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

Unincorporated Donley County does not require prior county approval before new residential construction under the applicable Texas residential-building provision¹. That does not erase building standards, inspections, subdivision rules, setbacks imposed by another authority, municipal extraterritorial-jurisdiction rules or permits for septic systems and state-highway driveways¹. Clarendon says its development work must comply with current building codes, while Howardwick applies its adopted building codes within city limits⁴. An owner working on an owned and occupied residence or homestead may have state licensing exemptions for electrical, plumbing, or air-conditioning work, but those exemptions are not a blanket waiver of local requirements⁵.

Donley County lists no building, planning, zoning or code-enforcement department, so start with the Donley County Courthouse for an unincorporated parcel^10,11. Ask whether the parcel lies in a municipal extraterritorial jurisdiction and whether a subdivision plat, floodplain approval or inspection applies; the floodplain-development and building-inspection requirements could not be confirmed. If land outside municipal limits is divided into lots, a subdivision or public-use features, Texas law generally requires a county plat unless an exception or municipal agreement applies¹². For land inside Clarendon or Howardwick, contact the city because each enforces its own zoning^3,4.

Unincorporated Donley County has no county zoning rule setting minimum dwelling size, minimum lot size, setbacks, lot coverage, building height or zoning districts². The same county-level answer applies to accessory dwellings, RV occupancy, tiny-home occupancy, manufactured-home occupancy and temporary camping on unincorporated land². City limits change the answer: Clarendon enforces zoning codes, and Howardwick has zoning classifications, setbacks, residential requirements and special-permit provisions^3,4. Howardwick's ordinance also addresses square footage, recreational vehicles and permits, so do not carry the unincorporated-area answer into Howardwick⁷.

Texas generally requires a permit and approved plan to construct, install, alter, extend, repair or operate an on-site sewage facility, including a septic system or holding tank⁵. The current Donley County permitting authority could not be confirmed, so contact TCEQ Region 1 and identify the authority before submitting plans⁶. The authority must approve or deny a complete application within 30 days and explain a denial in writing⁵. A qualifying single-family tract of at least 10 acres may be exempt only when every state condition is met, including a licensed site evaluation, a 100-foot property-line separation, on-site effluent disposal and no nuisance or groundwater pollution⁵. Construction inspection applies to systems subject to the rule, and the installer must request it before the authorization expires¹³.

Donley County zoning does not restrict RV or tiny-home occupancy on unincorporated land because the county applies no zoning there². That answer does not waive septic, subdivision, deed-restriction, floodplain, utility or state-highway access requirements. Howardwick regulates recreational vehicles through its city zoning ordinance, and Clarendon enforces city zoning codes, so verify city limits before choosing a dwelling or temporary-living setup^3,7. Residential graywater may be reused for specified purposes, but toilet waste is excluded from graywater and the rule does not establish approval for a complete off-grid sanitation system¹⁴. Composting toilets and other wastewater arrangements still need confirmation under the applicable OSSF rules.

1. Confirm whether the parcel is unincorporated or inside Clarendon or Howardwick, because both cities enforce zoning^3,4.
2. Ask the Donley County Courthouse about subdivision, floodplain and inspection requirements for the parcel¹¹.
3. Contact TCEQ Region 1 to identify the current septic permitting authority, then submit the required OSSF plan and application^5,6.
4. Register a proposed well with the Panhandle Groundwater Conservation District; wells producing more than 17.5 gallons per minute require operating and drilling permits, while lower-output wells require registration⁸.
5. Apply to TxDOT before constructing or changing access on a state highway¹⁵.
6. If dividing the tract, determine whether Texas county platting rules apply before recording or selling lots¹².

Start with wastewater and water: only about 47.8% of Donley County soils lack severe limitations for a conventional drain field, and every well in the Panhandle Groundwater Conservation District must be registered or permitted^8,16. Donley County averages about 22 inches of precipitation a year and experiences severe drought in roughly 31.2% of years, so verify practical well yield and water storage before purchase¹⁶. Farm and ranch land may qualify for agricultural productivity appraisal when it meets current-use, local-intensity and prior-use tests; changing to nonagricultural use can trigger rollback tax⁹. The effective property-tax rate is about 1.1%, with a median annual bill near $1,019¹⁶.