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Find Basement remodelers in Fishers Island

"We went over everything that was going to be done step by step both A.J. and Sam explained and guided us in the process. All came in at budget and in a timely manner. They were clean and reliable. I Will use them for my next project! ps. All of their recommendations for plumbing, electrical and painting were fantastic."

VINCENT S on March 2025

Owner owned & operated. Full service remodeling company specializing in medium to large projects. Serving Suffolk county and the Hamptons. High end building and remodeling firm. Expect excellent quality and customer service. Permit and Variance Specialists.

"We went over everything that was going to be done step by step both A.J. and Sam explained and guided us in the process. All came in at budget and in a timely manner. They were clean and reliable. I Will use them for my next project! ps. All of their recommendations for plumbing, electrical and painting were fantastic."

VINCENT S on March 2025


Avatar for Cocos Custom Building LLC

Cocos Custom Building LLC

4.75(
8
)
โ€ขApproved Pro

Cocos Custom Building LLC

4.75(
8
)
โ€ขApproved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Cocoโ€™s Custom Building LLC specializes in setting and finishing Modular Homes, fabricating and installing structural steel, and all phases of residential and commercial construction. This includes extensions, dormers, basements, siding, exterior trim and roofing. We have 25 years of experience. We take pride in giving our customers a professional quality finish on all of our projects for a reasonable price. We work extremely hard to ensure that our customers hard earned money doesnโ€™t go to waste.

"Excellent. On time and on budget"

Brian D on January 2025

Cocoโ€™s Custom Building LLC specializes in setting and finishing Modular Homes, fabricating and installing structural steel, and all phases of residential and commercial construction. This includes extensions, dormers, basements, siding, exterior trim and roofing. We have 25 years of experience. We take pride in giving our customers a professional quality finish on all of our projects for a reasonable price. We work extremely hard to ensure that our customers hard earned money doesnโ€™t go to waste.

"Excellent. On time and on budget"

Brian D on January 2025


Avatar for Connecticut Basement Systems, Inc.

Connecticut Basement Systems, Inc.

4.80(
35
)
โ€ขApproved Pro

Connecticut Basement Systems, Inc.

4.80(
35
)
โ€ขApproved Pro
Customers say: Quick response
88 local quotes requested
39 years of experience

Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.

"Overall, working with the company was a good experience."

Marcy W on October 2024

Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.

"Overall, working with the company was a good experience."

Marcy W on October 2024


Avatar for DiGiorgi Roofing & Siding Inc

DiGiorgi Roofing & Siding Inc

4.74(
175
)
โ€ขApproved Pro

DiGiorgi Roofing & Siding Inc

4.74(
175
)
โ€ขApproved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
17 local quotes requested

๐Ž๐ฏ๐ž๐ซ ๐Ÿ—๐Ÿ ๐˜๐ž๐š๐ซ๐ฌ ๐ข๐ง ๐๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ! DiGiorgi Roofing & Siding, Inc. is a family-owned and operated company proudly serving Connecticut since 1933โ€”now extending into parts of Massachusetts, New York, and Rhode Island. Weโ€™re more than just roofing and siding. Our expert services include windows, doors, gutters, decks, fencing, awnings, skylights, and remodeling. We use top-quality products from ๐†๐€๐…, ๐‚๐ž๐ซ๐ญ๐š๐ข๐ง๐“๐ž๐ž๐, ๐ˆ๐ง๐Ÿ๐ข๐ง๐ข๐ญ๐ฒยฎ ๐›๐ฒ ๐Œ๐š๐ซ๐ฏ๐ข๐งยฎ, ๐€๐ฆ๐š๐ซ๐ซ, ๐๐ซ๐จ๐•๐ข๐š, ๐‘๐š๐ข๐ง๐“๐ž๐œ๐ก, ๐“๐ซ๐ž๐ฑยฎ, ๐’๐ฎ๐ฆ๐ฆ๐ž๐ซ๐’๐ฉ๐š๐œ๐žยฎ, and ๐•๐ž๐ฅ๐ฎ๐ฑ โ€”ensuring lasting beauty and performance. ๐’๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌ ๐Ÿ“Œ Roofing ๐Ÿ“Œ Solar Roofing ๐Ÿ“Œ Siding ๐Ÿ“Œ Replacement Windows & Doors ๐Ÿ“Œ Garage Doors ๐Ÿ“Œ RainTech Gutter Systems ๐Ÿ“Œ Decks & Fences ๐Ÿ“Œ Awnings & Skylights ๐Ÿ“Œ Remodeling ๐Ÿ“Œ Epoxy Garage flooring

"My roof is leaking in every room. Digiorgi did the roofing. Called them one month ago to tarp roof, they refuses, claims it would leak more if the nailed tarp. Extremely poor work. Roof leaked within 1 year of installation."

