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Find Addition to existing structure builders in Algonquin

LCF Consulting

4.56(
9
)
Approved Pro

LCF Consulting

4.56(
9
)
Approved Pro
Customers say: Quick response
25 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of construction management and home improvement services that are customizable to each individual project. We specialize in custom home building, additions to existing structures and a variety of remodels and major renovations but also offer a wide range of expertise for a variety of other projects utilizing a combined 40 years of commercial and residential building experience. 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!

"Larry was very knowledgeable - saved us a bunch of money - and his team was first rate....HIGHLY RECOMMENDED!!"

Steve T on July 2025

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of construction management and home improvement services that are customizable to each individual project. We specialize in custom home building, additions to existing structures and a variety of remodels and major renovations but also offer a wide range of expertise for a variety of other projects utilizing a combined 40 years of commercial and residential building experience. 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!

"Larry was very knowledgeable - saved us a bunch of money - and his team was first rate....HIGHLY RECOMMENDED!!"

Steve T on July 2025


Avatar for Ardent Restoration, Inc.

Ardent Restoration, Inc.

4.00(
6
)
Approved Pro

Ardent Restoration, Inc.

4.00(
6
)
Approved Pro
Customers say: Quality work
16 years of experience
Emergency services offered

Ardent Restoration 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.

"Costumer service was OUTSTANDING! I hope I never need their services again, but I would call them back immediately if the situation calls for it."

Frank M on August 2016

Ardent Restoration 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.

"Costumer service was OUTSTANDING! I hope I never need their services again, but I would call them back immediately if the situation calls for it."

Frank M on August 2016


Avatar for Kendall Developments, Inc.

Kendall Developments, Inc.

3.79(
13
)
Approved Pro

Kendall Developments, Inc.

3.79(
13
)
Approved Pro
Customers say: Terrific value
27 years of experience
Free onsite estimate

Kendall Developments, Inc has the knowledge and expertise for all of your home building and home improvement needs. We are committed to excellence in every aspect of the 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. With over 18 years of experience, accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are mindful of our customer interest and make their concerns the basis of our business. We make sure to develop a lasting relationship so that the next time a project is needed there will be no question on who to call. We look forward to earning your business!

"Saw this guy driving on the highway with some serious road rage. Purposely swerving into another car and blocking them when they tried to pass. I wouldn't hire someone who loses their head that easily"

Dave K on March 2024

Kendall Developments, Inc has the knowledge and expertise for all of your home building and home improvement needs. We are committed to excellence in every aspect of the 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. With over 18 years of experience, accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are mindful of our customer interest and make their concerns the basis of our business. We make sure to develop a lasting relationship so that the next time a project is needed there will be no question on who to call. We look forward to earning your business!

"Saw this guy driving on the highway with some serious road rage. Purposely swerving into another car and blocking them when they tried to pass. I wouldn't hire someone who loses their head that easily"

Dave K on March 2024


Avatar for Buildmax

Buildmax

4.75(
2
)
Approved Pro

Buildmax

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 Van Heart Services, LLC

Van Heart Services, LLC

5.00(
4
)
Approved Pro

Van Heart Services, LLC

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Van Heart Services LLC 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.

"Great guys and did quality work Highly recommended"

Frank S on November 2022

Van Heart Services LLC 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.

"Great guys and did quality work Highly recommended"

Frank S on November 2022


Highlake Construction Corp

5.00(
6
)
Approved Pro

Highlake Construction Corp

5.00(
6
)
Approved Pro
11 years of experience
Free onsite estimate

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

"Great communication, job completed on time and looks great. "

Rich Z on November 2025

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

"Great communication, job completed on time and looks great. "

Rich Z on November 2025


Avatar for DemoWorks

DemoWorks

4.75(
18
)
Approved Pro

DemoWorks

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 Don Lorenc construction services, Inc.

Don Lorenc construction services, Inc.

4.79(
29
)
Approved Pro

Don Lorenc construction services, Inc.

4.79(
29
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
37 local quotes requested

Kitchen/Bath/Basement Remodeling Specialist. We don't offer small repair or handyman projects. We have over 25 years' experience with residential projects. We hold general contractor licenses for Chicago, Evanston, Highland Park and other Illinois areas. With a skilled workforce covered by full Workers' Compensation and Liability insurance, we're ready to begin work on your residential or commercial construction and remodel or renovation project as soon as you need us. During our over 30 years in business, we have worked as a general contractor for new housing developers as well as individual homeowners and investors to take care of a broad variety of construction needs. Our past projects have involved everything from small painting projects and rehabilitation work to room additions and full house remodels.

"We can not speak highly enough about our experience with Don Lorenc Construction. He and his crew are incredibly professional and clearly experts in their field. Everyone who works with Don is in-house, so he is able to complete work in the projected time period. They are immediately responsive to every question and request. From the initial planning to the final construction, they guided us and walked us through every step. The final product is beautiful and exactly what we had hoped for. Working with Don was a pleasure, and we highly recommend Don Lorenc Construcrion for your next project."

Rachel C on March 2023

Kitchen/Bath/Basement Remodeling Specialist. We don't offer small repair or handyman projects. We have over 25 years' experience with residential projects. We hold general contractor licenses for Chicago, Evanston, Highland Park and other Illinois areas. With a skilled workforce covered by full Workers' Compensation and Liability insurance, we're ready to begin work on your residential or commercial construction and remodel or renovation project as soon as you need us. During our over 30 years in business, we have worked as a general contractor for new housing developers as well as individual homeowners and investors to take care of a broad variety of construction needs. Our past projects have involved everything from small painting projects and rehabilitation work to room additions and full house remodels.

