Welcome to
Koch Construction
5-Year warranty on new construction
2-Year warranty on remodels
Free estimates
Small enough to listen, Big enough to deliver
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We're a Custom Home Builder in Olathe, KS.
We're a family-owned construction company built around high-end residential and commercial work, and we take on projects with that standard in mind every time.
Our services cover a wide range of builds: custom homes, barndominiums, basement finishing, home additions, deck and outdoor living construction, general contracting, and septic systems.
We operate out of Olathe and serve Johnson County and the Greater Kansas City metro, including Overland Park, Lenexa, Gardner, Spring Hill, Shawnee, Leawood, De Soto, and the communities surrounding them.

Family-Owned and Operated
Class A General Contractor
Fully Licensed and Insured
Free Estimates
2-Year Remodeling Warranty
5-Year Warranty on New Construction

Your family deserves a home built around how you actually live, not a floor plan pulled from a catalog.
As a family-owned custom home builder serving Johnson County, we have helped families throughout Olathe, Overland Park, and Leawood bring their vision to life.
We manage every phase from your first design conversation through final walkthrough. One team, one point of contact, zero surprises.
You get a home built exactly the way you want it, from a builder who knows this community and has the reputation to prove it.

Barndominiums have become one of the most requested builds in Johnson County, and it is easy to see why. You get the structural flexibility and character of a post-frame build with all the comfort and finish quality of a custom home.
We build barndominiums with full residential living space and finished interiors, held to the same standard as every custom home we construct. If you have a vision for how you want to live, we know how to build it.


A finished basement is one of the highest-return investments a Johnson County homeowner can make. More usable space, more home value, more room for how your family actually lives.
Whether you want a home theater, guest suite, home gym, or wet bar, we hold our basement work to the same standard as our new construction builds. One team, the same craftsmanship, results that feel like they were always part of the home.

When you love your location but need more space, a well-built addition is the smarter move. No uprooting your family, no compromising on where you live.
We plan and build master suite additions, garage conversions, and multi-room expansions throughout Olathe, Overland Park, and the broader Johnson County area. Same team, same standards, more home.


As a licensed general contractor serving Johnson County, we handle full-scope residential and commercial construction from start to finish.
That means we coordinate every subcontractor, every schedule, and every detail so nothing falls through the cracks and your project stays on track and on budget.
Whether you are building new, expanding, or taking on a large-scale renovation, you get a single experienced team managing the entire process. No gaps, no hand-offs, no surprises. Just a finished project that meets your timeline, your budget, and your standards.

When a project is large, complex, or multi-phase, the construction company you choose makes all the difference. Coordination breakdowns, scheduling gaps, and subcontractor mismanagement are where builds go over budget and behind schedule.
As a locally owned construction company with deep roots in Johnson County, we bring the established relationships, regional knowledge, and hands-on management that complex builds demand.
Our subcontractor network is proven, our processes are tight, and our commitment to this community means your project reflects on us as much as it does on you. We treat every build that way.


Koch Construction builds homes and commercial spaces across the Kansas City Metro. Since 2013, our team has delivered durable structures with strong workmanship and careful attention to detail.
We're a locally owned, family-run construction company. Our crew brings more than a decade of hands-on building experience to every project. We understand local building codes, permits, and the needs of property owners across the region.
Our team handles the process from planning to completion. We help with permits, provide free estimates, and keep communication clear during the build.
If you plan a residential or commercial project in the Kansas City Metro, contact Koch Construction to discuss your project and schedule an estimate.
Monday - Friday: 8am - 5pm
Saturday & Sunday: Closed
Koch Construction proudly serves homeowners and property owners throughout the Kansas City metropolitan area. Our team regularly works in Olathe, Overland Park, Lenexa, Leawood, Shawnee, Gardner, and Spring Hill, along with nearby communities throughout Johnson County and the greater KC metro.
We also serve select areas on the Missouri side, including Kansas City, Belton, and Grandview. Wherever your project is located in the KC area, Koch Construction is ready to deliver reliable craftsmanship and professional service.
Olathe, KS
Overland Park, KS
Lenexa, KS
Stilwell, KS
New Century, KS
Leawood, KS
Gardner, KS
Spring Hill, KS
Shawnee Mission, KS
Bucyrus, KS
Kansas City, MO
Shawnee, KS
Prairie Village, KS
Mission, KS
De Soto, KS
Hillsdale, KS
Belton, MO
Grandview, MO
Clearview City, KS
Edgerton, KS
Edwardsville, KS
Kansas City, KS
Bonner Springs, KS
Cleveland, MO
A custom home is a traditional house built to your exact specifications. A barndominium combines living space with a barn or workshop-style structure, offering open floor plans, durability, and a unique look. At Koch Construction, we excel as both custom home and barndominium builders. We're ready to help you build the home that best fits your lifestyle; contact us today to get started!
As experienced custom home builders, we offer full design services and can work with you to either create a home from scratch or customize existing plans to suit your needs.
Build times can vary, but typically range from 6 to 12 months, in our experience, depending on size, complexity, and weather conditions. To learn more about working with our custom home builders, give our team a call today!
Our custom home and barndominium builders serve a wide range of areas throughout Kansas. Contact us with your location, and we'll confirm availability in your region.
Zoning and building codes vary by location. Our barndominium builders will help you check local regulations to ensure your project is feasible.
We can connect you with lenders experienced in construction and barndominium loans, including conventional, FHA, and USDA options. Did you know that, according to Realtor.com, when faced with repairs needed for older homes, 80% of homeowners will end up paying out-of-pocket? Keep this in mind as you decide whether to build new or purchase an existing home. When you work with our custom home builders, you'll get a brand new home built for your lifestyle! Contact us today to learn more.
Absolutely! Our custom home and barndominium builders work with you to choose everything from flooring and countertops to windows and roofing to match your style and budget.
We offer full turnkey services, from planning and permitting to final walk-through, so you can move in with ease. That's just part of the reason local residents love working with our custom home builders.
Costs depend on size, materials, and design. On average, they start at $200/sq ft, in our experience. To learn more about getting started with our custom home builders, contact our team today.
Yes, when you work with our custom home builders, you can rest assured that all of our homes and barndominiums come with a builder warranty covering structural elements and workmanship for added peace of mind.
Small enough to listen, Big enough to deliver
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