Top-rated basement remodelers.

Get matched with top basement remodelers in Cornwall, CT

There are 5 highly-rated local basement remodelers.

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Select your specific project to find the pro for you.

Verified Reviews for Basement Remodel pros in Cornwall, CT

*The Angi rating for Basement Remodel companies in Cornwall, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Remodel needs.

*The HomeAdvisor rating for Basement Remodel companies in Cornwall, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Remodel needs.

Last update on December 10, 2025

Find Basement remodelers in Cornwall

Avatar for Sentri Homes

Sentri Homes

New on AngiNew on Angi
•Approved Pro

Sentri Homes

New on AngiNew on Angi
•Approved Pro
599 local quotes requested
2 years of experience

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Avatar for Connecticut Basement Systems, Inc.

Connecticut Basement Systems, Inc.

4.67(
141
)
•Approved Pro

Connecticut Basement Systems, Inc.

4.67(
141
)
•Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
75 local quotes requested

Connecticut Basement Systems is your trusted expert for basement waterproofing, crawl space repair, basement finishing, and foundation repair. Using patented, warrantied products, we provide permanent solutions for your home. Have a wet, flooded basement or crawl space? Tilted or bowing foundation walls? A basement you want to finish? We have a solution. We proudly serve homeowners and businesses all throughout Connecticut & Westchester County, NY. Call us today for a free inspection and no-obligation, estimate. Financing available. Additional phones - (203) 881-5090. Award winning.

"Chuck Stofko was very informative. Was patient in answering all my questions. Spent along time with me reviewing the process and the steps needed to waterproof my basment. I highly recommend him."

Justin F on August 2023

Connecticut Basement Systems is your trusted expert for basement waterproofing, crawl space repair, basement finishing, and foundation repair. Using patented, warrantied products, we provide permanent solutions for your home. Have a wet, flooded basement or crawl space? Tilted or bowing foundation walls? A basement you want to finish? We have a solution. We proudly serve homeowners and businesses all throughout Connecticut & Westchester County, NY. Call us today for a free inspection and no-obligation, estimate. Financing available. Additional phones - (203) 881-5090. Award winning.

"Chuck Stofko was very informative. Was patient in answering all my questions. Spent along time with me reviewing the process and the steps needed to waterproof my basment. I highly recommend him."

Justin F on August 2023

Avatar for Owens Corning Basement Finishing System

Owens Corning Basement Finishing System

4.75(
73
)
•Approved Pro

Owens Corning Basement Finishing System

4.75(
73
)
•Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
199 local quotes requested

Lux Renovations, LLC, has been serving New England homeowners since 2002. We've finished over 8000 basements in New England, usually in 2-3 weeks. Our dedication to customer experience and satisfaction has won us Owens Corning's top customer service ranking nationally for the last 8 years in a row. Something like that does not happen by accident. We are committed to insuring that all of our customers describe their experience with us as "the best contractor experience I ever had". If you are considering a basement finishing project please allow us to show you how Owens Corning has changed the industry with this unique system. A no-charge consultation and design is available. Give us a call today!

"Lux project manager and staff were great! Great attention to detail."

Brian C on December 2022

Lux Renovations, LLC, has been serving New England homeowners since 2002. We've finished over 8000 basements in New England, usually in 2-3 weeks. Our dedication to customer experience and satisfaction has won us Owens Corning's top customer service ranking nationally for the last 8 years in a row. Something like that does not happen by accident. We are committed to insuring that all of our customers describe their experience with us as "the best contractor experience I ever had". If you are considering a basement finishing project please allow us to show you how Owens Corning has changed the industry with this unique system. A no-charge consultation and design is available. Give us a call today!

"Lux project manager and staff were great! Great attention to detail."

Brian C on December 2022

Avatar for FS Sanchez Landscaping LLC

FS Sanchez Landscaping LLC

4.78(
9
)
•Approved Pro

FS Sanchez Landscaping LLC

4.78(
9
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
145 local quotes requested

We are a small, family owned operated full service landscaping company. Aside from all of your landscaping needs, we also specialize in, hardscaping, rock walls, paver and concrete patios, decks, new driveway construction and more! We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today! We carry a home improvement license and we are fully insured.

"Job done well, on time."

Frank R on March 2024

We are a small, family owned operated full service landscaping company. Aside from all of your landscaping needs, we also specialize in, hardscaping, rock walls, paver and concrete patios, decks, new driveway construction and more! We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today! We carry a home improvement license and we are fully insured.

"Job done well, on time."

Frank R on March 2024

Avatar for Connecticut Basement Systems, Inc.

Connecticut Basement Systems, Inc.

