Contractors in New Hampshire

Jay Steel is a structural steel construction management company serving the Northeastern United States. They focus on quality and fast turnaround, handling projects of any size.

Jewil Structural Detailing LLC specializes in providing high-quality shop and field drawings for a wide range of projects, including office buildings, retail spaces, schools, hotels, healthcare facilities, residential properties, renovations, and custom framing.

Jolt Electric & HVAC SVC LLC is a veteran-owned business with 30 years of experience offering electrical and HVAC services for residential, commercial, and industrial clients.

Jones & Beach Engineers, Inc. is a diversified civil site engineering firm based in New Hampshire, specializing in civil and sanitary engineering, land surveying, and construction services. They serve industrial, municipal, commercial, and residential clients across the seacoast region of New Hampshire, northern Massachusetts, and southern Maine.

Jusczak Electric LLC is an electrical contractor providing commercial, industrial, and residential services.

Langley Construction is a commercial construction company in Southern New Hampshire.

A+ Automation specializes in Home Automation Planning, Sales, Installation and Support. Rodney Lackie, President and Owner, has been a Master Electrician for 35 years. The business started as Littleton Electric Solutions and transitioned to A+ Automation to focus on smart home technology.

M&K Commercial Diving LLC is a commercial diving and marine construction contractor specializing in underwater inspections, critical repairs, and full-scale construction including pile driving, seawall restoration, and waterfront infrastructure.

M&M Construction Services is a full-service general construction contractor with close to four decades of experience. They specialize in commercial concepts across the retail, restaurant, and private commercial sectors, handling projects from small add-ons to ground-up construction.

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MSI Mechanical Systems Inc. is a full-service mechanical contractor and facilities service provider for Commercial, Industrial & Retail projects. They specialize in HVAC & Process Piping systems.

Mark Carrier Construction, Inc. (MCCI) provides general contracting, design-build and construction management services. They have experience in commercial, healthcare, hospitality, residential and government sectors, as well as in mill building rehabilitation and restoration.

Martineau Electric Inc. provides installation and maintenance of industrial and commercial electrical systems in and surrounding the NH Seacoast area. They wire commercial & industrial electrical projects for new construction buildings and electrical systems and rewiring renovations in NH, MA, and ME areas.

Master Framing is a construction company dedicated to delivering high-quality, innovative, and sustainable building solutions.

McDonald Morrissey Associates (MMA) was founded in 1990 and is nationally recognized for expertise in the analysis of complex groundwater flow systems for industrial and government clients. They provide a wide range of groundwater project services.

Century-Tywood specializes in high-quality sheet metal fabrication and contract manufacturing, focusing on delivering exceptional products at competitive price points.

Midway Utility Contracting, LLC is a leading provider of utility construction services in the New England Area. They specialize in excavation, underground Natural Gas main and service installation/renewal, and electrical conduit installations, as well as milling and paving operations.

Milestone Construction, LLC is a commercial contracting company providing preconstruction, construction management, general contracting, and design-build services.

Monadnock Cooling Systems serves the central and southern New Hampshire and Massachusetts area for commercial, industrial, and institutional HVAC/R service and installation projects.

The NLS Group provides consulting services for site-dependent industries.

New England Barricade Sign & Safety provides quality traffic control signage, barricades, and safety equipment for the construction and highway industries, as well as municipalities.

Mark Ginnard started New Hampshire Steel Erectors in 1993 to complement his existing fabrication operation, New Hampshire Steel Fabricators, to provide to clients a “all inclusive” approach to miscellaneous metals contracts. New Hampshire Steel Erectors joined Union Ironworkers Local 7, of Boston, a few years later as a signatory contractor. Nearly 20 years later the successful collaboration between New Hampshire Steel Erectors and Local 7 continues to this day installing miscellaneous metal packages throughout New England, New York city and Mid-Atlantic region.