Building permits, zoning and land rules in Armstrong County, Texas

Unincorporated Armstrong County does not require a general building permit¹. Texas grants counties only limited building-regulation powers, including fire-code authority for certain commercial, public and larger multifamily buildings in qualifying counties and residential standards in counties meeting statutory conditions⁸. Armstrong County does not publish a building-permit page or adoption order, so ask the County Judge's office whether a recently adopted order or project-specific requirement applies before starting an ordinary house, cabin, barn or shop⁹. Inside a city, ask that city about its own building permits and zoning approval; septic permits remain with TCEQ Region 1 outside the Greenbelt Reservoir area³. Industrialized housing, buildings and modular components remain subject to the state Industrialized Housing and Buildings program¹⁰.

Armstrong County does not publish a building department or a general county building-permit process, and we could not confirm a county building-inspection or certificate-of-occupancy procedure¹. The Armstrong County Judge and Commissioners Court office is the practical first call for current county-level building questions⁹. A city may issue its own building permits and zoning approvals, but TCEQ Region 1 handles septic permits across Armstrong County outside the Greenbelt Reservoir area³. A driveway connecting to a Texas state highway requires a separate TxDOT driveway permit, not an Armstrong County building permit⁷.

Unincorporated Armstrong County has no county zoning ordinance². Texas county zoning authority is limited rather than a general statewide power, and no Armstrong County zoning ordinance applies to unincorporated land^2,5. As a result, unincorporated Armstrong County sets no zoning-based minimum dwelling size, minimum lot size, setback, lot-coverage limit or building-height limit⁵. The same conclusion applies to accessory dwellings, manufactured homes, tiny homes, RV occupancy and temporary camping under county zoning rules⁵. Inside a city, ask that city whether zoning approval is required; septic permits do not shift to the city and remain with TCEQ Region 1 outside the Greenbelt Reservoir area³.

A septic permit and approved plan are generally required to construct, install, alter, extend, repair or operate an on-site sewage facility in Armstrong County⁴. Submit the septic-permit application and planning materials to the permitting authority; it must approve or deny them within 30 days after receipt, explain a denial in writing and provide an appeal path through its supervisory authority⁴. TCEQ Region 1 in Amarillo handles septic permits throughout Armstrong County outside the Greenbelt Reservoir area, including addresses inside cities³. A homeowner may install a system for the owner's single-family home only if the permitting authority allows it, the owner also owns the land, no part of the property is being developed for sale or lease, and all septic requirements are met⁴. Only 27.1% of county soils lack severe limitations for a conventional drain field, making an early site evaluation especially useful⁶.

Unincorporated Armstrong County has no county zoning rule restricting RV occupancy, tiny-home occupancy, manufactured-home occupancy or temporary camping⁵. The county likewise sets no zoning-based minimum dwelling size or minimum lot size in its unincorporated area⁵. That does not eliminate sanitation requirements: an OSSF generally needs a septic permit and approved plan unless every condition of an exemption is met⁴. We could not confirm Armstrong County building-inspection, certificate-of-occupancy, utility-connection or off-grid sanitation procedures, so ask the County Judge's office about county building requirements and TCEQ Region 1 about septic permitting before moving onto the parcel^3,9.

1. Confirm whether the parcel is inside a city: the no-building-permit and no-zoning answers apply only to unincorporated Armstrong County^1,2.

1. For unincorporated land, ask the County Judge's office whether any current county order, subdivision condition, floodplain procedure or access requirement affects the tract⁹.

1. Arrange an early septic site evaluation and contact TCEQ Region 1, which handles septic permits throughout Armstrong County outside the Greenbelt Reservoir area^3,6.

1. Submit the septic-permit application and planning materials unless every condition of an exemption is met; the permitting authority must decide within 30 days after receiving them⁴.

1. Ask TCEQ Region 1 before planning to install the septic system yourself because owner installation is conditional^3,4.

1. If access connects to a state highway, submit TxDOT Form 1058, receive the driveway permit and give the required 24-hour notice before construction in the right of way⁷.

1. For modular or industrialized construction, confirm compliance with the state program's applicable code editions and approved design package¹⁰.

Water and septic feasibility deserve early attention: Armstrong County averages 20.6 inches of precipitation annually, 35.4% of years bring severe drought, and only 27.1% of soils lack severe limitations for a conventional drain field⁶. Confirm the well rules and water source for the specific tract because no county-specific well-permit authority was identified. Check legal access and determine whether a proposed driveway meets a state highway, which requires TxDOT approval⁷. Ask the County Judge's office whether a subdivision condition or floodplain procedure applies, because neither a complete subdivision ordinance nor an Armstrong County floodplain permit process was confirmed^9,11. For budgeting context, the effective property-tax rate is about 1.4%, and the median annual property-tax bill is about $2,679⁶.