Cambridge building & ADU permits
Recent permit activity, updated continuously.
199
Permits tracked
1
ADU permits
5
Distinct ZIP codes
Jun 12, 2026
Newest permit
Recent permits
A sample of the freshest permits in this jurisdiction — ZIP and city only (no street addresses).
| ZIP | Permit type | ADU type | Valuation | Applied |
|---|---|---|---|---|
| 02138 | Commercial | — | $25,000,000 | Jun 10, 2021 |
| 02141 | Residential | — | $365,000 | Aug 2, 2018 |
| 02138 | Residential | — | $450,000 | May 24, 2021 |
| 02141 | Commercial | — | $1,865,000 | Apr 9, 2021 |
| 02138 | Commercial | — | $77,000 | Sep 30, 2021 |
| 02138 | Other | — | $16,416,970 | Sep 6, 2019 |
| 02138 | Commercial | — | $60,867,859 | Feb 9, 2021 |
| 02139 | Residential | — | $890,000 | Sep 2, 2021 |
| 02139 | Residential | — | $533,000 | Sep 7, 2021 |
| 02139 | Residential | — | $540,000 | Sep 9, 2021 |
| 02140 | Commercial | — | $2,210,000 | Aug 25, 2021 |
| 02142 | Commercial | — | $159,948,370 | Aug 27, 2021 |
| 02139 | Residential | — | $750,000 | Dec 1, 2021 |
| 02138 | Residential | — | $701,450 | Oct 19, 2021 |
| 02138 | Commercial | — | $6,000,000 | Oct 18, 2021 |
| 02138 | Commercial | — | $114,750 | Nov 10, 2021 |
| 02138 | Residential | — | $37,000 | May 29, 2021 |
| 02141 | Commercial | — | $2,063,277 | Sep 30, 2021 |
| 02139 | Residential | — | $1,000 | Jan 27, 2022 |
| 02139 | Commercial | — | $10,000,000 | Oct 21, 2021 |
Top ZIP codes by recent activity
ADU types in the recent set
Housing law — Massachusetts
Massachusetts legalized accessory dwelling units by right statewide through the Affordable Homes Act (2024); as of February 2025, an ADU up to 900 sq ft is allowed by right in single-family zoning districts in nearly every community, without an owner-occupancy requirement.
The MBTA Communities Act (2021) requires the 177 MBTA-served cities and towns to zone for multifamily housing as of right near transit; the state's highest court upheld the law as constitutional and enforceable in 2025.
Data source
Sourced from data.cambridgema.gov (Socrata). PDDL — public domain.
Nearby cities — Massachusetts
Cambridge permit data — FAQ
Where does Igni get Cambridge permit data?
How fresh is Cambridge permit data?
Does Cambridge allow accessory dwelling units (ADUs)?
Get permit leads — Cambridge
Fresh, filterable residential and ADU permit leads from Cambridge — delivered before your competitors even know.
Informational only, not legal advice. Headline counts reflect all permits Igni has tracked for this jurisdiction; the table shows recent activity. Housing law changes — verify current statutes before relying on this.