# Building permits at 4100 37th Ave SW, Seattle, WA New buildings permitted at two addresses within 900 ft since May 1, the largest $366,164. One permit on record here. The newest, Apr 1, 2025: Construct west two-family dwelling. Within a quarter mile, the city has issued 12 more permits since May 1. The nearest permit for a new building is 850 ft away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Apr 1, 2025 | New building | Construct west two-family dwelling (Establish use as a single-family dwelling unit with both an attached accessory dwelling unit and a detached accessory dwelling unit per land use code. Construct (1) two-family dwelling & (1) one-family dwelling per plan. Review & process for (2) records under 7050 | $632,133 | [7050653-CN](https://nearbypermits.com/seattle/permit/7050653-CN/) | ## Within ¼ mi since May 1, 2026 12 permits in the circle. From our copy of the city's data (last 24 months). ### This block (250 to 1,000 ft), 8 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 9, 2026 | [4127 36th Ave SW](https://nearbypermits.com/seattle/address/4127-36th-ave-sw/) | 310 ft SE | Alteration or repair | Construct underpinning and foundation work to a one-family dwelling per plans | $160,000 | [7097440-CN](https://nearbypermits.com/seattle/permit/7097440-CN/) | | Jul 24, 2026 | [4153 37th Ave SW](https://nearbypermits.com/seattle/address/4153-37th-ave-sw/) | 530 ft S | Fence, wall or deck | Allow housing for one new detached dwelling unit per land use code. Construct substantial alterations to convert detached garage to one-family dwelling per plan | $75,000 | [7136343-CN](https://nearbypermits.com/seattle/permit/7136343-CN/) | | Jul 14, 2026 | [3839 37th Ave SW](https://nearbypermits.com/seattle/address/3839-37th-ave-sw/) | 850 ft N | New building | Construct SW one-family dwelling per plan. (Establish use as detached dwelling units (single family residence) per land use code. Construct (2) new one-family dwellings per plan. Review and processing for two records under 7098142-CN) | $366,164 | [7129331-CN](https://nearbypermits.com/seattle/permit/7129331-CN/) | | Jul 14, 2026 | [3837 37th Ave SW](https://nearbypermits.com/seattle/address/3837-37th-ave-sw/) | 880 ft N | New building | Construct NW one-family dwelling per plan. (Establish use as detached dwelling units (single family residence) per land use code. Construct (2) new one-family dwellings per plan. Review and processing for two records under 7098142-CN) | $366,164 | [7098142-CN](https://nearbypermits.com/seattle/permit/7098142-CN/) | | Jun 16, 2026 | [4045 37th Ave SW](https://nearbypermits.com/seattle/address/4045-37th-ave-sw/) | 310 ft NW | Alteration or repair | Replace 1 window like for like nail fin installation vinyl window U-factor.30 or better per manufacturer's specifications in one family dwelling subject to field inspection STFI. | $3,017 | [7147968-CN](https://nearbypermits.com/seattle/permit/7147968-CN/) | | Jun 11, 2026 | [4412 39th Ave SW](https://nearbypermits.com/seattle/address/4412-39th-ave-sw/) | 970 ft SW | Alteration or repair | Construct alterations to existing one-family dwelling per plan. | $30,000 | [7138765-CN](https://nearbypermits.com/seattle/permit/7138765-CN/) | | Jun 9, 2026 | [4115 35th Ave SW](https://nearbypermits.com/seattle/address/4115-35th-ave-sw/) | 520 ft E | Roofing | Erie to remove existing roofing and properly dispose. Erie to furnish and installice and water shield where applicable.Erie to furnish and install fiberglass dimensional shingle.Erie to furnish and install all accessories that may include drip edge pipe boots and flashing.Erie to vent roof properly. | $20,957 | [7147151-RR](https://nearbypermits.com/seattle/permit/7147151-RR/) | | May 15, 2026 | [3842 36th Ave SW](https://nearbypermits.com/seattle/address/3842-36th-ave-sw/) | 980 ft N | Alteration or repair | Construct alterations to one-family dwelling subject to field inspection (STFI) | $2,000 | [7143422-CN](https://nearbypermits.com/seattle/permit/7143422-CN/) | ### Farther (1,000 ft to ¼ mi), 4 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 3, 2026 | [4031 Fauntleroy Way SW](https://nearbypermits.com/seattle/address/4031-fauntleroy-way-sw/) | 0.21 mi E | Roofing | Erie to remove existing roofing and properly dispose. Erie to furnish and installice and water shield where applicable.Erie to furnish and install fiberglass dimensional shingle.Erie to furnish and install all accessories that may include drip edge pipe boots and flashing.Erie to vent roof properly. | $26,806 | [7161285-RR](https://nearbypermits.com/seattle/permit/7161285-RR/) | | Jul 31, 2026 | [4457 Fauntleroy Way SW](https://nearbypermits.com/seattle/address/4457-fauntleroy-way-sw/) | 0.21 mi S | Alteration or repair | Install storage racks at main floor of existing commercial building per plan. | $22,850 | [7137810-CN](https://nearbypermits.com/seattle/permit/7137810-CN/) | | Jun 15, 2026 | [4402 40th Ave SW](https://nearbypermits.com/seattle/address/4402-40th-ave-sw/) | 0.22 mi SW | Elevator | Allow new attached accessory dwelling unit to existing single family use per land use code. Construct alterations to lift structure and convert one-family dwelling to two-family dwelling per plan. | $126,504 | [7103679-CN](https://nearbypermits.com/seattle/permit/7103679-CN/) | | May 19, 2026 | [4043 40th Ave SW](https://nearbypermits.com/seattle/address/4043-40th-ave-sw/) | 0.22 mi W | Alteration or repair | Construct alterations to one family dwelling subject to field inspection STFI. | $50,000 | [7143885-CN](https://nearbypermits.com/seattle/permit/7143885-CN/) | --- Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr). Checked 2026-10-05 19:20 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, the one permit at this address and 12 nearby: https://nearbypermits.com/seattle/address/4100-37th-ave-sw/