Are there building permits at 309 Chelsea St, Boston?

309 Chelsea St has 19 municipal building permits on record, with the latest activity dated May 1, 2026.

What construction activity is near 309 Chelsea St?

4 mapped permits were found within 500 m of 309 Chelsea St.

What is the declared permit value at 309 Chelsea St?

Permits recorded at 309 Chelsea St represent $100K–$500K in total declared construction value.

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PropertyLabsBostonAddress intelligence

309 Chelsea St

Building permit intelligence · Boston, MA

19 at this address4 nearby within 500 m

309 Chelsea St has 19 municipal building permits on file in Ward 1. The latest recorded activity was a electrical permit dated May 1, 2026. Permits at this address represent $100K–$500K in total declared construction value. PropertyLabs also identified 4 mapped permits within 500 m of this address.

At this address: 19
Nearby (500 m): 4
Latest activity: May 1, 2026
Total permitted value: $100K–$500K

Permit activity timeline

ELECTRICAL · 1-3FAMOpenValue not reportedMay 1, 2026
Electrical
ELECTRICAL · 1-3FAMOpenValue not reportedMay 1, 2026
Electrical
ELECTRICAL · 1-3FAMOpenValue not reportedMay 1, 2026
Electrical
PLUMBING · 1-3FAMOpenValue not reportedApr 23, 2026
Plumbing
PLUMBING · 1-3FAMOpenValue not reportedApr 23, 2026
Plumbing
PLUMBING · 1-3FAMOpenValue not reportedApr 23, 2026
Plumbing

Development activity near 309 Chelsea St

4 mapped permits within 500 m, shown on the intelligence map above.

Browse recent permits near this address

More permits on Chelsea St

11 other addresses on Chelsea St with municipal permit records in Boston.

All Chelsea St permits

309 Chelsea St in the Boston permit market

This address has 19 permit records in PropertyLabs' public history and is located in Ward 1. The city figures below provide context without changing the focus of this exact-address record.

Explore Boston building permits

City address-linked rows: 658,435
City, trailing 90 days: 0
City, trailing 30 days: 0

City coverage counts address-linked rows and does not add overlapping canonical tables. Rolling windows are inclusive, use UTC boundaries, and end Aug 3, 2026.

Permit questions about 309 Chelsea St

Are there building permits at this address?: 309 Chelsea St has 19 municipal building permits on record, with the latest activity dated May 1, 2026.
What construction activity is nearby?: 4 mapped permits were found within 500 m of 309 Chelsea St.
What is the declared permit value?: Permits recorded at 309 Chelsea St represent $100K–$500K in total declared construction value.

About this address record

PropertyLabs compiled this permit history from municipal public records for Boston, MA. The latest recorded permit activity at 309 Chelsea St is dated May 1, 2026. Municipal records can be corrected or updated after publication.

Sources and data notes

Published by Boston, MA via Boston Open Data.
Municipal sources remain authoritative for permit status and details.
Coverage context: PropertyLabs Coverage Observatory and the permit-data methodology.
Address research workflow: how to check building permits for an address.
City research: Boston Building Permit Activity Through July 19, 2026.
Declared values may be applicant-reported and are not independently verified. See what declared construction value means.
Permit issuance does not confirm that construction has started.
Records may be delayed, revised, or incomplete relative to the municipal source.
Spot an error? Contact us with a correction.

Contractors and applicants associated with these permits

See the contractors, applicants, permit holders, permit numbers, and project documents associated with 309 Chelsea St in the PropertyLabs platform, along with alerts when new permits are filed at this address.

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