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Find Addition to existing structure builders in Downers Grove

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.


Avatar for Creative Concepts Construction, Inc.

Creative Concepts Construction, Inc.

1955 Hitchcock Avenue
5.00(
3
)
Approved Pro

Creative Concepts Construction, Inc.

1955 Hitchcock Avenue
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 years of experience

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

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

914 W Hubbard St STE 206
4.75(
18
)
Approved Pro

DemoWorks

914 W Hubbard St STE 206
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


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 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
96 local quotes requested
7 years of experience

Genstone Construction brings over 40 years of experience to high-quality home renovations tailored to your goals and expectations. From kitchens and bathrooms to additions and full remodels, we deliver beautiful, lasting results with a homeowner-first approach. Our expert team – including Estimators, Field Managers, and Repair Specialists – ensures a smooth, transparent process from start to finish. Each project has a dedicated Field Manager overseeing daily progress and quality. We require no upfront payments and only begin work once permits are secured and materials are delivered. Homeowners are included as additional insured on our contractors’ liability insurance, and lien waivers are provided with every payment. Every home is unique, and so is every plan we create. We take the time to understand your goals, preferences, and budget – ensuring a custom renovation that enhances your lifestyle without the stress.

Genstone Construction brings over 40 years of experience to high-quality home renovations tailored to your goals and expectations. From kitchens and bathrooms to additions and full remodels, we deliver beautiful, lasting results with a homeowner-first approach. Our expert team – including Estimators, Field Managers, and Repair Specialists – ensures a smooth, transparent process from start to finish. Each project has a dedicated Field Manager overseeing daily progress and quality. We require no upfront payments and only begin work once permits are secured and materials are delivered. Homeowners are included as additional insured on our contractors’ liability insurance, and lien waivers are provided with every payment. Every home is unique, and so is every plan we create. We take the time to understand your goals, preferences, and budget – ensuring a custom renovation that enhances your lifestyle without the stress.


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


Avatar for Touchstone Group Construction

Touchstone Group Construction

2308 W North Ave # C-1
5.00(
9
)
Approved Pro

Touchstone Group Construction

2308 W North Ave # C-1
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

Touchstone Group Construction is a full-service construction company providing residential and commerciall construction and property management services throughout Chicagoland. From residential remodels or new builds to multi family gut rehabs or cap ex projects, you can be sure we always deliver expert craftsmanship on time and on budget. The core principles of our company are simple: create a relationship with our clients based on honesty and transparency, and deliver high-level craftsmanship on time and on budget. Our experienced team of highly trusted professionals will make certain you are completely satisfied with our work from start to finish while leaving no detail overlooked. If you're interested in learning why our clients love us, contact us today!

"Professional team. Did the job in one day. Worked till the job was complete and everything was cleaned up."

Joann F on March 2020

Touchstone Group Construction is a full-service construction company providing residential and commerciall construction and property management services throughout Chicagoland. From residential remodels or new builds to multi family gut rehabs or cap ex projects, you can be sure we always deliver expert craftsmanship on time and on budget. The core principles of our company are simple: create a relationship with our clients based on honesty and transparency, and deliver high-level craftsmanship on time and on budget. Our experienced team of highly trusted professionals will make certain you are completely satisfied with our work from start to finish while leaving no detail overlooked. If you're interested in learning why our clients love us, contact us today!

"Professional team. Did the job in one day. Worked till the job was complete and everything was cleaned up."

Joann F on March 2020


Avatar for DESIGNFirst Builders

DESIGNFirst Builders

1201 Norwood Avenue
4.92(
12
)
Approved Pro

DESIGNFirst Builders

1201 Norwood Avenue
4.92(
12
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
58 local quotes requested

Founded in 2006, Design First Builders is a premier home remodeling company in the Chicagoland area. With many years of experience and the industry’s top professionals, we are a one-stop-shop solution for all your home remodeling needs. We are a growing company reaching milestones every year. We specialize in Home Additions, Kitchen and Bathroom Remodels, Basement Remodels, Custom Home Design and Build & Custom Cabinetry. Located in Itasca puts us right in your backyard whether you’re a city dweller or live in the suburbs. Design First Builders is your builder for quality, affordable, and unique design-build projects. Call today to schedule your FREE in-home consultation, 630-250-7777.

"We now have a beautiful kitchen. This price tag was on the high end, but that may have been due to either the high price of lumber at the time (Canadian wildfires) or the customer cabinetry that we needed or both. There were a few instances where I was glad we were on sight as I don’t know if the errors we saw would have been caught prior to them being installed. The upfront design and visualization is top notch, as is the quality of the material. The labor used to install was three star at best."

Stephen S on November 2024

Founded in 2006, Design First Builders is a premier home remodeling company in the Chicagoland area. With many years of experience and the industry’s top professionals, we are a one-stop-shop solution for all your home remodeling needs. We are a growing company reaching milestones every year. We specialize in Home Additions, Kitchen and Bathroom Remodels, Basement Remodels, Custom Home Design and Build & Custom Cabinetry. Located in Itasca puts us right in your backyard whether you’re a city dweller or live in the suburbs. Design First Builders is your builder for quality, affordable, and unique design-build projects. Call today to schedule your FREE in-home consultation, 630-250-7777.

"We now have a beautiful kitchen. This price tag was on the high end, but that may have been due to either the high price of lumber at the time (Canadian wildfires) or the customer cabinetry that we needed or both. There were a few instances where I was glad we were on sight as I don’t know if the errors we saw would have been caught prior to them being installed. The upfront design and visualization is top notch, as is the quality of the material. The labor used to install was three star at best."

Stephen S on November 2024


Avatar for Wentworth Construction

Wentworth Construction

870 Schultz St
5.00(
21
)
Approved Pro

Wentworth Construction

870 Schultz St
5.00(
21
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 local quotes requested

Wentworth Construction, Inc., 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.

"It went excellent, they're innovative, problem solving and professional very trust worthy, outstanding planning and quality. Hight attention to detail and creativity. Worked within budget, this is our first big project we highly recommend and will hire Wentworth crew again. Be sure to consider Wentworth for your next instruction project."

Diana W on May 2024

Wentworth Construction, Inc., 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.

"It went excellent, they're innovative, problem solving and professional very trust worthy, outstanding planning and quality. Hight attention to detail and creativity. Worked within budget, this is our first big project we highly recommend and will hire Wentworth crew again. Be sure to consider Wentworth for your next instruction project."

Diana W on May 2024


Avatar for Biango Construction

Biango Construction

5 South 283 Middle Road
4.75(
77
)
Approved Pro

Biango Construction

5 South 283 Middle Road
4.75(
77
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
137 local quotes requested

Biango Construction strives on giving all of our customers the best quality craftsmanship and pricing in the industry. Locally owned operated. We guarantee your satisfaction! Free estimates.

"Nick and his team did an amazing job building a custom bar for our lower living area, as well as remodeling our kitchen. Nick communicated with us every stop of the project, and had contractors ready for tile, paint, and countertops. He and his team and very trustworthy, and we will definitely use them for future projects. 100% recommended."

Shawn G on September 2020

Biango Construction strives on giving all of our customers the best quality craftsmanship and pricing in the industry. Locally owned operated. We guarantee your satisfaction! Free estimates.

"Nick and his team did an amazing job building a custom bar for our lower living area, as well as remodeling our kitchen. Nick communicated with us every stop of the project, and had contractors ready for tile, paint, and countertops. He and his team and very trustworthy, and we will definitely use them for future projects. 100% recommended."

Shawn G on September 2020

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FAQs for addition to existing structure building service projects in Downers Grove, 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 Downers Grove, 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.