Unincorporated Kaufman County, Texas requires a Fire Marshal building-permit application for public buildings, commercial establishments and multifamily dwellings with more than 3 units; a typical single-family house is not listed1. Unincorporated land has no county zoning, but septic, floodplain and driveway approvals can still apply2345. Development Services handles septic outside Oak Ridge and Terrell, which have their own septic authorities6.
At a glance
- Building permit
- Required for public, commercial and multifamily buildings with more than 3 units1
- Building code
- 2024 International Fire Code applies to covered commercial and public buildings7
- Zoning
- No general county zoning authority over unincorporated land2
- Septic
- Development Services handles septic except inside Oak Ridge and Terrell36
- RV / tiny home living
- No county zoning restriction, but septic and other development rules can still apply23
- Driveway / culvert
- A county application and $75 fee apply within the county right-of-way58
- Floodplain
- A permit is required for development in mapped floodplain in unincorporated areas4
Who to call
Building permits
Kaufman County Fire Marshal's Office
Building permits for public buildings, commercial establishments and multi-family dwellings with more than 3 units in unincorporated Kaufman County; fire code compliance and construction/operational permits
1902 E. US Highway 175, Kaufman, TX 75142
Septic permits
Kaufman County Development Services
On-site sewage facility (OSSF/septic) permits, plats, 911 addressing, culvert and floodplain permits for unincorporated Kaufman County
101 N. Houston Street, Kaufman, TX 75142
Contact details are copied from each office’s official page and were checked against it on October 11, 2026.
Off-grid gear
Going off-grid in Kaufman 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 Kaufman County, Texas?
Kaufman County requires a Fire Marshal building-permit application for new public buildings, commercial establishments and multifamily dwellings with more than 3 units in unincorporated areas; a typical single-family house is not included in that published list1. Ask the Fire Marshal to confirm the project's classification and Development Services which septic, culvert, floodplain and addressing applications apply19. Inside Terrell, the city handles building permits, including new construction and specified remodeling or accessory work, and also administers septic within city limits1011.
Who issues Kaufman County building permits and inspections?
The Kaufman County Fire Marshal's Office handles covered building applications and inspections in unincorporated areas; call 469-376-4122 or email firemarshal@kaufmancounty.net1129. Kaufman County adopted the 2024 International Fire Code with amendments for commercial and public buildings under the Fire Marshal's jurisdiction7. Subcontractors schedule required inspections, including tests and visual checks before work is buried or covered12. Covered public, commercial and multifamily buildings with more than 3 units need a Certificate of Occupancy before use and annual renewal following a fire-hazard inspection; a new business or ownership change also triggers the requirement, with stated exceptions for certain home businesses and projects already undergoing building-permit review131.
Does Kaufman County have zoning?
Unincorporated Kaufman County has no county zoning ordinance, so county zoning does not set minimum dwelling size, lot size, setbacks, lot coverage, height or land-use districts, or prohibit accessory dwellings, RVs, tiny homes, manufactured homes or temporary camping2. Terrell, Mabank and Kemp have municipal zoning; Mesquite, mainly in Dallas County but extending into Kaufman County, also sets its own zoning14151617. Development Services retains septic permitting outside Oak Ridge and Terrell6. Dividing unincorporated land can require county platting review, subject to state exceptions and municipal jurisdictional limits18.
How do septic permits work in Kaufman County?
Kaufman County Development Services handles septic permits for unincorporated land and city addresses except Oak Ridge and Terrell, which are separate authorized agents; a septic system must be permitted before operation36. Call (469) 376-4127 about county OSSF rules19. Installation or repair of any system portion, including sprinklers, requires a TCEQ-licensed installer or repairer20. Texas's narrow exemption for a single-family dwelling on at least 10 acres requires every condition, including a licensed site evaluation and system components at least 100 feet from property lines; ask Development Services whether county requirements allow it21. Only about 3% of Kaufman County soils rate 'not limited' for a conventional drain field, so arrange a site evaluation early; poor ratings do not mean septic is impossible22.
