Monthly permit report

Cambridge commercial building permits, September 2026

Biggest projects in September 2026

By declared value.

200 Technology Sq
Issued Sep 3 · 14 permits
$54.4M
Modifications to existing technical office on building constructed as of right in 1962. Renovation of interior tenant spaces including mechanical upgrades. Add access door with…
commercialBuildingCranshaw Construction Ne Lp
16 Divinity Ave
Issued Sep 28 · 7 permits
$12.2M
This project focuses on a renovation existing laboratory and office spaces located on the first floor of the Harvard Biological Laboratories Building, to provide new laboratory…
commercialBuildingSiena Construction
250 Massachusetts Ave

In September 2026, Cambridge issued 37 building permits on commercial and multifamily properties, on 30 projects, declaring $104M of work.
The busiest trade was general building (37 permits).
The most active contractor was The Bulfinch Companies, Inc., with 2 permits.
The largest project was at 200 Technology Sq, with $54.4M declared.
Half of the month’s permits were issued within 22 days of application.

Source: building permit records from official city open-data portals, checked daily. Data through October 29, 2026. How we count