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Find Addition to existing structure builders in Lake Forest

LCF Consulting

1821 Torrey Pkwy
4.56(
9
)
Approved Pro

LCF Consulting

1821 Torrey Pkwy
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


Great Midwest Construction, Inc.

1701 West Catalpa Lane
5.00(
3
)
Approved Pro

Great Midwest Construction, Inc.

1701 West Catalpa Lane
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

business since 2010, Great Midwest Construction, Inc works hard to bring each customer the best possible service and quality available. We look forward to working with you on your next construction project. We welcome your questions and thank you for your interest. Call us today and let us be your one stop solution for all your home improvement needs!

""

Ivica N on May 2017

business since 2010, Great Midwest Construction, Inc works hard to bring each customer the best possible service and quality available. We look forward to working with you on your next construction project. We welcome your questions and thank you for your interest. Call us today and let us be your one stop solution for all your home improvement needs!

""

Ivica N on May 2017


"They are excellent!"

Kristin M on September 2021

Welcome to REDFERN GROUP CORP We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and we are a family owned business as well. We look forward to speaking with you!

"They are excellent!"

Kristin M on September 2021


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


Macnon Builders, Inc.

1400 Patriot Blvd #102
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Macnon Builders, Inc.

1400 Patriot Blvd #102
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
38 years of experience
Free onsite estimate

Macnon Builders, is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Macnon Builders is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees, and community by building trust, treating every project with the utmost integrity, and exceeding expectations. We look forward to working with you!

Macnon Builders, is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Macnon Builders is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees, and community by building trust, treating every project with the utmost integrity, and exceeding expectations. We look forward to working with you!


Avatar for Portfolio Properties LLC

Portfolio Properties LLC

2525 Gross Point Road
5.00(
5
)
Approved Pro

Portfolio Properties LLC

2525 Gross Point Road
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
81 local quotes requested

Portfolio Properties is a Northshore based award winning homebuilder, remodeler, and licensed roofer. Our capabilities range from a kitchen and bathroom remodel to a custom home design- build. We've been in business for over 20 years offering unparalleled service, financial transparency and an unmatched warranty.

"I had the pleasure of working with John on a home remodeling project, and I cannot say enough positive things about his work. John did an incredible job transforming our home, and I would highly recommend him for any contracting or renovation needs. John was easy to talk to, always open to discussing ideas and changes, and he made sure to keep us informed throughout the entire project. His responsiveness to emails and phone calls was impressive. Whenever we had questions or concerns, John was quick to address them, which made the whole process much smoother. John was reliable and maintained a high level of professionalism throughout the project. He was proactive in finding solutions when unexpected issues arose and ensured that the project stayed on track. The initial estimate he provided was quite accurate and there were no surprises when it came to the final cost. Overall, working with John and his crew was a pleasant and stress-free experience. He delivered high-quality work and maintained professionalism throughout the project. I would not hesitate to hire him again for any future renovation or contracting needs."

Jonathan R on October 2023

Portfolio Properties is a Northshore based award winning homebuilder, remodeler, and licensed roofer. Our capabilities range from a kitchen and bathroom remodel to a custom home design- build. We've been in business for over 20 years offering unparalleled service, financial transparency and an unmatched warranty.

"I had the pleasure of working with John on a home remodeling project, and I cannot say enough positive things about his work. John did an incredible job transforming our home, and I would highly recommend him for any contracting or renovation needs. John was easy to talk to, always open to discussing ideas and changes, and he made sure to keep us informed throughout the entire project. His responsiveness to emails and phone calls was impressive. Whenever we had questions or concerns, John was quick to address them, which made the whole process much smoother. John was reliable and maintained a high level of professionalism throughout the project. He was proactive in finding solutions when unexpected issues arose and ensured that the project stayed on track. The initial estimate he provided was quite accurate and there were no surprises when it came to the final cost. Overall, working with John and his crew was a pleasant and stress-free experience. He delivered high-quality work and maintained professionalism throughout the project. I would not hesitate to hire him again for any future renovation or contracting needs."

Jonathan R on October 2023


Avatar for Hanlons Construction Inc.

Hanlons Construction Inc.

20550 Lagrange Rd
4.54(
26
)
Approved Pro

Hanlons Construction Inc.

20550 Lagrange Rd
4.54(
26
)
Approved Pro
Customers say: Quality work
37 local quotes requested
43 years of experience

SINCE 1982, HANLON'S CONSTRUCTION INC. HAS BEEN SERVING THE GREATER CHICAGOLAND AREA FOR MOR THAN 42 YEARS! New Homes / Room Additions / Kitchens / Bathrooms / Basements / Roofing / Siding / Windows / Solar Panels A+ RATING ON THE BETTER BUSINESS BUREAU 4.8 Star Rating On Angies List

"Hanlons did a phenomenal job on our replacement roof. We highly recommend them to all of our friends and family."

Ruth T on January 2025

SINCE 1982, HANLON'S CONSTRUCTION INC. HAS BEEN SERVING THE GREATER CHICAGOLAND AREA FOR MOR THAN 42 YEARS! New Homes / Room Additions / Kitchens / Bathrooms / Basements / Roofing / Siding / Windows / Solar Panels A+ RATING ON THE BETTER BUSINESS BUREAU 4.8 Star Rating On Angies List

"Hanlons did a phenomenal job on our replacement roof. We highly recommend them to all of our friends and family."

