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Find Addition to existing structure builders in Willowbrook

RDB Remodeling Group

1879 Neltnor Blvd
4.00(
7
)
Approved Pro

RDB Remodeling Group

1879 Neltnor Blvd
4.00(
7
)
Approved Pro
Customers say: Quick response
25 years of experience
Free onsite estimate

Remodeling your home is a big venture, and it is important that you feel comfortable with the contractor you choose. With over twenty years of construction and remodeling experience, The RDB Remodeling Group takes great pride in our efforts on making our customers satisfaction the number one priority by exceeding their expectations. We build relationships with our customers because we have a client for life philosophy. The RDB Remodeling Group believes that it is our unique approach along with the creative suggestions from our staff that give us a distinct advantage towards making your wishes become reality.

"In Spring 2024, Bob responded to our request to add a roughly 240 square foot addition to the back of our house. From the first phone call to the final walk through, Bob was a trusted presence and thorough communicator. He listed to our requests, answered our questions, offered suggestions and explained challenges in a consistent, clear and timely manner (which was extremely appreciated for first-timers going through this process). It's been roughly 8 months since completion and having a new office and family room has made a HUGE difference in my family's quality of life. His costs were fair and, given that we made some slight tweaks to our original plans, we stayed roughly within budget in terms of time and money. I highly recommend Bob and his excellent team of subcontractors as well."

John G on April 2025

Remodeling your home is a big venture, and it is important that you feel comfortable with the contractor you choose. With over twenty years of construction and remodeling experience, The RDB Remodeling Group takes great pride in our efforts on making our customers satisfaction the number one priority by exceeding their expectations. We build relationships with our customers because we have a client for life philosophy. The RDB Remodeling Group believes that it is our unique approach along with the creative suggestions from our staff that give us a distinct advantage towards making your wishes become reality.

"In Spring 2024, Bob responded to our request to add a roughly 240 square foot addition to the back of our house. From the first phone call to the final walk through, Bob was a trusted presence and thorough communicator. He listed to our requests, answered our questions, offered suggestions and explained challenges in a consistent, clear and timely manner (which was extremely appreciated for first-timers going through this process). It's been roughly 8 months since completion and having a new office and family room has made a HUGE difference in my family's quality of life. His costs were fair and, given that we made some slight tweaks to our original plans, we stayed roughly within budget in terms of time and money. I highly recommend Bob and his excellent team of subcontractors as well."

John G on April 2025


Avatar for Buildmax

Buildmax

621 South Grant Ave
4.75(
2
)
Approved Pro

Buildmax

621 South Grant Ave
4.75(
2
)
Approved Pro
Customers say: Quick response
24 years of experience
Free onsite estimate

With 20 years of experience in industry, Buildmax is your industry expert in DuPage county. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you that we will not leave your property until you are completely satisfied with our work. Give us a call today & we look forward to working with you!

"Hasn’t started yet. But did hire"

scott t on January 2024

With 20 years of experience in industry, Buildmax is your industry expert in DuPage county. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you that we will not leave your property until you are completely satisfied with our work. Give us a call today & we look forward to working with you!

"Hasn’t started yet. But did hire"

scott t on January 2024


J & J Home Builders

1151 Highland Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

J & J Home Builders

1151 Highland Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

J & J Home Builders is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

J & J Home Builders is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.


"No comments provided."

Mary F on February 2019

At Creative Concepts Construction, Inc., we understand the importance of doing quality work, with no surprises. Let us help you with your next project. You can always count on us for reliability, great communication, integrity, and quality work. We look forward to earning your business!

"No comments provided."

Mary F on February 2019


Avatar for DemoWorks

DemoWorks

19 N Green St Unit 111
4.75(
18
)
Approved Pro

DemoWorks

19 N Green St Unit 111
4.75(
18
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
6 years of experience

Demo Workers is a leading contractor for interior remodeling projects. Our team of professionals specializes in Kitchen Remodels, Bathroom Remodels and Major Home Renovation Projects. Our professionals have earned a reputation for high quality services at an affordable price point. Call DemoWorks for a quote to remodel your bathroom, kitchen, or commercial space.

"Excellent professional group of contractors that were on time & on budget, while adjusting for design changes approved as work unfolded."

Anne C on January 2025

Demo Workers is a leading contractor for interior remodeling projects. Our team of professionals specializes in Kitchen Remodels, Bathroom Remodels and Major Home Renovation Projects. Our professionals have earned a reputation for high quality services at an affordable price point. Call DemoWorks for a quote to remodel your bathroom, kitchen, or commercial space.

"Excellent professional group of contractors that were on time & on budget, while adjusting for design changes approved as work unfolded."

Anne C on January 2025


Avatar for Genstone Construction

Genstone Construction

900 S. Frontage Rd. Suite #105
5.00(
5
)
Approved Pro

Genstone Construction

900 S. Frontage Rd. Suite #105
5.00(
5
)
Approved Pro
107 local quotes requested
7 years of experience

We bring over 40 years of expertise in bespoke home renovations crafted to reflect your vision, lifestyle, and standards. From gourmet kitchens and spa-inspired bathrooms to seamless additions and full-home transformations, our work is defined by timeless design, superior craftsmanship, and a client-first approach. Our elite team delivers a seamless experience from concept to completion, managed with meticulous attention to detail ensuring daily progress, quality, and clear communication. We don’t ask for upfront payments - because trust is earned, not expected. Work begins only once permits are secured and materials are ready, ensuring complete transparency. Clients are fully protected with contractor liability insurance and receive lien waivers with each payment milestone. No two homes and our custom process ensures a tailored renovation experience that delivers luxury without compromise and beauty without the burden.

