Sprinkler Fitters and Apprentices Local Union 550

West Roxbury, Massachusetts 02132
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Our Story

The Contractor Members of Sprinkler Fitters Local 550 work on many commercial/residential facilities in and around the Greater Boston Region.

Sprinkler Fitters and Apprentices Local Union 550 is dedicated to the education and training of its members. We strive to stay abreast of the continual evolution of fire sprinkler systems and fire safety regulations. Our Journeymen and Apprentices are among the best trained in the world. Continuing Education classes are offered on a regular basis to our Journeymen to keep them abreast of changes and trends in the sprinkler industry through a telecommunications link to the United Association. In addition, our apprentices are given hands on training in our state of the art valve rooms, CAD instruction in our computer lab, as well as classroom instruction. This training assures that our contractors and end-users get the ‘best and the brightest’ to design, install and service a quality fire protection system. No matter how big or small the project, our members work safely, proudly, reliably and quickly ensuring that the fire protection system will operate correctly every time and that projects remain on-budget.

Specializing in the following: 


  • Fire Safety Laws
  • Commericial / Residential
  • Design / Installation / Inspection / Repair
  • Sprinklers FM200 / Inergen
  • Special Hazards
  • Licensed & Insured Contractors
  • 24 Hour Emergency Service

Installation, Service, Testing & Inspection for the following systems:

Fire Pumps Pre-Action Systems 
Wet Systems Chemical (Inergen & FM-200)
Dry Systems Foam Systems

What We Do

Products and Services

Blue Book Network Classifications

We can be found under the following Blue Book Network Classifications.

CSI Codes

Our standard scope of services includes the following CSI Master Format™ code(s).

Commercial Construction Project Specializations

Apartments & Condominiums
Mixed Use
Residential Building
Single Family Residential

Company Information

Year Established:
Labor Affiliation:
Annual Volume:
Not Provided Request
Company Size:
100-249 Employees
Service Sector:
Public Private
Typical Project Size:
Not Provided Request
Project Types:
Not Provided Request

Associations & Memberships

Sprinkler Fitters & Apprentices Local 550
NESPTA (New England States Pipe Trades Assn.)
NFSA (National Fire Sprinkler Assn.)
Plumbers & Pipefitters Union
United Assn. of Plumbers Pipefitters & Sprinkler Fitters

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