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

A residential building permit is not required for a home on unincorporated land in Parmer County¹. The county's published department list has no building-permit or code-enforcement office, but the county website does not expressly say that permits are unnecessary¹. Ask the Parmer County Judge's Office to confirm the answer for a commercial, multifamily or otherwise unusual project before ordering plans or materials². Texas law gives counties only limited building-regulation powers, with separate rules for covered commercial, public and multifamily buildings and for residential standards in qualifying counties that choose to adopt them¹². Cities are different: the City of Bovina has adopted the 2018 International Residential Code for detached one- and two-family dwellings, with permits and fees⁵. Septic permits are not part of that city process, since TCEQ Region 1 handles them⁷.

Parmer County does not list a building, planning or code-enforcement department for unincorporated construction¹. The practical county contact is the Parmer County Judge's Office at 806-481-3383 for confirmation of county responsibilities and questions about an unusual project². Septic work goes to the TCEQ Region 1 Office in Amarillo at 806-353-9251, because the state is listed as the OSSF authority for Parmer County^6,7. A driveway that enters a Texas state highway follows TxDOT's process rather than a county building-permit process: contact the local TxDOT district, submit Form 1058, obtain the executed permit, and give 24-hour notice before beginning work in the right of way¹³.

Parmer County does not have county zoning for unincorporated land¹. As a result, unincorporated Parmer County sets no zoning-based minimum dwelling size, minimum lot size, setback, lot-coverage cap or building-height limit⁹. The same answer leaves accessory dwellings, manufactured homes and temporary camping unrestricted by county zoning⁹. That does not erase septic, highway-access, deed-restriction or municipal requirements that may apply for other reasons. Friona maintains a zoning map and a Planning and Zoning Commission, and Bovina's code zones the entire city into districts, so land inside either city does not receive the unincorporated county answer^3,4. City zoning does not move septic: that still goes through TCEQ Region 1⁷. Before buying, identify the parcel's jurisdiction and ask the relevant city if the tract is inside municipal limits.

TCEQ Region 1 in Amarillo appears to handle OSSF permitting in Parmer County, since the county runs no local program^6,7. The permitting authority also conducts the construction inspection, and the installer must give at least five working days' notice before the system is ready for inspection¹⁴. Texas generally requires a permit and approved plan to construct, install, alter, extend or repair an on-site sewage facility⁸. A single-family dwelling on at least 10 acres may qualify for an exemption only when all state conditions are met, including a site evaluation, no nuisance or groundwater pollution, on-property effluent disposal, no other dwelling on the tract, and at least 100 feet between every part of the system and the property line⁸. Only about 34% of Parmer County soils avoid severe limitations for a conventional drain field, so obtain a parcel-specific site evaluation before assuming a standard trench system will work¹⁵. Wells are a separate permit: Parmer County lies within High Plains Underground Water Conservation District No. 1, which requires a permit application before drilling any well expected to produce 17.5 gallons per minute or more¹¹.

Unincorporated Parmer County has no county zoning rule restricting RV occupancy, tiny-home occupancy, manufactured-home occupancy or temporary camping⁹. The county also sets no zoning-based minimum dwelling size or setback on unincorporated land⁹. Wastewater remains a separate issue: an OSSF, including a septic system or holding tank, generally requires state approval unless a specific exemption applies⁸. Municipal rules can change the answer inside city limits; Friona and Bovina both zone within their city limits^3,4. Before moving an RV or tiny home onto a parcel, verify that it is outside municipal limits and call TCEQ Region 1 about the wastewater plan⁷.

1. Confirm that the parcel is in unincorporated Parmer County; Friona and Bovina have separate municipal zoning, and Bovina has its own residential building code^3,4,5.
2. Call the County Judge's Office to confirm the residential building-permit answer and ask about any unresolved floodplain, road or subdivision issue for the parcel^1,2.
3. Arrange a wastewater site evaluation and contact TCEQ Region 1 before installing septic; obtain a permit or confirm that every condition of the 10-acre exemption is satisfied^7,8.
4. If access meets a state highway, submit Form 1058 to TxDOT and wait for an executed driveway permit before work begins in the right of way¹³.
5. For a private residential state-highway driveway, plan around the 24-foot maximum width and 15-foot minimum pavement radius¹³.
6. If you plan a water well, check the High Plains Underground Water Conservation District permit rules before drilling¹¹.

Start with wastewater and water. About 34% of Parmer County soils avoid severe limitations for a conventional septic drain field, so a site evaluation can materially change the system and budget¹⁵. Annual precipitation averages about 19 inches, and severe drought occurs in roughly 41% of years, making well yield and water availability central due-diligence questions¹⁵. The county is flat and open: all land is at a slope of 15% or less, while recorded tree cover is 0%, so wind exposure and shelter matter more than steep grading¹⁵. Parmer County has about 11 residents per square mile, and the nearest city of 100,000 or more is about 72 miles from the county center¹⁵. The median annual property-tax bill is about $1,994 at an effective rate near 1.6%¹⁵.