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TRUSTED BY MOUNT PROSPECT, IL HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon79
    Verified custom home building reviews

Top-Rated Custom home builders in Mount Prospect - Updated Nov 2026

Avatar for The James Construction Group Inc
The James Construction Group Inc
5.0(
13
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 2005

Warranties offered

Customers say: True professional

"We are very pleased with the workmanship and professionalism of The James Construction Group. The plans for the kitchen included many custom elements, a number of which required creative solutions. Overall, although there were some delays related to a wait for materials, the work moved right along. The quality of the work was excellent."
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+79

13 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Icon Building Group
Icon Building Group
5.0(
15
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"When I was looking for a custom home builder, I wanted someone I could trust to provide quality work and guide me through the process. I’m so glad I found Icon Building Group. Their team was professional, knowledgeable, responsive, and great to work with from start to finish. Their attention to detail and quality of craftsmanship really stood out. I would definitely recommend Icon Building Group to anyone looking for a reliable and experienced custom home builder."
Kitchen BEFORE
Kitchen BEFORE
Powder Room BEFORE
Living Room BEFORE
Loft BEFORE

+25

A P Builder & General Contractor LLC
4.1(
98
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

Approved

Warranties offered

Customers say: Super punctual

"I can't say enough about A P Builders and how absolutely wonderful they have been from start to finish. We completely gutted and remodeled our home and Angelo was upfront, honest, timely, and everything that was contracted was done to perfection. We had crew there every day from start to finish. He started on time and finished on time. Any change orders were handled professionally and solutions were found for any unforeseen challenges due to the age of my home. I highly recommend AP Builders for any of your home improvement needs."
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+16

Response time5 days
Response rate99%
3 neighbors recently requested a quote
Avatar for JCB International
JCB International
5.0(
2
)
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Serving Mount Prospect, IL and surrounding areas

Approved

In business since 1999

Free estimates

Customers say: Quick response

With over 15 years of experience serving Prospect Heights and the surrounding areas, JCB International, is your solution for all your home & business improvement needs. We specialize in additions to existing structures, bathroom and kitchen remodels, major home repairs, major renovations and more for both home owners and business owners! We take great pride in our professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Give us a call today; we are happy to provide a free estimate and look forward to earning your business on this project and the next!

Lakeview project
Bucktown project
bucktown project
Lakeview project
Glencoe Basement

+9

Response time1 day
Recommended by100%of homeowners
The Civic Architectural Group, Inc.
5.0(
2
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 1974

Credit card accepted

Welcome to The Civic Architectural Group, Inc. where you can Expect the exceptional\n … because this is what we expect of ourselves as architects, as \nhuman beings. We recognize that each and everyone of our clients are \nindividuals with individual desires and expectations. We are passionate \nabout our services with compassion for each client: their budgets, \npersonalities, lifestyles, or business cultures are important to us. \nWe speak the loudest in the room by listening\n

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+18

1 neighbors recently requested a quote
Law Ventures, Ltd.
0.0(
1
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

Approved

In business since 2000

Free estimates

With over 10 years of experience serving the Chicago area, Law Ventures, Ltd., is your solution for all your home improvement needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed! \n \n \n \n

Recommended by100%of homeowners
Avatar for 41 North Builders
41 North Builders
4.9(
36
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

In business since 2006

"

Overall we are very satisfied with the work. It didn't take long for John to review our initial drawings and issue a quote and get the job scheduled. Between the time we scheduled the job and when work actually began we made some changes to the plans and John and his guys were able to accommodate. They also found some relatively shoddy workmanship from the builders of our townhome and did their best to point out areas that needed attention. The initial demo and framing went very well and moved quickly. After demo and framing there were times when communication wasn't the best and there were many days when work wasn't done and we weren't kept up to date on the schedule, which I understand is very typical for this type of job and not unique to John and his guys. I do wish he would have used a different electrician. He was pretty messy and rarely showed up and we still have some minor flickering with the lights in our master bedroom. The finishes are excellent and John's tile work was very good. The custom vanity they built for our master is excellent and it's fits perfectly. The shower glass is just what we wanted. Overall I was vey happy with the outcome despite some minor frustrations with the process. I would definitely call John again for other major jobs.


"
Recommended by96%of homeowners
Avatar for Thor Build Inc
Thor Build Inc
5.0(
6
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"This is my second project with Fil and Thor Build. The idea to construct a mezzanine was something that I had envisioned when I first saw my condo. I showed Fil my ideas on paper along with photos of how I wanted everything to look. Fil ran with it and brought it to fruition. Everything turned out even better than how I had envisioned. During the project, I requested some modifications which Fil gladly accommodated; he even created a custom door for me that is absolutely stunning - the quality work of artisans! To top it all off, this project was completed while I was 600 miles away. I had to rely strictly on photos and good communication. I had tons of questions during the construction phase and I'm sure I must've drove Fil crazy at times. However he was always professional and answered all of my questions and addressed any concerns that I had. I can't say enough about Thor Build, they are my go-to contractor and I am so fortunate to have found them."
Basement Remodeling
modern bath
bath1
bath 2
Kitchen

+6

Recommended by100%of homeowners
Avatar for Prestige Home Construction, INC.
Prestige Home Construction, INC.
4.9(
9
)
Find a Custom Home Builder

Serving Mount Prospect, IL and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"I loved making one phone call and having them take care of the rest!! I had my gutters, siding, and roof all replaced hassle free. I was able to pick out what I wanted from the comfort of my home. Each crew came out and finished each job in 1 day! They cleaned up very well. Which was awesome since I have 4 small kids and 2 dogs who live outside! The owners actually came out as the house was being worked on and made sure everything was going as planned!"
Recommended by100%of homeowners
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Custom Home Builders FAQs, answered by experts

Local regulations dictate how big an ADU can be, and there may also be restrictions on the percentage of the main residence’s square footage an ADU can have. In most cases, an ADU must be smaller than the main residence, but check with your local building authority to confirm restrictions on ADU size.

Yes, modular homes offer a wide range of customization options for layout, finishes, and features.

It usually takes around four to six months to build and install a modular home, although your timeline could go up to around eight months if there are delays in the manufacturing or permitting process. Heavy site preparation and foundation pouring can extend that timeline if you need them, as can customizations you want for your modular home. Your modular home company should be able to provide an estimate for the construction timeline before you sign any contracts or agree to any work.

The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They’re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they’re at less of a risk of freezing.

Start by researching local contractors with experience in cottage construction. Ask for references, check licensing and insurance, and review completed projects. Compare multiple bids, making sure each includes the same scope of work. A good contractor will communicate clearly, provide a detailed contract, and ensure all work meets code and safety standards.

The Mount Prospect, IL homeowners’ guide to custom home building

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