Top-rated basement remodelers.

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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon27
    Verified basement remodels reviews

Find Basement remodelers in Sun Prairie

Avatar for Matrix Basement Finishing

Matrix Basement Finishing

3050 N Kennicott Ave
4.54(
275
)
Approved Pro

Matrix Basement Finishing

3050 N Kennicott Ave
4.54(
275
)
Approved Pro
Customers say: Quality work
132 local quotes requested
16 years of experience

We are a locally owned and operated basement finishing specialist servicing the Chicagoland area. Our focus is providing clients with a clear, upfront vision of expectations through a design/build approach. Our free design service provides potential customers with a collaborative consultation geared towards budget, wants, needs and lifestyle.

"The basement looks amazing, the crew did an excellent job. They were efficient, kept to their schedules, and did great work."

Matthew R on October 2025

We are a locally owned and operated basement finishing specialist servicing the Chicagoland area. Our focus is providing clients with a clear, upfront vision of expectations through a design/build approach. Our free design service provides potential customers with a collaborative consultation geared towards budget, wants, needs and lifestyle.

"The basement looks amazing, the crew did an excellent job. They were efficient, kept to their schedules, and did great work."

Matthew R on October 2025


Avatar for Mad City Windows & Baths

Mad City Windows & Baths

5020 Voges Rd
4.78(
2,991
)
Approved Pro

Mad City Windows & Baths

5020 Voges Rd
4.78(
2,991
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
280 local quotes requested

We are the premier home improvement company in Madison, Green Bay, Milwaukee & throughout Wisconsin with years of experience and countless home improvement projects to prove it. We’re locally owned and operated so we know what works best in this climate and we choose quality products designed with Wisconsin area homeowners in mind. Whether you need replacement windows, vinyl siding, bathrooms, or metal roofing our professional installers will leave your home looking great.

"Very good very fast only one day of work super nice."

Erika H on October 2025

We are the premier home improvement company in Madison, Green Bay, Milwaukee & throughout Wisconsin with years of experience and countless home improvement projects to prove it. We’re locally owned and operated so we know what works best in this climate and we choose quality products designed with Wisconsin area homeowners in mind. Whether you need replacement windows, vinyl siding, bathrooms, or metal roofing our professional installers will leave your home looking great.

"Very good very fast only one day of work super nice."

Erika H on October 2025


Avatar for Interiors by JW

Interiors by JW

603 West Main Street
New on AngiNew on Angi
Approved Pro

Interiors by JW

603 West Main Street
New on AngiNew on Angi
Approved Pro
48 local quotes requested
27 years of experience

At JW, we’ve been providing our customers with quality craftsmanship and innovative solutions since 1998. We’ve built our reputation on a solid foundation of integrity and trust, the cornerstones of our company’s values. Choosing to work with JW means you’re in good hands. We provide a 2-year warranty on all of our work, and you’ll receive manufacturer warranties on all the products we install. Our detailed estimating software ensures that you receive a fair quote that is accurate the first time and won’t escalate during the course of your project. We strictly adhere to all city and state requirements for licensing and insurance regulations, ensuring that we are compliant at all times. JW provides a full range of remodeling services including a full-time interior design team, to make your remodeling process as seamless as possible.

At JW, we’ve been providing our customers with quality craftsmanship and innovative solutions since 1998. We’ve built our reputation on a solid foundation of integrity and trust, the cornerstones of our company’s values. Choosing to work with JW means you’re in good hands. We provide a 2-year warranty on all of our work, and you’ll receive manufacturer warranties on all the products we install. Our detailed estimating software ensures that you receive a fair quote that is accurate the first time and won’t escalate during the course of your project. We strictly adhere to all city and state requirements for licensing and insurance regulations, ensuring that we are compliant at all times. JW provides a full range of remodeling services including a full-time interior design team, to make your remodeling process as seamless as possible.


Avatar for Steele Home Remodeling LLC

Steele Home Remodeling LLC

4873 Felland Road
4.67(
33
)
Approved Pro

Steele Home Remodeling LLC

4873 Felland Road
4.67(
33
)
Approved Pro
Customers say: Super punctual
36 local quotes requested
14 years of experience

Steele Home Remodeling LLC is a Family owned and operated company that focuses on Kitchen, Bathroom, Basement Remodeling and Home Repairs. Steele Home Remodeling LLC provides quality workmanship and customer service with over 25 years of experience. Based in Madison, WI. Working with trusted, skilled tradesman and vendors our company provides top notch Remodeling and Repair service. We specialize in getting clients through projects both large and small. Steele Home Remodeling LLC is a full-service contracting company that can handle all of your properties needs. We bring integrity, reliability and expertise to every project, substantiated by the testimonials of our many satisfied customers. Whether its a large or small project, we will work with you every step of the way to ensure that your it is completed to your satisfaction with the highest quality, efficiency and within your budget.

