Building permit intelligence · Boston, MA
66 Blossom St has 59 municipal building permits on file in Ward 3. The latest recorded activity was a fa permit dated Jul 21, 2026. Permits at this address represent $5MM–$25MM in total declared construction value. PropertyLabs also identified 6 mapped permits within 500 m of this address.
Fire Alarm
Fire Alarm
Fire alarm upgrade to existing system
Low Voltage
Fast Track Application
Low Voltage
6 mapped permits within 500 m, shown on the intelligence map above.
7 other addresses on Blossom St with municipal permit records in Boston.
This address has 59 permit records in PropertyLabs' public history and is located in Ward 3. The city figures below provide context without changing the focus of this exact-address record.
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.
PropertyLabs compiled this permit history from municipal public records for Boston, MA. The latest recorded permit activity at 66 Blossom St is dated Jul 21, 2026. Municipal records can be corrected or updated after publication.
See the contractors, applicants, permit holders, permit numbers, and project documents associated with 66 Blossom St in the PropertyLabs platform, along with alerts when new permits are filed at this address.
Low Voltage
Plumbing
Low Voltage
Electrical
Fire Alarm
Fast Track Application
Renovations - Interior NSC
Low Voltage
Low Voltage
Renovations - Interior NSC
Electrical
Renovations - Interior NSC
Renovations - Interior NSC
Fire Alarm
Electrical
Mass General Hospital - Replace an existing AHU on the Roof of the Bulfinch Building inc FA;
Electrical
Low Voltage
Renovations - Interior NSC
Hospital and LaboratoriesCertificate for;the Gray Jackson &; Bulfinch Bldg at MGH Office, Holding Rooms, Waiting Room -OnlyAlt 1117789 issued 10/6/20
Hospital and Laboratories ; Certificate for the Expansion for Cellular Therapy and Transplantation Lab. ALT1035398 issued 2/24/20
MGH ER Acute Psychiatry, 66 Blossom St., Boston. Low voltage HVAC control wiring - FGK - 208997
20-0233-10 MGH Low voltage T/D cabling
Renovation of a portion of the Gray Jackson &; Bulfinch bldg at MGH. Spaces include office, holding rooms, waiting room, and others. Work included MEP and architectural work elsewh…
Same project as the application SF1112708 ( one project in two adjacent building) - Existing Bulfinch bldg, 1st floor to be demolished and renovated into new Emergency Department A…
Renovation of 1st floor Bulfinch Building. Scope of work include furnish and installation of new boxes, wiring and fire alarm devices tied into existing Honeywell system on 1st flo…
Renovation of 1st floor Bulfinch Building. The scope of work consists of new lights, switches, power receptacles, and associated raceway, boxes and wiring,
Renovation of 1st floor in Bulfinch Building. Furnish and installation of boxes and raceway for tel/data, security and nurse call.
MGH - Bulfinch Cryo Expansion low voltage HVAC control wiring 208326 - FGK
RENOVATION/EXPANSION TO EXISTING CELLULAR THERAPY AND TRANSPLANTATION LAB, INCLUDING NEW FLOORING, CEILING, MILLWORK, FIRE PROTECTION, PLUMBING, HVAC, ELECTRICAL UPGRADES TO LAB, W…
SM#150126GGC-MGH CTTL Cryo Expansion- Bulfinch Building. Renovation of existing space. Relocate and add new lighting, power
SM#150126GGC-MGH CTTL Cryo Expansion- Bulfinch Building. Renovation of existing space. Relocate and add new fire alarm devices
SM#150126GGC-MGH CTTL Cryo Expansion- Bulfinch Building. Renovation of existing space. Relocate and add new security wiring Security wiring only for 1Card reader.
884979 - MGH - Bulfinch Basement Some demo, and adding new faucet to sink.
Renovation of an existing area.(MGH Bullfinch Basement E19117)
Install new stainless steel piping to serve new Liquid Nitrogen System in the basement.
Demo and reinstall new sink and associated piping in the basement of the MGH Gray/Jackson building.
Interior renovations within PET CT scanner rooms at the Bulfinch basement building. The scope of work includes the following: Removing and replacing existing flooring, lighting, pa…
Job# 19-0466-10 MGH-Bulfinch Bldg 1st fl-Ste 130- Low voltage T/D Cabling
Add (2) Duct Smoke Detectors, (2) Remote Test Stations & (1) Control Module on the 1st Floor of the Bulfinch Building as a part of the Jackson Pharmacy Renovation.
Bring power to new mechanical units in room 100M01 on the 1st Floor.
Interior renovation of existing office space at Massachusetts General Hospital. Scope of work includes removing and replacing existing flooring, lighting, paint, doors, furniture,…
SMC# -150113WAL Bulfinch 1- Infectious Disease Admin. office reno on 1st FL. Demo, New lighting and power
884967 - MGH - Bulfinch - Infectious Disease Replacing sink and drinking fountain.
Interior Renovation in the MGH Bulfinch Building. This work includes Demo, Interior finishes, and MEP's. The work will take place on Roof, Basement, and 1st floor in Bulfinch build…
MGH Bulfinch/Gray/Jackson IDF Closets, low voltage HVAC control wiring - FGK, 186544
Remove existing EPDM membrane roof and insulation and install new EPDM membrane roof with new insulation.
Replace existing fuel oil lines in basement to upgrade fuel oil system. The fuel lines run through the following buildings. A SF permit as been applied for each building. • Bartlet…
MGH Bulfinch Building Basement. Install low voltage control wiring to HVAC equipment for purpose of temperature controls. BCM5426 rc
Install 6 fixtures and 3 light sensors.
remove and replace existing windows.
MGH Bulfinch Building 2nd floor. Install low voltage control wiring to HVAC equipment for the purpose of temperature controls
Remove existing single pane glass window sashes and replace with new sashes to match exisiting profiles with insulated simulated glass units.
Short Form Bldg Permit · ROOF · Jul 22, 2026