Building permits, zoning and septic rules in Jackson County, Texas

At a glance

Building permit

Floodplain determination first ($20); a Development Permit is mandatory inside a Special Flood Hazard Area and not necessary outside one unless otherwise noted⁷⁸

Zoning

None; no minimum lot size, setback or use restriction is set countywide¹²

Septic permit

Required; the county administers its own adopted rules as TCEQ's authorized agent⁹⁵

RV, tiny home or manufactured home

No zoning-based restriction on occupancy on your own lot, but placing a manufactured home or RV counts as development²⁸

Minimum lot size / setbacks

None set countywide; there's no zoning ordinance to set them²

Owner-builder exemption

No general exemption confirmed; owners may install their own septic system, but anyone paid during installation must be a licensed installer¹⁰

Septic-favorable soils

About 0% of the county's land is rated free of severe limits for a conventional drain field¹¹

Property tax

About 1.1% effective rate; median bill around $1,847/year¹²¹³

Water well

No drilling permit within Jackson County, but written notice of intent to drill goes to the groundwater district first¹⁴

Who to call

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Do you need a building permit in Jackson County, Texas?

It depends on where the parcel sits relative to the floodplain. Unincorporated Jackson County requires a floodplain determination application for any proposed development, with a $20 processing fee⁸. If the property is outside the Special Flood Hazard Area, no Development Permit is necessary unless otherwise noted; if it is inside, a Development Permit is mandatory and more steps follow, including an elevation certificate⁸¹⁵. Placing a manufactured home or RV counts as development⁸. Published fees run $75 for a residential structure under 2000 square feet and $100 above that¹⁶. The county's materials do not establish a general building-code permit requirement beyond this development and floodplain process, and Texas law gives counties building-permit power only in narrow situations tied to population or an international border⁸¹⁷. In a regulated floodplain, no occupancy may occur before all permits are released, and a certificate of occupancy follows the final elevation certificate¹⁸.

Who is the Jackson County building department, and how do you reach them?

Jackson County's Office of Permitting & Inspection is reached at 361-782-7552 (fax 361-782-0500) from 411 N. Wells - Room 130, Edna, Texas 77957, with office hours Monday through Thursday, 8:00 am to 4:30 pm, and Friday, 8:00 am to 12:00 pm¹⁹. The same office and number handle commercial and pipeline permits, along with residential development, floodplain and septic permitting¹⁹. Applications, the county's Flood Damage Prevention Ordinance, Subdivision Regulations and On-Site Sewage Facility rules are all posted on the county's own site as downloadable forms¹⁹. If you're developing a multi-space manufactured-home rental community rather than placing one home on your own lot, a separate Manufactured Homes Regulations order adds its own survey, infrastructure and bonding requirements on top of the standard permits¹⁹. The residential OSSF permit fee is $250¹⁶.

Does Jackson County have zoning?

Jackson County has no zoning ordinance, so the county sets no minimum lot size, no setback, no lot-coverage limit and no building-height limit anywhere in unincorporated land¹². Without a zoning ordinance, the county also places no zoning-based restriction on an accessory dwelling, an RV, a tiny home or a manufactured home used as a residence². That doesn't remove the county's other tools, though: its Office of Permitting & Inspection still runs development, floodplain, septic and subdivision permitting programs across unincorporated Jackson County¹⁹. Placing a single manufactured home on your own lot counts as development and goes through the floodplain determination process⁸; only a multi-space rental community triggers the county's separate Manufactured Homes Regulations order¹⁹. Inside the City of Edna, city zoning applies and the county's answer does not; call the city before buying there³. Dividing land is regulated by the county's Subdivision Regulations, which come with an Application for Subdivision on the Permitting page²⁰.

How do septic permits work in Jackson County?

Jackson County requires a septic permit for on-site sewage facilities (OSSF) and administers the program itself, having adopted its own Order Adopting Rules of Jackson County, Texas for On-Site Sewage Facilities as the Texas Commission on Environmental Quality's authorized agent⁹⁶. That local authority matters more here than in most counties: essentially none of Jackson County's land -- about 0% by soil-survey data -- is rated free of severe limits for a conventional septic drain field, so budget for a site evaluation and very likely an alternative or engineered system on any given parcel¹¹. Statewide, Texas law lets a single-family home on at least 10 acres skip the OSSF permit if it meets a list of conditions, including being the only dwelling on the tract, and the county's own guidelines say the 10-acre rule does not exempt the owner from the other state regulations or the site-and-soil filing²¹²². With soils this limited, an exemption doesn't remove the practical engineering challenge. The county will not issue an OSSF permit until the floodplain determination application and any associated flood-area permit are granted, except for replacements²³. The residential OSSF permit fee is $250¹⁶. Texas requires a permit for most septic installations, so confirm with the county before relying on the 10-acre exception²⁴. An authorized agent like Jackson County, or its designated representative, reviews plans, issues the permit and inspects installation²⁵.

