# Building permits at 1600 E Jefferson St, Seattle, WA 35 permits on record here. The newest, Jun 19, 2025: Construct minor telecommunications facility (T-Mobile) at the roof level of office building. Within a quarter mile, the city has issued 5 more permits since May 1. One is for a new building, 0.24 mi away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Jun 19, 2025 | Roofing | Construct minor telecommunications facility (T-Mobile) at the roof level of office building per plan. | $100,000 | [7020388-CN](https://nearbypermits.com/seattle/permit/7020388-CN/) | | Feb 23, 2024 | Alteration or repair | Construct tenant improvements for office at Suite 115 of existing office building per plan. | $100,000 | [7007081-CN](https://nearbypermits.com/seattle/permit/7007081-CN/) | | May 11, 2022 | Alteration or repair | Remodel office space in the an existing commercial building subject to field inspection (STFI) | $40,000 | [6899272-CN](https://nearbypermits.com/seattle/permit/6899272-CN/) | | May 29, 2018 | Roofing | Re-roof commercial building. | $413,000 | [6670550-RR](https://nearbypermits.com/seattle/permit/6670550-RR/) | | Apr 12, 2017 | Alteration or repair | Construct alterations in basement (Residency Lab) at Swedish subject to field inspection (STFI) | $240,000 | [6591214-CN](https://nearbypermits.com/seattle/permit/6591214-CN/) | | Apr 22, 2016 | Alteration or repair | Construct interior alterations for tenant improvement to existing commercial medical building (Jefferson Tower level B) subject to field inspection (STFI). | $50,000 | [6530997-CN](https://nearbypermits.com/seattle/permit/6530997-CN/) | | Mar 16, 2016 | Alteration or repair | Construct interior tenant improvements to space 1127 in Jefferson Medical Tower subject to field inspection (STFI) | $56,000 | [6521704-CN](https://nearbypermits.com/seattle/permit/6521704-CN/) | | Feb 18, 2016 | Alteration or repair | Construct alterations for a MRI and imaging department in Jefferson Tower/ Swedish Medical Center per plans | $680,000 | [6429653-CN](https://nearbypermits.com/seattle/permit/6429653-CN/) | | Oct 29, 2015 | Alteration or repair | Construct interior alterations to northeast portion of 2nd floor of existing medical building per plan. | $15,000 | [6473444-CN](https://nearbypermits.com/seattle/permit/6473444-CN/) | | Sep 2, 2015 | Alteration or repair | Construct tenant improvements to NE corner on the 2nd floor to Swedish Hospital (Medical Tower - Bldg 13) subject to field inspection (STFI) | $515,320 | [6492916-CN](https://nearbypermits.com/seattle/permit/6492916-CN/) | | Jun 19, 2015 | Alteration or repair | Construct tenant improvements to existing Jefferson Tower Swedish Medical Center - Cherry Hill Campus at level 6 | $1,149,368 | [6469920-CN](https://nearbypermits.com/seattle/permit/6469920-CN/) | | May 4, 2015 | Alteration or repair | Construct tenant improvements to existing office building at the SW corner of the 4th floor subject to field inspection (STFI) per floor plan | $54,775 | [6472203-CN](https://nearbypermits.com/seattle/permit/6472203-CN/) | | Apr 14, 2014 | Alteration or repair | Interior alterations to 3rd Floor of "Swedish Medical Group" existing medical office building per plan. | $1,500,000 | [6404440-CN](https://nearbypermits.com/seattle/permit/6404440-CN/) | | Mar 6, 2013 | Alteration or repair | Tenant improvements to existing medical office (suite 510) per plan | $450,000 | [6347275-CN](https://nearbypermits.com/seattle/permit/6347275-CN/) | | May 4, 2012 | Roofing | Construct alterations to convert existing roof to occupied space per plans.pr 2/25/2012 project # 6319584 Revision to alter door swing from interior space to exterior private use terrace. Construct alterations to convert existing roof to occupied space per plans. | $250,000 | [6294313-CN](https://nearbypermits.com/seattle/permit/6294313-CN/) | | Nov 2, 2011 | Alteration or repair | Alterations to existing medical office (Swedish Multiple Schlerosis Clinic) on Level A per plan. | $1,400,000 | [6287180-CN](https://nearbypermits.com/seattle/permit/6287180-CN/) | | Sep 16, 2011 | Alteration or repair | Interior alterations to medical offices at 5th floor of existing commercial building per plans. | $80,000 | [6292448-CN](https://nearbypermits.com/seattle/permit/6292448-CN/) | | Aug 4, 2011 | Alteration or repair | Construct Interior Tenant Improvement for (Pacific Medical) 4th floor per plans. | $122,500 | [6284412-CN](https://nearbypermits.com/seattle/permit/6284412-CN/) | | Jan 13, 2011 | Alteration or repair | Constrtuct alterations to portion of ground floor cafe for Starbucks kiosk in Jefferson Tower subject to field inspection. | $100,000 | [6270053-CN](https://nearbypermits.com/seattle/permit/6270053-CN/) | | Dec 9, 2010 | Alteration or repair | Construct alterations to interior lobby of existing Jefferson Tower on Cherry Hill Campus per floor plan and subject to field inspection STFI. | $115,000 | [6268876-CN](https://nearbypermits.com/seattle/permit/6268876-CN/) | | Dec 8, 2010 | Alteration or repair | Interior tenant improvement to Suite #510 medical offices per floor plan subject to field inspection | $30,000 | [6268660-CN](https://nearbypermits.com/seattle/permit/6268660-CN/) | | Aug 11, 2010 | Alteration or repair | Closed as incomplete - expired permit. Construct interior alterations to suite A4 (Swedish Cherry Hill) at existing medical office building STFI. | $60,000 | [6257603-CN](https://nearbypermits.com/seattle/permit/6257603-CN/) | | Nov 16, 2009 | Alteration or repair | Install partition walls in existing office space suite 601 per STFI. | $7,000 | [6233251-CN](https://nearbypermits.com/seattle/permit/6233251-CN/) | | May 1, 2009 | Alteration or repair | Alterations to level B area of Jefferson Medical Tower including revised slab and sprinkling to new MRI room cosmetic work to office areas and revised mechanical systems in partial basement per plan. | $1,200,000 | [6208527-CN](https://nearbypermits.com/seattle/permit/6208527-CN/) | | Feb 26, 2009 | Alteration or repair | Non-structural interior alterations to existing waiting room and staff lounge on B-level per floor plan and subject to field inspection | $30,000 | [6209399-CN](https://nearbypermits.com/seattle/permit/6209399-CN/) | | Jun 20, 2008 | Alteration or repair | Non-structural interior alteration 2nd level existing medical office suite 201 per plans. Subject to field inspections. Stfi. | $76,962 | [6185222-CN](https://nearbypermits.com/seattle/permit/6185222-CN/) | | Mar 24, 2008 | Alteration or repair | Commercial TI non-structural to 2nd floor space suite 210 to existing medical office per plans. | $115,000 | [6174923-CN](https://nearbypermits.com/seattle/permit/6174923-CN/) | | Jun 29, 2007 | Alteration or repair | Closed as Incomplete - Expired Permit Interior non-structural partition alterations of northwest corner of 4th floor in existing medical office suite per plan. | $115,000 | [6139665-CN](https://nearbypermits.com/seattle/permit/6139665-CN/) | | Dec 1, 2006 | Alteration or repair | Closed as Incomplete - Expired Permit Non-structural demolition of partial office walls for new office layout and new floor/wall finishes in approx. 