# Addition permit ALT1796865 at 231 Foster St, Boston

Boston Inspectional Services Department permit ALT1796865: issued Feb 2, 2026 for addition work at 231 Foster St. Build addition to the rear of the building. New deck at the right side of the building. Basement to remain unfinished. Proposed retaining wall from the front right until the back of the property. 2 new parking spaces.[ePlans].

- Permit number: ALT1796865
- Issued: Feb 2, 2026
- Type of work: Addition (city: Addition, Long Form/Alteration Permit)
- Status: Issued (city: Open)
- Reported cost: $508,000
- ZIP code: 02135
- All permits at this address: https://nearbypermits.com/boston/address/231-foster-st/

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-15 04:07 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 231 Foster St: https://nearbypermits.com/boston/address/231-foster-st/