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Addition to existing structure builders in Beloit

Avatar for Connell Construction, LLC
Connell Construction, LLC
4821 W Rockport Rd
5.00(
3
)
Approved Pro
Connell Construction, LLC
4821 W Rockport Rd
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"We were very pleased with the construction of our house. Bob and his Brother Joe as well as their apprentice did a great job on our house. The house was so good that it we had our house selected to be in the parade of homes. We would highly recommend Connell Construction."

Bob K on April 2023

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"We were very pleased with the construction of our house. Bob and his Brother Joe as well as their apprentice did a great job on our house. The house was so good that it we had our house selected to be in the parade of homes. We would highly recommend Connell Construction."

Bob K on April 2023


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
82 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 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
218 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 Young’s Remodeling LLC
Young’s Remodeling LLC
1631 Pearson Street
4.80(
70
)
Approved Pro
Young’s Remodeling LLC
1631 Pearson Street
4.80(
70
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
61 local quotes requested

Young’s Remodeling LLC is a Family & Veteran Owned construction company that prides itself in offering exceptional service and quality. We offer a wide range of construction and remodeling services and look forward to working alongside you to bring your vision for your home to life.

"We had hired Art in the past and were very pleased with his work. We recently hired Art and his son Levi for a cabin build. The work was professional and timely with quality results. We highly recommend Art Young Construction. They worked with us, giving us suggestions and took time to listen to us. Even when they were returning to the work site the next day, they always cleaned up the area and were very neat and tidy. Their work is excellent. We can’t say enough about their work ethic and professionalism."

Ron & Patty K on September 2021

Young’s Remodeling LLC is a Family & Veteran Owned construction company that prides itself in offering exceptional service and quality. We offer a wide range of construction and remodeling services and look forward to working alongside you to bring your vision for your home to life.

"We had hired Art in the past and were very pleased with his work. We recently hired Art and his son Levi for a cabin build. The work was professional and timely with quality results. We highly recommend Art Young Construction. They worked with us, giving us suggestions and took time to listen to us. Even when they were returning to the work site the next day, they always cleaned up the area and were very neat and tidy. Their work is excellent. We can’t say enough about their work ethic and professionalism."

Ron & Patty K on September 2021


Avatar for Northwoods Home Builders
Northwoods Home Builders
10688 West County Highway B
5.00(
2
)
Approved Pro
Northwoods Home Builders
10688 West County Highway B
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
103 local quotes requested

Professional and creative home builders. We help make your home dreams become a reality.

"It was done very professionally, on time. Strong deck for family to use and enjoy the outdoors."

Burt D on August 2024

Professional and creative home builders. We help make your home dreams become a reality.

"It was done very professionally, on time. Strong deck for family to use and enjoy the outdoors."

Burt D on August 2024


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
55 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 Top Bros Construction & Remodeling Inc.
Top Bros Construction & Remodeling Inc.
1334 N Lake Shore Dr
4.88(
65
)
Approved Pro
Top Bros Construction & Remodeling Inc.
1334 N Lake Shore Dr
4.88(
65
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
998 local quotes requested

Top Bros Construction & Remodeling Inc. is a family owned business by two brothers that love to create customers imaginations into realities. We as Top Bros Construction do all kind of interior remodeling in people's homes. From remodeling your bathrooms into master bathrooms or having the nicest kitchen you ever picture. We also install all hard surface floors starting from vinyl planks, laminate, vct tile, hardwood, engineer hardwood, ceramics. We refinishing and varnish hardwood floors as well as stairs and handrails. Were love to help our customers go thru the whole experience in a great matter of order and completion.

"I started the project with simple plans to replace and fix problems in a newly purchased home. brought Top Bros in and them came up with a number of great ideas to improve the look and function of the home. Looks great"

Andrew s on February 2025

Top Bros Construction & Remodeling Inc. is a family owned business by two brothers that love to create customers imaginations into realities. We as Top Bros Construction do all kind of interior remodeling in people's homes. From remodeling your bathrooms into master bathrooms or having the nicest kitchen you ever picture. We also install all hard surface floors starting from vinyl planks, laminate, vct tile, hardwood, engineer hardwood, ceramics. We refinishing and varnish hardwood floors as well as stairs and handrails. Were love to help our customers go thru the whole experience in a great matter of order and completion.

