What to Check Before You Buy Land in Clark County, Ohio
Zoning, septic, CAUV, and floodplain — the four things that decide what you can actually do with a piece of ground.
Talk to Douglas Haney & The Haney GroupPublished June 2026 · Updated June 2026 · By Douglas Haney & The Haney Group, Springfield, OH
Quick Answer
Before buying land in Clark County, Ohio, check four things: who controls zoning on the parcel (the county or a self-administering township), whether the Clark County Combined Health District has approved it for a septic system, whether it's enrolled in Current Agricultural Use Valuation (CAUV) and what converting it would cost, and whether any part of it sits in a mapped floodplain. Each one can determine what you're allowed to build.
Buying a house and buying a piece of land are different transactions wearing the same paperwork. A house tells you what it is the moment you walk through it. Raw land doesn't — what you can build, where you can build it, and what it will cost you in taxes later all depend on rules that live in county and township offices, not on the parcel itself.
We get calls every year from people who fell in love with five acres outside Springfield before finding out the back half sits in a floodplain, or that a parcel's CAUV enrollment would cost them several years of back taxes the day they broke ground on a house. None of that is a dealbreaker if you know about it before you make an offer. It only becomes a problem when you find out after closing.
That's where Douglas Haney & The Haney Group come in. Doug Haney, Lisa Ackerman, Brad Shuman, and Amanda Russell work with land buyers across Clark County and the surrounding region every year, and we've built this into a short list of what to check before you buy.
Who Controls Zoning on the Land You Want to Buy?
It depends on the township, and the answer changes who you call and what you're allowed to build. Clark County's Planning & Zoning office administers zoning for Bethel, Green, Harmony, Mad River, Madison, Moorefield, and Pleasant Townships. German, Pike, and Springfield Townships administer their own zoning independently of the county — so even land close to Springfield's city limits may fall under a different rulebook than land a few miles away.
Before you write an offer, find out which authority governs your parcel and contact that office directly about minimum lot size, setbacks, and whether accessory structures like pole barns, detached garages, or agricultural buildings need a permit. If you're not sure who to ask, reach out to our team and we'll help you find the right office before you spend money on surveys or plans.
Will the Land Support a Septic System?
If the parcel isn't on public sewer, this is usually the single biggest unknown. The Clark County Combined Health District reviews proposed building sites to confirm a parcel can support a septic system and that any planned structures keep the required distance from it. A site approval application currently costs $50, and the Ohio Administrative Code sets a minimum 10-foot isolation distance between buildings or hardscape and an on-site sewage system, with separate distances required for private water wells.
Get this review done before you close, not after. If the only buildable spot on a lot can't support a septic system sized for the house you want to build, that's worth knowing while you can still walk away or renegotiate the price.
| Improvement | Minimum Distance | From |
|---|---|---|
| Building or hardscape | 10 ft | Sewage treatment system |
| Driveway, patio, or deck | 5 ft | Private water well |
| Building | 10 ft | Private water well |
| Pond construction | 25 ft | Private water well |
| Geothermal borehole | 50 ft | Private water well |
Source: Clark County Combined Health District
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A septic site approval and a county auditor parcel report cost a fraction of what a bad assumption about buildability can cost you. We recommend ordering both before you write an offer, not after it's accepted — most sellers will give you a short due-diligence window for exactly this reason.
Is the Land Enrolled in Current Agricultural Use Valuation (CAUV)?
A lot of acreage around Clark County is enrolled in Ohio's Current Agricultural Use Valuation (CAUV) program, which taxes farmland based on its agricultural income potential instead of its market value. The savings can be significant — according to Ohio Farm Bureau, CAUV's per-acre minimum value sits at $230, and Miami silt loam (the most common soil type and the state's benchmark soil) is valued at $2,390 per acre for 2025 — compared with a statewide average market value for farmland north of $8,700 per acre.
