# Building permits at 318 E Mercer St, Seattle, WA Three permits on record here. The newest, Mar 24, 2025: Change of use from apartment (multifamily residential) to single family dwelling unit with attached accessory. Within a quarter mile, the city has issued 11 more permits since May 1. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Mar 24, 2025 | Alteration or repair | Change of use from apartment (multifamily residential) to single family dwelling unit with attached accessory dwelling unit per land use code. Alterations to two family dwelling (no construction) per plan. | Not listed | [7059580-CN](https://nearbypermits.com/seattle/permit/7059580-CN/) | | May 26, 2022 | Alteration or repair | Construct alterations to existing single family residence subject-to-field-inspection (STFI). | $100,000 | [6902027-CN](https://nearbypermits.com/seattle/permit/6902027-CN/) | | Feb 8, 2008 | Alteration or repair | Alterations to Unit 1 of existing duplex per floor plan and subject to field inspection to comply with violation #1012495 | $45,000 | [6169748-CN](https://nearbypermits.com/seattle/permit/6169748-CN/) | ## Within ¼ mi since May 1, 2026 11 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 3, 2026 | [314 E Mercer St](https://nearbypermits.com/seattle/address/314-e-mercer-st/) | 35 ft W | Alteration or repair | Construct alterations to add one dwelling unit at basement level of multi-family building per plan. | $54,000 | [7122115-CN](https://nearbypermits.com/seattle/permit/7122115-CN/) | ### This block (250 to 1,000 ft), 3 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Jul 23, 2026 | [1260 Mercer St](https://nearbypermits.com/seattle/address/1260-mercer-st/) | 1,000 ft W | Alteration or repair | Construct tenant improvements to add a partition for 3rd floor office tenant in commercial office building subject to field inspection [STFI]. | $36,000 | [7153321-CN](https://nearbypermits.com/seattle/permit/7153321-CN/) | | May 28, 2026 | [500 Yale Ave N](https://nearbypermits.com/seattle/address/500-yale-ave-n/) | 930 ft SW | Alteration or repair | Construct blanket permit tenant improvements to future tenant on the first three floors of existing commercial building per plan. | $500,000 | [7129957-BK](https://nearbypermits.com/seattle/permit/7129957-BK/) | | May 28, 2026 | [500 Yale Ave N](https://nearbypermits.com/seattle/address/500-yale-ave-n/) | 930 ft SW | Alteration or repair | Construct blanket permit tenant improvements to future tenant on the fourth floor of existing commercial building per plan. | $750,000 | [7129954-BK](https://nearbypermits.com/seattle/permit/7129954-BK/) | ### Farther (1,000 ft to ¼ mi), 7 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 5, 2026 | [719 Harvard Ave E](https://nearbypermits.com/seattle/address/719-harvard-ave-e/) | 0.22 mi NE | Alteration or repair | Construct alterations to existing two-family dwelling per plan. | $14,300 | [7154974-CN](https://nearbypermits.com/seattle/permit/7154974-CN/) | | Sep 1, 2026 | [715 Harvard Ave E](https://nearbypermits.com/seattle/address/715-harvard-ave-e/) | 0.21 mi E | Alteration or repair | Construct alterations to existing two family dwelling per plan. | $14,300 | [7154968-CN](https://nearbypermits.com/seattle/permit/7154968-CN/) | | Aug 26, 2026 | [1213 Valley St](https://nearbypermits.com/seattle/address/1213-valley-st/) | 0.23 mi NW | Alteration or repair | Construct alterations in existing medical office building at level 1 per plan. | $915,000 | [7152116-CN](https://nearbypermits.com/seattle/permit/7152116-CN/) | | Jul 21, 2026 | [711 Harvard Ave E](https://nearbypermits.com/seattle/address/711-harvard-ave-e/) | 0.21 mi E | Alteration or repair | Construct alterations to existing multifamily building per plan. | $60,000 | [7141688-CN](https://nearbypermits.com/seattle/permit/7141688-CN/) | | Jul 13, 2026 | [903 Bellevue Pl E](https://nearbypermits.com/seattle/address/903-bellevue-pl-e/) | 0.19 mi N | Alteration or repair | Installation of 50mil Single-Ply PVC membrane and 3/8" FanFold Insulation over (1) existing layer of granulated torch down. No revisions to existing sheathing structural or R-Value required. | $74,963 | [7152701-RR](https://nearbypermits.com/seattle/permit/7152701-RR/) | | Jul 10, 2026 | [610 Harvard Ave E](https://nearbypermits.com/seattle/address/610-harvard-ave-e/) | 0.24 mi E | Alteration or repair | Construct alterations to existing minor telecommunications facilities [T-MOBILE] at rooftop level of multi-family building [HARVARD COURT APARTMENTS] per plan. | $31,000 | [7094955-CN](https://nearbypermits.com/seattle/permit/7094955-CN/) | | Jul 8, 2026 | [700 E Mercer St](https://nearbypermits.com/seattle/address/700-e-mercer-st/) | 0.20 mi E | Roofing | 8000 square feet recover existing roofing with torch down vapor barrier install R-36 ISO HD Board Fully adhered fleeceback PVC membrane | $337,737 | [7151890-RR](https://nearbypermits.com/seattle/permit/7151890-RR/) | ## More on this street Other addresses on E Mercer St with permits, nearest house number first: - [314 E Mercer St](https://nearbypermits.com/seattle/address/314-e-mercer-st/): newest permit Jun 3, 2026 - [700 E Mercer St](https://nearbypermits.com/seattle/address/700-e-mercer-st/): newest permit Jul 8, 2026 - [1509 E Mercer St](https://nearbypermits.com/seattle/address/1509-e-mercer-st/): newest permit Nov 12, 2025 - [1615 E Mercer St](https://nearbypermits.com/seattle/address/1615-e-mercer-st/): newest permit Jan 15, 2025 - [1806 E Mercer St](https://nearbypermits.com/seattle/address/1806-e-mercer-st/): newest permit Feb 27, 2025 - [2111 E Mercer St](https://nearbypermits.com/seattle/address/2111-e-mercer-st/): newest permit Apr 3, 2025 - [3220 E Mercer St](https://nearbypermits.com/seattle/address/3220-e-mercer-st/): newest permit Jun 26, 2025 - [3307 E Mercer St](https://nearbypermits.com/seattle/address/3307-e-mercer-st/): newest permit Feb 20, 2026 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-08 05:47 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, all 3 permits at this address and 11 nearby: https://nearbypermits.com/seattle/address/318-e-mercer-st/