2001 6th Ave
Building permits, Seattle, WA
2001 6th Ave, Seattle has 51 building permits on record. The most recent, issued Aug 29, 2025, is for addition or alteration: Construct alterations to existing commercial building at rooftop per plan.
All permits at this address
| Date | Type | Work | Cost |
|---|---|---|---|
| Addition or alteration | Construct alterations to existing commercial building at rooftop per plan. | $400,000 | |
| Addition or alteration | Construct alterations to install steel skid for UPS battery cabinets to sit on within existing commercial building (Westin Bldg.) per plan. | $15,000 | |
| Addition or alteration | Soft demo for tenant space subject to field inspection STFI. | $105,000 | |
| Addition or alteration | Alterations to portion of 30th floor offices to remove furnishings and equipment per plans. Project includes mechanical work. | $400,000 | |
| Addition or alteration | Tennant improvements to existing tenant space per STFI | $107,000 | |
| Addition or alteration | Construct tenant improvements to existing commercial building on 19th floor (Digital Ready) occupy per plan. | $598,000 | |
| Addition or alteration | Interior alterations to existing commercial space subject to field inspection STFI. | $105,000 | |
| Addition or alteration | Change use from office to data storage center and construct alterations for same on 16th and portion of 17th floor of a commercial high-rise occupy per plan. (Mechanical included… | $200,000 | |
| Addition or alteration | Voluntary seismic retrofit for commercial building per plan. | $600,000 | |
| Tenant Improvment | Blanket permit tenant improvements to office space for Westin Building Exchange on the 19th floor per plans. | $432,000 | |
| Addition or alteration | Construct interior alterations to existing office and utility spaces at 9th and 10th floors per plan. | $775,000 | |
| Addition or alteration | Tenant improvements to suite 2323 located on the 23rd floor of the existing commercial building subject to field inspection (STFI). | $120,000 | |
| Addition or alteration | Alterations to existing commercial building on the exterior per plan. | $400,000 | |
| Addition or alteration | Closed as incomplete - expired permit. Construct tenant improvement to the 19th floor per plans. | $150,000 | |
| Addition or alteration | Interior alterations to suite 1800F subject to field inspection (STFI). | $700,000 | |
| Addition or alteration | Non-structural interior alterations to portions of levels 2 and 3 at parking offices space and sky bridge of existing commercial building per plan. | $275,000 | |
| Addition or alteration | Construct alterations to existing elevator lobby access per plans. | $150,000 | |
| Addition or alteration | Construct non structural alterations to the 17th floor of existing commercial building per floor plan subject to field inspection (STFI) | $175,000 | |
| Addition or alteration | Install steel skids in suite 1000 east on 10th floor of the Westin Office Bldg to support installation of data center battery packs per plans. | $21,000 | |
| Addition or alteration | Install steel skids in suite 400 on 4th floor of the Westin Office Bldg to support installation of data center battery packs per plans. | $17,800 | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations. All work for the 27th floor for Westin. | – | |
| Addition or alteration | Alterations to lobby entries for existing office building per plans. | $50,000 | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations 1st 2nd & 3rd floor. For (Westin building) per plans. | – | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations. Demolish one additional wall add one wall a door and two lights on 12th floor for Equinix per plan. | – | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations for 3rd floor. | – | |
| Addition or alteration | Westin bldg. Removal of existing skybridge and construct new skybridge @ 2020 5th ave/bldg per plan. bldg Westin garage bldg. 6th and Lenora bldg. (Review and processing for 4… | $7,500 | |
| Addition or alteration | Closed as incomplete - expired permit. Alterations to construct opening between two office buildings (2001 and 2033 6th Ave) per plans (reviews and processing for 2 A/P's under… | $7,500 | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations to 3rd floor. | – | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations to 3-tier Floor 21 | – | |
| Tenant Improvment | Administrative blanket permit for TI for 19th floor. | – | |
| Addition or alteration | Construction of frame work above exising skybridge to westin bldg and structual alterations to floors in Westin Bldg per plan | $35,000 | |
| Tenant Improvment | Blanket permit for floor 27 Nine Points Capital Managment. | – | |
| Tenant Improvment | Administrative blanket permit reestablished from PTS #2301501. Demolition of existing space and remodel (new walls flooring etc.) Work on 4th Floor. | – | |
| Addition or alteration | Install rooftop microwave dish on Westin Hotel to existing frame per and reuse existing cable conduit per plan. | $40,000 | |
| Addition or alteration | Closed as incomplete - expired permit. Construct/reconfigure entry doors on NE and SE corners on ground floor of existing commercial building per plan. | $90,000 | |
| Tenant Improvment | Blanket permit for Telus Communications on Floor 29 expanding into adjacent tenant space. | – | |
| Addition or alteration | Tenant improvement for 5th floor of westin building including mechanical work per plan. | $1,200,000 | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations for the 11th floor. Switch & data | – | |
| Tenant Improvment | Blanket permit for 22nd floor Gartner Inc. | – | |
| Tenant Improvment | Blanket Permit for interior non-structural alterations for 2001 6th LLC on the 3rd floor | – | |
| Addition or alteration | Construction of a Seattle City Light Transformer Vault to add additional power resources throughout the buildings per plans | $1,364,000 | |
| Addition or alteration | Remove existing elevator #7 and revise shaft for communications and electrical distribution from basement through floor 15 per plans. | $150,000 | |
| Addition or alteration | Switch gear room Tenant improvement to 1st floor and lobby area per plan. Westin Building. | $30,000 | |
| Addition or alteration | Non-structural alterations to 21st floor (suite 2100) of Westin building. Per IAP/plans | $30,000 | |
| Addition or alteration | Interior tenant improvement to existing commercial office per plan subject to field inspection | $15,000 | |
| Addition or alteration | Create a seperate tenant space to exisitng office space westside of the 24th floor per plan | $40,000 | |
| Addition or alteration | Construct non-structural interior alterations to existing office space on 23rd floor (suite 2302) of Westin Building per plans | $7,500 | |
| Addition or alteration | Closed as Incomplete - Expired Permit Alter existing office space (5th Floor-NorthEast portion) subject to field inspection. | $45,000 | |
| Addition or alteration | Non-structural tenant improvements to suite 2100 subject to field inspection | $25,000 | |
| Addition or alteration | Commercial tenant improvement to change the use from retail to a restaurant in suite #102 for "Sound Soups " and occupy per plan. | $35,000 | |
| Addition or alteration | Voluntary seismic retrofit per plans | $200,000 |
Checked 2026-10-01 11:43 UTC against Seattle Department of Construction and Inspections permit data. Markdown · JSON