# Building permits at 8347 20th Ave NW, Seattle, WA New buildings permitted at four addresses within a quarter mile since May 1, the largest $439,114. One permit on record here. The newest, Sep 10, 2025: Allow new detached accessory dwelling unit to existing single family use per land use code. Within a quarter mile, the city has issued 15 more permits since May 1. The nearest permit for a new building is 0.24 mi away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Sep 10, 2025 | New building | Allow new detached accessory dwelling unit to existing single family use per land use code. Construct as new one-family dwelling with existing garage to be removed per plan. | $117,854 | [7056202-CN](https://nearbypermits.com/seattle/permit/7056202-CN/) | ## Within ¼ mi since May 1, 2026 15 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 | |---|---|---|---|---|---|---| | Aug 2, 2026 | [8337 22nd Ave NW](https://nearbypermits.com/seattle/address/8337-22nd-ave-nw/) | 510 ft W | Alteration or repair | Add egress window and alterations to exterior stairs to one-dwelling unit subject to field inspection. | $39,120 | [7155237-CN](https://nearbypermits.com/seattle/permit/7155237-CN/) | | Jul 6, 2026 | [1902 NW 83rd St](https://nearbypermits.com/seattle/address/1902-nw-83rd-st/) | 550 ft SE | Alteration or repair | Interior alteration to dwelling unit Subject To Field Inspection (STFI) | $150,000 | [7151081-CN](https://nearbypermits.com/seattle/permit/7151081-CN/) | | Jun 22, 2026 | [8050 20th Ave NW](https://nearbypermits.com/seattle/address/8050-20th-ave-nw/) | 670 ft S | Alteration or repair | Construct seismic retrofit to existing single family residence per Earthquake Home Retrofit plan set. | $5,000 | [7145466-CN](https://nearbypermits.com/seattle/permit/7145466-CN/) | | Jun 17, 2026 | [8050 20th Ave NW](https://nearbypermits.com/seattle/address/8050-20th-ave-nw/) | 670 ft S | Alteration or repair | Construct alterations to add bedrooms and bathroom at basement level and remodel bathroom at main level of one-family dwelling subject to field inspection [STFI]. | $150,000 | [7148691-CN](https://nearbypermits.com/seattle/permit/7148691-CN/) | | Jun 12, 2026 | [8339 18th Ave NW](https://nearbypermits.com/seattle/address/8339-18th-ave-nw/) | 580 ft E | Roofing | Residential reroof only; no structural changes. Remove existing shingles. Replace planned 5 sheets of 1/2" CDX. Install Owens Corning Duration shingles. | $10,234 | [7147874-RR](https://nearbypermits.com/seattle/permit/7147874-RR/) | | Jun 4, 2026 | [8322 22nd Ave NW](https://nearbypermits.com/seattle/address/8322-22nd-ave-nw/) | 440 ft SW | Alteration or repair | Construct alterations to remodel kitchen at main floor level of one-family dwelling subject to field inspection [STFI]. | $7,097 | [7146361-CN](https://nearbypermits.com/seattle/permit/7146361-CN/) | ### Farther (1,000 ft to ¼ mi), 9 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 10, 2026 | [8004 22nd Ave NW](https://nearbypermits.com/seattle/address/8004-22nd-ave-nw/) | 0.22 mi S | Alteration or repair | Construct exterior entry stairs and landing to replace existing for one-family dwelling subject to field inspection [STFI]. | $10,000 | [7161930-CN](https://nearbypermits.com/seattle/permit/7161930-CN/) | | Aug 4, 2026 | [8023 18th Ave NW](https://nearbypermits.com/seattle/address/8023-18th-ave-nw/) | 0.21 mi SE | Alteration or repair | Construct alterations to one-family dwelling at attached garage to create habitable space subject to field inspection (STFI). | $18,000 | [7154635-CN](https://nearbypermits.com/seattle/permit/7154635-CN/) | | Jul 24, 2026 | [7758 21st Ave NW](https://nearbypermits.com/seattle/address/7758-21st-ave-nw/) | 0.24 mi S | New building | Construct east duplex per plan (Establish use as Single family dwelling and two unit townhouse per land use code. Construct as a two-family and a one-family dwelling; review and process for two records under 7081133-CN) | $439,114 | [7112352-CN](https://nearbypermits.com/seattle/permit/7112352-CN/) | | Jul 24, 2026 | [2015 NW 80th St](https://nearbypermits.com/seattle/address/2015-nw-80th-st/) | 0.24 mi S | New building | Construct east