.
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2026-05-20
Blanket permit tenant improvements for BEVERIDGE AND DIAMOND LAW on Floor 16 of existing commercial building per plan.
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2026-05-05
Construct blanket permit tenant improvements to the Washington State Court of Appeals on the 26th floor of existing commercial building per plan.
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2026-01-22
Construct blanket permit tenant improvements to Reliance Standard Life Insurance on the ninth floor of existing commercial building per plan.
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2025-08-12
Addition/Alteration — Building
Construct tenant improvements for office space at level one of existing commercial building occupy per plan
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2025-07-15
Construct blanket permit tenant improvements to Snell & Willmer on the third floor of existing commercial building per plan.
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2025-06-20
Construct blanket permit tenant improvements to Gordon Tilden Thomas & Cordell LLP on the 29th floor of existing commercial building per plan.
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2025-05-28
Construct blanket permit tenant improvements to Gordon Thomas Honeywell on the 24th floor of existing commercial building per plan.
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2025-04-18
Construct blanket permit tenant improvements to future tenant on the 18th and 19th floors of existing commercial building per plan.
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2024-11-04
Construct blanket permit tenant improvements to Golden Bear Mgmt Corp. at Suite 3012 of existing commercial building per plan.
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2024-10-11
Construct blanket permit tenant improvements to future tenant on the 31st floor of existing commercial building per plan.
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2024-06-24
Construct blanket permit tenant improvements for Moffatt & Nichol on the sixth floor of existing commercial building per plan.
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2024-06-24
Construct blanket permit tenant improvements to Chapter 13 Trustee on the 13th floor of existing commercial building per plan.
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2024-05-01
Construct blanket permit tenant improvements to future tenant on the 20th floor of existing commercial building per plan.
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2024-04-05
Construct blanket permit tenant improvements to future tenant on the tenth floor of existing commercial building per plan.
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2024-02-20
Construct blanket permit tenant improvements to future tenant on the 24th floor of existing commercial building per plan.
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2024-02-15
Construct blanket permit tenant improvements to future tenant on the ninth floor of existing commercial building per plan.
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2024-01-04
OUS #2710 Institute for Justice - non-structural interior tenant improvement with new partitions doors and finishes.
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2023-12-15
Addition/Alteration — Building
Tenant improvements to existing court room at level 1 of existing office building (One Union Square) occupy per plan.
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2023-12-15
Construct blanket permit tenant improvements to future tenant on the fifth floor of existing commercial building per plan.
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2023-09-18
Construct blanket permit tenant improvements to future tenant on the 10th floor of existing commercial building per plan.
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2023-08-29
Construct blanket permit tenant improvements to future tenant on the 27th floor of existing commercial building per plan.
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2023-07-17
Addition/Alteration — Building
Construct alterations to entrance vestibule lobby and elevator lobbies of existing commercial building (One Union Tower) per plan.
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2023-06-07
Construct blanket permit tenant improvements to future tenant on the 25th floor of existing commercial building per plan.
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2023-05-22
Construct blanket permit tenant improvements to future tenant on the 19th floor of existing commercial building per plan.
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2022-11-14
Construct blanket permit tenant improvements to future tenant on the 23rd floor of existing commercial building per plan.
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2022-11-07
Construct blanket permit tenant improvements to future tenant on the 27th floor of existing commercial building per plan.
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2022-11-07
Construct blanket permit tenant improvements to future tenant on the 24th floor of existing commercial building per plan.
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2022-10-25
Construct blanket permit tenant improvements to future tenant on floors 21 of existing commercial building per plan.
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2022-10-12
Construct blanket permit tenant improvements to future tenant on floor 18 of existing commercial building per plan.
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2022-10-07
Construct blanket permit tenant improvements to future tenant on the thirtieth floor of existing commercial building per plan.
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2022-08-22
Addition/Alteration — Building
Construct interior alterations to a commercial building to remove a convenience stair between levels 13 & 14 per plan.
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2022-08-09
Construct blanket permit tenant improvements to future tenant on the fourth floor of existing commercial building per plan.
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2022-08-09
Construct blanket permit tenant improvements to future tenant floor 17 of existing commercial building per plan.
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2022-08-01
Addition/Alteration — Building
Construct alterations to install operable partition in (B) conference room L4 per plan.
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2022-07-11
Construct blanket permit tenant improvements to OUS Fl 20 Paragon on floor 20 of existing commercial building per plan.
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2022-06-30
Construct blanket permit tenant improvements to Teksystems at suite #2828 of existing commercial building per plan.
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2022-06-13
Construct blanket permit tenant improvements for Trammell Crow in Suite 2912 of existing commercial building per plan.
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2022-06-13
Construct blanket permit tenant improvements for Washington Holdings on Floor 25 of existing commercial building per plan.
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2022-05-25
Construct blanket permit tenant improvements to (OUS Suite 1012 NBR) on 10th Floor of existing commercial building per plan.
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2022-03-02
Blanket permit tenant improvements to office space for Lockton on the 19th floor per plans.
