Home Extensions and Dormer Additions

Add Square Footage and Value with a Seamless Home Addition.

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Masonry and hardscaping job done by J.B.T Contracting of Suffolk County, NY
HOME ADDITION SPECIALISTS

What Are Extensions and Dormers?

Extensions and dormers are construction projects designed to increase the habitable square footage of a home. Extensions expand the house footprint outwards (building out), while Dormers expand the roofline upwards (building up). At J.B.T Contracting LLC, we manage these complex projects for homeowners in Nesconset, St. James, Lake Grove, and Smithtown.

As a full-service General Contractor, we handle every phase of the build. From pouring the new foundation and framing the structure to installing the roofing and finishing the interior, we ensure the new addition blends seamlessly with your existing home.

Benefits of Adding an Extension


 

1. Room to Grow

Don't move just because you need more space. An extension provides the extra bedrooms, larger kitchen, or family room your growing family needs without the stress and cost of buying a new house.

2. Seamless Integration

A bad addition looks "tacked on." We meticulously match your existing siding, roofing, and interior trim so the new structure looks like it was always part of the original architectural design.

3. Increased Property Value

Square footage is the number one driver of real estate value. Adding a master suite dormer or a rear kitchen extension significantly increases the market value of your property.
Laundry and mudroom job done by J.B.T Contracting of Suffolk County, NY

Our Home Addition Services

We build additions that maximize your space and budget.
 

• Rear & Side Extensions:

We expand your home's footprint to create spacious new kitchens, great rooms, or in-law suites on the first floor.


• Second Story Dormers:

We open up cramped attics by building shed or doghouse dormers, creating full-height ceilings for new bedrooms and bathrooms.


• Master Suite Additions:

Treat yourself to luxury. We design and build private master wings complete with walk-in closets and en-suite bathrooms.


• Structural Framing:

Our team handles all heavy structural work, including tying the new roofline into the old one and ensuring proper load paths.


• Foundation Work:

We pour steel-reinforced concrete foundations and footings that meet all local building codes for stability.


• Full Interior Finishing:

We don't just build the shell; we handle the insulation, drywall, flooring, and electrical to make the space move-in ready.
Masonry and hardscaping job done by J.B.T Contracting of Suffolk County, NY

Masonry and hardscaping job done by J.B.T Contracting of Suffolk County, NY

Laundry and mudroom job done by J.B.T Contracting of Suffolk County, NY

Laundry and mudroom job done by J.B.T Contracting of Suffolk County, NY

Masonry and hardscaping job done by J.B.T Contracting of Suffolk County, NY

Expand Your Living Space

Love your neighborhood but need more room? J.B.T Contracting LLC is ready to build your dream addition in Hauppauge, Commack, and beyond.
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