D-Core Construction

Home Addition Contractors in Hartford County, CT

D-Core Construction is a home addition contractor based in Newington, serving Hartford County, CT. We build room additions and second-story additions in Newington, West Hartford, Avon, Simsbury, Glastonbury, Farmington, and Wethersfield, with each project planned around the house, the lot, and the rules of its town.

Hartford County homes range from colonial-era houses in Wethersfield and Farmington to the ranches and split-levels built on West Hartford's outer streets through the late 1970s. That range means no single approach fits every addition. We start each project by understanding the house: how it is built, how the family uses it, and what the new space needs to accomplish. Then we look at what the town will require before any design is final.

Construction follows a clear sequence: foundation, framing, roof transition, windows, insulation, and interior finishing, with electrical and plumbing coordinated within the build. One team handles the full job, and owner Felipe Perri stays involved from start to finish. As a general contractor for home addition projects, we schedule each trade so one phase is finished and checked before the next one starts.

Every one of these towns gets the same credentials: D-Core Construction LLC is licensed and insured, holds Connecticut HIC.0666861, brings 15+ years of experience, and is rated 5.0 on Google. Because we are based in Newington, which borders several of the towns we serve, Hartford County is our everyday working area. Affordable home additions here start the same way in every town: a written scope you can read line by line, with each phase spelled out so you can see where the budget goes.

  • Licensed & insured
  • CT HIC.0666861
  • 15+ years of experience
  • 5.0 on Google
  • Owner Felipe Perri
Home addition under construction with new framing tied into the existing house.

Town Rules Across Hartford County

Connecticut dissolved county government in 1960, so permits and inspections are handled town by town, with each building official enforcing the State Building Code. That means the process for an addition in Glastonbury is not the same as in Avon or Newington.

Several towns in the county have local historic districts with their own review, including West Hartford, Simsbury's East Weatogue, Farmington and Unionville, Old Wethersfield, and Glastonbury. We check your town's requirements early so the design reflects them.

See more of our work in Hartford County, CT.

What We Cover in Hartford County

  1. 01Permit and historic district check for your town
  2. 02Foundation excavation and concrete work
  3. 03Framing that carries the new floor or roof loads
  4. 04Roof tie-in sealed against Connecticut winters
  5. 05Window installation and wall insulation
  6. 06Wiring and plumbing laid out with the plan
  7. 07Finish carpentry and drywall
Finished home exterior with new siding, windows, and a roofline tied into the original house.

Questions About Home Additions in Hartford County, CT

Which Hartford County towns do you serve for additions?

We serve Newington, West Hartford, Avon, Simsbury, Glastonbury, Farmington, and Wethersfield. Each town has its own page with local details.

Is the permit process the same in every town?

No. Since Connecticut has no county government, each town runs its own building department and permit process. Some towns also have historic district review.

Why work with a contractor based in Newington?

Newington borders West Hartford, Wethersfield, and Farmington, three of the county towns we serve, so much of our work happens close to home. It also means we know the area's housing well.

How do I get an estimate?

Call or email to schedule a visit. After walking through your house and hearing what you want from the new space, we put a written scope and estimate in your hands.

Get In Touch With Our Construction Specialists

Our team is ready to assist with home additions, bathroom remodeling, and basement projects. Contact us today for estimates, guidance, and reliable construction support.