Ruth T on January 2025


Avatar for MZ Development Partners, LLC

MZ Development Partners, LLC

909 W Euclid Ave #203
5.00(
8
)
Approved Pro

MZ Development Partners, LLC

909 W Euclid Ave #203
5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
32 years of experience

MZ Development Partners, LLC is a full service general contracting firm offering the following services: -Residential Remodeling -Custom Home Building -Commercial Remodeling -Architectural Design. MZ Development Partners, LLC has over 30 years of experience coordinating all types of remodeling and building projects. We pride ourselves not only in the distinctive quality of craftsmanship, but with the long list of satisfied customers we leave behind. The service we provide at the completion of our projects is just as important as the initial sale. Contact us for a free initial design consultation.

"Bob and his crew are the best. This was a major renovation and complete re-do of a split level house that we converted to a more traditional house. 95% of our house was redone. Bob is meticulous and his subcontractors are fantastic at their crafts and very loyal to Bob for good reason. He was pretty instantaneous in his communication with me even on weekends, which we rarely bothered him in. This was a mid 6 figure job that Bob said would take 4 1/2 to 6 months. They finished in 5 1/2 months which is pretty amazing during a pandemic with major supply chain issues. Bobs bid wasnâ t the lowest, but it wasnâ t the highest of the 5 bids we received. They were pretty much on budget except for material price increases, especially lumber which was not his or the lumber yards fault. If youâ re thinking of hiring MZ Development you will not go wrong if you hire them to do whatever size project you are thinking about."

Mitch S on November 2021

MZ Development Partners, LLC is a full service general contracting firm offering the following services: -Residential Remodeling -Custom Home Building -Commercial Remodeling -Architectural Design. MZ Development Partners, LLC has over 30 years of experience coordinating all types of remodeling and building projects. We pride ourselves not only in the distinctive quality of craftsmanship, but with the long list of satisfied customers we leave behind. The service we provide at the completion of our projects is just as important as the initial sale. Contact us for a free initial design consultation.

"Bob and his crew are the best. This was a major renovation and complete re-do of a split level house that we converted to a more traditional house. 95% of our house was redone. Bob is meticulous and his subcontractors are fantastic at their crafts and very loyal to Bob for good reason. He was pretty instantaneous in his communication with me even on weekends, which we rarely bothered him in. This was a mid 6 figure job that Bob said would take 4 1/2 to 6 months. They finished in 5 1/2 months which is pretty amazing during a pandemic with major supply chain issues. Bobs bid wasnâ t the lowest, but it wasnâ t the highest of the 5 bids we received. They were pretty much on budget except for material price increases, especially lumber which was not his or the lumber yards fault. If youâ re thinking of hiring MZ Development you will not go wrong if you hire them to do whatever size project you are thinking about."

Mitch S on November 2021


Avatar for Kingdom Made Remodeling

Kingdom Made Remodeling

790 Pine Grove Ave.
5.00(
2
)
Approved Pro

Kingdom Made Remodeling

790 Pine Grove Ave.
5.00(
2
)
Approved Pro
5 years of experience
Free onsite estimate

With over 35 years of combined construction experience, we specialize in high-quality residential remodeling. From full home renovations to kitchens and bathrooms, we've handled a wide range of projects-including our own house flips-showcasing our craftsmanship, creativity, and attention to detail. We prioritize cleanliness, clear communication, and integrity in every job. Whether it's demolition, rough or finish carpentry, custom cabinetry, kitchen design, installation, or drywall-our in-house crew is equipped with the right tools, skills, and mindset to get it done right. All of our subcontractors are licensed, bonded, and insured. We're local, reliable, and quality-driven, committed to bringing your vision to life while making the process as smooth as possible.

"We were extremely pleased with the quality of work and the promptness of the completion. Kingdom Made knew my mother was coming to live with us and really worked with us to complete the job before her arrival. They really cared about the job being done perfectly for her! "

Lynn T on September 2025

With over 35 years of combined construction experience, we specialize in high-quality residential remodeling. From full home renovations to kitchens and bathrooms, we've handled a wide range of projects-including our own house flips-showcasing our craftsmanship, creativity, and attention to detail. We prioritize cleanliness, clear communication, and integrity in every job. Whether it's demolition, rough or finish carpentry, custom cabinetry, kitchen design, installation, or drywall-our in-house crew is equipped with the right tools, skills, and mindset to get it done right. All of our subcontractors are licensed, bonded, and insured. We're local, reliable, and quality-driven, committed to bringing your vision to life while making the process as smooth as possible.

"We were extremely pleased with the quality of work and the promptness of the completion. Kingdom Made knew my mother was coming to live with us and really worked with us to complete the job before her arrival. They really cared about the job being done perfectly for her! "

Lynn T on September 2025


Avatar for Don Lorenc construction services, Inc.

Don Lorenc construction services, Inc.

22826 S Krueger Rd
4.79(
29
)
Approved Pro

Don Lorenc construction services, Inc.

22826 S Krueger Rd
4.79(
29
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
46 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

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