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Addition to existing structure builders in Chicago

J & J Home Builders
1151 Highland Avenue
New on HomeAdvisorNew on Angi
Approved Pro
J & J Home Builders
1151 Highland Avenue
New on AngiNew 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.


Custom Cut Renovations, LLP
1044 Thackery Ln
4.88(
36
)
Approved Pro
Custom Cut Renovations, LLP
1044 Thackery Ln
4.88(
36
)
Approved Pro
Customers say: Quick response
15 years of experience
Free onsite estimate

Titan Flooring, 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.

"I hired this company to lay wood flooring throughout the house, to refinish the stairs and to replace all banisters and railings. I couldn't be more please with how this project came out. The people that worked here were professional and did a phenomenal. Hands down, some of the best people I've worked with. They showed up on time, the quality of the work was fantastic and they left my house cleaner than when they started. I was so pleased with everything and everyone related to this job that I called them back to renovate my kitchen. They are the only company I will use going forward. I was lucky to find them. "

Sue V on April 2025

Titan Flooring, 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.

"I hired this company to lay wood flooring throughout the house, to refinish the stairs and to replace all banisters and railings. I couldn't be more please with how this project came out. The people that worked here were professional and did a phenomenal. Hands down, some of the best people I've worked with. They showed up on time, the quality of the work was fantastic and they left my house cleaner than when they started. I was so pleased with everything and everyone related to this job that I called them back to renovate my kitchen. They are the only company I will use going forward. I was lucky to find them. "

Sue V on April 2025


Avatar for ONSITE ROOM SERVICES INC.
ONSITE ROOM SERVICES INC.
730 N LYLE AVE
New on HomeAdvisorNew on Angi
Approved Pro
ONSITE ROOM SERVICES INC.
730 N LYLE AVE
New on AngiNew on HomeAdvisor
Approved Pro
20 years of experience
Free onsite estimate

ONSITE ROOM SERVICES 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.

ONSITE ROOM SERVICES 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.


Smart City Group
2231 Ash Street
New on HomeAdvisorNew on Angi
Approved Pro
Smart City Group
2231 Ash Street
New on AngiNew on HomeAdvisor
Approved Pro
3 years of experience
Free onsite estimate

Welcome to Smart City Group! 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!

Welcome to Smart City Group! 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!


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


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


ERG Developers, LLC
1000 South Clark Street, Suite TH5
5.00(
1
)
Approved Pro
ERG Developers, LLC
1000 South Clark Street, Suite TH5
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

Our mission at ERG Developers, LLC, is to continue the growth of our business, by doing right by all of our clients. We love seeing that one of a kind smile, on a home owners face at the end of a project! ERG Developers, LLC, stacks up with the competition, and surpasses it with competitive prices, second to none workmanship, and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"He and his staff are very professional! They completed the project on time and I love the way it turned out!"

Anthony Z on September 2020

Our mission at ERG Developers, LLC, is to continue the growth of our business, by doing right by all of our clients. We love seeing that one of a kind smile, on a home owners face at the end of a project! ERG Developers, LLC, stacks up with the competition, and surpasses it with competitive prices, second to none workmanship, and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"He and his staff are very professional! They completed the project on time and I love the way it turned out!"

Anthony Z on September 2020


Hero...Your Construction Partner
9510 Lawler Avenue
5.00(
3
)
Approved Pro
Hero...Your Construction Partner
9510 Lawler Avenue
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 years of experience

we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Outstanding, thorough work, and a good value."

Les L on May 2024

we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We look forward to earning your business.

"Outstanding, thorough work, and a good value."

Les L on May 2024


Avatar for 3G Construction, LLC
3G Construction, LLC
8009 Giddings St
5.00(
2
)
Approved Pro
3G Construction, LLC
8009 Giddings St
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

With over 35 years of experience in the home improvement industry, we are the experts you need to take care of your home. We handle everything from addition builds, remodeling, and much more no matter the size and scope. We will treat your home as we would treat our own. Give 3G Construction, LLC a call today and we look forward to working with you!

"3G did an amazing job remodeling 2 baths in my home! Communication was excellent. They were prompt, courteous, and easy to work with. Everyone who worked on the jobs did quality work and cleaned up after themselves. I would hire 3G again in a heartbeat!"

Beth N on July 2019

With over 35 years of experience in the home improvement industry, we are the experts you need to take care of your home. We handle everything from addition builds, remodeling, and much more no matter the size and scope. We will treat your home as we would treat our own. Give 3G Construction, LLC a call today and we look forward to working with you!

"3G did an amazing job remodeling 2 baths in my home! Communication was excellent. They were prompt, courteous, and easy to work with. Everyone who worked on the jobs did quality work and cleaned up after themselves. I would hire 3G again in a heartbeat!"

Beth N on July 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

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FAQs for addition to existing structure building service projects in Chicago, 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 Chicago, 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
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built-in outdoor kitchen with grill and sink
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