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Find Basement remodelers in Fishers Island

Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.7(
176
)

Serving Fishers Island, NY and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Connecticut Basement Systems prides themselves on their superior customer service, and they really live up to that. Their communication, quality of products and service, and attentiveness to customer needs is unsurpassed. Here are a couple of examples of how they go the extra mile for a satisfied customer: They installed their basement drainage system around my existing heating oil tank, but as I'm planning to convert away from oil this summer, they offered to come back AT NO EXTRA CHARGE once the tank is removed, to reroute the drainage system. Also, I was scheduled for a 3-day project, which included the replacement of some flooring in my basement. On the day the project began, we reconsidered the need for the flooring, and asked if we could cancel that portion of the job. They could not have been more accommodating to that adjustment, and made the change with no questions asked or negative attitude, even though it significantly lowered the price of the project and eliminated a whole day of scheduled work on 2-days' notice. That sort of total customer dedication is rare. I recommend them highly."
Finished basement in CT
Basement Finishing in CT
Basement Finishing in CT
Basement Finishing in CT
Basement Finishing in CT

+13

Response time10 hrs
154 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Refined Renovators & Design
Refined Renovators & Design
5.0(
8
)

Serving Fishers Island, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"We had various rooms that needed renovations as new home buyers. We could not be happier with the work done! Care to detail and listening to how we wanted things done was delivered. We were thankful for the suggestions and ideas that came from a professional perspective as it made our home all the more special! Highly recommend. "
comfortable spaces
sunroom
Beautiful Bathroom
Primary Bedroom
custom cabinets

+8

Response time5 hrs
Response rate93%
18 neighbors recently requested a quote
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
5.0(
12
)

Serving Fishers Island, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: Quick response

"Arthur gave us a fair and competitive estimate and was able to start work quickly thereafter. He and his team did an excellent job gutting and totally remodeling two bathrooms and a closet as well as redoing some of the wood flooring, moving vents, and moving hallways. Arthur himself was at the home everyday and did the important work himself. He also went the extra mile in helping us with small projects around the major project as they came up. He was extremely responsive in provided us with timely updates. When complications occurred (due to the house having not been renovated in 40 years) he was clear and helpful in keeping the project on schedule. He was extremely honest and I trusted him to be alone in my house for weeks on end with his team. I would/plan to work with Arthur again in the future for my home renovation projects."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cocos Custom Building LLC
Cocos Custom Building LLC
4.8(
8
)

Serving Fishers Island, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"We've never had luck with major home modifications—this was smooth sailing the entire way. Our project was a teardown and complete re-side, and Cocos did a fantastic job. We have a tricky home with a lot of angles that make no sense—Cocos did a brilliant job strategizing how everything should be executed, and the 50-year-old home looks brand new. Danielle, Keith and Matt not only executed at the highest level, they stayed in communication literally every day to make sure there were no surprises and that we were happy with the progress. If you're looking for a home siding partner, don't hesitate to hire Cocos. They were top notch and we are very happy/"
Exterior Remodel
Modular Set And Exterior Finish Project
Exterior Remodel
Modular Set And Exterior Finish Project
Exterior Remodel

+31

Response time12 hrs
14 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Best Quality Ceilings, LLC
Best Quality Ceilings, LLC
4.8(
24
)

Serving Fishers Island, NY and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Awesome job and quick. I will be using them again as soon as I land in my new home. Priced right, efficient and very pleasant to work with and kept in touch prior to starting."
Drop ceiling
Tree House stairs
Deli ceiling
Funeral home ceiling
Deli ceiling

+23

Response time1 day
Response rate91%
21 neighbors recently requested a quote
Avatar for Crisvalih Home Remodeling Inc
Crisvalih Home Remodeling Inc
5.0(
144
)

Serving Fishers Island, NY and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"We were absolutely delighted with the remodeling on our basement. Cris and his team were fabulous! They took our basement down to the studs and put up new walls, doors, drop ceiling and custom shelving in the closets, with pocket doors. Each day they came on time, put up plastic sheeting to limit dust to the rest of the house, and vacuuming at the end of each day. When all was up they did a great job painting. We will definitely be using them again!!"
Recommended by99%of homeowners
Avatar for Burke Construction Inc
Burke Construction Inc
5.0(
100
)

Serving Fishers Island, NY and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"Burke Construction Inc. is a very efficient and professional company. Liam and his crew are so reliable and extremely knowledgeable in all aspects of remodeling and construction. They remodeled my kitchen, three bathrooms and finished my basement along with several another jobs! I highly recommend this company!!"
Recommended by99%of homeowners
Avatar for Healthy Basement Systems
Healthy Basement Systems
4.5(
96
)

Serving Fishers Island, NY and surrounding areas

In business since 2004

Free estimates

Warranties offered

"This Company had come recommended to us and the Initial work seemed good ...but then we had two more instances of heavy rain and the basement had more water coming in....twice. It turned out that the Company had failed to accurately diagnose the source of the water coming in, and therefore had not recommended the correct design/layout of the system the first time. in fact, it was another contractor that finally identified the real source, so we then had to have additional costly work done by Healthy Basement to finally fix it, in addition to having to incur additional costs to have the basement refinished again...twice. During the 2nd time we had water (post the initial work), the Company was not responsive at all in helping to remediate the water damage and the Manager (Bill) was extremely unprofessional and inappropriate in how he talked to my wife (who was of course understandably upset about the water in the basement). That all said, we have not had any further water issues since the 2nd fix....but it was a very unpleasant and expensive experience and because of this, I would not be able to recommend this business to others."
Recommended by86%of homeowners
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FAQs for basement remodeling projects in Fishers Island, NY

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Fishers Island, NY homeowners’ guide to basement remodelings

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