24 Hour Support: (978) 762-4600

About Us

O’Mahony & Sons Electrical, Inc. and O’Mahony Electrical Services, Inc. are family-owned and operated electrical contractors serving the greater Boston area. Proud members of the Local 103, the company employs a diverse crew of electricians to meet every project's needs.

Specialties & Project Areas

  • New buildings (Core & Shell buildouts)
  • Data Centers
  • Commercial Office Space
  • Laboratories
  • Restaurants
  • Medical Facilities
  • Fire Alarm System Installs & Upgrades
  • Corporate Interior Fit outs
  • Amenity Center Upgrades
  • Common Area Upgrades
  • Higher Education Laboratories
  • Classrooms
  • Parking Garages
  • Theaters
  • Hospitality & Convention Centers

The O’Mahony team has completed 6 new tenant buildings from the ground up, as well as two parking garages. The first building began being constructed in 2004, with the latest completed in 2019.

The O’Mahony team completed an office space to lab conversion over a period of 8 months beginning April 2021. The project had fierce deadlines, strict requirements, and in the midst of a global pandemic.

The Lifetime Center project consisted of the repositioning of the Atrium Mall located in Chestnut Hill. The Lifetime Center was converted into a state of the art Medical and Wellness center.

JPMC North Andover was completed by the O’Mahony team in March 2022. The project entailed all electrical necessary for the construction of a new out of the ground branch of JP Morgan Chase.

The O’Mahony team completed the tenant fit out of the new Spark Capital office in Boston, MA. The project was completed in March 2022 and included a variety of specialized and custom designed pieces

Ongoing Service and Repairs (to name a few):

  • Bulfinch Companies
  • Cushman and Wakefield
  • The Davis Companies
  • CBRE
  • Jones Lang LaSalle
  • Piedmont

Projects Completed:  Top 5 

  • Discovery Park Cambridge, MA (Base Core Shell and Tenant Fitouts, and Ongoing Maintenance)
  • Lifetime Center, Newton, MA (Base Core Shell and Tenant Fitouts)
  • Grubstreet
  • Fogg Pharmaceuticals
  • Simcere 


  • 101 Federal Street Amenity Center and Spec Suite
  • Moma Therapeutics
  • JPMC North Andover
  • Santander Bank Watertown
  • The Beat, Dorchester
  • Zealand Pharmaceuticals 

Other Notable Projects: 

  • 200 State Street Amenity Center
  • Lifetime Fitness at the Lifetime Center
  • Fire Alarm Installation for Dana Farber @ Lifetime Center
  • Marsh McLennan Boston Office
  • Century Bank, Salem NH
  • TD Bank - Multiple Locations
  • JPMC - Multiple Locations
  • Kintai
  • Polen Capital
  • Burns & Levinson
  • Karuna Therapeutics
  • Fusion Pharmaceuticals
  • Jenks 2 at New England Baptist Hospital
  • LifeMine Therapeutics
  • Luminex Trading 

2 DeBush Ave, Unit A1
Middleton, MA 01949




(978) 762-4600
Dial 2 for John O’Mahony
Dial 3 for Stephanie O’Mahony

BBB edit*Proud member of the Local 103 IBEW