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Find Basement remodelers in Sag Harbor

Avatar for Pristine East End Contracting
Pristine East End Contracting
4.8(
81
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Nick did an amazing job - we love the new Built-In cabinets and Fireplace surround. He helped us think through the design and than delivered against everything he said he would do. Compared to others we got quotes from, Nick's price was fair considering the amount of work that was performed. He used only highest quality materials, was very detailed in his proposal to ensure there were no misunderstanding's, and was meticulous to ensure the final product was of the best quality. Everything Nick did was custom for the space - my wife was scared of the size of TV I bought to mount above the fireplace, but Nick made it work - customized everything around it to ensure the TV fit in perfectly and didn't dominate the space. Nick did everything from re-routing wiring, HVAC, designing and building cabinets, sanding, painting, installing speakers, mantle, Stone tile around FP, TV, etc.... There was no nickel and diming - the price and the work we agreed to up front remained the same and Nick was true to his word which seems to be rare these days. We will definitely hire Nick again in the future for other home remodeling projects"
Project Photos
Recommended by95%of homeowners
Avatar for Greg Home Improvement, Inc.
Greg Home Improvement, Inc.
4.7(
86
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"They replaced my bathtub, installed a new vanity, put in new lights and painted a wall cabinet. Not only were they punctual, but very polite and reasonable. I highly recommend them and will use them in the future."
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 Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

"There are not many people in today’s world that really cares about how they are perceived . A true craftsmen is honorable and able to listen. Quality and precise precision make every job memorable . Arthur takes pride in everything he does. You could not find a better construction company , run with complete honesty and quality work. Doesn’t forget his patience and caring for what his customer wants. Hire this amazing company…you will not regret it. Your satisfaction gives him joy in his craftsmanship ?"
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+20

Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
28
)

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!"
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+26

Response time8 hrs
6 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for AR Home Construction LLC
AR Home Construction LLC
5.0(
29
)

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
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My jobs

+73

14 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for JA Carpentry Works LLC
JA Carpentry Works LLC
5.0(
33
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Very professional with excellent work ethic. I am elated with the work that was done for me. JA Carpentry will be back to complete more work for me. Thank you, Javier and team!"
Kit
Kit
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Kit
Kit

+18

Response time6 hrs
Response rate92%
3 neighbors recently requested a quote
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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.