Top-rated custom home builders.

Best custom home builders near Union, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your custom home building project in Union, IL?

Select your specific project to find the pro for you.

TRUSTED BY UNION, IL HOMEOWNERS

  • Average homeowner rating star icon4.1
    Average homeowner rating
  • Verified reviews icon28
    Verified custom home building reviews

Top-Rated Custom home builders in Union - Updated Nov 2026

Avatar for Icon Building Group
Icon Building Group
5.0(
15
)
Find a Custom Home Builder

Serving Union, 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 Union, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Response time5 days
Response rate99%
3 neighbors recently requested a quote
Avatar for T&K Builders LLC
T&K Builders LLC
4.2(
10
)
Find a Custom Home Builder

Serving Union, IL and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"T&K Builders LLC, Terry and his Team were the ultimate professional. What was promised was delivered and more. Terry and his Team explained all the steps being performed. There was no surprise when it came to the invoice. I would hire T&K Builders LLC, Terry and his Team again and again for any of my home improvement projects - large or small."
Mall Dr Shell remodel
79 neighbors recently requested a quote
Avatar for Prestige Home Construction, INC.
Prestige Home Construction, INC.
4.9(
9
)
Find a Custom Home Builder

Serving Union, 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
Avatar for Awesome Design Contracting
Awesome Design Contracting
4.9(
14
)
Find a Custom Home Builder

Serving Union, IL and surrounding areas

In business since 2004

Emergency services offered

Credit card accepted

"Overall it went well. The only thing I would say is that initially they wanted to use a part from an entire faucet combo (cost about $168) when eventually the part could be purchased seperately for about $40.  But I asked questions and they accommodated by going pick up the part at home depot.  That was very helpful as we were able to get all the work done that day.  Jennifer was great to work with....very responsive and timely follow up.
"
Fireplace
Fireplace
Fireplace
New Construction
Middle of Construction

+47

Recommended by100%of homeowners
ORLANDO'S PAINT WORKS CORP
4.6(
40
)
Find a Custom Home Builder

Serving Union, IL and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Orlando was very responsive to email and phone calls and came out quickly for an estimate. He was very flexible with scheduling the paint job, but we had to delay because of our schedule. We hope to be able to reschedule the job in mid April. We look forward to seeing the quality of the work because the customer service is good.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

Recommended by94%of homeowners
Avatar for Mastercat Inc
Mastercat Inc
4.6(
187
)
Find a Custom Home Builder

Serving Union, IL and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"My experience was excellent.  Mastercat has been my first choice for mold remediation and bio-hazard clean-up for years.  I have hired them on many projects and I always receive courteous and responsive customer service, competitive quotes, and excellent results.  I have recommended Mastercat many times in the past.  Donny and his team are great to work with and do great work."
Additional Photos
Additional Photos
Additional Photos
Recommended by96%of homeowners
Avatar for First Choice Construction Group
First Choice Construction Group
4.2(
10
)
Find a Custom Home Builder

Serving Union, IL and surrounding areas

In business since 2007

Free estimates

Credit card accepted

"First Choice Construction Group always stands to deliver. Excellent, quality work with an unmatched presence in the marketplace. Aside from the quality work, the service was second to none. These guys are truly connectors in the community, and I would recommend them to anyone that has a need for this type of general contracting/remodeling. Tim Szatko has been an outstanding resource to not only myself, but my clients as well. Tim has always put my needs first as a customer, and helped me tackle a multitude of pain points. I would Highly recommend getting in touch with Tim, as he is truly a relationship builder, who is passionate about having an impact on his clients lives!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+49

Recommended by85%of homeowners
...
Showing 1-10 of 89
Custom Home Builders FAQs, answered by experts

The early stages of building a house are harder than the later stages; laying the foundation and framing the house are two of the most challenging steps. However, it varies for everyone. Some people have difficulty installing HVAC, plumbing, and electricity, while others find it harder to plan the house and secure the necessary permits. 

A construction-to-permanent loan is the most common type of mortgage used to finance a house teardown and rebuild. These loans include financing for construction costs and convert to a long-term mortgage once construction is complete. Check the terms of the loan closely before beginning work—there are often restrictions requiring you to use licensed contractors for all work.

Construction typically takes 3-6 months, including site preparation and assembly.

A-frame homes are on the smaller side. While there’s no set square footage amount it has to be, it will usually come in around 1,000 square feet or smaller.

The average cost to build a modular home is around $270,000, and most modular homes total between $180,000 and $360,000. Of course, this price varies significantly by location, and the price tends to follow the cost of living in the area. There are quite a few other factors at play that can affect your pricing, including the following:

  • Number of bedrooms and bathrooms

  • Site preparation, including land clearing and leveling

  • Type of foundation

  • Utility connections

  • Cost of building permits

The Union, IL homeowners’ guide to custom home building

From average costs to expert advice, get all the answers you need to get your job done.