# Alteration or repair permit A1153743 at 125 Summer St, Boston

Boston Inspectional Services Department permit A1153743: issued Mar 2, 2021 for alteration or repair work at 125 Summer St. Klaviyo 5th - 7th Floors: Correcting ALT1034391 description. No fitness center was altered, designed, or built. 32,900 Sq.ft. Interior Tenant fit-out of existing offices to include a kitchenette, and library. Includes base building restrooms and elevator lobbies.

- Permit number: A1153743
- Issued: Mar 2, 2021
- Type of work: Alteration or repair (city: Renovations - Interior NSC, Amendment to a Long Form)
- Status: Finished (city: Closed)
- Reported cost: Not listed
- ZIP code: 02110
- All permits at this address: https://nearbypermits.com/boston/address/125-summer-st/

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Source: Boston Inspectional Services Department permit data (https://data.boston.gov/dataset/approved-building-permits). Checked 2026-10-06 12:47 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 125 Summer St: https://nearbypermits.com/boston/address/125-summer-st/