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Sunroom or patio enclosure builders in Sun Prairie

Avatar for Kool View Company, Inc.
Kool View Company, Inc.
4701 Triangle Street
4.85(
10
)
Approved Pro
Kool View Company, Inc.
4701 Triangle Street
4.85(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

Since 1973, Kool View Company, Inc., has been providing homeowners with high quality, superior and affordable home improvement products. We are the most experienced sunroom contractors in Wisconsin, having put up over 1,500 sunrooms in Wisconsin and Illinois. If you have a unique design in mind for your new patio or sunroom, you have come to the right place! With our expert engineering, constant research and development, along with our trained staff of designers and craftsmen, Kool View Company, Inc., is in the position to make your dream room an energy efficient reality. Kool View Company, Inc., also specializes in replacement windows, window treatments and basement remodeling helping you both enhance the interior and exterior of your home. Whether you are looking to improve your homes curb appeal, increase outdoor living space or reduce energy costs,Kool View Company, Inc., can make your turn your dream home into a reality.

"Great to work with. Very happy with the finished project. Would use them again."

Peter B on October 2022

Since 1973, Kool View Company, Inc., has been providing homeowners with high quality, superior and affordable home improvement products. We are the most experienced sunroom contractors in Wisconsin, having put up over 1,500 sunrooms in Wisconsin and Illinois. If you have a unique design in mind for your new patio or sunroom, you have come to the right place! With our expert engineering, constant research and development, along with our trained staff of designers and craftsmen, Kool View Company, Inc., is in the position to make your dream room an energy efficient reality. Kool View Company, Inc., also specializes in replacement windows, window treatments and basement remodeling helping you both enhance the interior and exterior of your home. Whether you are looking to improve your homes curb appeal, increase outdoor living space or reduce energy costs,Kool View Company, Inc., can make your turn your dream home into a reality.

"Great to work with. Very happy with the finished project. Would use them again."

Peter B on October 2022


Avatar for Matrix Basement Finishing
Matrix Basement Finishing
3050 N Kennicott Ave
4.56(
267
)
Approved Pro
Matrix Basement Finishing
3050 N Kennicott Ave
4.56(
267
)
Approved Pro
Customers say: Quality work
314 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.

"Great communication. They definitely had our best interests in mind. Would highly recommend"

Kevin B on April 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.

"Great communication. They definitely had our best interests in mind. Would highly recommend"

Kevin B on April 2025


Avatar for GRANZOW HOME IMPROVEMENT LLC
GRANZOW HOME IMPROVEMENT LLC
4.69(
13
)
Approved Pro
GRANZOW HOME IMPROVEMENT LLC
4.69(
13
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
41 local quotes requested

Ready to finish your basement? We care enough to do it right the first time. Our family owned company has been serving homeowners like you since 2001. We are a BASEMENT FINISHING specialist. 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. We have a A+ BBB Rating. You will love our "no pressure" approach, FREE design assistance that comes with nearly 23 years of experience, professionally prepared plans, detail oriented proposals that come with a written guarantee for price accuracy, and our comprehensive written warranty that backs all services we provide. Call now to schedule your FREE formal proposal.

"Granzow Home Improvement LLC exceeded all expectations in finishing our basement, and we couldn’t be happier with the results! From start to finish, Richard and Bob displayed professionalism, skill, and a genuine passion for their craft. The attention to detail was incredible—from the high-quality materials used to the flawless execution of every feature. They transformed our basement into a beautiful, functional space that feels like an extension of the rest of our home, not just an afterthought. Whether it was customizing a plan to fit our needs or ensuring seamless design transitions with the same materials used when our home was built, they listened to our ideas and brought them to life perfectly. Beyond the craftsmanship, they were punctual, respectful, and kept the work area tidy throughout the project. Richard communicated with us every step of the way, ensuring there were no surprises and that we were thrilled with the progress. If you’re looking for a reliable, talented contractor to bring your vision to life, look no further than Granzow Home Improvement LLC . We wholeheartedly recommend them and would hire them again in a heartbeat! Thank you, Richard and Bob, for making our dream basement a reality!"

