# Building permits at 8421 48th Ave S, Seattle, WA New buildings permitted at four addresses within a quarter mile since May 1, the largest $391,499. One permit on record here. The newest, Feb 26: Establish use as single family residence with attached accessory dwelling unit per land use code. Within a quarter mile, the city has issued 7 more permits since May 1. The nearest permit for a new building is 270 ft away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Feb 26, 2026 | New building | Establish use as single family residence with attached accessory dwelling unit per land use code. Construction new two family dwelling per plan. Existing dwelling to remain. | $422,932 | [7055327-CN](https://nearbypermits.com/seattle/permit/7055327-CN/) | ## Within ¼ mi since May 1, 2026 7 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 | |---|---|---|---|---|---|---| | Aug 26, 2026 | [8440 47th Ave S](https://nearbypermits.com/seattle/address/8440-47th-ave-s/) | 230 ft S | Addition | Construct additions and alterations to existing one-family dwelling (Northwest) per plan. (Establish use as housing for one detached dwelling unit per land use code. Existing detached dwelling to remain. Construct 1 new one-family dwelling and additions & alterations to existing one family dwelling | $44,592 | [7149714-CN](https://nearbypermits.com/seattle/permit/7149714-CN/) | ### This block (250 to 1,000 ft), 5 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 2, 2026 | [8438 47th Ave S](https://nearbypermits.com/seattle/address/8438-47th-ave-s/) | 250 ft S | Addition | Construct new one-family dwelling (Southeast) per plan. (Establish use as housing for one detached dwelling unit per land use code. Existing detached dwelling to remain. Construct 1 new one-family dwelling and additions & alterations to existing one family dwelling per plan. Review and processing fo | $213,302 | [7131979-CN](https://nearbypermits.com/seattle/permit/7131979-CN/) | | Aug 5, 2026 | [8420 46th Ave S](https://nearbypermits.com/seattle/address/8420-46th-ave-s/) | 340 ft W | Alteration or repair | Construct alterations to east side of existing one family residence subject to field inspection (STFI). | $750 | [7150347-CN](https://nearbypermits.com/seattle/permit/7150347-CN/) | | Aug 5, 2026 | [8424 46th Ave S](https://nearbypermits.com/seattle/address/8424-46th-ave-s/) | 270 ft W | New building | Construct east DADU#2 per plan. Establish use as housing for one detached dwelling unit. Construct (2) new one-family dwellings per plan. Existing SFR to remain. Reviews and processing for two records under 7112377-CN) | $237,042 | [7122903-CN](https://nearbypermits.com/seattle/permit/7122903-CN/) | | Aug 5, 2026 | [8422 46th Ave S](https://nearbypermits.com/seattle/address/8422-46th-ave-s/) | 300 ft W | New building | Allow housing for two detached dwelling units. Construct (2) new one-family dwellings per plan. Existing SFR to remain. Reviews and processing for two records under 7112377-CN) | $237,042 | [7112377-CN](https://nearbypermits.com/seattle/permit/7112377-CN/) | | Jul 20, 2026 | [8449 46th Ave S](https://nearbypermits.com/seattle/address/8449-46th-ave-s/) | 580 ft SW | New building | Allow one new detached accessory dwelling unit per land use code. Construct a new one-family dwelling per plan. Existing single-family residence to remain. | $204,547 | [7058576-CN](https://nearbypermits.com/seattle/permit/7058576-CN/) | ### Farther (1,000 ft to ¼ mi), 1 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Jun 23, 2026 | [8307 Wolcott Ave S](https://nearbypermits.com/seattle/address/8307-wolcott-ave-s/) | 0.24 mi NE | New building | Construct new west one-family dwelling per plan. Establish use as housing for one detached dwelling unit per land use code. Existing detached dwelling unit to remain. | $391,499 | [7104011-CN](https://nearbypermits.com/seattle/permit/7104011-CN/) | ## Zoning requests nearby There are no zoning requests on file within ¼ mi. Seattle's feed was last read Oct 17. ## More on this street Other addresses on 48th Ave S with permits, nearest house number first: - [7818 48th Ave S](https://nearbypermits.com/seattle/address/7818-48th-ave-s/): newest permit Dec 10, 2025 - [7816 48th Ave S](https://nearbypermits.com/seattle/address/7816-48th-ave-s/): newest permit Aug 13, 2025 - [7615 48th Ave S](https://nearbypermits.com/seattle/address/7615-48th-ave-s/): newest permit Jul 30, 2025 - [9351 48th Ave S](https://nearbypermits.com/seattle/address/9351-48th-ave-s/): newest permit Dec 10, 2025 - [5606 48th Ave S](https://nearbypermits.com/seattle/address/5606-48th-ave-s/): newest permit Apr 29, 2026 - [5319 48th Ave S](https://nearbypermits.com/seattle/address/5319-48th-ave-s/): newest permit Apr 24, 2025 - [4926 48th Ave S](https://nearbypermits.com/seattle/address/4926-48th-ave-s/): newest permit Mar 26, 2025 - [4813 48th Ave S](https://nearbypermits.com/seattle/address/4813-48th-ave-s/): newest permit Jan 17, 2025 - [4514 48th Ave S](https://nearbypermits.com/seattle/address/4514-48th-ave-s/): newest permit Nov 5, 2024 - [4426 48th Ave S](https://nearbypermits.com/seattle/address/4426-48th-ave-s/): newest permit Apr 7, 2025 --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-17 18:19 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 17, 16:18 UTC. Map, the one permit at this address and 7 nearby: https://nearbypermits.com/seattle/address/8421-48th-ave-s/