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    Average homeowner rating
  • Verified reviews icon25
    Verified custom home building reviews

Top-Rated Custom home builders in O Fallon - Updated Nov 2026

Good Neighbors LLC
4.3(
89
)
Find a Custom Home Builder

Serving O Fallon, IL and surrounding areas

In business since 1999

Free estimates

"Our kitchen was ugly and barely working.   We went to Angie's List and hired Good Neighbors, LLC for a previous job and we hired them again and they gave us an outstanding kitchen remodel.
Good Neighbors had previously done a master bath remodel for us in 2012, which we love!  So when it came time to update and remodel our outdated 30 year old kitchen, we again hired Good Neighbors to do the kitchen remodel.  
They gave us a price, they gave us a finish date and they finished within budget and they finished on time.  Impressive!
Our kitchen was a complete demolish from the ceiling to the floor.  We installed new cabinets, new appliances, new lights, granite counter tops and updated the electrical service and the plumbing.   We did a lot. 
Our kitchen, as with many older home remodels came with several surprises once the work started.   However, Good Neighbors was able to handle the required fixes flawlessly and perfectly.  Most importantly, we are thrilled with the end result.  Even the building insectors complimented their work.
One point worth mentioning, which we really appreciated, was the fact that the Good Neighbors personnel, Tom, Chris and Caleb showed up on time, worked hard all day and cleaned up every night.  They never let us down, never left us hanging nor left us a mess to clean up.
The finished kitchen is even better than we had imangined.   Good Neighbors is worth of a glowing recommendation from us and we recommend them for any interior remodel and proudly give them an A."
Recommended by94%of homeowners
Avatar for Sears Home Improvement Products
Sears Home Improvement Products
3.7(
1,712
)
Find a Custom Home Builder

Serving O Fallon, IL and surrounding areas

In business since 1886

Free estimates

Credit card accepted

"Sears Home Improvement Products have washers and fittings to repair washing machines and such. The staff seem real knowledgeable and they were friendly with my son when my son was asking the sort of questions he asks everyone! The pricing is reasonable."
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Recommended by74%of homeowners
Miller Home Improvement
4.4(
15
)
Find a Custom Home Builder

Serving O Fallon, IL and surrounding areas

In business since 1993

Free estimates

"Fantastic ! Dan and his crew did an absolute professional job on my home. Work was excellent and completed ahead of schedule. His price was very competitive. They used the highest quality materials to ensure it lasted. I've used Miller Home Improvement on many jobs and recommended him many times. Feedback from the people I have referred him to has always been excellent. I will continue to work with them for all of my future home improvements."
Recommended by91%of homeowners
Avatar for Marketplace Housing
Marketplace Housing
4.3(
11
)
Find a Custom Home Builder

Serving O Fallon, IL and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Marketplace Homes has managed two residential rental properties for me, and everything has always been very easy. They coordinate showings, negotiated rent with tenants, and hired contractors as needed at each property. I would use them for any rental property I have in the future!"
Recommended by77%of homeowners
Avatar for Modern Marvels Construction
Modern Marvels Construction
4.8(
12
)
Find a Custom Home Builder

Serving O Fallon, IL and surrounding areas

In business since 2013

Free estimates

Credit card accepted

"My home is currently under construction and has been going on a whole lot longer than it should have because of the contractor hired to do the job. Chris with Modern Marvels was recommended to me by a friend so i gave him a call to paint the exterior of my home. Him and his guys showed up quickly, were very clean and his pricing was definitely more affordable than i expected. i asked him to then drywall my home and paint it as well, it took him 2 weeks to get done more than the current contractor has in 6 months. im actually going to continue using Chris and his guys for most all other jobs i have left."
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Recommended by90%of homeowners
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Custom Home Builders FAQs, answered by experts

Buying a house is easier than building one from scratch. Buying an existing home is almost always faster, even if you need to make renovations once you move in. When you hire the right team to build a home, they will simplify the design and build phases so that there is little guesswork throughout the process, but building new construction will almost always take longer than buying an existing home.

Above all, the downside to building a new house is a longer timeline. You need several months to finish the build, depending on the supply chain and labor availability in the meantime. Building a home compared to buying one is also more expensive, both in the building process and when it comes to mortgage rates and property taxes.

A green home is one that focuses on conservation, with the goal often being net-zero carbon emissions and self-sustainability. It will often include some kind of self-generation equipment, like solar panels or a small wind turbine, high-efficiency electrical components and mechanicals, and high-quality insulation and air sealing to reduce the loss of conditioned air. Many green homes also include xeriscaping or rainwater collection to cut down on drainage and water consumption.

In most cases, you should get an architect before you hire a builder. An architect will be the one to draw up formal plans for your project, including guidelines and even material lists for your builder to follow during construction. Many architects can even help you find builders, choose one for your project, and negotiate prices. Some are also willing to act as project managers throughout the process, working closely with a builder from start to finish.

Building a new home can be more expensive than buying an existing one, depending on the housing market in your area. Many homeowners still find that building a new house is worth the investment as they can choose the exact layout they want, as well as to choose their own floors, wall coverings, appliances, and finishes. If you live close enough to the build site, you can also stop by to check on the builder’s progress, which can provide some peace of mind that the project is worth it.

The O Fallon, IL homeowners’ guide to custom home building

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