Erica O on April 2025

Ready to finish your basement? We care enough to do it right the first time. Our family owned company has been serving homeowners like you since 2001. We are a BASEMENT FINISHING specialist. 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. We have a A+ BBB Rating. You will love our "no pressure" approach, FREE design assistance that comes with nearly 23 years of experience, professionally prepared plans, detail oriented proposals that come with a written guarantee for price accuracy, and our comprehensive written warranty that backs all services we provide. Call now to schedule your FREE formal proposal.

"Granzow Home Improvement LLC exceeded all expectations in finishing our basement, and we couldn’t be happier with the results! From start to finish, Richard and Bob displayed professionalism, skill, and a genuine passion for their craft. The attention to detail was incredible—from the high-quality materials used to the flawless execution of every feature. They transformed our basement into a beautiful, functional space that feels like an extension of the rest of our home, not just an afterthought. Whether it was customizing a plan to fit our needs or ensuring seamless design transitions with the same materials used when our home was built, they listened to our ideas and brought them to life perfectly. Beyond the craftsmanship, they were punctual, respectful, and kept the work area tidy throughout the project. Richard communicated with us every step of the way, ensuring there were no surprises and that we were thrilled with the progress. If you’re looking for a reliable, talented contractor to bring your vision to life, look no further than Granzow Home Improvement LLC . We wholeheartedly recommend them and would hire them again in a heartbeat! Thank you, Richard and Bob, for making our dream basement a reality!"

Erica O on April 2025


Avatar for Kool View Co.,Inc.
Kool View Co.,Inc.
1860 Bud Dr #104
New on HomeAdvisorNew on Angi
Approved Pro
Kool View Co.,Inc.
1860 Bud Dr #104
New on AngiNew on HomeAdvisor
Approved Pro
78 local quotes requested
52 years of experience

Serving Southern Wisconsin and the greater Fox Valley area Kool View began business in 1973 selling glass coatings to save energy and stop furniture fading. In 1979 we were awarded a US. Department of Energy grant to study the "honeycomb" concept of window insulation. In 1982 we were granted a patent on our very own "Seal-A-Shade" product. We also began selling passive solar rooms. Over time passive solar sunrooms became our main product. We have built over 2000 sun room, patio room and room additions. Our construction focus has always been saving energy, improving the home environment and adding long term value to your home. If you have a unique design in mind or a challenging job site you have come to the right place! With with our trained staff of designers and craftsmen, Kool View is in the position to make your dream room an energy efficient reality. Kool View offers you the best of the "High Tech" corporate world while remaining a locally owned and operated business. We never forget that our customers are also our neighbors. Drop into our showroom or call us for a free, in-home estimate. We'd love to hear from you!

Serving Southern Wisconsin and the greater Fox Valley area Kool View began business in 1973 selling glass coatings to save energy and stop furniture fading. In 1979 we were awarded a US. Department of Energy grant to study the "honeycomb" concept of window insulation. In 1982 we were granted a patent on our very own "Seal-A-Shade" product. We also began selling passive solar rooms. Over time passive solar sunrooms became our main product. We have built over 2000 sun room, patio room and room additions. Our construction focus has always been saving energy, improving the home environment and adding long term value to your home. If you have a unique design in mind or a challenging job site you have come to the right place! With with our trained staff of designers and craftsmen, Kool View is in the position to make your dream room an energy efficient reality. Kool View offers you the best of the "High Tech" corporate world while remaining a locally owned and operated business. We never forget that our customers are also our neighbors. Drop into our showroom or call us for a free, in-home estimate. We'd love to hear from you!