single family dwelling unit adjacent alley permitted under 7077917-CN | $242,550 | [7112137-CN](https://nearbypermits.com/seattle/permit/7112137-CN/) | | Jul 24, 2026 | [7754 21st Ave NW](https://nearbypermits.com/seattle/address/7754-21st-ave-nw/) | 0.25 mi S | New building | Construct west one-family dwelling per plan (Establish use as Single family dwelling and two unit townhouse per land use code. Construct as a two-family and a one-family dwelling; review and process for two records under 7081133-CN) | $375,243 | [7081133-CN](https://nearbypermits.com/seattle/permit/7081133-CN/) | | Jul 24, 2026 | [7760 21st Ave NW](https://nearbypermits.com/seattle/address/7760-21st-ave-nw/) | 0.24 mi S | New building | Construct west one-family dwelling (Establish use as single-family residence per land use code. Construct (3) one-family dwellings per plan. Review & processing for 3 records under 7077917-CN) | $356,932 | [7077917-CN](https://nearbypermits.com/seattle/permit/7077917-CN/) | | Jul 8, 2026 | [8001 22nd Ave NW](https://nearbypermits.com/seattle/address/8001-22nd-ave-nw/) | 0.24 mi SW | New building | Demolition of the existing detached carport and construction of a new detached carport in existing footprint subject to field inspection. | $50,000 | [7147359-CN](https://nearbypermits.com/seattle/permit/7147359-CN/) | | May 19, 2026 | [8547 17th Ave NW](https://nearbypermits.com/seattle/address/8547-17th-ave-nw/) | 0.20 mi NE | Alteration or repair | Construct substantial alterations to existing one family dwelling per plan. | $127,368 | [7132549-CN](https://nearbypermits.com/seattle/permit/7132549-CN/) | | May 6, 2026 | [8314 16th Ave NW](https://nearbypermits.com/seattle/address/8314-16th-ave-nw/) | 0.24 mi E | Alteration or repair | Construct alterations to one-family dwelling [retained earth not to exceed 4'-0"] subject to field inspection (STFI) | $2,000 | [7140979-CN](https://nearbypermits.com/seattle/permit/7140979-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 | |---|---|---|---|---|---|---|---| | | | 7760 21st Ave NW | 0.24 mi S | Land Use Application to subdivide one development site into three unit lots | [3043831-LU](https://services.seattle.gov/portal/customize/LinkToRecord.aspx?altId=3043831-LU) | "Published" | 2026-02-05 | | | | 7754 21st Ave NW | 0.24 mi S | Land Use Application to subdivide one development site into three unit lots | [3043861-LU](https://services.seattle.gov/portal/customize/LinkToRecord.aspx?altId=3043861-LU) | "Published" | 2026-02-12 | | | | 8338 20th Ave NW | 200 ft SE | Land Use Application to subdivide one development site into three unit lots | [3043658-LU](https://services.seattle.gov/portal/customize/LinkToRecord.aspx?altId=3043658-LU) | "Completed" | 2025-12-05 | ## More on this street Other addresses on 20th Ave NW with permits, nearest house number first: - [8349 20th Ave NW](https://nearbypermits.com/seattle/address/8349-20th-ave-nw/): newest permit Apr 29, 2026 - [8340 20th Ave NW](https://nearbypermits.com/seattle/address/8340-20th-ave-nw/): newest permit Feb 1, 2026 - [8338 20th Ave NW](https://nearbypermits.com/seattle/address/8338-20th-ave-nw/): newest permit Feb 1, 2026 - [8336 20th Ave NW](https://nearbypermits.com/seattle/address/8336-20th-ave-nw/): newest permit Feb 1, 2026 - [8053 20th Ave NW](https://nearbypermits.com/seattle/address/8053-20th-ave-nw/): newest permit Mar 8, 2025 - [8050 20th Ave NW](https://nearbypermits.com/seattle/address/8050-20th-ave-nw/): newest permit Jun 22, 2026 - [8021 20th Ave NW](https://nearbypermits.com/seattle/address/8021-20th-ave-nw/): newest permit Apr 13, 2025 - [9257 20th Ave NW](https://nearbypermits.com/seattle/address/9257-20th-ave-nw/): newest permit Apr 15, 2025 - [7352 20th Ave NW](https://nearbypermits.com/seattle/address/7352-20th-ave-nw/): newest permit Feb 26, 2026 - [7342 20th Ave NW](https://nearbypermits.com/seattle/address/7342-20th-ave-nw/): newest permit Dec 3, 2024 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-13 11:07 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 13, 08:17 UTC. Map, the one permit at this address and 15 nearby: https://nearbypermits.com/seattle/address/8347-20th-ave-nw/