# Building permits at 400 9th Ave N, Seattle, WA 42 permits on record here. The newest, Aug 12: Construct tenant improvement to portion of L - 12 office space in a commercial building per subject to field. Within a quarter mile, the city has issued 22 more permits since May 1. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Aug 12, 2026 | Alteration or repair | Construct tenant improvement to portion of L - 12 office space in a commercial building per subject to field inspection STFI. | $45,000 | [7157706-CN](https://nearbypermits.com/seattle/permit/7157706-CN/) | | Apr 27, 2026 | Alteration or repair | Construct Tenant Improvement Project at 400 9th Ave N. Installing full height demountable partition walls subject to field inspection STFI. Revision to include two more office spaces 7/17/206 | $16,000 | [7139932-CN](https://nearbypermits.com/seattle/permit/7139932-CN/) | | Apr 20, 2026 | Alteration or repair | Construct fire damage repairs at level A of commercial building subject to field inspection (STFI) | $75,000 | [7139014-CN](https://nearbypermits.com/seattle/permit/7139014-CN/) | | Dec 1, 2025 | Alteration or repair | Tenant Improvement to east portion of level 6 (Amazon - Brazil bldg.) subject to field inspection. | $9,000 | [7118897-CN](https://nearbypermits.com/seattle/permit/7118897-CN/) | | May 15, 2025 | Alteration or repair | Install pre-manufactured booths in existing office on floors 3 and 5-12 of existing office building subject to field inspection. | $300,000 | [7085736-CN](https://nearbypermits.com/seattle/permit/7085736-CN/) | | May 6, 2025 | Alteration or repair | Tenant Improvement to install shelving in an existing office building (level 7) subject to field inspection. | $45,000 | [7083517-CN](https://nearbypermits.com/seattle/permit/7083517-CN/) | | Apr 17, 2025 | Alteration or repair | STFI Tenant Improvement at 400 9th Ave N. Installation of demountable full height partitions and ceiling track subject to field inspection STFI. | $15,000 | [7080694-CN](https://nearbypermits.com/seattle/permit/7080694-CN/) | | Mar 3, 2025 | Alteration or repair | Construct tenant improvement of office space subject to field inspection STFI. | $5,000 | [7072780-CN](https://nearbypermits.com/seattle/permit/7072780-CN/) | | Dec 18, 2024 | Alteration or repair | Tenant improvement to existing office at level 6 of existing office building subject to field inspection. | $15,000 | [7061442-CN](https://nearbypermits.com/seattle/permit/7061442-CN/) | | Jun 4, 2024 | Alteration or repair | Tenant improvement to existing office space level 5 subject to field inspection STFI. | $5,000 | [7028180-CN](https://nearbypermits.com/seattle/permit/7028180-CN/) | | Dec 6, 2022 | Alteration or repair | TI to include installation of new demountable partition and ceiling track subject to field inspection STFI. | $150,000 | [6936855-CN](https://nearbypermits.com/seattle/permit/6936855-CN/) | | Oct 13, 2022 | Alteration or repair | Tenant improvement to existing office space subject to field inspection STFI. | $5,991 | [6927638-CN](https://nearbypermits.com/seattle/permit/6927638-CN/) | | Apr 21, 2021 | Alteration or repair | Tenant Improvements to demolish non-structural interior walls and construction of non-structural wall between adjacent rooms per STFI | $80,000 | [6834552-CN](https://nearbypermits.com/seattle/permit/6834552-CN/) | | May 10, 2019 | Alteration or repair | TI on north end of the 9th level subject to field inspection (STFI) | $6,000 | [6726901-CN](https://nearbypermits.com/seattle/permit/6726901-CN/) | | May 10, 2019 | Alteration or repair | Tenant improvement to level 3 existing office space per STFI. Revision 5/20/2019 adding 2 walls to make offices. | $8,200 | [6726895-CN](https://nearbypermits.com/seattle/permit/6726895-CN/) | | Apr 