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Addition to existing structure builders in Collinsville

AP-Construction
303 W National St.
4.50(
2
)
Approved Pro
AP-Construction
303 W National St.
4.50(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. We offer a variety of general contractor home improvement services that are customizable to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"They were a group of people that always made you smile, and while listening to them when I was working in my office you could hear them laughing they enjoy what they re doing. I will have them back to do more. They re a great group of people they have come into your home because your house the way you want it"

Jo Ann J on July 2020

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. We offer a variety of general contractor home improvement services that are customizable to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"They were a group of people that always made you smile, and while listening to them when I was working in my office you could hear them laughing they enjoy what they re doing. I will have them back to do more. They re a great group of people they have come into your home because your house the way you want it"

Jo Ann J on July 2020


Avatar for EATON BROTHERS CONSTRUCTION LLC
EATON BROTHERS CONSTRUCTION LLC
111 Southeast St
5.00(
11
)
Approved Pro
EATON BROTHERS CONSTRUCTION LLC
111 Southeast St
5.00(
11
)
Approved Pro
Customers say: Quick response
39 local quotes requested
19 years of experience

We Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"They were amazing and I will refer them to anybody. We love our new deck."

Donna W on June 2025

We Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"They were amazing and I will refer them to anybody. We love our new deck."

Donna W on June 2025


Avatar for Patriot Landscape
Patriot Landscape
Based In
5.00(
2
)
Approved Pro
Patriot Landscape
Based In
5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
613 local quotes requested

We specialize in all phases of landscaping, hardscaping, above ground pools, semi-inground pools, and more! 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! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Top notch service- had new mulch put down throughout by entire yard in addition to having old plants removed and new ones planted. Very professional!"

Christine T on August 2023

We specialize in all phases of landscaping, hardscaping, above ground pools, semi-inground pools, and more! 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! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Top notch service- had new mulch put down throughout by entire yard in addition to having old plants removed and new ones planted. Very professional!"

Christine T on August 2023


Avatar for Life Outdoors
Life Outdoors
1801 N 15th St
5.00(
10
)
Approved Pro
Life Outdoors
1801 N 15th St
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
231 local quotes requested

We offer custom designs, paver patios, retaining walls, water features, landscape lighting and plantings. Having been in the landscaping industry for over 10 years we take pride in our work. Honesty and integrity are two of the most important parts of any quality project.

"The people from Life Outdoors were great to work with. We had 2 retaining walls replaced along with new grass planted between the 2. They did excellent work and are very friendly & knowledgeable. I will definitely use them for future projects."

Jeff R on October 2024

We offer custom designs, paver patios, retaining walls, water features, landscape lighting and plantings. Having been in the landscaping industry for over 10 years we take pride in our work. Honesty and integrity are two of the most important parts of any quality project.

"The people from Life Outdoors were great to work with. We had 2 retaining walls replaced along with new grass planted between the 2. They did excellent work and are very friendly & knowledgeable. I will definitely use them for future projects."

Jeff R on October 2024


Avatar for All-Pro Construction & Landscape
All-Pro Construction & Landscape
1115 Priscilla Ct.
4.32(
25
)
Approved Pro
All-Pro Construction & Landscape
1115 Priscilla Ct.
4.32(
25
)
Approved Pro
584 local quotes requested
23 years of experience

Big or Small, We Do It All! Servicing the entire metro area.We will work with you to fulfill all of your needs. No job is too small or too big for us. We are family owned and operated as well as highly educated with univeristy degrees. We take pride in our work and strive to provide the best customer service. Take a look of some of our work on our company website and you will see the All-Pro difference. All Cleanup is always included in the quoted price with a positive grade for proper drainage away from the house. Our Patios come with a lifetime warranty, Certified Installation by true Professionals. Call Now To Hear About Our Current Specials.

"It took a while between signing the contract and the start of work, but the end result was worth it. The crew showed up on time, got right to work, and checked with me daily with any questions. It was critical that the project stay on budget and Bill did that. They did a good job of clean-up too!"

