# Addition permit ALT1722682 at 91 Keystone St, Boston

Boston Inspectional Services Department permit ALT1722682: issued Aug 26, 2025 for addition work at 91 Keystone St. demo existing garage (on separate permit) remove trees in backyard following plans construct the proposed addition including all finishes.

- Permit number: ALT1722682
- Issued: Aug 26, 2025
- Type of work: Addition (city: Addition, Long Form/Alteration Permit)
- Status: Issued (city: Open)
- Reported cost: $325,000
- ZIP code: 02132
- All permits at this address: https://nearbypermits.com/boston/address/91-keystone-st/

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-06 00:51 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 91 Keystone St: https://nearbypermits.com/boston/address/91-keystone-st/