22, 2019 | Alteration or repair | Construct an exterior accessibility ramp for a commercial building per plan. | $40,000 | [6703806-CN](https://nearbypermits.com/seattle/permit/6703806-CN/) | | Nov 28, 2018 | Alteration or repair | Tenant improvement to move partition walls on north side of 12th floor subject to field inspection (STFI). | $3,000 | [6701253-CN](https://nearbypermits.com/seattle/permit/6701253-CN/) | | Nov 19, 2018 | Alteration or repair | Construct tenant improvement interior alteration to the 24th floor of existing office building Subject to Field Inspection (STFI) | $4,000 | [6700019-CN](https://nearbypermits.com/seattle/permit/6700019-CN/) | | Oct 17, 2018 | Alteration or repair | Tenant Improvements to West portion of Level 3 in existing commercial building subject to field inspection (STFI). | $1,000 | [6694207-CN](https://nearbypermits.com/seattle/permit/6694207-CN/) | | Sep 12, 2018 | Alteration or repair | Construct interior alteration for tenant improvement (on middle east side of floor 3) Subject to Field Inspection (STFI) | $1,000 | [6688180-CN](https://nearbypermits.com/seattle/permit/6688180-CN/) | | May 18, 2018 | Alteration or repair | Interior alterations to office space's door (room 4.302) for existing office building subject to field inspection | $15,000 | [6668910-CN](https://nearbypermits.com/seattle/permit/6668910-CN/) | | Apr 23, 2018 | Alteration or repair | Office tenant improvements on 4th floor subject to field inspection (STFI). | $2,000 | [6657798-CN](https://nearbypermits.com/seattle/permit/6657798-CN/) | | Mar 26, 2018 | Alteration or repair | Ti to south portion of level 4. Subject to field inspection (STFI). | $2,000 | [6652724-CN](https://nearbypermits.com/seattle/permit/6652724-CN/) | | Feb 16, 2018 | Alteration or repair | Construct tenant improvements to Amazon Level 12. Subject to field inspection (STFI). | $2,000 | [6646117-CN](https://nearbypermits.com/seattle/permit/6646117-CN/) | | Feb 16, 2018 | Alteration or repair | Construct tenant improvements to Amazon Level 10. Subject to field inspection (STFI) | $8,000 | [6646114-CN](https://nearbypermits.com/seattle/permit/6646114-CN/) | | Aug 22, 2017 | Alteration or repair | Tenant improvements in a portion of a commercial building at 1st floor NE corner per plan. | $45,000 | [6584595-CN](https://nearbypermits.com/seattle/permit/6584595-CN/) | | Aug 15, 2017 | Alteration or repair | Interior non-structural alterations for commercial building (portion of 6th floor) subject to field inspection (STFI). | $2,000 | [6613516-CN](https://nearbypermits.com/seattle/permit/6613516-CN/) | | May 15, 2017 | Alteration or repair | Construct alterations on the 3rd floor of Sea53 (Brazil) at Amazon subject to field inspection (STFI) | $2,000 | [6597119-CN](https://nearbypermits.com/seattle/permit/6597119-CN/) | | May 15, 2017 | Alteration or repair | Construct alterations on the 9th floor of Amazon (Sea53 - Brazil) subject to field inspection (STFI) | $4,000 | [6597110-CN](https://nearbypermits.com/seattle/permit/6597110-CN/) | | Apr 4, 2017 | Alteration or repair | Office tenant improvements to 9th floor of Brazil (Amazon) subject to field inspection. | $2,000 | [6589913-CN](https://nearbypermits.com/seattle/permit/6589913-CN/) | | Mar 24, 2017 | Alteration or repair | Tenant improvement to the central west portion of the 9th floor of an existing 12-story office building for office use subject to field inspection | $4,000 | [6588139-CN](https://nearbypermits.com/seattle/permit/6588139-CN/) | | Jan 12, 2017 | Alteration or repair | Tenant improvements for restrooms on floors 3-12 subject to field inspection (STFI). | $250,000 | [6575930-CN](https://nearbypermits.com/seattle/permit/6575930-CN/) | | Oct 31, 2016 | Alteration or