Hank C on August 2024

Big or Small, We Do It All! Servicing the entire metro area.We will work with you to fulfill all of your needs. No job is too small or too big for us. We are family owned and operated as well as highly educated with univeristy degrees. We take pride in our work and strive to provide the best customer service. Take a look of some of our work on our company website and you will see the All-Pro difference. All Cleanup is always included in the quoted price with a positive grade for proper drainage away from the house. Our Patios come with a lifetime warranty, Certified Installation by true Professionals. Call Now To Hear About Our Current Specials.

"It took a while between signing the contract and the start of work, but the end result was worth it. The crew showed up on time, got right to work, and checked with me daily with any questions. It was critical that the project stay on budget and Bill did that. They did a good job of clean-up too!"

Hank C on August 2024


Avatar for Perfect Choice Home Solutions Your Authorized Bath Planet Dealer of St. Louis
Perfect Choice Home Solutions Your Authorized Bath Planet Dealer of St. Louis
2424 MO-94 South Outer Rd
4.81(
128
)
Approved Pro
Perfect Choice Home Solutions Your Authorized Bath Planet Dealer of St. Louis
2424 MO-94 South Outer Rd
4.81(
128
)
Approved Pro
Customers say: Terrific value
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
5271 local quotes requested

Complete Bath and 2 Day Remodeling services offered: also roofing, siding, windows, and gutter/gutter cover installations. Bath Planet has been the go-to St. Louis bathroom remodeling company for over 17 years. From replacement shower surrounds to bathtubs that are designed to fit perfectly over your existing tub, our experienced team has what it takes to provide you with a bathroom that is beautiful and extremely easy to maintain. Not only do we believe very strongly in providing quality, long-lasting products, we also believe in providing an outstanding customer experience. We offer free estimates, and we can complete your project in as little as one day. We also have energy Star double pane windows, beautiful vinyl siding looks like real wood, roofing of all different styles.

"I had my bathroom done and It turned out so beautiful pictures don't even do its justice. When I had my consultation the designer consultant was very attentive and answered all questions in the most professional way possible. I recommend Perfect Choice Home Solutions, Authorized Bath Planet Dealer of St Louis to anyone in the surrounding area of services to check them out if you're getting your bathroom, roof, gutters, siding or windows done!"

Jessica G on May 2025

Complete Bath and 2 Day Remodeling services offered: also roofing, siding, windows, and gutter/gutter cover installations. Bath Planet has been the go-to St. Louis bathroom remodeling company for over 17 years. From replacement shower surrounds to bathtubs that are designed to fit perfectly over your existing tub, our experienced team has what it takes to provide you with a bathroom that is beautiful and extremely easy to maintain. Not only do we believe very strongly in providing quality, long-lasting products, we also believe in providing an outstanding customer experience. We offer free estimates, and we can complete your project in as little as one day. We also have energy Star double pane windows, beautiful vinyl siding looks like real wood, roofing of all different styles.

"I had my bathroom done and It turned out so beautiful pictures don't even do its justice. When I had my consultation the designer consultant was very attentive and answered all questions in the most professional way possible. I recommend Perfect Choice Home Solutions, Authorized Bath Planet Dealer of St Louis to anyone in the surrounding area of services to check them out if you're getting your bathroom, roof, gutters, siding or windows done!"

Jessica G on May 2025


Avatar for Hoffman Concrete, LLC
Hoffman Concrete, LLC
7120 Valley Dr
4.79(
531
)
Approved Pro
Hoffman Concrete, LLC
7120 Valley Dr
4.79(
531
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1827 local quotes requested

Super Service Award Winner for 2013, 2014, 2015, 2016, 2017, 2018, 2019,2020.Hoffman Concrete LLC is a family owned and operated company serving the St. Louis and surrounding areas. We offer competitive pricing, unmatched customer service, and quality workmanship in residential and commercial concrete. From your driveway or decorative stamped patio to a commercial concrete parking lot or private subdivision street replacement. We also design and build outdoor living areas, such as: outdoor kitchens, outdoor bars, outdoor fireplaces, pizza ovens, fire pits with sitting walls, water features, stamped concrete bench and table sets that look like barn wood, we install brick and stone mailbox's, including tuckpointing. We build pavilions, pergolas, decks, covered patios, carports , and fences. We offer polymer modified cementitious overlays, hermetic flake floors, & reflector enhancer floors when tear out and replace is not a option. Our staff has the experience and all the right equipment to design, build, and complete any project on time and on budget. We are fully insured with general liability, and workman's comp insurance. Our reputation is as solid as concrete.

