There is no single number, but published data gives a frame. New homes sold in the Midwest averaged about $443,000 to $448,000 in 2026, and nationally, construction makes up about 64 percent of a new home’s price. On your own lot, the total depends on size and finishes, plus site work: well and septic, or city water and sewer tap fees.
Building on your own land splits the cost into pieces most people do not see when they buy a finished house. Here is what each piece is, with published figures for Central Ohio where they exist.
Where the Money Goes in a New Home
National averages from the National Association of Home Builders’ 2024 Cost of Constructing a Home survey.
| Share of the sales price | National average |
|---|---|
| Construction cost | 64.4% |
| Finished lot | 13.7% |
| Builder profit | 11.0% |
| Average construction cost | $428,215 |
| Average sales price | $665,298 |
Site Costs on Your Lot in Central Ohio
Published fees for connecting a new home. Check your own utility and health department for current figures.
| Item | Published fee |
|---|---|
| Fairfield County septic site review | $250 |
| Fairfield County new septic system permit | $600, plus $65 operation and maintenance fee |
| Fairfield County private well permit | $475 |
| City of Lancaster sewer capacity fee, single-family | $5,789 inside the city, $8,684 outside, plus $25 tap |
| City of Columbus sewer capacity charge, 3/4-inch tap | $3,892 from April 1, 2026 |
What Moves the Price Most
These are the decisions that separate a modest custom home from an expensive one.
Before You Price a Custom Home
- Confirm the lot can be built on: zoning, setbacks, floodplain and lot-split approval if the land is being divided
- Find out whether the lot has public water and sewer, or needs a well and septic system
- Get a septic site review early on rural land, since soil decides the system and its cost
- Decide on size, number of bedrooms and baths, and basement or not
- Set a budget range and a list of must-haves before plans are drawn
Building in the Country vs. in Town
A rural lot in Fairfield or Hocking County often costs less to buy but more to prepare: a well, a septic system, a long driveway and power run in. A lot on city water and sewer skips those but carries capacity and tap fees, and may come with design rules.
Building outside city limits: Fairfield County Permit Guide →
Questions, Answered
How much does it cost to build a house in Ohio in 2026?
New homes sold in the Midwest averaged between $442,800 and $448,200 in the first three quarters of 2026, according to Census data. Building on your own lot can come in above or below that, depending on size, finishes and site work.
Source: Census, Average Sales Price of New Homes, Midwest (FRED) →
What share of a new home’s cost is construction?
About 64 percent nationally, the highest share NAHB has recorded. The finished lot was about 14 percent and builder profit about 11 percent in the 2024 survey.
How much does a septic system permit cost in Fairfield County?
As of October 2025, the Fairfield Department of Health lists $250 for a site review, $600 for a new or replacement septic installation permit plus a $65 operation and maintenance fee, and $475 for a private well permit. The system itself costs far more than the permits.
Is it cheaper to build or buy a house in Central Ohio?
Often it costs more to build than to buy a comparable existing home, because new construction carries today’s material and labor prices. People build to get the layout, lot and quality they want, and a house with nothing old in it.
Thinking about building on your land?
See the new homes and workshops we have built, with real project photos and reviews, on our New Build Homes page, or request a free written estimate.