repair | Interior alterations to SW portion of 5th floor subject to field inspection (STFI) | $4,000 | [6564673-CN](https://nearbypermits.com/seattle/permit/6564673-CN/) | | Sep 2, 2016 | Alteration or repair | Construct tenant improvements to MW area of 8th floor of existing office building subject to field inspection permit (STFI). | $4,000 | [6554813-CN](https://nearbypermits.com/seattle/permit/6554813-CN/) | | Aug 18, 2015 | Alteration or repair | Change use from retail to restaurant and construct initial tenant improvements for restaurant at first floor of commercial building and occupy per plan. | $400,000 | [6472278-CN](https://nearbypermits.com/seattle/permit/6472278-CN/) | | Jan 22, 2015 | Alteration or repair | Initial TI to build out ground floor and 2nd floor levels of office building except as noted under separate permit and occupy per plan. | $2,200,000 | [6420279-CN](https://nearbypermits.com/seattle/permit/6420279-CN/) | | Oct 31, 2014 | Alteration or repair | Construct alterations to portion of level 2 of existing office building for Amazon Cafe and occupy as cafe for use of employees per plan | $250,000 | [6420278-CN](https://nearbypermits.com/seattle/permit/6420278-CN/) | | Oct 13, 2014 | Alteration or repair | Build out commercial kitchen accessory to Bistro restaurant on ground floor of mixed-use building per plan. | $220,000 | [6420280-CN](https://nearbypermits.com/seattle/permit/6420280-CN/) | | Oct 2, 2014 | Alteration or repair | Blanket permit for interior non-structural alteration floors 3 through 12 for Amazon.com | Not listed | [6437308-BK](https://nearbypermits.com/seattle/permit/6437308-BK/) | | Feb 24, 2014 | New building | Phased project: Construction of an office and retail building with below grade parking and occupy per plan | $65,935,756 | [6284918-PH](https://nearbypermits.com/seattle/permit/6284918-PH/) | | Jan 9, 2014 | New building | Shoring/Excavation for construction of an office and retail building with below grade parking per plan | $2,844,222 | [6369620-CN](https://nearbypermits.com/seattle/permit/6369620-CN/) | | Dec 9, 2013 | Demolition | Demolition of existing commercial building at 400 9th Ave N per plan | Not listed | [6369619-DM](https://nearbypermits.com/seattle/permit/6369619-DM/) | ## Within ¼ mi since May 1, 2026 22 permits in the circle. From our copy of the city's data (last 24 months). ### This block (250 to 1,000 ft), 6 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 1, 2026 | [520 Westlake Ave N](https://nearbypermits.com/seattle/address/520-westlake-ave-n/) | 590 ft NE | Alteration or repair | Construct tenant improvements to existing commercial building (Block 38) at levels L5 L7-L12 per plan. | $150,000 | [7150160-CN](https://nearbypermits.com/seattle/permit/7150160-CN/) | | Sep 15, 2026 | [400 Westlake Ave N](https://nearbypermits.com/seattle/address/400-westlake-ave-n/) | 350 ft E | Alteration or repair | Construct tenant improvements in commercial building on Levels 9 & 13 per plan. | $915,038 | [7135192-CN](https://nearbypermits.com/seattle/permit/7135192-CN/) | | Sep 3, 2026 | [333 Boren Ave N](https://nearbypermits.com/seattle/address/333-boren-ave-n/) | 940 ft SE | Alteration or repair | Construct tenant improvement to existing office space subject to field inspection STFI. | $450,500 | [7158130-CN](https://nearbypermits.com/seattle/permit/7158130-CN/) | | Aug 5, 2026 | [535 Terry Ave N](https://nearbypermits.com/seattle/address/535-terry-ave-n/) | 680 ft NE | Fence, wall or deck | Construction of security vestibules in parking garage of a mixed use building per plan. | $100,000 | [7135203-CN](https://nearbypermits.com/seattle/permit/7135203-CN/) | | Jun 15, 2026 | [440 Terry Ave N](https://nearbypermits.com/seattle/address/440-terry-ave-n/) | 800 ft