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Addition to existing structure builders in Algonquin

Avatar for Kendall Developments, Inc.
Kendall Developments, Inc.
35922 128th Street
3.79(
13
)
Approved Pro
Kendall Developments, Inc.
35922 128th Street
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


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 Ardent Restoration, Inc.
Ardent Restoration, Inc.
PO Box 804
4.00(
6
)
Approved Pro
Ardent Restoration, Inc.
PO Box 804
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 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.


Avatar for DB3 CONSULTING SERVICES LLC
DB3 CONSULTING SERVICES LLC
1156 Overhill Ct
New on HomeAdvisorNew on Angi
Approved Pro
DB3 CONSULTING SERVICES LLC
1156 Overhill Ct
New on AngiNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

Tired of overpriced firms or no-show handymen? Your home is your life. Not just the next jobsite or work order. When it needs fixing or upgrading, you shouldn't have to choose between them.  Not every project needs a crew of 20. And not every job should be DIY. As a veteran-owned company, we take pride in getting the job done the right way the first time. Whether it's storm-repair siding, a fresh bath facelift, or that "I'll get to it later" room, we finish on schedule and on budget. No shortcuts, no excuses. Your home deserves more than a contractor. It deserves a partner.  Let's get that next project off your list.

Tired of overpriced firms or no-show handymen? Your home is your life. Not just the next jobsite or work order. When it needs fixing or upgrading, you shouldn't have to choose between them.  Not every project needs a crew of 20. And not every job should be DIY. As a veteran-owned company, we take pride in getting the job done the right way the first time. Whether it's storm-repair siding, a fresh bath facelift, or that "I'll get to it later" room, we finish on schedule and on budget. No shortcuts, no excuses. Your home deserves more than a contractor. It deserves a partner.  Let's get that next project off your list.


LCF Consulting
1821 Torrey Pkwy
4.50(
8
)
Approved Pro
LCF Consulting
1821 Torrey Pkwy
4.50(
8
)
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!

"Everything started out fine but after a while no workers showed and the project was never finished"

Homeowner on March 2022

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!

"Everything started out fine but after a while no workers showed and the project was never finished"

Homeowner on March 2022


Avatar for Daniel Henry Builders, Inc.
Daniel Henry Builders, Inc.
6040 South Meade
5.00(
27
)
Approved Pro
Daniel Henry Builders, Inc.
6040 South Meade
5.00(
27
)
Approved Pro
Customers say: Quality work
28 years of experience
Free onsite estimate

At Daniel Henry Builders, Inc., we are a family owned and operated business. We started this business in 1997 and our company's specialties range from building to additions to remodeling. We are an experienced custom home builder, modular home builder as well and we offer everything you may need for your kitchen, bath, or basement remodel, from simple installation to detailed design. Please give us a call and thank you for doing so.

"No comments."

Jamie L on April 2020

At Daniel Henry Builders, Inc., we are a family owned and operated business. We started this business in 1997 and our company's specialties range from building to additions to remodeling. We are an experienced custom home builder, modular home builder as well and we offer everything you may need for your kitchen, bath, or basement remodel, from simple installation to detailed design. Please give us a call and thank you for doing so.

"No comments."

Jamie L on April 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 Van Heart Services, LLC
Van Heart Services, LLC
3414 Raycraft Rd.
5.00(
4
)
Approved Pro
Van Heart Services, LLC
3414 Raycraft Rd.
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 local quotes requested

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


The Civic Architectural Group, Inc.
15751 South Ravinia Avenue, Unit 1N
4.88(
12
)
Approved Pro
The Civic Architectural Group, Inc.
15751 South Ravinia Avenue, Unit 1N
4.88(
12
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We bring old-world, quality craftsmanship to every unique project we take on. We specialize in a variety of major home improvement projects to include additions, kitchen and bathroom remodels, major renovations and home repairs. We work efficiently with our resources to ensure your project is completed on time and on budget. We’re licensed and insured & look forward to building strong, long-lasting relationships with our clients and guarantee your satisfaction.

"Communication was excellent. They provided me with all the information I needed to understand the details of project. In addition, they responded promptly to all of my questions"

Ganiyu S on August 2024

We bring old-world, quality craftsmanship to every unique project we take on. We specialize in a variety of major home improvement projects to include additions, kitchen and bathroom remodels, major renovations and home repairs. We work efficiently with our resources to ensure your project is completed on time and on budget. We’re licensed and insured & look forward to building strong, long-lasting relationships with our clients and guarantee your satisfaction.

"Communication was excellent. They provided me with all the information I needed to understand the details of project. In addition, they responded promptly to all of my questions"

Ganiyu S on August 2024

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

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

An in-law suite is a self-contained living space attached to—or detached from—your main home. Expect a bedroom, full bath, and a kitchenette or compact living area. The setup gives relatives privacy, doubles as a potential rental, and can lift your property value. To qualify as a legal dwelling, the suite must meet local building codes and zoning rules.

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.
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.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
small bathroom that has been updated in a remodel
Apr 29, 2025
Apr 29, 2025
Budget for the cost to remodel a small bathroom based on factors such as required fixtures, bathroom size, labor, remodel type, site prep, and more.
guest house in the backyard
Apr 27, 2025
Apr 27, 2025
Need to build a guest house? Here’s how much it costs, what factors affect cost, and what to expect.
Share project details to get started.