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About Us 

GTG Builders

Over 65+ years of Experience

Feeling overwhelmed by building your dream home? It’s no secret the process can be lengthy and complicated, leaving you anxious about finding the right builder. That’s why GTG Builders, the experts of the New Jersey area, have designed a process to help you build your home with confidence and ease. At GTG Builders, we provide a full-service experience that’s tailored to each client’s needs and goals to build your perfect high-quality custom home. As 3rd Generation Home Builders, we understand that your home is more than just a custom project; it’s a perfect haven tailored to your unique lifestyle. Thats why we focus on a limited number of clients a year to ensure the highest level of service and craftsmanship. From acquiring land for your custom home and connecting you with a talented designer or architect to helping you define your budget and constructing your New Jersey custom home, we strive to make your building experience seamless and even enjoyable.




Responsive Communication

Imagine having a builder you
can rely on every step of the way.
Our lightning-fast response time
and expert knowledge keeps you
assured your project is on track.


Upfront Pricing

Don’t let hidden costs keep you up at night. At GTG Builders, transparency is key. We believe in openly discussing costs so you can make confident and informed decisions.


High Quality Craftsmanship

Discover the peace of mind that
comes with a forever home that’s
built right - no shortcuts, no corners
cut. Our signature craftsmanship
goes beyond quality to include all the
intricate details that make a custom
home truly special.


1 | Design

Once you're ready for GTG to build your custom home, we pair you with an architect that's perfect for the job. We provide advice around design best practices and material selection to ensure your custom home is exactly as you envisioned.

2 | Construction

To make the construction process as smooth as possible, GTG Builders provides you with a dedicated construction team, regular on-site meetings, and access to our project management software. We also handle everything from inspections to permits.

3 | Post-Construction

After you've moved into your dream home, we're available to you no matter what. We'll check in regularly to be certain you're still enjoying your brand-new custom home. We're committed to your experience and the longevity of the custom home we've delivered.

Our Team

Second-Generation Custom Home Builders

The only way we can guarantee your satisfaction and hold our place at the top in the custom home builder market is simple - you deal only with the owners! We're here for you, 24 hours a day and 7 days a week before, during, and after your project is completed.

Andrew Giannattasio GTG Builders

Andrew Giannattasio

Andrew Giannattasio, a founding member of GTG Builders, is a recognized name in the local building and real estate industries. 

Paul Giannattasio GTG Builders

Paul Giannattasio

Paul Giannattasio is one of the founding partners of GTG Custom Home Builders. 

Bella Giannattasio GTG Builders

Bella Giannattasio

Bella Giannattasio guides the client through GTG’s home building experience.

Max Giannattasio GTG Builders

Max Giannattasio

Max Giannattasio joined the team in 2019 to ensure day-to-day operations run smoothly and meet GTG’s standards.


We build beautiful, luxury custom homes in Central New Jersey, including Hunterdon County, Somerset County, and Mercer County. Contact us to find out if we serve your area!

Our Service Area

Hunterdon County
  • Flemington
  • Raritan
  • Raritan Township
  • Delaware Township
  • East Amwell
  • Clinton 
  • Readington 
  • Tewksbury
  • Califon
Somerset County
  • Hillsborough
  • Franklin
  • Somerset
  • Montgomery
  • Skillman
  • Bedminster
Union County
  • Berkley Heights
  • New Providence
Mercer County
  • Hopewell
  • Pennington
  • Princeton
  • Lawrence
Middlesex County
  • Plainsboro
Morris County
  • Chester
  • Chatham 
  • Mendham



GTG Builders Custom Home Houzz Awards
Award of Excellence Winner 2019 GTG Builders
Award of Excellence Winner 2020 GTG Builders
2021 Awards of Excellence Winner GTG Builders in NJ


Start Building Your Dream Central New Jersey Custom Home

We're Here to Help


Whether it’s your plan or ours, it could be one of our lots or yours. We are committed to a home building experience that you have never had before.

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