Are there building permits at 12 Thornton St, Boston?

12 Thornton St has 5 municipal building permits on record, with the latest activity dated May 14, 2026.

What construction activity is near 12 Thornton St?

3 mapped permits were found within 2 km of 12 Thornton St.

What is the declared permit value at 12 Thornton St?

Permits recorded at 12 Thornton St represent $10K–$50K in total declared construction value.

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PropertyLabsBostonAddress intelligence

12 Thornton St

Building permit intelligence · Boston, MA

5 at this address3 nearby within 2 km

12 Thornton St has 5 municipal building permits on file in Ward 9. The latest recorded activity was a roof permit dated May 14, 2026. Permits at this address represent $10K–$50K in total declared construction value. PropertyLabs also identified 3 mapped permits within 2 km of this address.

At this address: 5
Nearby (2 km): 3
Latest activity: May 14, 2026
Total permitted value: $10K–$50K

Permit activity timeline

ROOF · 1-3FAMOpenValue not reportedMay 14, 2026
Roofing
ROOF · 1-3FAMOpenValue not reportedMay 14, 2026
Roofing
GAS · 1-2FAMClosedValue not reportedJan 5, 2023
Gas
PLUMBING · 1-2FAMClosedValue not reportedJan 5, 2023
Plumbing
Short Form Bldg Permit · EXTRENOpen$10K–$50KSep 19, 2018
Repair handrails, and decking;, remove replace damaged gutters and fascia board.; No structural work.

Development activity near 12 Thornton St

3 mapped permits within 2 km, shown on the intelligence map above.

Browse recent permits near this address

More permits on Thornton St

9 other addresses on Thornton St with municipal permit records in Boston.

All Thornton St permits

12 Thornton St in the Boston permit market

This address has 5 permit records in PropertyLabs' public history and is located in Ward 9. The city figures below provide context without changing the focus of this exact-address record.

Explore Boston building permits

City address-linked rows: 657,836
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 1, 2026.

Permit questions about 12 Thornton St

Are there building permits at this address?: 12 Thornton St has 5 municipal building permits on record, with the latest activity dated May 14, 2026.
What construction activity is nearby?: 3 mapped permits were found within 2 km of 12 Thornton St.
What is the declared permit value?: Permits recorded at 12 Thornton St represent $10K–$50K 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 12 Thornton St is dated May 14, 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 12 Thornton St in the PropertyLabs platform, along with alerts when new permits are filed at this address.

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