Unincorporated Potter County, Texas does not require a county building permit for an ordinary home and has no county zoning ordinance12. Inside Amarillo, the city issues building permits, enforces adopted building codes and sets zoning345. Septic permits for every address in Potter County, city or not, come from the Amarillo Area Public Health District6.
At a glance
- Building permit
- No county building permit in unincorporated Potter County; Amarillo issues building permits inside city limits13
- Zoning
- No county zoning in unincorporated Potter County; Amarillo has its own zoning inside city limits25
- Septic permits
- Amarillo Area Public Health District (AAPHD) Environmental Health Department, TCEQ's designated authority for Potter County; $800 residential / $900 commercial67
- RV / tiny home / manufactured home living
- No county zoning rule restricts it outside Amarillo, since the county has no zoning ordinance8
- Minimum home size / lot coverage / height
- None set by the county outside Amarillo8
- Septic minimum lot size
- 1 acre with a private well, or 1/2 acre with public water supply (exceptions may apply to lots platted before 1988)9
- Subdivision plat
- A division into two or more parts generally needs an approved, recorded plat before conveyance, subject to statutory exceptions10
- Septic soil difficulty
- 43.7% of county soils are free of severe limits for a conventional drain field11
Who to call
Septic permits
Amarillo Area Public Health District (AAPHD), Environmental Health Department
OSSF (septic) permit applications, fees, inspections, and 9-1-1 address requests tied to septic permits for Potter County
808 S Buchanan St, Suite 275, Amarillo, TX 79101
Building permits
City of Amarillo Building Safety Department
Building, electrical, mechanical, and plumbing permits and inspections inside the City of Amarillo, including the Amarillo portion of Potter County; has no authority over unincorporated land outside city limits and the one-mile ETJ
808 S Buchanan St, Amarillo, TX 79101
Planning & zoning
Potter County Commissioners Court (County Judge's Office)
Approves subdivision plats for land divided outside incorporated city limits, sets the county's subdivision regulations, and administers county government generally; Potter County has no separate zoning or building department
Potter County Courthouse, 500 S. Fillmore, Amarillo, TX 79101
Roads & driveways
County road maintenance and construction-related questions for driveways and culverts touching county roads
2419 Willow Creek, Amarillo, TX 79107
Contact details are copied from each office’s official page and were checked against it on October 9, 2026.
Off-grid gear
Going off-grid in Potter County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Potter County, Texas?
No general building permit is required for an ordinary home in unincorporated Potter County1. The county's subdivision, floodplain, and sanitation rules can still affect a project even without a county building permit11213. Inside Amarillo city limits, most construction requires a city permit, and the city enforces adopted building codes that took effect in 202434. Amarillo development must complete applicable final inspections, and a new residential or commercial building receives a certificate of occupancy when its permit is completed1415. Inside Amarillo, a homeowner can apply for a residence permit through the city if the address is the applicant’s homestead with the Potter/Randall Appraisal District, and that route does not remove the permit requirement16. Before buying or designing, confirm whether the parcel is inside Amarillo city limits; the city's permit, code, inspection, and occupancy rules do not establish those requirements for unincorporated Potter County415.
Who issues building permits, septic permits and driveway approvals in Potter County?
Potter County has no county building-permit office for homes on unincorporated land1. Inside Amarillo, the City of Amarillo Building Safety Department issues building permits and inspections; its office is at 808 S Buchanan St, Amarillo, TX 79101, and its phone number is 806-378-304117. Septic permits are different: the Amarillo Area Public Health District’s Environmental Health Department issues them for every address in Potter County, inside or outside Amarillo; its office is at 808 S Buchanan St, Suite 275, Amarillo, TX 79101, and its phone number is 806-378-94721819. The Potter County Commissioners Court approves qualifying subdivision plats outside incorporated city limits; call (806) 379-22462010. For county-road driveway or culvert questions, contact Potter County Road & Bridge at (806) 383-2273 before designing the driveway21.
Does Potter County have zoning?
Unincorporated Potter County has no county zoning ordinance2. County rules therefore do not set a minimum dwelling size, general minimum lot size, lot coverage, building height, or zoning districts, and they do not restrict RV, tiny-home, manufactured-home, accessory-dwelling, or temporary-camping occupancy through zoning8. Amarillo is different: municipal zoning regulates land use, setbacks, parking, and related development questions5. A manufactured home inside Amarillo may need zoning review and a Specific Use Permit if that use is not allowed in the parcel's zone22. Unincorporated land is not rule-free. Dividing a tract into two or more parts generally triggers Potter County platting rules, subject to statutory exceptions, and a subdivision inside a city's extraterritorial jurisdiction needs city approval before final county approval10. Subdivision plats must also show vehicle ingress and egress, while certain intersection lots have a 30-foot structure setback2324.
How do septic permits work in Potter County?
