# Building permits at 823 20th Ave, Seattle, WA One permit on record here. The newest, Oct 1, 2025: Construct substantial alterations and additions for single-family residence. Within a quarter mile, the city has issued 7 more permits since May 1. One is for a new building, 0.24 mi away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Oct 1, 2025 | Addition | Construct substantial alterations and additions for single-family residence per plan. | $251,193 | [7089561-CN](https://nearbypermits.com/seattle/permit/7089561-CN/) | ## Within ¼ mi since May 1, 2026 7 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/) | 960 ft S | Addition | Construct deck addition for one family dwelling subject to field inspection STFI. | $7,000 | [7161728-CN](https://nearbypermits.com/seattle/permit/7161728-CN/) | | Aug 3, 2026 | [706 20th Ave](https://nearbypermits.com/seattle/address/706-20th-ave/) | 590 ft S | Alteration or repair | Construct alterations for fire damage repair to remove damaged dropped ceilings finishes and windows in kind subject to field inspection (STFI). | $75,000 | [7154710-CN](https://nearbypermits.com/seattle/permit/7154710-CN/) | | Jul 10, 2026 | [1116 A 18th Ave](https://nearbypermits.com/seattle/address/1116-a-18th-ave/) | 900 ft NW | Fence, wall or deck | Remove and replace 1 rooftop patio window in an existing multi-family residence. Like for like in size. No change to structural or clear open subject to field inspection STFI. | $4,013 | [7152424-CN](https://nearbypermits.com/seattle/permit/7152424-CN/) | | Jun 23, 2026 | [800 18th Ave](https://nearbypermits.com/seattle/address/800-18th-ave/) | 450 ft W | Alteration or repair | Construct alterations for building stabilization (Immaculate Conception Church) at east end of ground floor in existing institutional building per plan. | $175,000 | [7138441-CN](https://nearbypermits.com/seattle/permit/7138441-CN/) | ### Farther (1,000 ft to ¼ mi), 3 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Aug 18, 2026 | [2210 E Cherry St](https://nearbypermits.com/seattle/address/2210-e-cherry-st/) | 0.20 mi SE | Alteration or repair | Construct initial tenant improvement in street level space for a canine grooming facility occupy per plans | $90,000 | [7147882-CN](https://nearbypermits.com/seattle/permit/7147882-CN/) | | Jul 22, 2026 | [2101 E James St](https://nearbypermits.com/seattle/address/2101-e-james-st/) | 0.22 mi SE | 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/) | 0.24 mi S | 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 20th Ave with permits, nearest house number first: - [925 20th Ave](https://nearbypermits.com/seattle/address/925-20th-ave/): newest permit Oct 13, 2025 - [706 20th Ave](https://nearbypermits.com/seattle/address/706-20th-ave/): newest permit Aug 3, 2026 - [941 20th Ave](https://nearbypermits.com/seattle/address/941-20th-ave/): newest permit Sep 2, 2025 - [506 20th Ave](https://nearbypermits.com/seattle/address/506-20th-ave/): newest permit Jun 16, 2026 - [504 20th Ave](https://nearbypermits.com/seattle/address/504-20th-ave/): newest permit Mar 12, 2026 - [401 20th Ave](https://nearbypermits.com/seattle/address/401-20th-ave/): newest permit Mar 31, 2026 - [308 20th Ave](https://nearbypermits.com/seattle/address/308-20th-ave/): newest permit Jun 18, 2025 - [1452 20th Ave](https://nearbypermits.com/seattle/address/1452-20th-ave/): newest permit Dec 17, 2025 - [1455 20th Ave](https://nearbypermits.com/seattle/address/1455-20th-ave/): newest permit Jul 16, 2025 - [1463 20th Ave](https://nearbypermits.com/seattle/address/1463-20th-ave/): newest permit Jun 12, 2025 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-07 20:34 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, the one permit at this address and 7 nearby: https://nearbypermits.com/seattle/address/823-20th-ave/