4.80(
35
)
•Approved Pro

Connecticut Basement Systems, Inc.

4.80(
35
)
•Approved Pro
Customers say: Quick response
127 local quotes requested
38 years of experience

Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.

"Overall, working with the company was a good experience."

Marcy W on October 2024

Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.

"Overall, working with the company was a good experience."

Marcy W on October 2024

Avatar for Plow and Property Projects, LLC

Plow and Property Projects, LLC

4.75(
68
)
•Approved Pro

Plow and Property Projects, LLC

4.75(
68
)
•Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
28 local quotes requested

We are a locally owned and operated company that values honesty, integrity, and treats your home as if it were our own. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction. Give us a call today to get your project started!

"Roof, siding, windows, gutters, doors, and door frames were all replaced. Quality of work is excellent, my house looks amazing. Attention was paid to every detail."

Nancy K on October 2024

We are a locally owned and operated company that values honesty, integrity, and treats your home as if it were our own. You will find us to be competitively priced, while still paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction. Give us a call today to get your project started!

"Roof, siding, windows, gutters, doors, and door frames were all replaced. Quality of work is excellent, my house looks amazing. Attention was paid to every detail."

Nancy K on October 2024

Avatar for Plow and Property Projects LLC

Plow and Property Projects LLC

5.00(
22
)
•Approved Pro

Plow and Property Projects LLC

5.00(
22
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
79 local quotes requested

Give us a call or click to request a quote today! Plow and Property Projects LLC is your go-to remodeling expert in Hartford. With our exceptional craftsmanship and attention to detail, we transform homes into stunning spaces. Contact us today for all your remodeling needs.

"Absolutely amazing. They were done in a week and turned my unfinished basement into a fully livable space!"

Katheryn C on July 2025

Give us a call or click to request a quote today! Plow and Property Projects LLC is your go-to remodeling expert in Hartford. With our exceptional craftsmanship and attention to detail, we transform homes into stunning spaces. Contact us today for all your remodeling needs.

"Absolutely amazing. They were done in a week and turned my unfinished basement into a fully livable space!"

Katheryn C on July 2025

Avatar for Dynamic Design & Remodeling

Dynamic Design & Remodeling

5.00(
14
)
•Approved Pro

Dynamic Design & Remodeling

5.00(
14
)
•Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

We offer free estimates for any size project : kitchens, bathrooms, exteriors, roofing, additions, decks, bedrooms, basements, or even an entire home. We also provide design work with multiple photo realistic renderings and 360° views along with full floorplans and elevations, so you can really envision your new space before you build it. We help to guide our clients through every stage of a renovation so that it comes in on time and on budget. Call us today at 203-644-9124.

"I highly recommend DDR. There are so many contractors out there and it is difficult to know what youâ ll get when you hire someone, from the quality of the work to the level of communication. This team did a great job from start to finish, and delivered a beautiful new space for my family. We selected DDR after getting multiple bids to update our walk-out basement into a more livable space. Key in this selection -- the price was competitive, and the team seemed attentive to the project needs as outlined. I had a tight budget and relatively aggressive timeline for this project. Admittedly the timeline was impacted by a few things that were out of DDRâ s control, including the Town building inspectorâ s schedule and a delivery delay (a new window arrived damaged and had to be reordered.) Nevertheless, the team stayed on budget and delivered a wonderful new basement. What a great project team -- led by Alex, the team (including John + Angel) truly transformed a dark dingy space into a bright fresh room. Alex was very thoughtful in suggesting options that would improve things and was exceptionally attentive to detail. He was super responsive to any texts or questions. In particular, I appreciated his high level of â perfectionismâ in how the finished product turned out. For phase 2, we need some custom cabinetry built for the space and I look forward to having the DDR team return to work on this next phase."

Alison F on November 2024

We offer free estimates for any size project : kitchens, bathrooms, exteriors, roofing, additions, decks, bedrooms, basements, or even an entire home. We also provide design work with multiple photo realistic renderings and 360° views along with full floorplans and elevations, so you can really envision your new space before you build it. We help to guide our clients through every stage of a renovation so that it comes in on time and on budget. Call us today at 203-644-9124.

"I highly recommend DDR. There are so many contractors out there and it is difficult to know what youâ ll get when you hire someone, from the quality of the work to the level of communication. This team did a great job from start to finish, and delivered a beautiful new space for my family. We selected DDR after getting multiple bids to update our walk-out basement into a more livable space. Key in this selection -- the price was competitive, and the team seemed attentive to the project needs as outlined. I had a tight budget and relatively aggressive timeline for this project. Admittedly the timeline was impacted by a few things that were out of DDRâ s control, including the Town building inspectorâ s schedule and a delivery delay (a new window arrived damaged and had to be reordered.) Nevertheless, the team stayed on budget and delivered a wonderful new basement. What a great project team -- led by Alex, the team (including John + Angel) truly transformed a dark dingy space into a bright fresh room. Alex was very thoughtful in suggesting options that would improve things and was exceptionally attentive to detail. He was super responsive to any texts or questions. In particular, I appreciated his high level of â perfectionismâ in how the finished product turned out. For phase 2, we need some custom cabinetry built for the space and I look forward to having the DDR team return to work on this next phase."

