# Alteration or repair permit ALT1807338 at 91 Buttonwood St, Boston

Boston Inspectional Services Department permit ALT1807338: issued Aug 10, 2026 for alteration or repair work at 91 Buttonwood St. Existing house is a single house family. We would like to convert basement to an ADU unit (approx. 860 SF). The work includes constructing 2 bedrooms, 2 bathrooms, 1 living room and 1 kitchen. This would make it a single house + ADU unit. Also add an additional bathroom for the first floor bedroom.

- Permit number: ALT1807338
- Issued: Aug 10, 2026
- Type of work: Alteration or repair (city: No Record of Occupancy, Long Form/Alteration Permit)
- Status: Issued (city: Open)
- Reported cost: $100,000
- ZIP code: 02125
- All permits at this address: https://nearbypermits.com/boston/address/91-buttonwood-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-03 16:40 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/