# Mechanical (HVAC) permit Mechanical-193845 at 4 Walnut Ave, Cambridge

Cambridge Inspectional Services Department permit Mechanical-193845: issued Sep 15, 2022 for mechanical (hvac) work at 4 Walnut Ave. 

- Permit number: Mechanical-193845
- Issued: Sep 15, 2022
- Type of work: Mechanical (HVAC) (city: Mechanical)
- Status: Issued (city: Active)
- Reported cost: Not listed
- ZIP code: 02140
- All permits at this address: https://nearbypermits.com/cambridge/address/4-walnut-ave/

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Source: Cambridge Inspectional Services Department permit data (https://data.cambridgema.gov/d/3wsm-e5jx). Checked 2026-10-09 11:28 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 4 Walnut Ave: https://nearbypermits.com/cambridge/address/4-walnut-ave/