# Alteration or repair permit ALT1871335 at 405 Main St, Boston

Boston Inspectional Services Department permit ALT1871335: issued Aug 27, 2026 for alteration or repair work at 405 Main St. Gut renovation of an existing three-family dwelling with a small rear addition. No change in use or occupancy. Replace the existing egress configuration of one interior stair and one exterior fire escape with one interior exit stair and a complete sprinkler system.

- Permit number: ALT1871335
- Issued: Aug 27, 2026
- Type of work: Alteration or repair (city: Interior/Exterior Work, Long Form/Alteration Permit)
- Status: Issued (city: Open)
- Reported cost: $1,072,000
- ZIP code: 02129
- All permits at this address: https://nearbypermits.com/boston/address/405-main-st/

---
Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-06 09:36 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 405 Main St: https://nearbypermits.com/boston/address/405-main-st/