The catch: converting CAUV land to a non-agricultural use — clearing a homesite, putting in a long driveway, building a barn that isn't used for farming — removes that portion from the program and can trigger a recoupment charge based on the tax savings the land received. Before you make an offer on enrolled acreage, ask the Clark County Auditor's office how your plans for the parcel would affect its CAUV status, and pull the parcel's current valuation and tax history through their online property search while you're at it.
| CAUV Value | Per Acre (2025) |
|---|---|
| CAUV minimum (certified conservation land) | $230 |
| Miami silt loam (state benchmark soil) | $2,390 |
| Statewide average market value (USDA) | $8,700+ |
Source: Ohio Farm Bureau
Is Any Part of the Parcel in a Floodplain?
Floodplain status can limit where you're allowed to build a house or install a septic system, and it isn't always obvious just by looking at a piece of ground. Ohio DNR's Floodplain Management Program maintains the state's flood hazard data and maps, and your township or county zoning office can confirm whether a specific parcel falls inside a mapped floodplain before you buy. It's a five-minute call that can save you from a very expensive surprise during a building permit application.
Land Buying Across Springfield and the Surrounding Counties
Springfield and Clark County are home base for our team, with Dayton just down the road in Montgomery County — and many of the land and acreage searches we help with stretch well past both, into Champaign, Madison, Greene, Logan, Miami, and Union counties, all within about an hour of Springfield. Each county runs its own auditor's office and its own zoning rules, so the same checklist applies no matter which side of the county line you're looking on.
If you'd rather start by browsing what's currently available — acreage, building lots, or homes with land — our search portal lets you filter by lot size and pull up everything from Springfield out through the rest of our service area. And if you already own a home you'd sell to help fund a land purchase, a free home valuation is a quick way to see where you stand before you start shopping for ground.
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If you're comparing a few parcels, ask each township or the county planning office the same question in writing — zoning interpretations can vary depending on who you talk to on a given day, and having an answer in writing protects you if plans or staff change after you close.
Frequently Asked Questions
Do I need a septic site review before buying land in Clark County?
Yes — if you plan to build on land that isn't already served by public sewer, the Clark County Combined Health District should review the site before you close. A site review (currently $50) confirms whether the parcel can support a septic system and that any planned structures meet the required isolation distances, so you don't end up owning land you can't legally build on.
What happens if I buy farmland enrolled in CAUV and build a house on it?
Converting CAUV-enrolled land to a non-agricultural use, like a homesite, removes that portion from the program and can trigger a recoupment charge based on the tax savings you received. Ask the Clark County Auditor's office how a planned home site or driveway will affect the parcel's CAUV status before you make an offer.
Which Clark County townships handle their own zoning?
German, Pike, and Springfield Townships administer their own zoning, while Bethel, Green, Harmony, Mad River, Madison, Moorefield, and Pleasant Townships fall under county zoning. Knowing which authority governs a parcel tells you who to call about setbacks, lot splits, and building permits before you buy.
How do I check if a parcel is in a floodplain?
Ohio DNR's Floodplain Management Program maintains the state's flood hazard data and maps, and your township or county zoning office can tell you whether a specific parcel falls inside a mapped floodplain. Floodplain status can limit where you're allowed to build or install a septic system, so it's worth checking before you buy.
Can I look up Clark County property and tax records online?
Yes — the Clark County Auditor's website lets you search any parcel by owner, address, or parcel number, view GIS maps, and run a tax estimate or conveyance fee calculation before you close. It's one of the first stops for sizing up a piece of land.
How much does a septic site approval cost in Clark County?
A site approval application through the Clark County Combined Health District currently costs $50. It's a small cost relative to discovering after closing that a lot can't support the septic system your plans require.
Land doesn't come with a disclosure packet the way a house does, but a short list of calls — to the right zoning office, the health district, the auditor, and a quick floodplain check — gets you most of the way to a confident offer. If you're looking at acreage anywhere in Clark County or the surrounding region, Douglas Haney & The Haney Group are happy to help you work through that list before you write an offer.
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Douglas Haney & The Haney Group — Lisa Ackerman, Brad Shuman, and Amanda Russell — is here to guide you every step of the way.
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