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Find Basement remodelers in Brentwood

Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Basement - Remodel

Serving Brentwood, 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
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Additional Photos

+20

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

Serving Brentwood, 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
Additional Photos
Additional Photos
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Additional Photos

+26

Response time8 hrs
11 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Stars and Stripes Home Improvement LLC
Stars and Stripes Home Improvement LLC
4.8(
319
)
Basement - Remodel

Serving Brentwood, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"U.S. Home remodeling did extensive work on a total remodeling of our home. From the start to finish, they were always courteous, respectful and thorough. The quality of their workmanship was excellent throughout. I highly recommend them for all of your projects."
Remodeling - Kitchen & Bathroom Project
VEGA KITCHEN
Painting - Interior Project
Complete Renovation
Basement

+720

Response time4 days
10 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Loja Renovations Fine Carpentry LLC
Loja Renovations Fine Carpentry LLC
5.0(
23
)
Basement - Remodel

Serving Brentwood, NY and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"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!"
Bathroom
Bathroom
Bathroom
Bathroom
Bathroom

+5

Response time1 day
Response rate100%
Avatar for Lcqualityimprovements
Lcqualityimprovements
4.9(
9
)
Basement - Remodel

Serving Brentwood, NY and surrounding areas

Approved

In business since 2017

Free estimates

Offers commercial services

"Luis did an amazing job on my basement. We are very happy with the finished and we will always call him back for anything else. He is very professional and neat everyday after work he would organize and leave everything clean to start work the next day."
Bathroom remodel
Full Basment finish
1
Basment
Basment

+10

Response time20 mins
Recommended by100%of homeowners
Suffolk Peak
4.2(
30
)
Basement - Remodel

Serving Brentwood, NY and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"Ryan from R&D is an true and honest guy. He won't give you the runaround, he won't try to talk you into something you don't need, and he and his crew are just artists when it came to remodeling our bathroom. We chose the inventory and R&D made it happen. Complete tile work of our shower and floor came out beautiful. I'll admit, it was a tough bathroom to remodel because the ceiling wasn't dormered. So, it made it a bit harder to tile due to the angles. But they made it work. They, also, helped outsource companies that were right in our price range from doing work on the shower door and counter top for the vanities. I highly recommend R&D and I think you should consider them for your next project."
Response time3 days
5 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for All Precision Home Improvement, Inc.
All Precision Home Improvement, Inc.
4.9(
55
)
Basement - Remodel

Serving Brentwood, NY and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Anthony is exceptional. He is extremely professional and takes pride in his work. From the first day he was easy to communicate with and very reasonable when it came to working within our budget. He's got a great team and they work HARD. Very professional and did a beautiful job on our basement renovation."
Before repair
Before repair
Before repair
Before repair
Starting the repair

+328

Response time6 hrs
Recommended by90%of homeowners
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FAQs for basement remodeling projects in Brentwood, 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 Brentwood, NY homeowners’ guide to basement remodelings

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