"Finding someone trustworthy that does a great job with great customer service is hard to do. When the project is expensive it makes it more nerve wracking to decide who to go with. If you are lucky enough to find someone that checks those boxes, they become your go to people for your projects and as well as who you recommend. A few years ago I had Hoffman replace my driveway and was completely happy with their service from initial contact to completion. Years later I’m still completely satisfied with my decision to use them. Recently I decided to pour a shed pad and replace an old back patio. There wasn’t a doubt in my mind on who I should call. Like last time the entire experience was top notch. Jessica is amazing to work with from the start and is very friendly and communicative. The owner Mark really cares about the quality of work and clearly appreciates your business. His son, who runs the concrete crew, is also awesome to work with and really cares about a customer-first approach and performing quality jobs. The rest of the crew is also very engaging and respectful and performs high quality work. If you or someone you know is looking for concrete work I cannot recommend them enough. I have a high expectation for work done at my house and they exceed those expectations. You cannot go wrong giving them a call and having them perform the work. They will continue to be my go-to company for all things related to concrete."

Michelle S on June 2025

Super Service Award Winner for 2013, 2014, 2015, 2016, 2017, 2018, 2019,2020.Hoffman Concrete LLC is a family owned and operated company serving the St. Louis and surrounding areas. We offer competitive pricing, unmatched customer service, and quality workmanship in residential and commercial concrete. From your driveway or decorative stamped patio to a commercial concrete parking lot or private subdivision street replacement. We also design and build outdoor living areas, such as: outdoor kitchens, outdoor bars, outdoor fireplaces, pizza ovens, fire pits with sitting walls, water features, stamped concrete bench and table sets that look like barn wood, we install brick and stone mailbox's, including tuckpointing. We build pavilions, pergolas, decks, covered patios, carports , and fences. We offer polymer modified cementitious overlays, hermetic flake floors, & reflector enhancer floors when tear out and replace is not a option. Our staff has the experience and all the right equipment to design, build, and complete any project on time and on budget. We are fully insured with general liability, and workman's comp insurance. Our reputation is as solid as concrete.

"Finding someone trustworthy that does a great job with great customer service is hard to do. When the project is expensive it makes it more nerve wracking to decide who to go with. If you are lucky enough to find someone that checks those boxes, they become your go to people for your projects and as well as who you recommend. A few years ago I had Hoffman replace my driveway and was completely happy with their service from initial contact to completion. Years later I’m still completely satisfied with my decision to use them. Recently I decided to pour a shed pad and replace an old back patio. There wasn’t a doubt in my mind on who I should call. Like last time the entire experience was top notch. Jessica is amazing to work with from the start and is very friendly and communicative. The owner Mark really cares about the quality of work and clearly appreciates your business. His son, who runs the concrete crew, is also awesome to work with and really cares about a customer-first approach and performing quality jobs. The rest of the crew is also very engaging and respectful and performs high quality work. If you or someone you know is looking for concrete work I cannot recommend them enough. I have a high expectation for work done at my house and they exceed those expectations. You cannot go wrong giving them a call and having them perform the work. They will continue to be my go-to company for all things related to concrete."

Michelle S on June 2025


Avatar for Dana King
Dana King
10405 Baur Blvd. Suite H
4.61(
270
)
Approved Pro
Dana King
10405 Baur Blvd. Suite H
4.61(
270
)
Approved Pro
Customers say: Quality work
1072 local quotes requested
22 years of experience

Our role as your chief advisors and remodeler is to make your renovation journey as intelligent and efficient as possible. Whether your goal is to foster a healthier living environment within your home, to create spaces that cater to entertaining, or to fulfill any other dream you may have for your home, we're here to guide you every step of the way, for the best outcome. Our goal is for you to live better at home.