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2022-03-01
Blanket permit tenant improvements to office space for BBG on the 25th floor per plans.
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2022-02-16
Addition/Alteration — Building
Construct alterations to level 10 of an existing office building per plan.
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2022-02-16
Blanket permit tenant improvements to office space for Alston Courtnage on the 23rd floor per plans.
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2022-01-28
Blanket permit tenant improvements to office space for DegenKolb on the 10th floor per plans.
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2021-08-31
Blanket permit tenant improvements to office space for Barnum Financial Group on the 23rd floor per plans.
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2021-07-06
Addition/Alteration — Building
Construct alterations to replace escalator for commercial building [ONE UNION SQUARE] per plan.
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2021-06-21
Blanket permit tenant improvements to office space for Court of Appeals on the 1st floor per plans.
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2021-03-24
OUS #1928 Lockton Expansion- Non-structural Tenant Improvement includes new partitions door and finishes.
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2021-02-18
Blanket permit tenant improvements to office space for Sound Dentistry on the 8th floor per plans.
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2021-01-31
Blanket permit tenant improvements to office space for Court of Appeals the 1st floor per plans.
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2021-01-27
Blanket permit tenant improvements to office space for Lockton on the 19th floor per plans.
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2020-08-27
Blanket permit tenant improvements to office space for HSBC Commercial Bank on the 23rd floor per plans.
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2020-01-30
Blanket permit tenant improvements to office space for Beveridge and Diamond on the 16th floor per plans.
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2020-01-27
Blanket permit tenant improvements to office space for Beveridge & Diamond on the 16th floor per plans.
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2020-01-02
Blanket permit tenant improvements to office space for Aetna Wellness on the 9th floor per plans.
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2019-10-15
Blanket permit tenant improvements to office space for OUS McNaul Ebel on the 27th floor per plans.
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2019-09-10
Blanket permit tenant improvements to office space for MurraySmith on the 3rd floor per plans.
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2019-07-12
Blanket permit tenant improvements to office space for Socius Law Group on the 25th floor per plans.
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2019-04-17
Blanket permit tenant improvements to office space on the 19th floor per plans.
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2018-12-07
Blanket permit tenant improvements to office space for Littler Mendelson on the 32nd floor per plans.
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2018-10-29
Blanket Permit for interior non-structural alterations for AMEC Foster Wheeler on the 6th floor per plan.
Declared value Log in with your free accountContractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6654255-BK -
2018-06-12
Blanket permit tenant improvement to suite 2900 GTTC per plans.
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2018-04-13
Blanket Permit for interior non-structural alterations. Tenant improvement on 5th floor for "HDR" per plan.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6654373-BK -
2018-02-27
Addition/Alteration — Building
Construct tenant improvement to existing mixed-use building (Sheraton Hotel) at ground floor level suite 114 per plan.
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2018-02-26
Blanket Permit for interior non-structural alterations. Tenant improvement on 20th floor for "Paragon Real Estate Advisors" per plan.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6642938-BK -
2018-02-26
Blanket Permit for interior non-structural alterations for AmWINS in suite2200 per plan.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6646103-BK -
2017-12-15
Blanket Permit for interior non-structural alterations. Tenant improvement for the 17th floor "Institute For Justice" per plan.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6633173-BK -
2017-12-12
Addition/Alteration — Building
TI non-structural alterations to existing office building per subject to field inspection (STFI)
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2017-11-30
Blanket Permit for interior non-structural alterations. Tenant improvement on 17th floor for "Guardian Life Insurance" per plan.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6631860-BK -
2017-10-16
Blanket Permit for interior non-structural alterations. Tenant improvement on 30th floor for "Schlosser Geographic" per plan.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus ExpiredPermit 6619969-BK -
2017-07-13
Blanket Permit for interior non-structural alterations. Tenant improvements on 13th floor for "Chapter 13 Trustee" per plans
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6606521-BK -
2017-06-11
Blanket Permit for interior non-structural alterations tenant improvement floor 19.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6600875-BK -
2017-05-17
Blanket Permit for interior non-structural alterations. Tenant improvement on 30th floor for "Allen Hansen & Maybrown" per plans.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus ExpiredPermit 6596699-BK -
2017-02-17
Blanket Permit for interior non-structural alterations to the 32nd floor. For WILLIS TOWERS WATSON per plans.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6579983-BK -
2017-01-12
Blanket Permit for interior non-structural alterations on the 12th floor for AHT Insurance per plans.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6573135-BK -
2017-01-06
Blanket Permit for interior non-structural alterations on Floor 33 for Stoel Rives per plans.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6571228-BK -
2016-11-03
Blanket Permit for interior non-structural alterations for tenant PRUDENTIAL INSURANCE OF AMERICA. FLOOR 4
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6563105-BK -
2016-09-22
Blanket Permit for interior non-structural alterations for 17th floor.
Declared value N/A. Declared value is a premium field which requires a paid plan. However, this permit has no value declared.Contractor BLANKET: ONE UNION SQUAREStatus CompletedPermit 6556739-BK