"We really appreciated working with Steele Home Remodeling. His bid was comprehensive and detailed. He provided unique design ideas for our space and helped us get the most out of our basement. Phill and his team provide quality work with an eye for small details that make the project and space come to life. I have already recommended him to family and friends looking for basement remodels."

Brett M on February 2025

Steele Home Remodeling LLC is a Family owned and operated company that focuses on Kitchen, Bathroom, Basement Remodeling and Home Repairs. Steele Home Remodeling LLC provides quality workmanship and customer service with over 25 years of experience. Based in Madison, WI. Working with trusted, skilled tradesman and vendors our company provides top notch Remodeling and Repair service. We specialize in getting clients through projects both large and small. Steele Home Remodeling LLC is a full-service contracting company that can handle all of your properties needs. We bring integrity, reliability and expertise to every project, substantiated by the testimonials of our many satisfied customers. Whether its a large or small project, we will work with you every step of the way to ensure that your it is completed to your satisfaction with the highest quality, efficiency and within your budget.

"We really appreciated working with Steele Home Remodeling. His bid was comprehensive and detailed. He provided unique design ideas for our space and helped us get the most out of our basement. Phill and his team provide quality work with an eye for small details that make the project and space come to life. I have already recommended him to family and friends looking for basement remodels."

Brett M on February 2025


Avatar for Catalyst Custom Construction

Catalyst Custom Construction

1580 Liatris Dr.
4.50(
8
)
Approved Pro

Catalyst Custom Construction

1580 Liatris Dr.
4.50(
8
)
Approved Pro
Customers say: Quality work
36 local quotes requested
10 years of experience

Established in 2015, Catalyst Custom Construction is the local leader in home construction, home additions, kitchen remodels, bathroom remodels, and basement finishing. We spec in homes that you can live in forever. We build new executive homes for you and your whole family with your families touches. We know Madison homes and understand when you want to keep the character in your old home with new flair. We are a building contractor that is ready to make your vision into a reality. We pride ourselves on the quality, integrity and craftsmanship that goes into every job. Give us a call or send us an email to set up a consultation about your next project!

"When Mike came out to give me a quote, he told and told me he would get back to me in a week and could probably finish part of the work in the next two weeks and start the full remodel within a month. That was in January, and I'm writing this review at the end of March. I called him several times and finally caught up with him about a month ago, when he said he had had some family issues and would get back to me soon. But he never did. I spent time cleaning my house, speaking with him, writing him an email with all the details of my project, calling references, and waiting months for an answer. The very least he could have done was said he wasn't interested in the project."

Kate V on March 2021

Established in 2015, Catalyst Custom Construction is the local leader in home construction, home additions, kitchen remodels, bathroom remodels, and basement finishing. We spec in homes that you can live in forever. We build new executive homes for you and your whole family with your families touches. We know Madison homes and understand when you want to keep the character in your old home with new flair. We are a building contractor that is ready to make your vision into a reality. We pride ourselves on the quality, integrity and craftsmanship that goes into every job. Give us a call or send us an email to set up a consultation about your next project!

"When Mike came out to give me a quote, he told and told me he would get back to me in a week and could probably finish part of the work in the next two weeks and start the full remodel within a month. That was in January, and I'm writing this review at the end of March. I called him several times and finally caught up with him about a month ago, when he said he had had some family issues and would get back to me soon. But he never did. I spent time cleaning my house, speaking with him, writing him an email with all the details of my project, calling references, and waiting months for an answer. The very least he could have done was said he wasn't interested in the project."

Kate V on March 2021


Avatar for Matrix Basement Finishing Madison

Matrix Basement Finishing Madison

N57W14502 Shawn Circle
4.40(
30
)
Approved Pro

Matrix Basement Finishing Madison

N57W14502 Shawn Circle
4.40(
30
)
Approved Pro
Customers say: Quality work
15 local quotes requested
41 years of experience

We offer high quality basement, bathroom & garage remodeling backed by excellent service and a lifetime warranty. Expect nothing less than high value remodeling with Matrix Home Solutions. We work within your budget to create a space that is as functional and durable as it is beautiful. With Matrix, you will receive a free one-on-one design consultation and precision pricing. Locally owned and operated, we are known for our prompt service and attention to detail. Be sure to give us a call today!

"Matrix did a great job finishing my basement. It looks great, and we are very happy with the finished product."

John C on May 2025

We offer high quality basement, bathroom & garage remodeling backed by excellent service and a lifetime warranty. Expect nothing less than high value remodeling with Matrix Home Solutions. We work within your budget to create a space that is as functional and durable as it is beautiful. With Matrix, you will receive a free one-on-one design consultation and precision pricing. Locally owned and operated, we are known for our prompt service and attention to detail. Be sure to give us a call today!

