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Top-Rated Home builders in Olney - Updated Nov 2026

Agape Construction & Improvement
4.0(
60
)
Shelter or Outbuilding - Build

Serving Olney, IL and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I called the company to have them come and look at some shingles that were not laying correctly.  Prior to their arrival, my daughter backed one of our vehicles into the side of the garage while pulling out, bending the track for the garage door and damaging the side of the garage (broke the 2x4, split the sheeting, etc.).  Mike came out on a holiday because I am in the process of selling my home and needed to have the repairs made ASAP.  He completed not only the roof repair, but replaced the side of the garage and straightened the garage door track.,  And, he cleaned up the garage when he was done.  This company has been extremely responsive and Mike genuinely cares about his customers.  He is friendly and caring and has been a pleasure to work with.  Because of him, I think my house is sold and the family buying it is happy with the repairs completed."
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the home owners are very happy!
all done!!

+1

Recommended by90%of homeowners
Avatar for American Custom Homes
American Custom Homes
5.0(
3
)
Find a Custom Home BuilderFind a Modular Home BuilderShelter or Outbuilding - Build

Serving Olney, IL and surrounding areas

In business since 2000

Emergency services offered

Credit card accepted

"I would like to start off with precise, warm welcome and highly responsible of what they are doing. They really know what they are doing and from start from start to end it has been a great project with new experiences and great craftsmanship. Thanks again guys and i hope to have more work for you soon...
"
Stone Travertine
12x6 Travertine hand cut
Complete Steamer
Recommended by100%of homeowners
Avatar for GGR Construction LLC
GGR Construction LLC
5.0(
3
)
Find a Custom Home BuilderFind a Modular Home BuilderShelter or Outbuilding - Build

Serving Olney, IL and surrounding areas

In business since 2022

Free estimates

"GGR Construction was very prompt not only in their bidding but also with their work. They provided exceptional communication throughout the entire project up to completion. Their workmanship was excellent and they are professional. We would highly recommend them to anyone."
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+37

Recommended by100%of homeowners
Avatar for Sentri Homes
Sentri Homes
2.7(
61
)
Find a Custom Home Builder

Serving Olney, IL and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"I was very impressed with Sentri Homes - their customer service was excellent. They sent a subcontractor to install some vinyl laminate in my bathroom and he ended up getting glue all over the carpet in our bedroom. The sub ended up ghosting both me and Sentri, leaving me stuck with a ruined carpet. Sentri stuck with me for over a month to get the carpet replaced with the identical original and to get the vinyl job 100% completed. The carpet was a Home Depot exclusive and Sentri handled everything with them. I will be using Sentri for a much bigger renovation I have coming up soon, because I know that they will make sure everything gets done right no matter what problems come up. The vinyl looks great too."
11 neighbors recently requested a quote
GT Custom Builders
New to Angi
Find a Custom Home Builder

Serving Olney, IL and surrounding areas

In business since 2018

Free estimates

Credit card accepted

We're 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 General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. 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! \n

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Home Building 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.

While it’s never too early to start planning for a major home improvement project like a home addition, give yourself at least a month or two to plan and design your addition, find a contractor, and get the permits in order. For larger projects like a second-story addition that require designing with an architect, plan on three to four months of preparation.

Whether it’s more affordable to gut a house than build a new one depends on the markets where you'd be buying and selling. However, it’s usually less expensive to renovate a home than to build new construction. 

Most homeowners pay between $100,000 and $200,000 for demolition and remodeling costs, whereas the average cost to build a new home is between $139,000 and $531,300.

Modular homes are a type of prefab home. Specifically, manufacturers first build modular homes in sections and then deliver them to the job site. The modules, or sections, are usually at least 70% finished before they arrive on your property.

In comparison, prefab homes arrive in panels or segments, and workers assemble them on-site. Generally speaking, modular homes tend to be more durable, and their consistent construction standards may mean you’ll have an easier time getting conventional home loans.

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.

The Olney, IL homeowners’ guide to home building services

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