# Building permits at 310 A 20th Ave, Seattle, WA One permit on record here. The newest, Jul 21, 2025: Construct NW one-family dwelling 1. Within a quarter mile, the city has issued 6 more permits since May 1. One is for a new building, 650 ft away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Jul 21, 2025 | New building | Construct NW one-family dwelling 1 per plan. (Establish use as single-family residence with attached and detached accessory dwelling units per land use code. Construct 2 new one-family dwellings and 2 new two-family dwellings per plan. Review and processing for four records under 7035964-CN) | $248,053 | [7035964-CN](https://nearbypermits.com/seattle/permit/7035964-CN/) | ## Within ¼ mi since May 1, 2026 6 permits in the circle. From our copy of the city's data (last 24 months). ### This block (250 to 1,000 ft), 4 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 10, 2026 | [536 19th Ave](https://nearbypermits.com/seattle/address/536-19th-ave/) | 990 ft N | Addition | Construct deck addition for one family dwelling subject to field inspection STFI. | $7,000 | [7161728-CN](https://nearbypermits.com/seattle/permit/7161728-CN/) | | Sep 7, 2026 | [155 21st Ave](https://nearbypermits.com/seattle/address/155-21st-ave/) | 690 ft S | Roofing | Project consists of recovering the existing roof with a new 115mil Fleeceback TPO membrane while leaving the existing roof membrane in place. Work includes preparation of the existing membrane installation of the new 115mil fleeceback membrane in adhesive directly over existing membrane and integrat | $89,038 | [7161506-RR](https://nearbypermits.com/seattle/permit/7161506-RR/) | | Jul 22, 2026 | [2101 E James St](https://nearbypermits.com/seattle/address/2101-e-james-st/) | 910 ft N | Roofing | Reroof of Both Steep Slope and low slope areas:1. Steep Slope; remove and replace in like kind asphalt shingle roofing. Remove existing asphalt shingle roofing and dispose of properly. Install New Certainteed Landmark Asphalt shingle roofing system underlayment new edge metal and flashing all per ma | $94,245 | [7154389-RR](https://nearbypermits.com/seattle/permit/7154389-RR/) | | Jun 16, 2026 | [506 20th Ave](https://nearbypermits.com/seattle/address/506-20th-ave/) | 650 ft N | 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/) | ### Farther (1,000 ft to ¼ mi), 2 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Jun 3, 2026 | [118 22nd Ave](https://nearbypermits.com/seattle/address/118-22nd-ave/) | 0.21 mi SE | Roofing | Re-roof building with asphalt shingles | $34,000 | [7146179-RR](https://nearbypermits.com/seattle/permit/7146179-RR/) | | Jun 3, 2026 | [112 22nd Ave](https://nearbypermits.com/seattle/address/112-22nd-ave/) | 0.21 mi SE | Roofing | We are re-roofing this building with asphalt shingles | $20,000 | [7146178-RR](https://nearbypermits.com/seattle/permit/7146178-RR/) | ## More on this street Other addresses on A 20th Ave with permits, nearest house number first: - [308 A 20th Ave](https://nearbypermits.com/seattle/address/308-a-20th-ave/): newest permit Jul 7, 2025 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-08 03:55 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, the one permit at this address and 6 nearby: https://nearbypermits.com/seattle/address/310-a-20th-ave/