Installing, repairing, replacing, or altering an OSSF in Potter County requires a permit from the Amarillo Area Public Health District's Environmental Health Department199. Submit the application and required documents first; an approved Authorization to Construct is required before an inspection can be scheduled25. A private-well property generally needs a 1-acre lot, while a public-water property generally needs a 1/2-acre lot, with possible exceptions for property platted before 19889. A homeowner may install or repair the system serving the homeowner's single-family residence, but rental, leased, and commercial properties require a licensed installer9. An approved Authorization to Construct is valid for one calendar year, and the system must pass inspection within that period or a new permit is needed26. The residential fee is $800, the commercial fee is $900, and an existing-system inspection costs half the permit fee7. Only 43.7% of Potter County soils avoid severe limitations for a conventional drain field, so complete the site evaluation before fixing the house location11. A narrow statewide 10-acre exemption may apply when every listed condition is met, including a licensed evaluation and 100-foot property-line separation27.
Can you live in an RV or tiny home on your land in Potter County?
Potter County does not use zoning to restrict RV, tiny-home, manufactured-home, accessory-dwelling, or temporary-camping occupancy on unincorporated land, and county zoning sets no minimum dwelling size8. That answer is limited to county zoning: a septic system serving the dwelling still needs AAPHD approval unless a state exemption applies927. Potter County's subdivision rules also still govern a qualifying land division, access shown on the plat, drainage, and other improvements1223. Inside Amarillo, municipal zoning and building rules replace the unincorporated-county answer54. In particular, Amarillo requires a zoning check before placing a manufactured home and may require a Specific Use Permit when the home is not allowed in that zone22.
Building a home in Potter County: the steps, in order
- Confirm whether the parcel is inside Amarillo city limits; city permits, codes, inspections, and occupancy approval apply there341415.
- For unincorporated land divided into two or more parts, confirm that any required plat was approved and recorded before conveyance10.
- Settle access early: subdivision plats must show ingress and egress, and state-highway access requires Form 1058 plus 24-hour notice before construction2328.
- Order the septic site evaluation, submit the AAPHD application, and obtain Authorization to Construct before scheduling inspection25.
- Account for the $800 residential OSSF fee and verify whether the narrow 10-acre state exemption actually applies727.
- On an unincorporated ordinary-home project, no general county building permit is required1.
What to check before you buy land in Potter County
Water deserves an early budget: severe drought affected about 40.2% of years, and annual precipitation is about 18.7 inches2930. Only 43.7% of Potter County soils avoid severe limitations for a conventional drain field, so do not assume a standard septic layout will fit the planned homesite11. Confirm city-limit status because Amarillo zoning, permits, adopted codes, inspections, and occupancy approval apply inside the city541415. For recently divided unincorporated land, verify the approved recorded plat, legal access, planned driveway points, drainage, and whether the county accepted any roads for maintenance1223. A state-highway driveway requires a separate TxDOT permit28. Typical property tax is about 1.5%, with a median annual bill near $2,0283132.
Watch-outs
- Amarillo's building-permit, code, inspection, and certificate-of-occupancy rules apply inside the city and should not be treated as Potter County rules for unincorporated land341415.
- We could not confirm a Potter County rule on building inspections, certificates of occupancy, or an owner-builder exemption for unincorporated construction; ask the Commissioners Court before relying on their absence20.
- An approved subdivision plat does not mean Potter County accepted the subdivision roads or other improvements for maintenance12.
Sources
- Texas Local Government Code Chapter 232 - County Regulation of Subdivisions (2026 county census)
- Texas Local Government Code Chapter 232 - County Regulation of Subdivisions (2026 county census)
- Work Exempt – From Permit, quoted and re-checked
- Building Safety - City of Amarillo, quoted and re-checked
- Codes & Ordinances - City of Amarillo, quoted and re-checked
- Amarillo Area Public Health District - On-Site Sewage Facility (2026 county census)
- Fee Schedule, quoted and re-checked
- Texas law on county zoning and building authority
- On-Site Sewage Facility, quoted and re-checked
- Potter County Subdivision Regulations, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Potter County Subdivision Regulations, quoted and re-checked
- Potter County Subdivision Regulations, quoted and re-checked
- Development Liaison, quoted and re-checked
- Certificate of Occupancy, quoted and re-checked
- Building Safety, quoted and re-checked
- City of Amarillo Building Safety Department (amarillo.gov)
- Amarillo Area Public Health District (AAPHD), Environmental Health Department (amarillo.gov)
- On-Site Sewage Facility, quoted and re-checked
- Potter County Commissioners Court (County Judge's Office) (co.potter.tx.us)
- Potter County Road & Bridge (co.potter.tx.us)
- Building Safety - City of Amarillo, quoted and re-checked
- Potter County Subdivision Regulations, quoted and re-checked
- Potter County Subdivision Regulations, quoted and re-checked
- On-Site Sewage Facility, quoted and re-checked
- On-Site Sewage Facility, quoted and re-checked
- Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
- Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
- Share of years in severe drought: Bolthole Index county data
- Annual precipitation: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 9, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.