Mercer County, New Jersey · Family-owned since 2001
Home Additions in Trenton, Hamilton, Princeton and Mercer County, NJ
More room without moving. Ground-floor and second-story home additions built by a family-owned Trenton general contractor with more than 25 years in business and its own crew.

What we do
Additions built start to finish by one contractor
- Second-story additions, including over an existing garage
- Ground-floor room and living-space additions
- Foundations, crawl spaces and framing
- Roofing, including standing-seam metal, and skylights
- Electrical, HVAC and insulation handled under one contract
- Township permits filed and inspections scheduled by us
- Interior finishing: flooring, painting, kitchens and bathrooms
How it works
Three steps from call to finished job
Tell us about the project
Call or email with a few photos. We visit and measure.
Get a written estimate
A clear scope and price. Monthly payment options are available through our financing partner, Hearth.
Our crew does the work
GCC's own crew, with owner Bilal Khan as your contact from estimate to final walkthrough.
What clients say
Rated 5.0 on Google by 26 reviewers
★★★★★
“Helped me build out my barber shop. Very reliable. Great work.”
Vinny S. · Google review
★★★★★
“The craftsmanship, attention to detail, and professionalism were outstanding.”
Hema R. · Google review
★★★★★
“Bilal Khan and his team did amazing job. He is very professional and expert.”
Kalimullah K. · Google review
★★★★★
“…my parents are in love with their new bathroom. Thank you Bilal and team!”
Saad A. · Google review
★★★★★
“I found them to be reliable, efficient, fairly priced, and high quality.”
Muhammad M. · Google review
★★★★★
“Plus, they finished the job ahead of schedule!”
Yousaf Q. · Google review
★★★★★
“He took our vision for the bathroom and delivered.”
Amenah S. · Google review
★★★★★
“Their transparent communication ensures no hidden fees or surprises.”
Victoria U. · Google review
★★★★★
“…thoroughly professional with excellent quality and got the job done without any hassle.”
Raheem L. · Google review
★★★★★
“…completely transformed my living room into a cozy sanctuary.”
Bilal A. · Google review
★★★★★
“Amazing work, great prices and outstanding communication.”
Ahmed T. · Google review
★★★★★
“This is how contracting should be done.”
Miyan A. · Google review
★★★★★
“…an excellent job doing a renovation on the inside of my home…”
Zain M. · Google review
★★★★★
“There’s nothing I don’t trust Global with. Highly Recommend.”
Zohan A. · Google review
★★★★★
“Great work on my bathroom by professionals who showed great attention to detail.”
Frank · Google review
★★★★★
“We had our bathroom redone. Great service, efficient and professional.”
Zeeshan Q. · Google review
★★★★★
“Bilal designed this wall himself. Came out great.”
Ashlan K. · Google review
★★★★★
“Very Professional, thorough clean up after project.”
A M · Google review
★★★★★
“Awesome experience, totally hands off at a reasonable price”
Ahmed E. · Google review
★★★★★
“Greatest contracting company around.”
Chance R. · Google review
Home addition questions
What size additions does GCC build?
Two recent examples: a 1,340 square foot ground-floor addition in West Windsor with a new foundation, a metal-roofed connector to the existing house and a skylight; and a second-story addition over a garage in Robbinsville with a bedroom, walk-in closet, bathroom, multipurpose room and rear deck.
Does GCC handle permits and inspections?
Yes. We file the permit paperwork with your township and schedule each inspection, from footings to final.
Do I need an architect?
Additions are built from stamped drawings. We work from your architect’s plans and coordinate with them when the design changes.
How much does a home addition cost?
It depends on the size and what goes inside it. We give a written estimate after visiting the property.
Who builds the addition?
GCC’s own crew, with owner Bilal Khan as your contact throughout.
Is GCC registered in New Jersey?
Yes. Global Construction Contractors, Inc. holds NJ Home Improvement Contractor Registration #13VH00635400 and NJ Public Works Contractor Registration #609201.
Can I pay monthly?
Yes. Our financing partner, Hearth, offers monthly payment plans for home projects.
What towns does GCC serve?
Trenton, Hamilton, Princeton, Princeton Junction, West Windsor, Lawrenceville, Robbinsville, Chesterfield, New Egypt and Burlington, along with the rest of Mercer County.
Thinking about adding space?
Send a few photos and tell us what you have in mind. We are open Monday to Saturday, 9am to 5pm.