General Contractor Services on Long Island

Your Trusted Partner for High-Quality Construction & Remodeling Projects

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Why Long Island Homeowners Trust Us for General Contracting Services

Expert General Contracting Services Backed by Over 30 Years of Experience

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Licensed & Insured

Our team includes certified professionals with full insurance coverage, ensuring reliable and safe service for every project.

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30 Years of Expertise

Providing Long Island with high-quality construction, remodeling, and renovation services since 1994.

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Free Estimates

Transparent pricing with no hidden costs. Request your free project estimate today.

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Full-Service General Contractor

From initial design to final build, we handle every aspect of your construction project.

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Energy-Efficient Construction

Save on future utility bills with energy-efficient building designs and materials.

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Satisfaction Guaranteed

We stand behind every project, ensuring client satisfaction from start to finish.

Serving Long Island, Suffolk County, and Nassau County with Our General Contracting Services

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What Our Long Island Clients Are Saying

Real Reviews from Homeowners Like You

Excellent service! My AC was fixed quickly, and the technician was so knowledgeable.

Jane D., Nassau County

★★★★★

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Awards and Accreditation

Contact NJM Mechanical & Contracting for General Contractor Services

Let’s Build Your Dream Project—Residential or Commercial

From new home construction to commercial remodeling, NJM Mechanical & Contracting has the experience and expertise to deliver exceptional results. For over 30 years, we’ve been Long Island’s trusted general contractor, specializing in everything from kitchen remodels to full-scale commercial construction. Our commitment to quality craftsmanship and client satisfaction is at the core of everything we do.

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