# Alteration or repair permit ALT1896826 at 21 Mayfield St, Boston

Boston Inspectional Services Department permit ALT1896826: issued Oct 13, 2026 for alteration or repair work at 21 Mayfield St. The owner seeks to subdivide the existing 11,746 Square foot lot into two new lots. Lot A will consist of 5,843 SF and Lot B will consist of 5,902 SF.

- Permit number: ALT1896826
- Issued: Oct 13, 2026
- Type of work: Alteration or repair (city: Subdivision Combining Lot, Long Form/Alteration Permit)
- Status: Issued (city: Open)
- Reported cost: $500
- ZIP code: 02125
- All permits at this address: https://nearbypermits.com/boston/address/21-mayfield-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-15 21:48 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 21 Mayfield St: https://nearbypermits.com/boston/address/21-mayfield-st/