Existing house is a single house family
Alteration or repair 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
- Type of work
- Alteration or repair
- Status
- Issued
- Reported cost
- $100,000
- ZIP code
- 02125
- City's category
- No Record of Occupancy, Long Form/Alteration Permit
- City's status
- Open
- Source
- Boston Inspectional Services Department permit data (this record)
Type of work and status are our own standard labels, so permits compare across cities. The city's wording is in the "City's category" and "City's status" rows. We show costs under $100 as not listed, because filers often enter $0 or $1 when the city doesn't require a cost.
All permits at 91 Buttonwood St, and what's permitted nearby
Boston Inspectional Services Department updated its data Oct 2, 2026. We checked it Oct 3, 13:52 UTC. Official data.
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