Home Addition Contractors in Newington, CT
D-Core Construction is a home addition contractor headquartered in Newington, CT, so this is the town we know street by street. We build room additions and second-story additions that connect to the existing house at the foundation, the framing, and the roofline, and we plan every step before anyone breaks ground in your yard.
Between 1940 and 1950, Newington grew faster than almost any other town in Connecticut, and much of the housing went up in the decades that followed. If your house comes from that building wave, an addition usually has to work around a modest lot and a simple roofline. We start by measuring what is there today, because the existing foundation and framing decide what the new space can carry.
As a general contractor for home addition work, we run the job in a fixed order: footings and foundation, framing, the roof transition, windows, insulation, and then the interior. Wiring and plumbing for the new rooms are laid out with the floor plan and coordinated while the walls are open, never squeezed in after drywall. You deal with one team from the first walkthrough to the final cleanup, and owner Felipe Perri stays on the project the whole way.
D-Core Construction LLC is licensed and insured and registered in Connecticut as a Home Improvement Contractor, HIC.0666861. The company brings 15+ years of experience and holds a 5.0 rating on Google. Being based in town also means we are close by after the job wraps up, which counts for a project that changes how your whole house works and how you live in it every day.
- Licensed & insured
- CT HIC.0666861
- 15+ years of experience
- 5.0 on Google
- Owner Felipe Perri

Building an Addition in Newington
Newington sits about 8 miles south of downtown Hartford, bordered by Hartford, Wethersfield, Rocky Hill, Berlin, New Britain, Farmington, and West Hartford. Permits come from the Newington Building Department at 200 Garfield Street, and the town's residential permit form names additions among the projects that need one. When an addition changes the footprint of the house, the town also asks for a zoning review.
The town's permit checklist notes that some projects need approval from the Central Connecticut Health District, which covers Newington, Berlin, Rocky Hill, and Wethersfield, or from the Conservation Commission. We raise those questions at the start, so the plans you sign off on match what the town will look at.
What a Newington Addition Covers
- 01First walkthrough and measurements of your house
- 02Footings and foundation sized for the new rooms
- 03Framing joined to the existing structure
- 04Roof transition where the old and new rooflines meet
- 05New windows and full insulation
- 06Wiring and plumbing coordinated with the floor plan
- 07Drywall, flooring, and interior finish work

Questions About Home Additions in Newington, CT
Do I need a permit for a home addition in Newington?
Yes. The town's residential permit form lists additions as work that requires a building permit, and a change to the building footprint also calls for a zoning review. We plan the drawings and the order of work around those reviews from day one.
Is D-Core actually based in Newington?
Yes, D-Core Construction LLC is headquartered in Newington. That puts Newington and the nearby Hartford County towns at the center of where we work.
Can my house take a second-story addition?
That depends on whether the existing foundation and framing can carry another floor. We check both before recommending a second story over a ground-level room addition. If going up is not a good fit, a rear or side addition is usually the next option we study.
What goes into the estimate?
The estimate breaks out the foundation, framing, roof tie-in, windows, insulation, coordinated wiring and plumbing, and the finishes for the new space. We go through each line with you, so you know where the money goes and which choices are yours. That line-by-line view is the honest route to an affordable home addition, because you only pay for what you decided on.
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Our team is ready to assist with home additions, bathroom remodeling, and basement projects. Contact us today for estimates, guidance, and reliable construction support.

