# Building permits at 5404 20th Ave S, Seattle, WA New buildings permitted at four addresses within a quarter mile since May 1, the largest $238,451. One permit on record here. The newest, Dec 8, 2025: Construct detached accessory dwelling unit (DADU) accessory to single family residence. Within a quarter mile, the city has issued 9 more permits since May 1. The nearest permit for a new building is 450 ft away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Dec 8, 2025 | New building | Construct detached accessory dwelling unit (DADU) accessory to single family residence per standard plan 6794017-SP. Demolish existing detached garage. | $202,684 | [7112143-CN](https://nearbypermits.com/seattle/permit/7112143-CN/) | ## Within ¼ mi since May 1, 2026 9 permits in the circle. From our copy of the city's data (last 24 months). ### This block (250 to 1,000 ft), 5 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 16, 2026 | [5511 22nd Ave S](https://nearbypermits.com/seattle/address/5511-22nd-ave-s/) | 450 ft SE | New building | Allow new detached accessory dwelling unit accessory to existing single family use per land use code. Construct new one family dwelling per standard plan 6794017-SP | $185,917 | [7157712-CN](https://nearbypermits.com/seattle/permit/7157712-CN/) | | Sep 2, 2026 | [5535 22nd Ave S](https://nearbypermits.com/seattle/address/5535-22nd-ave-s/) | 650 ft SE | Alteration or repair | Construct exterior alterations to existing single family residence per STFI | $8,000 | [7137979-CN](https://nearbypermits.com/seattle/permit/7137979-CN/) | | Jul 20, 2026 | [2135 S Brandon St](https://nearbypermits.com/seattle/address/2135-s-brandon-st/) | 550 ft E | Alteration or repair | Construct alterations to existing one-family dwelling subject-to-field inspection (STFI). | $4,000 | [7153730-CN](https://nearbypermits.com/seattle/permit/7153730-CN/) | | Jun 9, 2026 | [1860 S Brandon Pl](https://nearbypermits.com/seattle/address/1860-s-brandon-pl/) | 390 ft NW | Alteration or repair | Construct interior alterations to existing single family residence subject to field inspection (STFI). | $55,000 | [7147284-CN](https://nearbypermits.com/seattle/permit/7147284-CN/) | | Jun 3, 2026 | [5553 23rd Ave S](https://nearbypermits.com/seattle/address/5553-23rd-ave-s/) | 960 ft SE | New building | Allow housing for one new detached dwelling unit per land use code. Construct one-family dwelling per plan. Existing detached accessory garage to be removed. Existing one-family dwelling to remain. | $220,826 | [7128352-CN](https://nearbypermits.com/seattle/permit/7128352-CN/) | ### Farther (1,000 ft to ¼ mi), 4 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 30, 2026 | [5568 22nd Ave S](https://nearbypermits.com/seattle/address/5568-22nd-ave-s/) | 0.19 mi SE | New building | Allow a detached housing unit maintaining an existing detached unit (no work) per the land use code. Construct a one-family dwelling per plans | $227,646 | [7136612-CN](https://nearbypermits.com/seattle/permit/7136612-CN/) | | Aug 13, 2026 | [2118 S Pearl St](https://nearbypermits.com/seattle/address/2118-s-pearl-st/) | 0.20 mi NE | Alteration or repair | Convert garage to habitable space subject to field inspection. | $30,000 | [7136592-CN](https://nearbypermits.com/seattle/permit/7136592-CN/) | | Jul 20, 2026 | [1708 S Orcas St](https://nearbypermits.com/seattle/address/1708-s-orcas-st/) | 0.25 mi SW | New building | Allow housing for one new detached dwelling unit per land use code. Existing detached dwelling to remain. Construct new one-family dwelling per plan. | $238,451 | [7138484-CN](https://nearbypermits.com/seattle/permit/7138484-CN/) | | Jul 7, 2026 | [1931 S Orcas St](https://nearbypermits.com/seattle/address/1931-s-orcas-st/) | 0.20 mi S | Fence, wall or deck | Remove and replace deck/stairs subject to field inspection. | $3,000 | [7151394-CN](https://nearbypermits.com/seattle/permit/7151394-CN/) | ## Zoning requests nearby There are no zoning requests on file within ¼ mi. Seattle's feed was last read Oct 10. ## More on this street Other addresses on 20th Ave S with permits, nearest house number first: - [5402 20th Ave S](https://nearbypermits.com/seattle/address/5402-20th-ave-s/): newest permit Dec 16, 2025 - [5514 20th Ave S](https://nearbypermits.com/seattle/address/5514-20th-ave-s/): newest permit Nov 2, 2024 - [5515 20th Ave S](https://nearbypermits.com/seattle/address/5515-20th-ave-s/): newest permit May 15, 2025 - [5526 20th Ave S](https://nearbypermits.com/seattle/address/5526-20th-ave-s/): newest permit Dec 8, 2025 - [5533 20th Ave S](https://nearbypermits.com/seattle/address/5533-20th-ave-s/): newest permit Nov 3, 2024 - [5104 20th Ave S](https://nearbypermits.com/seattle/address/5104-20th-ave-s/): newest permit Oct 8, 2024 - [5911 20th Ave S](https://nearbypermits.com/seattle/address/5911-20th-ave-s/): newest permit Dec 30, 2025 - [4849 20th Ave S](https://nearbypermits.com/seattle/address/4849-20th-ave-s/): newest permit Jun 3, 2026 - [3062 20th Ave S](https://nearbypermits.com/seattle/address/3062-20th-ave-s/): newest permit Jul 3, 2025 - [3061 20th Ave S](https://nearbypermits.com/seattle/address/3061-20th-ave-s/): newest permit Mar 24, 2025 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-10 23:29 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 10, 21:47 UTC. Map, the one permit at this address and 9 nearby: https://nearbypermits.com/seattle/address/5404-20th-ave-s/