"Matrix did a great job finishing my basement. It looks great, and we are very happy with the finished product."

John C on May 2025


"Rick and Bob were very thorough, honest, and value quality in their work. I'm very pleased with the final product and would recommend their services to anyone."

Clint D on August 2024

Granzow Home Improvement, LLC is well known in the home improvement & remodeling industry, as a client-focused company that strives to ensure the highest levels of quality and customer satisfaction

"Rick and Bob were very thorough, honest, and value quality in their work. I'm very pleased with the final product and would recommend their services to anyone."

Clint D on August 2024


Better Environmental Solutions, LLC

733 Struck Street, Unit #44688
4.92(
12
)
Approved Pro

Better Environmental Solutions, LLC

733 Struck Street, Unit #44688
4.92(
12
)
Approved Pro
Customers say: Quick response
14 local quotes requested
20 years of experience

Welcome to Better Environmental Solutions, LLC! We take pride in the quality of work and customer satisfaction, that we give each and every customer! We are known to pay exquisite attention to detail, while making customer satisfaction our top priority. We carry different grades of products to fit in different budgets. Call us today, to learn more about how we can help you!

"friendly, good suggestions for improvements"

William W on July 2025

Welcome to Better Environmental Solutions, LLC! We take pride in the quality of work and customer satisfaction, that we give each and every customer! We are known to pay exquisite attention to detail, while making customer satisfaction our top priority. We carry different grades of products to fit in different budgets. Call us today, to learn more about how we can help you!

"friendly, good suggestions for improvements"

William W on July 2025


Avatar for HT Carpentry

HT Carpentry

119 Forton Street
5.00(
3
)

HT Carpentry

119 Forton Street
5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Thornton Construction is a father and son carpentry team with over 50+ years of combined experience. We specialize in remodels, additions, and custom carpentry of all sorts. We are passionate about high quality craftsmanship and sustainable building methods. No job is too small! Our aim is to provide excellent service with high quality results at an affordable rate. Let us help you make your space your own! -Kitchens, Bathrooms, Additions -Crown Moulding, Base Boards, Doors -Custom Cabinetry and built ins -Stairs, Railings -Decks, Gazebos -Landscaping, pavers, retaining walls

"Great communication and great quality of work. They have done several jobs inside and outside of my home and would recommend them in a heartbeat."

Matt T on August 2024

Thornton Construction is a father and son carpentry team with over 50+ years of combined experience. We specialize in remodels, additions, and custom carpentry of all sorts. We are passionate about high quality craftsmanship and sustainable building methods. No job is too small! Our aim is to provide excellent service with high quality results at an affordable rate. Let us help you make your space your own! -Kitchens, Bathrooms, Additions -Crown Moulding, Base Boards, Doors -Custom Cabinetry and built ins -Stairs, Railings -Decks, Gazebos -Landscaping, pavers, retaining walls

"Great communication and great quality of work. They have done several jobs inside and outside of my home and would recommend them in a heartbeat."

Matt T on August 2024


Avatar for Culver Construction

Culver Construction

7242 Squire Circle
5.00(
9
)

Culver Construction

7242 Squire Circle
5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We have the experience and dedication to get the job done right! Specializing in Handyman services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today! I have experience in roofing, siding, framing, and drywall, and deck repair. I can also custom build sheds, chicken coops, repair trailers, and any other projects you have.

"Perfectly. Fast and efficient! Very nice guy! Definitely would use them again."

Pat L on September 2024

We have the experience and dedication to get the job done right! Specializing in Handyman services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today! I have experience in roofing, siding, framing, and drywall, and deck repair. I can also custom build sheds, chicken coops, repair trailers, and any other projects you have.

"Perfectly. Fast and efficient! Very nice guy! Definitely would use them again."

Pat L on September 2024

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Basement Remodel questions, answered by experts

The most challenging part of finishing a basement is addressing moisture control. Basement waterproofing is an essential task that requires a professional’s skills and knowledge. If you don’t properly waterproof your finished basement, it’ll be vulnerable to dampness, water damage, and mold growth. Ensuring proper insulation and ventilation to combat these issues while meeting building codes adds complexity to your remodeling project.

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.

Finishing a basement can provide a great return on investment, by increasing the market price of your home when you want to sell. Beyond that, there are many reasons to finish your basement. Doing so expands the usable square footage of your home, so you can enjoy it more, even as your family grows. Renovating your basement costs less in terms of time, energy, and money than having to search for and buy a new home.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

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.

The Sun Prairie, WI homeowners’ guide to basement remodels

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