We bring over 40 years of expertise in bespoke home renovations crafted to reflect your vision, lifestyle, and standards. From gourmet kitchens and spa-inspired bathrooms to seamless additions and full-home transformations, our work is defined by timeless design, superior craftsmanship, and a client-first approach. Our elite team delivers a seamless experience from concept to completion, managed with meticulous attention to detail ensuring daily progress, quality, and clear communication. We don’t ask for upfront payments - because trust is earned, not expected. Work begins only once permits are secured and materials are ready, ensuring complete transparency. Clients are fully protected with contractor liability insurance and receive lien waivers with each payment milestone. No two homes and our custom process ensures a tailored renovation experience that delivers luxury without compromise and beauty without the burden.


All Pro Remodeling of Northern Chicago

115 Lockerbie Ln
3.75(
304
)
Approved Pro

All Pro Remodeling of Northern Chicago

115 Lockerbie Ln
3.75(
304
)
Approved Pro
Customers say: True professional
50 local quotes requested
7 years of experience

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.

"Called Angie's lost got these guys for a minor floor repair. Signed paperwork paid a deposit and then I changed myind the next day. Ask for my return deposit minus the 10% charge. Never recieved ot now we are in court!! Do not trust these guys they are cheats and thieves!!"

Marcus V on August 2025

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.

"Called Angie's lost got these guys for a minor floor repair. Signed paperwork paid a deposit and then I changed myind the next day. Ask for my return deposit minus the 10% charge. Never recieved ot now we are in court!! Do not trust these guys they are cheats and thieves!!"

Marcus V on August 2025


ARK Specialty Service Co.

255 Oak Street
5.00(
2
)
Approved Pro

ARK Specialty Service Co.

255 Oak Street
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

Welcome to A.R.K. Specialty Service Co.! 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. Call us today to learn more about how we can help you!

"A.R.K. Specialty Service was a very professional family-run, business. From the start, they provided a very detailed quote for our custom-finished basement project and we valued their vast experience in recommendations of layout, design, and functionality of our space. The level of detail and input they sought from us was very much appreciated and we felt throughout the process their #1 goal was customer satisfaction and making sure we were extremely happy with the final result. The finished product blew us away. Our 1600 square feet of space was turned from a drab, cold, unfinished space into a beautiful custom bar, built-in cabinet large living room, 3/4 bathroom, bedroom, fitness room, and entertainment/game room. Our family will enjoy many years to come in this beautiful space A.R.K. Specialty Service created for us and we are extremely happy we chose them to build us the basement of our dreams!"

Jeff M on July 2018

Welcome to A.R.K. Specialty Service Co.! 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. Call us today to learn more about how we can help you!

"A.R.K. Specialty Service was a very professional family-run, business. From the start, they provided a very detailed quote for our custom-finished basement project and we valued their vast experience in recommendations of layout, design, and functionality of our space. The level of detail and input they sought from us was very much appreciated and we felt throughout the process their #1 goal was customer satisfaction and making sure we were extremely happy with the final result. The finished product blew us away. Our 1600 square feet of space was turned from a drab, cold, unfinished space into a beautiful custom bar, built-in cabinet large living room, 3/4 bathroom, bedroom, fitness room, and entertainment/game room. Our family will enjoy many years to come in this beautiful space A.R.K. Specialty Service created for us and we are extremely happy we chose them to build us the basement of our dreams!"

Jeff M on July 2018


Avatar for T6 Construction & Development, Inc.

T6 Construction & Development, Inc.

900 Ogdon Avenue, Suite 333
5.00(
3
)
Approved Pro

T6 Construction & Development, Inc.

900 Ogdon Avenue, Suite 333
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

We're a well established business with over 20 years of unmatched expertise. Customer preference and priorities are always first. We're very timely with our work, and never lose attention to detail. T6 Construction & Development, Inc., has built a reputation for quality work with each satisfied customer. Our sense of pride is apparent in every restoration we complete. Call T6 Construction & Development, Inc., today, and we'll be there in your time of need.

"From the first time on site, during conception of the design, to the final walk through, Chris and everyone at T6 were absolute professionals. Outstanding final product!"

Chris B on November 2020

We're a well established business with over 20 years of unmatched expertise. Customer preference and priorities are always first. We're very timely with our work, and never lose attention to detail. T6 Construction & Development, Inc., has built a reputation for quality work with each satisfied customer. Our sense of pride is apparent in every restoration we complete. Call T6 Construction & Development, Inc., today, and we'll be there in your time of need.

"From the first time on site, during conception of the design, to the final walk through, Chris and everyone at T6 were absolute professionals. Outstanding final product!"

Chris B on November 2020


Kingdom Construction & Remodeling, LLC

36 Wildmere Drive
5.00(
10
)
Approved Pro

Kingdom Construction & Remodeling, LLC

36 Wildmere Drive
5.00(
10
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
10 local quotes requested

We are locally owned and operated. We provide unmatched customer service. We take pride in our professionalism and cleanliness on our job sites. Call us today for your free estimate! We look forward to doing business with you!

"This was the most painless experience ever! Everyone was professional and so kind Every step was explained to me as we went through the process I would hire him 1000 times over And I am so happy with the end result!!"

Jennifer d on August 2023

We are locally owned and operated. We provide unmatched customer service. We take pride in our professionalism and cleanliness on our job sites. Call us today for your free estimate! We look forward to doing business with you!

"This was the most painless experience ever! Everyone was professional and so kind Every step was explained to me as we went through the process I would hire him 1000 times over And I am so happy with the end result!!"

Jennifer d on August 2023

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

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Willowbrook, 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.

  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.