"I started the project with simple plans to replace and fix problems in a newly purchased home. brought Top Bros in and them came up with a number of great ideas to improve the look and function of the home. Looks great"

Andrew s on February 2025


Avatar for Tairi Construction
Tairi Construction
7032 W Greenfield Ave
5.00(
5
)
Approved Pro
Tairi Construction
7032 W Greenfield Ave
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
823 local quotes requested

At Tairi Construction we stand with our customers. We strive to make your fantasies a reality, by specializing in all aspects of home remodeling. The services that we provide are: painting, hard wood and laminate flooring, complete kitchen and bathroom remodels, full Rec room remodel, tile work, and shower installs that will take as little as one day! For any and all inquiries please contact us at (414)376-7377

"Excellent work. Took the time to make sure the job was done perfect. Cleaned up every day"

Doug L on February 2023

At Tairi Construction we stand with our customers. We strive to make your fantasies a reality, by specializing in all aspects of home remodeling. The services that we provide are: painting, hard wood and laminate flooring, complete kitchen and bathroom remodels, full Rec room remodel, tile work, and shower installs that will take as little as one day! For any and all inquiries please contact us at (414)376-7377

"Excellent work. Took the time to make sure the job was done perfect. Cleaned up every day"

Doug L on February 2023


Avatar for JC BUILDERS INC
JC BUILDERS INC
P.O. Box 1038
4.64(
11
)
Approved Pro
JC BUILDERS INC
P.O. Box 1038
4.64(
11
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
40 local quotes requested

J C Builders is a Full service remodeling contractor providing services in south central Wisconsin since 1981.

"JC Builders do excellent work and are wonderful to work with! I highly recommend them for any remodeling, rebuilding projects. Prices are fair and workmanship and attention to detail are top notch. And, they know all the best plumbers and electricians in the business. They are my 'go to' guys whenever I need anything done around the house."

Vicky B on December 2018

J C Builders is a Full service remodeling contractor providing services in south central Wisconsin since 1981.

"JC Builders do excellent work and are wonderful to work with! I highly recommend them for any remodeling, rebuilding projects. Prices are fair and workmanship and attention to detail are top notch. And, they know all the best plumbers and electricians in the business. They are my 'go to' guys whenever I need anything done around the house."

Vicky B on December 2018


Avatar for MH Renovations LLC
MH Renovations LLC
Unknown
4.94(
100
)
Approved Pro
MH Renovations LLC
Unknown
4.94(
100
)
Approved Pro
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
1103 local quotes requested

MH Renovations LLC is a family owned & operated Home Improvement company serving Southeastern Wisconsin. We provide you with high quality customized and detailed work to fit your budget and lifestyle. Rest assure, during any construction project, we will keep your home and materials clean and protected. We are a Licensed and fully Insured company. With a variety of offerings to choose from, we're sure you'll be happy working with us. Look around our website and if you have any comments or questions, please feel free to contact us.

"Extremely well. It's nice to work with someone that has a great professional work ethic."

Bethanne C on February 2025

MH Renovations LLC is a family owned & operated Home Improvement company serving Southeastern Wisconsin. We provide you with high quality customized and detailed work to fit your budget and lifestyle. Rest assure, during any construction project, we will keep your home and materials clean and protected. We are a Licensed and fully Insured company. With a variety of offerings to choose from, we're sure you'll be happy working with us. Look around our website and if you have any comments or questions, please feel free to contact us.

"Extremely well. It's nice to work with someone that has a great professional work ethic."

Bethanne C on February 2025

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Showing 1-10 of 439

Addition to existing structure building services FAQs

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

The homeowners guide to addition to existing structure building services
From average costs to expert advice, get all the answers you need to get your job done.
BRIGHT OPEN ATTIC SPACE
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An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
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Looking to vault a ceiling? Here’s how much it costs, what factors affect cost, and what to expect.
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Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
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Discover how much a log cabin costs to build, exploring how factors like its size, site prep, utilities, finishes, and labor rates affect the total price.
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Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
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Work out the full cost to repair earthquake damage based on the type of damage, including foundation issues, utility lines, and cracked walls.
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