Building on Rural Grayson Land? You'll Still Deal With the County

Buy a few acres outside any city in Grayson County and people will tell you there's no zoning out there, which is true. What's also true is that you can't just bulldoze in. Before a house goes up, you need a Development Certificate, and the county pulls one for three things: assigning a new E-911 address so the ambulance can find you, putting a culvert in to cross the bar ditch onto a county road, and a floodplain determination on the tract. That last one matters more than folks expect on land near Iron Ore Creek or the upper arms of Lake Texoma.

If you're not on a city sewer line, and out there you won't be, any new or replacement septic system needs an On-Site Sewage Facility permit before it goes in the ground. And if any part of your property sits in a Special Flood Hazard Area, you'll need a floodplain development permit plus an elevation certificate before you build, which means surveying the finished floor height above the flood line.

Here's the wrinkle: the county does not issue a building permit or certificate of occupancy for a single-family home, so that part's on you and your contractor. But put up a commercial building, a public one, or multifamily of four units or more in the unincorporated county and the Fire Marshal's office does require a building permit. So a single homesite can still mean a Development Certificate, a septic permit, and maybe a floodplain permit — three separate sign-offs before the slab pours.