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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon48
    Verified basement remodels reviews

Top-Rated Basement remodelers in Speonk - Updated Nov 2026

Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
4.6(
272
)
Basement - Remodel

Serving Speonk, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"I cannot say enough about these guys. Their prices were reasonable and about average compared to other companies. The owner, Dave was great to work with, he kept us updated on a daily basis, and was there every morning to look things over and help get the guys set up. The workers were there at 7 am every day. Work was done well within the given timeframe. Everything was left clean each day. They built a bedroom in our basement, and gutted and remodeled a bathroom, we couldn’t be happier with both projects. Very professional, highly recommend."
Additional Photos
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+23

Response time1 day
Response rate100%
10 neighbors recently requested a quote
Avatar for East End Designs, LLC
East End Designs, LLC
4.8(
68
)
Basement - Remodel

Serving Speonk, NY and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Shawn and the crew tended to our every need with precision and detail. A superb job! We had basement repairs, LR/DR repairs and a full kitchen remodel. We were nervous about the kitchen but Shawn, Manny the PM, Carlos the electrician, Ray the cabinet master, & the rest of the crew were extremely accommodating and paid attention to every detail. The kitchen came out amazing along with the rest of the house. Some contractors cut corners , we’ve experienced it, but East End really does quality work. 5 stars for sure. Thank you guys!"
Bathroom remodel
Custom vanity and top
Custom vanity
Free standing tub
Shadow boxes

+2

Response time2 days
6 neighbors recently requested a quote
Recommended by61%of homeowners
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Basement - Remodel

Serving Speonk, 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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+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
30
)
Basement - Remodel

Serving Speonk, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Jose Is a fantastic choice for a remodeling job. He fully remodeled my kitchen and first floor including moving walls and installing new hardwood floors. Not only are his carpentry skills exceptional but he also has an eye for detail. He is meticulous and finished each project to my high standards. Jose is a great choice as he has the skills and knowledge to fully complete any job from demo to finishing and painting."
Additional Photos
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Additional Photos

+26

Response time8 hrs
22 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Loja Renovations Fine Carpentry LLC
Loja Renovations Fine Carpentry LLC
5.0(
27
)
Basement - Remodel

Serving Speonk, NY and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"I hired Loja Renovations to assembly a number of furniture I bought online that was very difficult to put together. They came and quickly assembled them with ease. They're very skilled and efficient. Apart from the reasonable cost, I was particularly impressed with their professionalism, their show of care for the customer and their respectful attitude. I definitely plan to use them again."
Bathroom
Bathroom
Bathroom
Bathroom
Bathroom

+5

Response time1 day
Response rate100%
Avatar for JA Carpentry Works LLC
JA Carpentry Works LLC
5.0(
33
)
Basement - Remodel

Serving Speonk, NY and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Javier painted my 25x10 deck and ceiling above it. He was prompt onetime and did a good job. There was a mix up in the color of the paint which was not his fault. I paid in full for the work. He offered to stop back and give the deck another coat with the right color. He has not returned yet but hope he does. Nice man and good work."
Kit
Kit
Kit
Kit
Kit

+18

Response time6 hrs
Response rate92%
3 neighbors recently requested a quote
Avatar for A.S.M. Home Improvements
A.S.M. Home Improvements
5.0(
12
)
Basement - Remodel

Serving Speonk, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Anthony did an excellent job completing my garage upgrade within budget. He was highly professional and knowledgeable, and the quality of his work exceeded my expectations. I would definitely recommend him to anyone looking for masonry or home improvement projects."
Remodeling
Remodeling
Remodeling
Remodeling
2 of 2
fire pit

+48

Response time11 hrs
11 neighbors recently requested a quote
Recommended by58%of homeowners
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Basement Remodel FAQs, answered by experts

Lifting a house and adding a basement is one way to add usable square footage. Lifting or jacking a house is a complex process, and it can be expensive, not to mention that you won’t be able to live in your house while it’s lifted, due to safety concerns. Lifting a house should only be done by experienced professionals.

The difficulty of adding a basement to an existing house can vary depending on the house’s location, the size of the basement, and the type and condition of the existing foundation. Adding a basement is a job best handled by the pros, so you’ll need to enlist professional help for this project.

To determine if your basement walls are suitable for finishing, assess their structural integrity and moisture conditions. Look for any signs of damage, such as cracks, bowing, or excessive moisture. Ensure proper drainage and address any underlying issues before proceeding. 

Consult with a professional if you're uncertain about the structural stability or potential risks associated with finishing your basement walls.

Building up by adding square footage to the top of your home is often less expensive than adding a basement, but it depends on the specifics of your house, your property, and supply costs. Because building a basement requires excavation, it can be a more expensive option than building up.

Any bowing in a basement wall indicates a problem that needs to be addressed by a professional. If your basement wall bows more than 1 inch, it's time for an inspection. Generally, a wall can bow up to 30% of its thickness (around 2.5 inches for an 8-inch-thick wall) before it becomes an urgent situation. Bowing of 2 to 4 inches is more straightforward to fix than bowing of more than 4 inches, which will require significant repairs. If the bowing is more than 6 inches, the wall will likely need to be replaced. The sooner you address the problem, the easier and less expensive the repair will be.

The Speonk, NY homeowners’ guide to basement remodels

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