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Find Basement remodelers in Sag Harbor

Avatar for Greg Home Improvement, Inc.
Greg Home Improvement, Inc.
4.7(
86
)
Basement - Remodel

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Hired Greg for a full gut and remodel of a bathroom. Greg was very competent, personable, and took the time to understand exactly what we wanted. He made us feel like we were in good hands. He took the time to make sure things were done the right way. The result was top notch, couldn't have asked for more. I would definitely use this company again!"
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS

+101

Recommended by96%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
30
)
Basement - Remodel

Serving Sag Harbor, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Jose and his team were the best team I have ever had work on a job in my house. Jose went WAY above and beyond to make sure we had our basement back in order in a timely fashion. He was willing to work after hours if needed to help get our finished basement back after we had suffered a sewage leak and had to wait until mitigation was complete. A 3-4 day job was complete in 2 days! And one of his workers, Carlos, from the second day stuck around to help me get the heavy and large items back into the basement. There was a previous review that said Jose was very emphatic to their needs and that is so true. That review actual was what made me give Jose a call. I wish there was a word better than highly recommend. Thank you Jose and your entire team!"
Additional Photos
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+26

Response time8 hrs
20 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Basement - Remodel

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

"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
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for BR Prime Remodeling
BR Prime Remodeling
5.0(
10
)
Basement - Remodel

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"I met Ricardo through my neighbor when she was remodeling her condo. I am so glad I did! Ricardo was very professional, clean and fast. He shared his timeline for the bathroom remodel and he kept to it I am so happy with the work I will be using him down the road for when I redo my kitchen. I would 100% recommend!!!!"
Shower
Floor detail
Bathroom 1
Bath Tub
Bathroom

+16

Response time6 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for AR Home Construction LLC
AR Home Construction LLC
5.0(
29
)
Basement - Remodel

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

A.R. Home Construction is a premier design and build construction company specializing in luxury new home construction and high-end remodeling projects. With expertise in all aspects of construction, from conceptual design to final touches, A.R. Home Construction delivers exquisite and luxurious transformations. Our team of skilled professionals is dedicated to exceeding client expectations and creating stunning spaces that reflect unparalleled craftsmanship. Explore luxury and sophistication at our home design showroom, offering a curated selection of top -quality products for your project.

My jobs
My jobs
My jobs
My jobs
My jobs

+73

11 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Loja Renovations Fine Carpentry LLC
Loja Renovations Fine Carpentry LLC
5.0(
27
)
Basement - Remodel

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"I highly recommend Loja Renovations & Fine Carpentry LLC! Manuel and Fabian were professional, courteous, and did an outstanding job. They helped me with several projects in my home, including mounting two TVs, installing a shoe rack, hanging a very heavy mirror, putting up window shades, and installing several shelves. Everything was done carefully and professionally, and they were extremely helpful throughout the entire process. What I especially appreciated was how prompt and reliable they were. They came all the way from Corona, Queens, and arrived ready to get everything done. Their attention to detail and quality of work really stood out. They offer a wide range of renovation and carpentry services, and based on my experience, I would absolutely hire them again for future projects. It’s not always easy to find people who are dependable, skilled, courteous, and take pride in their work, so I’m very glad I found Manuel and Fabian."
Bathroom
Bathroom
Bathroom
Bathroom
Bathroom

+5

Response time1 day
Response rate100%
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FAQs for basement remodeling projects in Sag Harbor, 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 Sag Harbor, NY homeowners’ guide to basement remodelings

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