Add second floor to an existing single family residence at 18 Tappan Street
Addition at 18 Tappan St, Boston
Boston Inspectional Services Department permit ALT805157: issued Jul 18, 2018 for addition work at 18 Tappan St. Add second floor to an existing single family residence at 18 Tappan Street, Boston MA 02131. Work includes removal of the existing roof, new exterior framing and structural work, new envelope including siding/insulation/windows/trim etc, new roofing, MEP upgrades, interior framing to create a bedroom/office/family room, and the corresponding finishes. The existing shallow sloped gable roof will be demolished to provide a new, steep sloped gable roof with east/west dormers. Building footprint and all dimensional setbacks remain consistent in the proposed alteration.
- Permit number
- ALT805157
- Issued
- Type of work
- Addition
- Status
- Finished
- Reported cost
- $150,000
- ZIP code
- 02131
- City's category
- Addition, Long Form/Alteration Permit
- City's status
- Closed
- 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 18 Tappan St, and what's permitted nearby
Boston Inspectional Services Department updated its data Oct 8, 2026. We checked it Oct 9, 14:20 UTC. See the city's official records.
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