Alison F on November 2024

Avatar for Shapiro Construction

Shapiro Construction

4.64(
22
)
•Approved Pro

Shapiro Construction

4.64(
22
)
•Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
112 local quotes requested

Shapiro Construction is experienced and skilled in a variety of areas. Privately owned and operated, with over 10 years of experience. Our small crew is highly skilled, so we are able to keep costs efficient. We take pride in honest, timely communication. Some of our services include: Remodeling, framing, metal roofing, finish work, doors / windows, weatherproofing, insulation, decks / patios, painting, interior design, furniture fabrication

"Dan did an excellent job of repairing some log rot that was in a critical location of the structure He was thoughtful, creative and thorough. He also repaired the part of my deck that was partially responsible for the log damage. Ok pricing was very fair I will be contacting Dan for remodeling work in the future"

Charlie R on April 2025

Shapiro Construction is experienced and skilled in a variety of areas. Privately owned and operated, with over 10 years of experience. Our small crew is highly skilled, so we are able to keep costs efficient. We take pride in honest, timely communication. Some of our services include: Remodeling, framing, metal roofing, finish work, doors / windows, weatherproofing, insulation, decks / patios, painting, interior design, furniture fabrication

"Dan did an excellent job of repairing some log rot that was in a critical location of the structure He was thoughtful, creative and thorough. He also repaired the part of my deck that was partially responsible for the log damage. Ok pricing was very fair I will be contacting Dan for remodeling work in the future"

Charlie R on April 2025

Avatar for Prenga Remodeling, LLC

Prenga Remodeling, LLC

5.00(
2
)
•Approved Pro

Prenga Remodeling, LLC

5.00(
2
)
•Approved Pro
35 local quotes requested
7 years of experience

Family owned business with over 20 years experience - Remodeling Basements- Remodeling General- Remodeling Kitchen & Bathroom-

"Applied sun screen film to inside of large front storm window of my home. Good work. "

ALBERT M on November 2025

Family owned business with over 20 years experience - Remodeling Basements- Remodeling General- Remodeling Kitchen & Bathroom-

"Applied sun screen film to inside of large front storm window of my home. Good work. "

ALBERT M on November 2025

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Showing 1-10 of 117
Basement Remodel questions, answered by experts

The cost to remodel a basement is between $12,100 and $33,400 for the average homeowner. The price you pay can be as little as $3,500 or as much as $50,200, depending on the size and condition of your basement and the type of remodel you're doing. 

If you're doing a simple project like adding a home office to your basement, you can expect to pay anywhere from $500 to $3,000. However, if you're adding a bathroom, which is an extensive project, you can expect to pay between $6,600 to $16,500.

It is generally more affordable to finish a basement than an attic, though it ultimately depends on how you plan to use the space. The average cost to finish a basement ranges from $7 to $23 per square foot, while attic renovation costs $30 to $60 per square foot. However, a simple attic conversion to a storage space will cost significantly less.

When considering finishing your basement, take into account a few pros and cons:

Pros

  • Can increase the value of your home

  • Separate space from the rest of the house 

  • Customize and personalize the basement to suit your needs and style

  • Increase the amount of living space in your home

Cons

  • May not regain enough value to cover the cost of finishing

  • Lack of natural light if it’s below ground level

  • Moisture or flooding can cause costly damage

  • Installing plumbing and electrical can be messy and costly

Since DIYing a basement remodel isn't typically advised, there are some ways that you can still save money on this project without putting yourself in danger. Some ways to save money on a basement remodel include:

  • Painting walls yourself versus including in the cost of the remodel 

  • Installing light fixtures yourself

  • Choosing prefabricated fixtures, like cabinets, over custom ones

  • Choosing a budget-friendly flooring option, like laminate or vinyl flooring, and add rugs where necessary

Renovations that add functionality or more comfortable floor space generally add the most value when remodeling your home. Attic or basement finishing can add floor space without altering the home's structure, saving you renovation money while adding valuable space. Smaller improvements, such as installing smart-home components or replacing entry doors and windows, also experience high ROIs. 

The Cornwall, CT homeowners’ guide to basement remodels

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

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