Oldham County (county seat: Vega) covers 1501 square miles with a population of 1758. Official county website: www.co.oldham.tx.us/. This page summarizes the verified building-regulation posture of unincorporated Oldham County land; the full 10-dimension scorecard with every source receipt lives on its Freedom Map card.
No county zoning or building code on unincorporated land under LGC ch.233; only OSSF septic permitting applies.
The claim above is source-verified (official statute/county documents; URL, direct quote, and date on the full card). Method: how we verify.
No county's freedom erases state law: septic/wastewater permitting (health authority), well permits and water rights (state engineer/DNR), floodplain rules with federally connected financing, and — in some states — state-run electrical inspections. The full card details which of these bite in Oldham County and how hard.
The score describes unincorporated county land only. Inside Oldham County, incorporated municipalities set their own, usually stricter, rules — including: Vega and the incorporated Boys Ranch enforce their own local rules; most of the county is unincorporated open range.. Land inside town limits follows town code.
Building rules are the first question people ask about Oldham County — and the easiest one to answer. They're rarely the one that decides it. The full card grades all ten dimensions, every claim quoted from the county's own code.
What the Oldham County card answers that this page doesn't:
It's a real map. Click any county in the country and see how it grades — that part costs nothing, and you can compare Oldham County against its neighbors before you spend a dollar.
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Last verified 2026-07-10 · Not legal advice — confirm current rules with the county, the state, and a professional before buying or building.