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Best basement remodelers near New Haven, CT

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Top-Rated Basement remodelers in New Haven - Updated Nov 2026

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
Basement - Remodel

Serving New Haven, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Very well done job! Service technicians were knowledgeable and professional, thorough and efficient, kind and polite. I highly recommend the company for basement service."
Additional Photos
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+12

178 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Everything Under The Roof LLC
Everything Under The Roof LLC
4.8(
43
)
Basement - Remodel

Serving New Haven, CT and surrounding areas

Approved

In business since 2006

Free estimates

Customers say: True professional

"My wife and I needed to finish our basement to accommodate our growing kids. We had an excellent experience with Everything Under The Roof. They really listened to what we wanted to build and everything was done well, on-time, and on-budget. One thing I particularly appreciated is that the owner was onsite doing the work, and not simply sending a team of workers. We'll definitely be using Everything Under The Roof for any future projects."
hickory kitchen
master bath
Maple kitchen
double vanity
walk-in shower with bench

+4

Response time2 days
Response rate100%
4 neighbors recently requested a quote
Avatar for TimberWolf Contracting LLC.
TimberWolf Contracting LLC.
4.2(
55
)
Basement - Remodel

Serving New Haven, CT and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"Clinton Ashe of TimberWolf Contracting was immediately responsive to my initial email and provided a prompt and detailed estimate for repairs. We live in Italy currently and have renters in our home in CT and he worked with them to accommodate their schedule. His expertise and skills are appreciated by our family as well as the renters in the home. He provided regular updates and suggested items that needed repair which was very welcome as our distance from the project limits our ability to know the state of the home. I have recommended him and will continue to recommend and utilize his services for any future projects with the home. It is a special kind of relief to have found a skilled craftsman who so painstakingly coordinates with his clients and I feel so grateful to have found him."
Additional Photos
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+16

Response rate100%
1 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Pro Services
Pro Services
4.8(
150
)
Basement - Remodel

Serving New Haven, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Steve and team did an amazing job. They replaced the fireplace flue and left no dust and were very careful around the house and the roof. Excellent work, happy customer. Thanks!!"
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
47 neighbors recently requested a quote
Clairmont Remodeling
4.1(
35
)
Basement - Remodel

Serving New Haven, CT and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Kitchen remodel. Highly professional excellent customer service. Quality of work performed by every crew member was excellent. Crew members were very friendly, helpful and respectful. Completed the job on the timeline given and made aware of any unexpected costs. . Very pleased with the final result. Would hire again for future projects."
Response time3 days
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Mark's Painting and Home Improvements LLC
Mark's Painting and Home Improvements LLC
4.7(
14
)
Basement - Remodel

Serving New Haven, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Mark was extremely professional and courteous. I got 3 estimates some of them ridiculous Mark gave me a very reasonable price Mark and his crew tore down bathroom to the studs put up new walls tiled the floor and walls. He installed toilet vanity mirror lighting and built a custom shower stall for the same price as a cheap shower tray you buy at home depot. He made some great suggestions. The bathroom came out great . My expectations were exceeded . I don't have to look for a contractor Mark is my contractor for any future projects. I highly recommend Mark and his crew for any work you need done He also installed my wooden staircase in my basement Mark takes pride in his work and he makes sure you are happy with his work"
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
Additional Photos
Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
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Basement Remodel FAQs, answered by experts

A finished basement must have a heat and electrical supply with an entrance that meets building code requirements, such as a stairwell to the home's main living space. It often must include finished walls, ceilings, and floors. If the finished basement includes a bedroom, it should have a heat source, an egress window, and a closet.

Remodeling, as opposed to finishing, means altering an already finished basement by adding a bathroom, bedroom, or living area.

Although it’s not required, air ventilation in a finished basement can help improve the air quality, prevent moisture and mold issues, keep musty odors away, and also maintain the air quality throughout the rest of your home. Proper ventilation will help maintain the value of your investment in finishing your basement. Try basement ventilation methods like installing vents or a dehumidifier for best results.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

You can paint your ceiling or install a drywall ceiling if the ceiling is unfinished, as they take up less headroom than drop ceilings. 

If there are pipes in the way of ceiling installation, you can do one of two things: reroute the pipes or adjust the installation to fit, which will cost extra.

The difficulty of adding a basement to an existing house can vary depending on the house’s location, the size of the basement, and the type and condition of the existing foundation. Adding a basement is a job best handled by the pros, so you’ll need to enlist professional help for this project.

The New Haven, CT homeowners’ guide to basement remodels

From average costs to expert advice, get all the answers you need to get your job done.