Avatar for Kool View Co
Kool View Co
4701 Triangle St
4.38(
21
)
Approved Pro
Kool View Co
4701 Triangle St
4.38(
21
)
Approved Pro
Customers say: Quality work
51 local quotes requested
52 years of experience

SERVING SOUTHERN WISCONSIN AND THE FOX VALLEY AREAS Kool View began business in 1973 selling glass coatings to save energy and stop furniture fading. In 1979 we were awarded a US. Department of Energy grant to study the "honeycomb" concept of window insulation. In 1982 we were granted a patent on our very own "Seal-A-Shade" product. We also began selling passive solar rooms. Over time passive solar sunrooms became our main product. We have built over 2000 sun room, patio room and room additions. Our construction focus has always been saving energy, improving the home environment and adding long term value to your home. If you have a unique design in mind or a challenging job site you have come to the right place! With with our trained staff of designers and craftsmen, Kool View is in the position to make your dream room an energy efficient reality. Kool View offers you the best of the "High Tech" corporate world while remaining a locally owned and operated business. We never forget that our customers are also our neighbors. Drop into our showroom or call us for a free, in-home estimate. We'd love to hear from you!

"The final product is good and the price was good. The structure all seems to be high quality and with double pane windows it can hold the climate or out well as needed. With screens all around we can let the air move through when we want. The design process was a good experience, but we were not warned that our decisions in dimensions would result in difficulties with regulations and the electrical work. The lack of communication between sub-contractors during the process resulted in several delays. There were times when we were told there would be hand-off and it didn't happen until we prodded them. We kicked it off in the early spring and it didn't complete until August. Early on, the delays were unavoidable due to weather and ground conditions but after the foundation was in it took to long to complete the structure. The problem is not specifically the total time to complete but being left with very little time to replace the yard and driveway before winter."

Adam C on September 2018

SERVING SOUTHERN WISCONSIN AND THE FOX VALLEY AREAS Kool View began business in 1973 selling glass coatings to save energy and stop furniture fading. In 1979 we were awarded a US. Department of Energy grant to study the "honeycomb" concept of window insulation. In 1982 we were granted a patent on our very own "Seal-A-Shade" product. We also began selling passive solar rooms. Over time passive solar sunrooms became our main product. We have built over 2000 sun room, patio room and room additions. Our construction focus has always been saving energy, improving the home environment and adding long term value to your home. If you have a unique design in mind or a challenging job site you have come to the right place! With with our trained staff of designers and craftsmen, Kool View is in the position to make your dream room an energy efficient reality. Kool View offers you the best of the "High Tech" corporate world while remaining a locally owned and operated business. We never forget that our customers are also our neighbors. Drop into our showroom or call us for a free, in-home estimate. We'd love to hear from you!

"The final product is good and the price was good. The structure all seems to be high quality and with double pane windows it can hold the climate or out well as needed. With screens all around we can let the air move through when we want. The design process was a good experience, but we were not warned that our decisions in dimensions would result in difficulties with regulations and the electrical work. The lack of communication between sub-contractors during the process resulted in several delays. There were times when we were told there would be hand-off and it didn't happen until we prodded them. We kicked it off in the early spring and it didn't complete until August. Early on, the delays were unavoidable due to weather and ground conditions but after the foundation was in it took to long to complete the structure. The problem is not specifically the total time to complete but being left with very little time to replace the yard and driveway before winter."

Adam C on September 2018


Avatar for Mad City Windows & Baths
Mad City Windows & Baths
5020 Voges Rd
4.76(
2,680
)
Approved Pro
Mad City Windows & Baths
5020 Voges Rd
4.76(
2,680
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
2986 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.

"They were so professional, cheerful, and fast!"

David G on April 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.

"They were so professional, cheerful, and fast!"

David G on April 2025


Avatar for Keller Builders LLC
Keller Builders LLC
940 Hwy 51
4.17(
6
)
Approved Pro
Keller Builders LLC
940 Hwy 51
4.17(
6
)
Approved Pro
Customers say: Quality work
217 local quotes requested
Free onsite estimate

We have the experience and dedication to do the job right the first time! We guarantee your satisfaction, and we won’t leave until the job is done right. Call to schedule an estimate today! May contact through email.