Can you live in an RV or tiny home in Kaufman County?
For an RV or tiny home on unincorporated Kaufman County land, septic, floodplain, access and platting requirements still need attention even without county zoning34518. We could not confirm county requirements for long-term RV occupancy, utility connections or off-grid sanitation, so ask Development Services how the proposed water and wastewater setup will be treated before moving onto the parcel19. Inside Terrell, permitted uses depend on the city's zoning district, and the city administers septic1411.
Building a home in Kaufman County: the steps, in order
- Confirm whether the parcel is unincorporated or inside a city or its permitting jurisdiction18.
- Ask the Fire Marshal whether the proposed building is one of the public, commercial or larger multifamily projects requiring its building application19.
- If the county construction process applies, submit the Pre-Development Questionnaire, attend the pre-development meeting and file the applicable applications23.
- Allow up to 30 days for each submittal review, then attend the pre-construction meeting before building-permit issuance23.
- Arrange septic, floodplain and county-right-of-way approvals that fit the site345.
- For a covered project, have subcontractors schedule required inspections and complete final acceptance before the Certificate of Compliance1223.
What should you check before buying land in Kaufman County?
Development in an unincorporated FEMA-designated floodplain requires a Kaufman County floodplain permit, with fees based on project scope4. A driveway or culvert within the county right-of-way requires a Culvert Application and $75 fee; Development Services requests payment after reviewing the required documents58. The precinct commissioner determines culvert size, and the permit expires after 12 months5. State-highway access instead requires a fully executed state driveway permit before right-of-way construction24. Confirm plat status before buying or dividing acreage18. For covered county building projects, the building-permit fee uses gross square footage, the county's cost-per-square-foot chart and a 0.3% factor25.
Watch-outs
- The Fire Marshal's published building-permit list names public buildings, commercial establishments and multifamily dwellings with more than 3 units, not typical single-family houses1.
- A county right-of-way driveway needs a county Culvert Application, while a connection to a state highway follows the state driveway-permit process524.
- Texas has limited trade-license exemptions for an owner working on the owner's residence or homestead, but we could not confirm a county owner-builder exemption from permits or inspections; ask the Fire Marshal before starting work269.
Sources
- Permits and Inspections, quoted and re-checked
- Texas law on county zoning and building authority
- On-Site Sewage Facilities, quoted and re-checked
- Floodplain Management, quoted and re-checked
- Culvert Permits, quoted and re-checked
- Kemp: FAQs - Development Services (Kaufman County), quoted and re-checked
- Permits and Inspections, quoted and re-checked
- Payments, quoted and re-checked
- Kaufman County Fire Marshal's Office (kaufmancounty.net)
- Terrell: Building Permits and Inspections (Kaufman County), quoted and re-checked
- Terrell: Septic Installation / Inspection (OSSF) (Kaufman County), quoted and re-checked
- Permits and Inspections, quoted and re-checked
- Certificate of Occupancy, quoted and re-checked
- Terrell: Zoning Changes (Kaufman County), quoted and re-checked
- Town of Mabank: Permits & Inspections (Kaufman County), quoted and re-checked
- Kemp: Sec. 42-220. Permitted uses, A, Agricultural District (Kaufman County), quoted and re-checked
- Mesquite: Appendix C, Zoning Ordinance, § 4.933 (Kaufman County), quoted and re-checked
- Subdivisions & Use of County Land, quoted and re-checked
- Kaufman County Development Services (kaufmancounty.net)
- On-Site Sewage Facilities, quoted and re-checked
- Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), 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
- Permits and Inspections, quoted and re-checked
- Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
- Building Permits | Kaufman County, TX, quoted and re-checked
- Exemptions to Electrician Licensing (Texas statewide rule), quoted and re-checked
Written October 11, 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.