E | Alteration or repair | Construct tenant improvement to existing office space subject to field inspection STFI. | $1,270 | [7148050-CN](https://nearbypermits.com/seattle/permit/7148050-CN/) | | May 13, 2026 | [400 Dexter Ave N](https://nearbypermits.com/seattle/address/400-dexter-ave-n/) | 640 ft W | Alteration or repair | Construct alterations to install guards and plants for level 5 tenant [BRISTOL MYERS SQUIBB] existing north and south terraces of commercial office building per plan. | $650,000 | [7117546-CN](https://nearbypermits.com/seattle/permit/7117546-CN/) | ### Farther (1,000 ft to ¼ mi), 16 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 3, 2026 | [300 Boren Ave N](https://nearbypermits.com/seattle/address/300-boren-ave-n/) | 0.21 mi SE | Alteration or repair | Construct tenant improvement project at 300 Boren Ave N for removal of existing demountable partial-height partitions and installation of demountable full-height partitions and associated ceiling track system to deck above STFI. | $30,000 | [7161239-CN](https://nearbypermits.com/seattle/permit/7161239-CN/) | | Aug 28, 2026 | [399 Fairview Ave N](https://nearbypermits.com/seattle/address/399-fairview-ave-n/) | 0.22 mi E | Alteration or repair | Construct Tenant Improvement Project at 399 Fairview Ave N for installation of full-height demountable partition wall and installation of associated ceiling track system subject to field inspection STFI. | $8,000 | [7160245-CN](https://nearbypermits.com/seattle/permit/7160245-CN/) | | Aug 28, 2026 | [399 Fairview Ave N](https://nearbypermits.com/seattle/address/399-fairview-ave-n/) | 0.22 mi E | Alteration or repair | Construct tenant improvement project at 399 Fairview Ave. N to reconfiguring full-height demountable partitions in existing office space subject to field inspection STFI. | $8,000 | [7159772-CN](https://nearbypermits.com/seattle/permit/7159772-CN/) | | Aug 19, 2026 | [399 Fairview Ave N](https://nearbypermits.com/seattle/address/399-fairview-ave-n/) | 0.22 mi E | Alteration or repair | Construct tenant improvement for North portion of level 4 of office space subject to field inspection STFI. | $5,000 | [7158308-CN](https://nearbypermits.com/seattle/permit/7158308-CN/) | | Aug 14, 2026 | [399 Fairview Ave N](https://nearbypermits.com/seattle/address/399-fairview-ave-n/) | 0.22 mi E | Alteration or repair | Construct Tenant Improvement Project at 399 Fairview Ave N. Installation of full-height demountable partition walls and installation of associated ceiling track systems subject to field inspection STFI. | $5,000 | [7158199-CN](https://nearbypermits.com/seattle/permit/7158199-CN/) | | Aug 12, 2026 | [120 Westlake Ave N](https://nearbypermits.com/seattle/address/120-westlake-ave-n/) | 0.24 mi S | Addition | Construct alterations and additions for minor telecommunications antenna facility (TMobile) at the roof top to existing mixed-use building per plan. | $75,000 | [7125335-CN](https://nearbypermits.com/seattle/permit/7125335-CN/) | | Aug 6, 2026 | [380 Boren Ave N](https://nearbypermits.com/seattle/address/380-boren-ave-n/) | 0.19 mi E | Alteration or repair | Construct tenant improvements to expand classroom use in commercial building at NW corner of 1st floor (for Jazzed) occupy per plan. | $240,000 | [7135558-CN](https://nearbypermits.com/seattle/permit/7135558-CN/) | | Aug 3, 2026 | [202 Westlake Ave N](https://nearbypermits.com/seattle/address/202-westlake-ave-n/) | 0.19 mi S | Alteration or repair | Construct interior only tenant improvement on Level 5 to install (2) phone booths. Subject to field inspection-STFI | $15,000 | [7152326-CN](https://nearbypermits.com/seattle/permit/7152326-CN/) | | Aug 3, 2026 | [202 Westlake Ave N](https://nearbypermits.com/seattle/address/202-westlake-ave-n/) | 