2400 sf area on 6th floor of Jefferson Medical Tower subject to field inspection. | $30,000 | [6121461-CN](https://nearbypermits.com/seattle/permit/6121461-CN/) | | Nov 3, 2006 | Alteration or repair | Alter 3rd floor Medical Service Office for Training Rooms in NorthWest PPB Building (Swedish Medical Center-Providence) subject to field inspection (STFI). | $116,500 | [6118751-CN](https://nearbypermits.com/seattle/permit/6118751-CN/) | | Sep 15, 2006 | Alteration or repair | Interior T.I partition alterations for install new medical equipment and accessory facilities including mechanical alterations at SE corner of Level B in existing hospital use (Swedish-Providence) per plans. | $1,200,000 | [6095214-CN](https://nearbypermits.com/seattle/permit/6095214-CN/) | | Aug 14, 2006 | Alteration or repair | Interior Comm TI no structural work new finishing doors and walls on 6th floor of the Jefferson Tower per plan | $40,000 | [6105214-CN](https://nearbypermits.com/seattle/permit/6105214-CN/) | | Jul 13, 2006 | Alteration or repair | Create new Ultrasound Department in half of existing Cancer Center while maintaining existing Ultrasound Department.Consolidate Pharmacy into a smaller space; Basement level per plans - MECHANICAL INCLUDED | $500,000 | [6094189-CN](https://nearbypermits.com/seattle/permit/6094189-CN/) | | May 8, 2006 | Alteration or repair | 9 470 sf t.i. to existing 1st floor medical office of the Jefferson Tower per plan | $568,087 | [6089501-CN](https://nearbypermits.com/seattle/permit/6089501-CN/) | | Mar 28, 2006 | Alteration or repair | Tenant improvements to suites 500 and 501 for medical services per plans | $55,000 | [6091776-CN](https://nearbypermits.com/seattle/permit/6091776-CN/) | ## Within ¼ mi since May 1, 2026 5 permits in the circle. From our copy of the city's data (last 24 months). ### This block (250 to 1,000 ft), 2 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 10, 2026 | [536 19th Ave](https://nearbypermits.com/seattle/address/536-19th-ave/) | 1,000 ft E | Addition | Construct deck addition for one family dwelling subject to field inspection STFI. | $7,000 | [7161728-CN](https://nearbypermits.com/seattle/permit/7161728-CN/) | | Jul 27, 2026 | [550 13th Ave](https://nearbypermits.com/seattle/address/550-13th-ave/) | 920 ft W | Other | Erect temporary tent at Seattle University Soccer Field for periodic use for up to 6 months from [first event August 8th] per plans. All tent components are provided and assembled by professional crew. Owner responsible for structural integrity of tent. | $2,500 | [7149033-CN](https://nearbypermits.com/seattle/permit/7149033-CN/) | ### Farther (1,000 ft to ¼ mi), 3 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 24, 2026 | [1521 E Spruce St](https://nearbypermits.com/seattle/address/1521-e-spruce-st/) | 0.23 mi S | Alteration or repair | New Parking Space at 1521 E Spruce St.Needed for disabled tenant - please expedite | $20,000 | [7162510-CN](https://nearbypermits.com/seattle/permit/7162510-CN/) | | Jul 6, 2026 | [822 15th Ave](https://nearbypermits.com/seattle/address/822-15th-ave/) | 0.24 mi N | Alteration or repair | Construct alterations and additions to west townhouse unit in existing townhouse building per plan. | $175,000 | [7130476-CN](https://nearbypermits.com/seattle/permit/7130476-CN/) | | Jun 16, 2026 | [506 20th Ave](https://nearbypermits.com/seattle/address/506-20th-ave/) | 0.24 mi E | New building | Establish use as two attached dwelling units per Land Use Code. Construct new two family dwelling per plan. | $512,878 | [7104413-CN](https://nearbypermits.com/seattle/permit/7104413-CN/) | ## More on this street Other addresses on E Jefferson St with permits, nearest house number first: - [1401 E Jefferson St](https://nearbypermits.com/seattle/address/1401-e-jefferson-st/): newest permit Oct 22, 2025 - [1305 E Jefferson St](https://nearbypermits.com/seattle/address/1305-e-jefferson-st/): newest permit Mar 4, 2026 - [1020 E Jefferson St](https://nearbypermits.com/seattle/address/1020-e-jefferson-st/): newest permit Jul 16, 2026 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-07 13:41 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, all 35 permits at this address and 5 nearby: https://nearbypermits.com/seattle/address/1600-e-jefferson-st/