Gwen d on July 2023

๐Ž๐ฏ๐ž๐ซ ๐Ÿ—๐Ÿ ๐˜๐ž๐š๐ซ๐ฌ ๐ข๐ง ๐๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ! DiGiorgi Roofing & Siding, Inc. is a family-owned and operated company proudly serving Connecticut since 1933โ€”now extending into parts of Massachusetts, New York, and Rhode Island. Weโ€™re more than just roofing and siding. Our expert services include windows, doors, gutters, decks, fencing, awnings, skylights, and remodeling. We use top-quality products from ๐†๐€๐…, ๐‚๐ž๐ซ๐ญ๐š๐ข๐ง๐“๐ž๐ž๐, ๐ˆ๐ง๐Ÿ๐ข๐ง๐ข๐ญ๐ฒยฎ ๐›๐ฒ ๐Œ๐š๐ซ๐ฏ๐ข๐งยฎ, ๐€๐ฆ๐š๐ซ๐ซ, ๐๐ซ๐จ๐•๐ข๐š, ๐‘๐š๐ข๐ง๐“๐ž๐œ๐ก, ๐“๐ซ๐ž๐ฑยฎ, ๐’๐ฎ๐ฆ๐ฆ๐ž๐ซ๐’๐ฉ๐š๐œ๐žยฎ, and ๐•๐ž๐ฅ๐ฎ๐ฑ โ€”ensuring lasting beauty and performance. ๐’๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌ ๐Ÿ“Œ Roofing ๐Ÿ“Œ Solar Roofing ๐Ÿ“Œ Siding ๐Ÿ“Œ Replacement Windows & Doors ๐Ÿ“Œ Garage Doors ๐Ÿ“Œ RainTech Gutter Systems ๐Ÿ“Œ Decks & Fences ๐Ÿ“Œ Awnings & Skylights ๐Ÿ“Œ Remodeling ๐Ÿ“Œ Epoxy Garage flooring

"My roof is leaking in every room. Digiorgi did the roofing. Called them one month ago to tarp roof, they refuses, claims it would leak more if the nailed tarp. Extremely poor work. Roof leaked within 1 year of installation."

Gwen d on July 2023


Avatar for Golden Access Group Inc

Golden Access Group Inc

5.00(
4
)
โ€ขApproved Pro

Golden Access Group Inc

5.00(
4
)
โ€ขApproved Pro
1 years of experience
Free onsite estimate

Weย’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Great personality, communication and easy to work with "

alex sayed s on December 2025

Weย’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Great personality, communication and easy to work with "

alex sayed s on December 2025


Avatar for Refined Renovators & Design

Refined Renovators & Design

5.00(
8
)
โ€ขApproved Pro

Refined Renovators & Design

5.00(
8
)
โ€ขApproved Pro
Super Service Award
1 years of experience
Free onsite estimate

At Refined Renovators & Design, we specialize in transforming spaces with our design expertise for kitchens, bathrooms, and all aspects of residential construction. Our team is highly skilled and experienced in using design programs such as 2020 Design and AutoCAD to bring your vision to life. License #HI-71919

"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."

Tom K on November 2025

At Refined Renovators & Design, we specialize in transforming spaces with our design expertise for kitchens, bathrooms, and all aspects of residential construction. Our team is highly skilled and experienced in using design programs such as 2020 Design and AutoCAD to bring your vision to life. License #HI-71919

"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."

Tom K on November 2025


Avatar for Arthur DeRosa Building and Remodeling

Arthur DeRosa Building and Remodeling

5.00(
12
)
โ€ขApproved Pro

Arthur DeRosa Building and Remodeling

5.00(
12
)
โ€ขApproved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
40 years of experience

We are a building, remodeling, home improvement firm backed with 31 yrs experience. I, Arthur DeRosa, personally over see every project, big or small, from start to finish. I have an artists soul and every project that I am privileged to do is a reflection of that. With performance backed by experience and attention to detail, your project will be in good hands. The number of employees varies depending on work load. Sub-contractors are used when necessary. Proposals and estimates are free and include payment schedules with start and completion dates. Super Service Award winner for 2016! Call us today to schedule your appointment - (631) 774-1231

"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."

Constantine M on March 2023

We are a building, remodeling, home improvement firm backed with 31 yrs experience. I, Arthur DeRosa, personally over see every project, big or small, from start to finish. I have an artists soul and every project that I am privileged to do is a reflection of that. With performance backed by experience and attention to detail, your project will be in good hands. The number of employees varies depending on work load. Sub-contractors are used when necessary. Proposals and estimates are free and include payment schedules with start and completion dates. Super Service Award winner for 2016! Call us today to schedule your appointment - (631) 774-1231

"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."