"They completed several projects for me. I appreciated the careful attention to doing good work. Each time, I was pleased with the finished look and function."

karen k on March 2021

We have the experience and dedication to do the job right the first time! We guarantee your satisfaction, and we won’t leave until the job is done right. Call to schedule an estimate today! May contact through email.

"They completed several projects for me. I appreciated the careful attention to doing good work. Each time, I was pleased with the finished look and function."

karen k on March 2021


Avatar for Complete Handyman
Complete Handyman
2317 Mica Rd.
4.77(
26
)
Approved Pro
Complete Handyman
2317 Mica Rd.
4.77(
26
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

My name is Mark Schwebach. I am the owner of Complete Handyman as a division of Dream Homes LLC. I founded the company in 2004. I am 100% involved with day to day activities. I specialize in finishing basements. When it comes to basements, I will be involved in every aspect of the job. I will be hands on from the initial design process, the bidding process, acquiring permits, doing the actual construction, overseeing sub-contractors, through to the completion of the finished basement. I personally guarantee the highest level of attention to quality and detail throughout the entire project.

"Mark did an excellent job with finishing our basement, it turned out exactly how we wanted. What we liked most about Mark is that he is very trustworthy and honest. He is very open and transparent with all the costs . He also is very detailed and percise and his subcontractors were very good as well. We would highly reccomend Mark if you need to finish your basement!"

Jim Q on December 2024

My name is Mark Schwebach. I am the owner of Complete Handyman as a division of Dream Homes LLC. I founded the company in 2004. I am 100% involved with day to day activities. I specialize in finishing basements. When it comes to basements, I will be involved in every aspect of the job. I will be hands on from the initial design process, the bidding process, acquiring permits, doing the actual construction, overseeing sub-contractors, through to the completion of the finished basement. I personally guarantee the highest level of attention to quality and detail throughout the entire project.

"Mark did an excellent job with finishing our basement, it turned out exactly how we wanted. What we liked most about Mark is that he is very trustworthy and honest. He is very open and transparent with all the costs . He also is very detailed and percise and his subcontractors were very good as well. We would highly reccomend Mark if you need to finish your basement!"

Jim Q on December 2024


Avatar for Interiors by JW
Interiors by JW
603 West Main Street
New on HomeAdvisorNew on Angi
Approved Pro
Interiors by JW
603 West Main Street
New on AngiNew on HomeAdvisor
Approved Pro
27 years of experience
Free onsite estimate

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 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
266 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

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Sunroom or patio enclosure building services FAQs

A sunroom delivers exceptional benefits by enhancing your home’s value and quality of life. It offers a 49% return on investment by adding versatile living and entertainment space, while its design incorporates abundant natural light and climate-controlled comfort. This additional room not only provides a welcoming area for relaxation and social gatherings but also serves as an ideal setting for indoor gardening, thereby creating a harmonious blend of indoor and outdoor living.

Yes, you can build a sunroom in any climate when it’s engineered with good insulation and quality materials. A four-season sunroom retains warmth effectively in cold weather while offering an inviting, light-filled space throughout the year. Superior insulation and precise construction methods ensure that even in severe climates, the sunroom remains safe, comfortable, and energy-efficient, making it a sound addition to your home.

A standard sunroom project takes four to six days to complete, while more complex builds take two weeks to complete. The project duration is driven by the scope of work and the efficiency of the professional crew. Comprehensive planning, precise material preparation, and dedicated installation all contribute to a well-managed timeline that ensures your sunroom is completed without unnecessary delays.

When choosing between a sunroom and a room addition, the decision must be guided by how you want to transform your living space. A conventional room addition, such as a 12-by-12-foot extension, costs from $11,520 to $28,800, while a sunroom is priced from $22,000 to $43,000 and offers a dedicated area that harnesses natural light. The sunroom provides an elegant space for relaxation and entertainment, but a room addition increases usable interior space in a more traditional manner. Engaging a skilled contractor will ensure that either option meets your specific functional and aesthetic requirements.

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