0.19 mi S | Alteration or repair | Construct blanket permit tenant improvements to Amazon SEA37 on the fifth floor of existing commercial building per plan. | $287,185 | [7147036-BK](https://nearbypermits.com/seattle/permit/7147036-BK/) | | Jul 27, 2026 | [700 Dexter Ave N](https://nearbypermits.com/seattle/address/700-dexter-ave-n/) | 0.24 mi NW | Alteration or repair | Tenant improvements at existing level 4 skybridge of existing commercial building per plan. Mechanical included. | $150,000 | [7124329-CN](https://nearbypermits.com/seattle/permit/7124329-CN/) | | Jul 14, 2026 | [207 Boren Ave N](https://nearbypermits.com/seattle/address/207-boren-ave-n/) | 0.21 mi SE | Alteration or repair | Construct Tenant improvement Project at 207 Boren Ave N; Removing existing partial-height demoutable partition and installing full-height demountable partition walls subject to field inspection STFI. | $5,000 | [7152265-CN](https://nearbypermits.com/seattle/permit/7152265-CN/) | | Jul 7, 2026 | [700 Dexter Ave N](https://nearbypermits.com/seattle/address/700-dexter-ave-n/) | 0.24 mi NW | Alteration or repair | Construct tenant improvements to existing commercial building at levels 12 and 14 per plan. | $30,000 | [7144364-CN](https://nearbypermits.com/seattle/permit/7144364-CN/) | | Jun 17, 2026 | [207 Boren Ave N](https://nearbypermits.com/seattle/address/207-boren-ave-n/) | 0.21 mi SE | Alteration or repair | Construct Tenant improvement Project at 207 Boren Ave N. Removing existing partial-height demoutable partitions and installing full-height demountable partition walls subject to field inspection STFI. | $9,000 | [7148359-CN](https://nearbypermits.com/seattle/permit/7148359-CN/) | | Jun 9, 2026 | [300 Boren Ave N](https://nearbypermits.com/seattle/address/300-boren-ave-n/) | 0.21 mi SE | Alteration or repair | Construct tenant improvement to existing office space subject to field inspection STFI. | $8,000 | [7146692-CN](https://nearbypermits.com/seattle/permit/7146692-CN/) | | May 15, 2026 | [202 Westlake Ave N](https://nearbypermits.com/seattle/address/202-westlake-ave-n/) | 0.19 mi S | Alteration or repair | Construct tenant improvement to East portion of level 2 office space subject to field inspection STFI. | $5,000 | [7143372-CN](https://nearbypermits.com/seattle/permit/7143372-CN/) | | May 7, 2026 | [207 Boren Ave N](https://nearbypermits.com/seattle/address/207-boren-ave-n/) | 0.21 mi SE | Alteration or repair | Construct interior tenant improvements to existing office building (level 9) subject to field inspection (STFI). | $5,500 | [7141925-CN](https://nearbypermits.com/seattle/permit/7141925-CN/) | ## Zoning requests nearby Hearings are public: you can comment or attend. Dates can move; check the city's page before you go. | Status | Hearing | Address | Distance | Request | Case | City's words | Filed | |---|---|---|---|---|---|---|---| | | | 900 Roy St | 0.21 mi N | Land Use Application to allow temporary use not meeting development standards | [3043815-LU](https://services.seattle.gov/portal/customize/LinkToRecord.aspx?altId=3043815-LU) | "Issued" | 2026-01-27 | ## More on this street Other addresses on 9th Ave N with permits, nearest house number first: - [325 9th Ave N](https://nearbypermits.com/seattle/address/325-9th-ave-n/): newest permit Mar 20, 2026 - [500 9th Ave N](https://nearbypermits.com/seattle/address/500-9th-ave-n/): newest permit Apr 2, 2026 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-09 03:16 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Zoning requests come from the Seattle land use permits (https://cos-data.seattle.gov/d/ht3q-kdvx), City of Seattle. We read it Oct 9, 00:18 UTC. Map, all 42 permits at this address and 22 nearby: https://nearbypermits.com/seattle/address/400-9th-ave-n/