A dated starting point, with clear limits
A March 25, 2026 cost article from Oak & Gable Homes gives a Johnson County custom-house indication of $200–$300 or more per square foot, excluding land. At 2,500 square feet, that implies approximately $500,000–$750,000 or more for the house under that builder’s assumptions. This is one builder’s published guidance, not a survey, bid or metro average.
The source does not establish comparable semi-custom or luxury bands. We leave those figures unverified rather than imply that an expensive listing price equals a construction cost.
| Project type | Published indication | How to use it |
|---|---|---|
| Semi-custom | Not yet independently established | Request a base plan, options list and site allowance. |
| Custom | 200–300+ dollars per square foot; land excluded | Single-builder Johnson County example dated March 25, 2026. |
| Luxury custom | No verified upper or lower band | Price the exact design, structural system and finish schedule. |
Build one complete project budget
A square-foot number becomes useful only after the builder defines the area denominator and included work. Heated living area, unfinished basement area, garages and covered outdoor space can be treated differently. Ask for a room-by-room area schedule and a list of exclusions.
Start with the house estimate, then add the parcel and closing costs, site preparation, utilities, design and engineering, permits, financing costs and an agreed contingency. Avoid counting a component twice if it is already included in the builder’s price.
- Ask whether demolition, rock excavation and unsuitable-soil removal are included.
- Identify utility connection costs and any well or septic work.
- Separate finish allowances from fixed specifications.
- List landscaping, driveway, retaining walls and outdoor structures individually.
Land: use parcel evidence, not a county average
The eight-county directory does not yet have a verified land-sale dataset. No county lot-price range is presented as established fact. A small serviced subdivision lot, an infill teardown and an acreage parcel can carry very different development costs even at the same purchase price.
| County group | Evidence available here | Next comparison |
|---|---|---|
| Johnson, Wyandotte, Miami, Leavenworth (KS) | No verified lot-price band | Obtain recent comparable sales and written servicing costs. |
| Jackson, Clay, Platte, Cass (MO) | No verified lot-price band | Check access, grading, utilities and applicable restrictions for each parcel. |
What changes the price
A difficult site can absorb money before the visible house begins. Slope, drainage, access, utility distance and foundation design deserve early attention. After that, structural complexity, glazing, mechanical systems, cabinetry and the number of custom details can change both labor and material costs.
NAHB’s January 2025 study of 2024 construction provides national context. It is not a Kansas City price list, and its cost shares should not be used to manufacture a local quote. A recent, comparable project from each bidder is more useful for your decision.
Make estimates comparable
Give every builder the same drawings, finish schedule, site information and target completion window. Ask each to identify allowances, exclusions, escalation terms and the point at which its price becomes binding.
Keep the original estimate and every change order together. A lower opening price may represent fewer included items; a higher price may represent a different design rather than a higher margin. Have an appropriate adviser review financial or contractual commitments before you sign.
Sources & dates
- Oak & Gable Homes: Johnson County cost article, March 25, 2026 · checked 2026-10-27
- NAHB: Cost of Constructing a Home 2024, January 2025 · checked 2026-10-27
Questions or factual corrections: editor@homebuilderbenchmark.com.