# Building permits at 504 20th Ave, Seattle, WA

Two permits here in the last two years. The newest, Mar 12: Construct alterations to basement of existing two family dwelling Subject to Field Inspection (STFI). Within a quarter mile, the city has issued 6 more permits since May 1. One is for a new building, 30 ft away.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Mar 12, 2026 | Alteration or repair | Construct alterations to basement of existing two family dwelling Subject to Field Inspection (STFI). | $50,000 | [7122516-CN](https://nearbypermits.com/seattle/permit/7122516-CN/) |
| Dec 1, 2025 | Alteration or repair | Complete and final for 9808197 | $1,750 | [7090832-CN](https://nearbypermits.com/seattle/permit/7090832-CN/) |

## Within ¼ mi since May 1, 2026

6 permits in the circle. From our copy of the city's data (last 24 months).

### Next door (under 250 ft), 1 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Jun 16, 2026 | [506 20th Ave](https://nearbypermits.com/seattle/address/506-20th-ave/) | 30 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/) |

### 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/) | 440 ft NW | 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 18, 2026 | [2210 E Cherry St](https://nearbypermits.com/seattle/address/2210-e-cherry-st/) | 980 ft NE | 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/) |
| Aug 3, 2026 | [706 20th Ave](https://nearbypermits.com/seattle/address/706-20th-ave/) | 700 ft N | 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 22, 2026 | [2101 E James St](https://nearbypermits.com/seattle/address/2101-e-james-st/) | 400 ft NE | 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/) |

### Farther (1,000 ft to ¼ mi), 1 permits

| Date | Address | Distance | Type | Work | Cost | Permit |
|---|---|---|---|---|---|---|
| Sep 7, 2026 | [155 21st Ave](https://nearbypermits.com/seattle/address/155-21st-ave/) | 0.24 mi 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/) |

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Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr). Checked 2026-10-05 17:10 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Map, both permits at this address and 6 nearby: https://nearbypermits.com/seattle/address/504-20th-ave/