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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon35
    Verified basement remodels reviews

Top-Rated Basement remodelers in Katonah - Updated Nov 2026

Avatar for VAP Contracting LLC
VAP Contracting LLC
4.9(
127
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"My wife and I were looking for a contractor to remodel our master bathroom. We were looking for someone that was knowledgeable, honest, fair in pricing, and great with communication. Victor from VAP Contracting was exactly that. Victor told us exactly when he would start, what he would need, and always answered any questions that we had. His team arrived every morning on time and was very polite. They were very neat and cleaned up each day and truly did an amazing job! Our new bathroom looks great. Victor stands behind his work and we look forward to working with them again on other projects that we have."
Kitchen Renovation
Kitchen Renovation
Kitchen Renovation
Kitchen Renovation
Kitchen Renovation

+9

Response time3 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"CT basement did a phenomenal job finishing our basement and we could not be happier with the results. They made every step of the process from design to the finished project simple and straightforward, everybody was easy to work with and made our opinions and needs the top priority and they were able to perfectly translate our vision into the final product. This was a fairly large project involving finishing 1200sq ft with an office, gym and full bathroom and their experience and expertise was obvious. They definitely understand the specific needs of a basement while making it look like any other room in the house. We would use them again in a second, we’ve even been joking about tearing down the rest of the house and just living in the basement!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

166 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Above & Beyond Contracting
Above & Beyond Contracting
4.8(
81
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"Bud and his team are FANTASTIC. They finished on schedule, reasonably priced, very professional, provided guidance and did a beautiful job!! We plan on using Bud for the remodeling of our bathrooms and the basement."
Vanity and tub
Stand Up Shower
Shower fixtures
Kitchens
Additional Photos

+16

Response rate100%
6 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Hire Her Home Improvement Inc.
Hire Her Home Improvement Inc.
4.7(
332
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"Angela gave me a fair estimate for my bathroom remodel, not over inflated like most contractors. The workers were courteous, professional, knowledgeable, detail oriented, and kept the work area super clean the entire week they worked on my bathroom. I am very happy and satisfied with the final product. I would absolutely contract Hire Her Home Improvement again!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Response time7 hrs
9 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Modo Renovations, LLC
Modo Renovations, LLC
5.0(
35
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Offers commercial services

"Spencer and Modo Renovations just finished a major renovation on our basement (adding a kitchen, bedroom, and bathroom), and the final result completely exceeded our expectations. Spencer is an absolute pleasure to work with. He is incredibly responsive, professional, and transparent about every detail of the process. His crew did an excellent job with attention to detail in the craftsmanship is evident everywhere you look, and they handled all the permitting and infrastructure smoothly. Spencer kept everything on track and made a massive home project feel entirely stress-free."
fireplace built in
kitchen
kitchen
Upper west side reno
Bathroom

+257

Response time4 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for Economy Handy Carpenter, LLC
Economy Handy Carpenter, LLC
4.6(
332
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"Nixon and his crew did an outstanding job gutting and rebuilding a very challenging bathroom in our house, which was built in the 1930s. We are very happy with the craftsmanship and the price, and it was a pleasure to work with them on this project from start to finish. I highly recommend this excellent contractor."
Response time10 hrs
77 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Guardian Remodeling Corp.
Guardian Remodeling Corp.
5.0(
9
)
Basement - Remodel

Serving Katonah, NY and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"We had Guardian Remodeling redo our basement in Carmel. Tim was our main point of contact and was great throughout the job. Whenever something came up, he was quick to respond and figure it out. The basement looks completely different now and we’re really happy with the work. Good guys and easy to deal with."
After
After
Before
Work
Work

+14

Response time5 hrs
Response rate100%
2 neighbors recently requested a quote
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Basement Remodel FAQs, answered by experts

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.

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.

Framing a basement takes three to five days, on average, when completed by a professional, though it may take longer for a larger space. Keep in mind this doesn’t include the time to complete the design, obtain permits, and install the drywall on the framing. On average, fully finishing a basement takes an average of 45 days.

Adding a bathroom to your basement can increase your home value since homes with multiple bathrooms sell for more. The return on investment (ROI) for a basement bathroom is 50% to 75%. The actual return varies with your home and location. Adding a half bath to your home increases the value by 2.9% while finishing a basement increases the home value by 6.6%.

There are several small, inexpensive upgrades you can make to upgrade your basement. Although you still need to adhere to building codes and obtain permits when necessary, you can complete small but mighty tasks like painting the masonry walls and installing entertainment devices to make the space more usable. 

The Katonah, NY homeowners’ guide to basement remodels

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