"We can not speak highly enough about our experience with Don Lorenc Construction. He and his crew are incredibly professional and clearly experts in their field. Everyone who works with Don is in-house, so he is able to complete work in the projected time period. They are immediately responsive to every question and request. From the initial planning to the final construction, they guided us and walked us through every step. The final product is beautiful and exactly what we had hoped for. Working with Don was a pleasure, and we highly recommend Don Lorenc Construcrion for your next project."

Rachel C on March 2023


Avatar for Q5 Properties LLC

Q5 Properties LLC

5.00(
20
)
Approved Pro

Q5 Properties LLC

5.00(
20
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
60 local quotes requested

Q5 Properties is a Father and Son Business with over 30 years of construction/rehab experience. There is no job too big or too small that we can't handle. We specialize in custom home renovations ranging from deck building, custom kitchens, bathrooms, painting, basement finishing, exterior work, additions, windows, doors, to full gut rehabs. We strive to deliver the best quality work at a fair price to our customers putting their designs into reality. We look forward to learning about your new project and giving you a free competitive estimate! Also follow us on Instagram to see our current and past projects @Q5Properties.

"We had some unexpected water damage and were lucky to find this amazing father-and-sons team. From the first call, they were friendly, honest, and professional. Their quote was fair and they came up with creative solutions for our basement issues. They showed up on time every day, and even finished the job earlier than expected. You can tell they really care about their work and their customers — they treated our home like it was their own. I’d absolutely recommend them to anyone!"

Rodney C on November 2025

Q5 Properties is a Father and Son Business with over 30 years of construction/rehab experience. There is no job too big or too small that we can't handle. We specialize in custom home renovations ranging from deck building, custom kitchens, bathrooms, painting, basement finishing, exterior work, additions, windows, doors, to full gut rehabs. We strive to deliver the best quality work at a fair price to our customers putting their designs into reality. We look forward to learning about your new project and giving you a free competitive estimate! Also follow us on Instagram to see our current and past projects @Q5Properties.

"We had some unexpected water damage and were lucky to find this amazing father-and-sons team. From the first call, they were friendly, honest, and professional. Their quote was fair and they came up with creative solutions for our basement issues. They showed up on time every day, and even finished the job earlier than expected. You can tell they really care about their work and their customers — they treated our home like it was their own. I’d absolutely recommend them to anyone!"

Rodney C on November 2025


Avatar for Bath & Kitchen Experts

Bath & Kitchen Experts

4.97(
119
)
Approved Pro

Bath & Kitchen Experts

4.97(
119
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
47 local quotes requested

With over 20 years of experience, Bath and Kitchen Experts specializes in bathroom remodeling and kitchen remodeling. Bath and Kitchen Experts has been transforming homes for decades and has earned the reputation as one of the best in the industry as reflected by our Angie's List Best in Service starting 2012 through 2019 awards. Our mission is to provide our clients with excellent and value-laden bathroom remodeling and kitchen remodeling to enhance their home’s aesthetics and functionality. Our team works relentlessly to satisfy our customers with our standards of quality, ethics and integrity. We aspire to develop a long-term relationship with the customer and guide them at each stage. Set-up a showroom appointment with us to check out the latest range of showers, bathtubs, bathroom and kitchen cabinets, lighting options, flooring samples, fittings and fixtures. You will surely be able to find something that will fit well in your budget and match your taste. The focus of my company is customer satisfaction. We have worked hard to satisfy our customers by providing them with both beautiful and functional kitchen remodeling and bathroom remodeling designs as well as flawless construction. For us, the project is complete only if we are able to bring a smile to the face of our satisfied clients. Call 224.404.0151 or email us at Paul@BathAndKitchenExperts.com.

"Had a smooth and stress-free bathroom renovation thanks to a very professional team. They handled plumbing, tiling, and installation with expertise and an eye for detail. The final look is clean, modern, and exactly what I hoped for. I?m extremely pleased with their service."

Edward R on November 2025

With over 20 years of experience, Bath and Kitchen Experts specializes in bathroom remodeling and kitchen remodeling. Bath and Kitchen Experts has been transforming homes for decades and has earned the reputation as one of the best in the industry as reflected by our Angie's List Best in Service starting 2012 through 2019 awards. Our mission is to provide our clients with excellent and value-laden bathroom remodeling and kitchen remodeling to enhance their home’s aesthetics and functionality. Our team works relentlessly to satisfy our customers with our standards of quality, ethics and integrity. We aspire to develop a long-term relationship with the customer and guide them at each stage. Set-up a showroom appointment with us to check out the latest range of showers, bathtubs, bathroom and kitchen cabinets, lighting options, flooring samples, fittings and fixtures. You will surely be able to find something that will fit well in your budget and match your taste. The focus of my company is customer satisfaction. We have worked hard to satisfy our customers by providing them with both beautiful and functional kitchen remodeling and bathroom remodeling designs as well as flawless construction. For us, the project is complete only if we are able to bring a smile to the face of our satisfied clients. Call 224.404.0151 or email us at Paul@BathAndKitchenExperts.com.

"Had a smooth and stress-free bathroom renovation thanks to a very professional team. They handled plumbing, tiling, and installation with expertise and an eye for detail. The final look is clean, modern, and exactly what I hoped for. I?m extremely pleased with their service."

Edward R on November 2025

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