# Alteration or repair permit SF1678268 at 21 Thompson St, Boston

Boston Inspectional Services Department permit SF1678268: issued Jan 6, 2025 for alteration or repair work at 21 Thompson St. To insulate attic and exterior walls with blown in cellulose insulation.

- Permit number: SF1678268
- Issued: Jan 6, 2025
- Type of work: Alteration or repair (city: Insulation, Short Form Bldg Permit)
- Status: Issued (city: Open)
- Reported cost: $9,710
- ZIP code: 02136
- All permits at this address: https://nearbypermits.com/boston/address/21-thompson-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-09 03:11 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 21 Thompson St: https://nearbypermits.com/boston/address/21-thompson-st/