"We were extremely pleased with the work they did when we had our master bathroom remodeled. The entire process was seamless from start to finish. They were so professional when they were in the house and kept the entire area contained. I always assumed a renovation would be stressful, but it was not at all. Picking out the materials and fixtures was even fun! The entire team was great and they were exactly on time to the week. They were very responsive to any questions. I highly recommend them, and hope to work with them again in the future."

Mary Clare F on May 2025

Our role as your chief advisors and remodeler is to make your renovation journey as intelligent and efficient as possible. Whether your goal is to foster a healthier living environment within your home, to create spaces that cater to entertaining, or to fulfill any other dream you may have for your home, we're here to guide you every step of the way, for the best outcome. Our goal is for you to live better at home.

"We were extremely pleased with the work they did when we had our master bathroom remodeled. The entire process was seamless from start to finish. They were so professional when they were in the house and kept the entire area contained. I always assumed a renovation would be stressful, but it was not at all. Picking out the materials and fixtures was even fun! The entire team was great and they were exactly on time to the week. They were very responsive to any questions. I highly recommend them, and hope to work with them again in the future."

Mary Clare F on May 2025


Le Roy Construction & Remodeling
707 N Illinois St
4.75(
4
)
Approved Pro
Le Roy Construction & Remodeling
707 N Illinois St
4.75(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
887 local quotes requested

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! 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! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Everything went great. Job completed on time and clear communication and expectations throughout."

John k on August 2021

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! 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! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Everything went great. Job completed on time and clear communication and expectations throughout."

John k on August 2021


Marin Construction
414 Bismark Ave
No reviews
Marin Construction
414 Bismark Ave
No reviews
17 years of experience

general remodeling

general remodeling

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FAQs for addition to existing structure building service projects in Collinsville, IL

Yes, you can add a bathroom on a concrete slab, but the crew will need to saw-cut the slab, trench in new supply and drain lines, and then patch the concrete without weakening the foundation. Working with an experienced plumber and concrete pro keeps the structure intact and helps the new bathroom pass inspections.

schedule covers planning, permits, framing, rough-ins, finishes, and punch-list items. 

Larger spaces or extensive plumbing and electrical upgrades can stretch the timeline, while a simple powder-room conversion may wrap up faster. Hiring licensed pros helps keep the schedule on track and the work up to code.

The best location depends on how your family uses the space. An upstairs bath keeps nighttime trips close to the bedrooms, while a first-floor powder room is handy for guests and everyday traffic. 

Think about where plumbing lines already run, how much square footage you can spare, and what layout changes fit your budget. A pro can map out the smartest spot and handle any code hurdles.

With the right planning, you can carve out a bathroom in almost any part of the house. A successful addition requires sufficient space, proper ventilation, and access to plumbing and electrical systems. Structural modifications and adherence to building codes are essential. 

This process demands careful planning and the coordination of specialized professionals who ensure that the new space meets all code requirements and functional needs.

Under specific conditions, adding an extra bedroom can boost home value more than adding a bathroom. Home value is driven by overall configuration, market demand, and functional balance. A new bedroom influences the property’s appeal in different ways, while an additional bathroom enhances living convenience. Evaluating the current layout and market trends determines the optimal choice for maximum value.

The Collinsville, IL 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.
master bedroom with fireplace
Jun 26, 2025
Jun 26, 2025
Budget for bedroom remodel costs based on factors such as bedroom size, remodel type, features, materials, labor, and more.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
Apr 19, 2025
Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
Outdoor view of the modern house
Jun 16, 2025
Jun 16, 2025
Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
BRIGHT OPEN ATTIC SPACE
Jun 10, 2025
Jun 10, 2025
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.
white and gray kitchen with butchers block countertop
Apr 8, 2025
Apr 8, 2025
Looking to enhance the warmth and utility of your kitchen? Explore how much a butcher block countertop costs and start your budget here.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
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