# Addition permit ALT805157 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: Jul 18, 2018
- Type of work: Addition (city: Addition, Long Form/Alteration Permit)
- Status: Finished (city: Closed)
- Reported cost: $150,000
- ZIP code: 02131
- All permits at this address: https://nearbypermits.com/boston/address/18-tappan-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-09 15:50 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 18 Tappan St: https://nearbypermits.com/boston/address/18-tappan-st/