# Building permits at 527 31st Ave E, Seattle, WA

527 31st Ave E, Seattle has 1 building permit on record. The most recent, issued Apr 9, 2025, is for addition or alteration: Allow new detached accessory dwelling unit per green building standard requirements to existing single-family use per land use code. Construct new one family dwelling per plan.

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Apr 9, 2025 | Addition or alteration | Allow new detached accessory dwelling unit per green building standard requirements to existing single-family use per land use code. Construct new one family dwelling per plan. | $150,000 | [7009759-CN](https://nearbypermits.com/seattle/permit/7009759-CN/) |

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Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr). Checked 2026-10-01 10:28 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/