# Alteration or repair permit SF1820284 at 434 Chelsea St, Boston

Boston Inspectional Services Department permit SF1820284: issued Mar 13, 2026 for alteration or repair work at 434 Chelsea St. Install Mitsubishi, Hyper Heat 3 Zone Mini Split System, 30k Heat Pump/Condenser on the Rooftop and the following Wall Mounted Units, 15k Main Office, 9k Kitchen and 6k for Smaller Office. Replacing existing Equipment.

- Permit number: SF1820284
- Issued: Mar 13, 2026
- Type of work: Alteration or repair (city: Interior/Exterior Work, Short Form Bldg Permit)
- Status: Issued (city: Open)
- Reported cost: $25,000
- ZIP code: 02128
- All permits at this address: https://nearbypermits.com/boston/address/434-chelsea-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-06 18:06 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 434 Chelsea St: https://nearbypermits.com/boston/address/434-chelsea-st/