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Find Basement remodelers in Fishers Island

Avatar for Refined Renovators & Design
Refined Renovators & Design
5.0(
8
)

Serving Fishers Island, NY and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"The work came out great on my bathroom remodel. The crew worked very neatly cleaned up every day. Very nice people. I would use them again."
comfortable spaces
sunroom
Beautiful Bathroom
Primary Bedroom
Tile shower

+5

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

Serving Fishers Island, NY and surrounding areas

Angi Approved

In business since 1986

Free estimates

Customers say: Quick response

"Artie & Mike are simply the best. I used them to: 1) Build a LARGE extension to my house and redo my entire kitchen and dining room. The job was completed on time and on budget. Throughout the process Artie was transparent & professional. EVERY person who has stepped into my house has complimented at the detailed perfection. 3) Artie built us a custom walk in pantry 2) Built 2 large decks in the backyard as well as an outdoor shower. This project was completed on time, on budget while exceeding all expectations. If you are looking for a contractor and crew that is responsible, responsive, polite, creative and delivers the HIGHEST LEVEL of quality - Artie is the one."
Additional Photos
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+20

Response time2 days
3 neighbors recently requested a quote
Recommended by100%of homeowners
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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

"I had my master bathroom upgraded. Christian and his crew are top notch. From the drop cloths all the way up from the front door to the bathroom, to clean-off every day. It’s rare to not have to clean up every day after contractors leave for the day. Quality work across the board. I was very happy with the end result."
Recommended by99%of homeowners
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Avatar for Universal Roofing & Chimney of LI Inc
Universal Roofing & Chimney of LI Inc
5.0(
78
)

Serving Fishers Island, NY and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"Beyond thrilled with how the entire project went. Universal Roofing & Chimney gave me a good price on a whole new roof plus we did new gutters as well. The cost was well worth it knowing the warranty we have now and to know it was done right. The crew worked well and cleaned everything up when they were done."
Recommended by97%of homeowners
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Avatar for Talex home improvement, inc.
Talex home improvement, inc.
5.0(
57
)

Serving Fishers Island, NY and surrounding areas

In business since 2003

Free estimates

Warranties offered

"I am extremely happy with the way the deck looks now. Not only was the work completed in a timely manner, but the quality of the workmanship and the attention to detail was amazing. Also, the care taken to remove the pieces of the old deck were really appreciated. In addition, it was a pleasure to work with Chuck from Talex."
Recommended by100%of homeowners
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Showing 1-10 of 1605
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.

See all articles