Constantine M on March 2023


Avatar for Loja Renovations Fine Carpentry LLC

Loja Renovations Fine Carpentry LLC

4.92(
13
)
โ€ขApproved Pro

Loja Renovations Fine Carpentry LLC

4.92(
13
)
โ€ขApproved Pro
2 years of experience
Free onsite estimate

With over 22 years experience providing quality home improvement and repair services, backed by satisfaction our competitors can't match, isn't it time to give us a call? Whether you have small or large projects for the interior or exterior, we offer the quality you expect and the customer care you desire to make your home repair and improvement project dreams a reality today.

"I am extremely satisfied with the service.Manuel is very responsible, punctual, and professional worker. The assembly of the closet was perfect and done with great care. I would like more people to have the opportunity to hire this great worker. I highly recommend him!"

Maryleissy V on January 2026

With over 22 years experience providing quality home improvement and repair services, backed by satisfaction our competitors can't match, isn't it time to give us a call? Whether you have small or large projects for the interior or exterior, we offer the quality you expect and the customer care you desire to make your home repair and improvement project dreams a reality today.

"I am extremely satisfied with the service.Manuel is very responsible, punctual, and professional worker. The assembly of the closet was perfect and done with great care. I would like more people to have the opportunity to hire this great worker. I highly recommend him!"

Maryleissy V on January 2026


Nastasi William Builders Inc

No reviews yet

Nastasi William Builders Inc

No reviews yet
Free onsite estimate

For over 30 years, William Nastasi Builders, Inc. has provided home and commercial property owners with outstanding construction and general contracting throughout central New Jersey. The company's experience and quality has been rewarded with winning numerous building awards for a variety of projects. Focusing on renovations, custom homes and other new construction projects, William Nastasi Builders, Inc. offers a variety of services, including general contracting and project management. Being detail oriented and hands on is the foundation of the project oversight you will receive. We pride ourselves in completing every project on time, on budget and with no checklists. By combining experience, cost effective ideas, quality materials and workmanship you will be as satisfied with your project as were the numerous past custom home owners and clients. William Nastasi Builders, Inc. handles everything from beginning to end on your New Jersey remodeling project. Our team of remodeling pros will get your job finished to your satisfaction. We proudly serve Clinton Township, Lebanon Township, Deleware Township, Far Hills, and Flemington Licenses / Credentials - โ€ข Registered Builder - State of New Jersey โ€ข Home Improvement License - State of New Jersey โ€ข Home Improvement License - State of Pennsylvania Call us today!

For over 30 years, William Nastasi Builders, Inc. has provided home and commercial property owners with outstanding construction and general contracting throughout central New Jersey. The company's experience and quality has been rewarded with winning numerous building awards for a variety of projects. Focusing on renovations, custom homes and other new construction projects, William Nastasi Builders, Inc. offers a variety of services, including general contracting and project management. Being detail oriented and hands on is the foundation of the project oversight you will receive. We pride ourselves in completing every project on time, on budget and with no checklists. By combining experience, cost effective ideas, quality materials and workmanship you will be as satisfied with your project as were the numerous past custom home owners and clients. William Nastasi Builders, Inc. handles everything from beginning to end on your New Jersey remodeling project. Our team of remodeling pros will get your job finished to your satisfaction. We proudly serve Clinton Township, Lebanon Township, Deleware Township, Far Hills, and Flemington Licenses / Credentials - โ€ข Registered Builder - State of New Jersey โ€ข Home Improvement License - State of New Jersey โ€ข Home Improvement License - State of Pennsylvania Call us today!


Integrity Custom Carpentry and Remodeling

No reviews yet

Integrity Custom Carpentry and Remodeling

No reviews yet
20 years of experience

Finish Carpentry and Custom Woodworking, we have 5 finish carpenters, we seldom use subcontractors, Suffolk County Home Improvement license #46665-h, Fully insured with 2,000,000 General Liability policy and Workers Compensation insurance, we offer free estimates, Discounts offered for Angies list customers. We are clean cut, reliable, honest finish carpenters who can be trusted to take your vision for your home and make it a reality, or we can design it for you. All work is fully gauranteed!

Finish Carpentry and Custom Woodworking, we have 5 finish carpenters, we seldom use subcontractors, Suffolk County Home Improvement license #46665-h, Fully insured with 2,000,000 General Liability policy and Workers Compensation insurance, we offer free estimates, Discounts offered for Angies list customers. We are clean cut, reliable, honest finish carpenters who can be trusted to take your vision for your home and make it a reality, or we can design it for you. All work is fully gauranteed!

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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 countryโ€”especially lots on swamps, high water tables, or other wetlandsโ€”local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle.ย 

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.ย 

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

Whether a finished basement counts toward your homeโ€™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.ย 

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, youโ€™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 todayโ€™s code.

The Fishers Island, NY homeownersโ€™ guide to basement remodelings

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