Monthly archive · Suffolk County, Massachusetts
Boston Building Permits — May 2026
Every building permit issued by the City of Boston in May 2026: counts, reported value, permits by trade, and the month's biggest projects.
Source: City of Boston open data — approved building permits issued by the Inspectional Services Department. Source last updated: October 17, 2026 · Our last pull: October 18, 2026 · Figures are as reported by the City of Boston.
Coverage: this report covers building permits issued by the City of Boston (Inspectional Services Department). Suffolk County also contains Chelsea, Revere, and Winthrop, which publish their permits separately and are not in this feed, so totals here are Boston totals — labeled as such, never blended. Values are the declared project values applicants reported to the city, printed as reported; a Certificate of Occupancy restates its project's declared value, so one project's value can appear on both its building permit and its certificate.
PermitsByCounty data, Suffolk County (Boston), May 2026 · Source: City of Boston
Questions, answered from the data
What was the largest building permit issued in Boston in May 2026?
The largest was permit #ERT1525501 at 1266-1270 Commonwealth AV, with a reported project value of $88,434,555, issued in May 2026, as reported by the City of Boston.
Permits by trade — May 2026
| Trade | Permits issued | Reported value |
|---|---|---|
| Electrical | 930 | $61,589,774 |
| General & Other | 853 | $232,960,024 |
| Plumbing | 482 | $40,195,978 |
| Gas | 215 | $1,324,137 |
| Fire Alarm | 153 | $5,875,514 |
| Roofing | 146 | $15,410,841 |
| Solar | 128 | $7,779,830 |
| HVAC | 41 | $62,278,634 |
| Signage | 34 | $516,317 |
| New Construction | 33 | $183,807,318 |
| Fire Protection | 22 | $1,494,800 |
| Demolition | 12 | $7,078,709 |
| Fencing | 4 | $38,475 |
Biggest projects issued in May 2026
| Project (permit #) | Trade | Reported value | Issued |
|---|---|---|---|
| 1266-1270 Commonwealth AV #ERT1525501 Construction of a new, up to 6-story building containing approximately 206 multi-family dwelling units, app… | New Construction | $88,434,555 | 2026-05-26 |
| 700 Commonwealth AV #A1828902 BU Warren Towers - architectural finishes at the main entrance lobby on the 1st floor, 4th floor west recon… | General & Other | $30,085,206 | 2026-05-20 |
| 262 Saint Botolph ST #E1845947 Electrical power distribution system and lighting for a new construction high-rise building that includes n… | Electrical | $27,735,000 | 2026-05-07 |
| 345 Bunker Hill ST #COO1845894 Swimming Pool and Assembly;Certificate For Swimming Pools and Bath House Building with Roof TerraceALT14896… | General & Other | $25,407,000 | 2026-05-15 |
| 225 Franklin ST #ALT1837360 Draft Kings - 3,4,5th floors buildout of new offices work includes 2 interconnecting stairs from 3-4 & … | HVAC | $20,624,000 | 2026-05-13 |
| 118 B St #COO1850558 33 Residential Units &; ParkingCertificate for SameERT1493573 Issued 1/23/2025 &; A1797387 Issued 1… | New Construction | $17,105,000 | 2026-05-27 |
| 85 W Newton ST #COO1829008 Multi Purpose Community Arts Center with Offices &; Educational SpaceCertificate for SameERT1409317 Iss… | New Construction | $16,642,262 | 2026-05-05 |
| 375 Cummins HW #COO1840018 Forty (49) Nine Residential Units &; ParkingTemporary Certificate for Forty;(49) Nine Residential Units… | New Construction | $14,690,850 | 2026-05-15 |
| 380 Ruggles ST #FND1851320 At Risk/Demo of underground bunker and Foundation for new 19-story residence hall with approximately 972 st… | New Construction | $13,426,250 | 2026-05-21 |
| 370-410 Summer ST #ALT1837572 ;-Hasbro - P1, Ground, 10 - 16, roof Renovation of new HQ for offices work will include drywall, electrical… | HVAC | $13,135,000 | 2026-05-20 |
Full report: Suffolk County (Boston) county hub.