# Alteration or repair permit SF1818936 at 45 Cotton St, Boston

Boston Inspectional Services Department permit SF1818936: issued Feb 6, 2026 for alteration or repair work at 45 Cotton St. Dense pack cellulose in exterior walls. R19 fgb and air sealing in rim joist. Mass Save.

- Permit number: SF1818936
- Issued: Feb 6, 2026
- Type of work: Alteration or repair (city: Insulation, Short Form Bldg Permit)
- Status: Finished (city: Closed)
- Reported cost: $6,967
- ZIP code: 02131
- All permits at this address: https://nearbypermits.com/boston/address/45-cotton-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-09 14:20 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 45 Cotton St: https://nearbypermits.com/boston/address/45-cotton-st/