Can you live in an RV or tiny home on your land in Jackson County?

Jackson County places no zoning-based restriction on RV occupancy, tiny-home occupancy or manufactured-home occupancy on private land, because the county has no zoning ordinance to set one²¹. That's a direct result of state law: Texas gives counties zoning power only in specific, narrow situations, and Jackson County doesn't fall into any of them²⁶. Removing a zoning restriction doesn't remove the county's floodplain process, though: placing a manufactured home or RV counts as development, and inside a Special Flood Hazard Area a Development Permit is mandatory⁸. It also doesn't change the septic math: any home, manufactured home or long-term RV setup on your own lot still has to solve for soils that are essentially all rated severely limited for a conventional drain field¹¹. If you're placing multiple RVs or manufactured homes as a rental operation rather than one home on your own parcel, the county's separate Manufactured Homes Regulations order applies instead of the standard process¹⁹.

What are the steps to build a home in Jackson County, Texas?

1. File the floodplain determination application first, with an official 911 address, proof of ownership and the $20 fee; outside a Special Flood Hazard Area no further documentation is necessary and applicable permits are released after fees are paid, while inside one you must obtain a Development Permit and an elevation certificate²³¹⁵.
2. Get a septic site evaluation early: with virtually none of the county's soil rated free of severe limits for a conventional drain field, budget time and money for an engineered system¹¹⁶.
3. Apply for your septic (OSSF) permit through Jackson County's Office of Permitting & Inspection, which administers its own adopted rules as TCEQ's authorized agent⁶⁹.
4. Submit any required development permit application for a new residential structure, addition, barn/shop or manufactured home to the Office of Permitting & Inspection at 411 N. Wells - Room 130, Edna, Texas 77957, 361-782-7552¹⁹.
5. If your driveway connects to a state highway, submit TxDOT's Form 1058 and get a fully executed driveway permit, giving TxDOT 24-hour notice, before starting construction²⁷.
6. Budget for property tax: Jackson County runs about a 1.1% effective rate, with a median bill near $1,847 a year¹²¹³.

What should you check before buying land in Jackson County, Texas?

Start with the floodplain: ask the Office of Permitting & Inspection for a floodplain determination, because a parcel inside a Special Flood Hazard Area needs a Development Permit and an elevation certificate, and residential development in an identified floodway is prohibited without a No Impact Certificate and Study¹⁵. Jackson County is genuinely rural: density runs about 18.4 people per square mile across roughly 15,221 residents, and the nearest city of 100,000 or more is about 71 miles from the county center²⁸²⁹³⁰. Terrain is flat and mostly open -- all of the county sits at 15% slope or less, and only about 17.1% is wooded³¹³². Septic is the single biggest thing to plan around here: essentially 0% of Jackson County's land is rated free of severe limits for a conventional drain field, so get a site evaluation before you commit to a specific parcel¹¹. For water, Jackson County does not require a drilling permit for water wells, but a written notice of intent to drill goes to the groundwater district before drilling begins¹⁴. Rainfall averages about 42.1 inches a year, with severe drought in roughly 19.1% of recent years, and federal land is minimal at about 2.1% of the county³³³⁴³⁵. Farmland has recently valued around $4,107 an acre and a typical home around $213,544, against a roughly 1.1% effective property tax rate and a median bill near $1,847 a year^36371213. Local utility providers commonly require the county's Utility Permit before connecting service, so ask the Office of Permitting & Inspection and the provider early³⁸.

Watch-outs

• Essentially none of Jackson County's soil is rated free of severe limits for a conventional septic drain field -- get a site evaluation before you buy, since an engineered system is the realistic default, not the exception¹¹.
• Jackson County has no zoning ordinance, but placing a manufactured home or RV counts as development, and any parcel inside a Special Flood Hazard Area needs a Development Permit; file the floodplain determination before you close⁸¹⁵.
• Jackson County's materials state no general owner-builder exemption from permits; the one owner provision found covers installing your own septic system, and anyone you pay during that work must be a licensed installer¹⁰.

Sources

1. Texas Local Government Code Ch. 211 (2026 county census)
2. Texas law on county zoning and building authority
3. City passes first reads of ordinances updating Comprehensive Plan, zoning, quoted and re-checked
4. Jackson County Development Rules, Regulations and Protocols: Non-Commercial Structures, quoted and re-checked
5. co.jackson.tx.us, quoted and re-checked
6. Jackson County Office of Permitting & Inspection - On-Site Sewage Facility Program (co.jackson.tx.us)
7. Jackson County Development Rules, Regulations and Protocols: Non-Commercial Structures (2026 county census)
8. Jackson County Development Rules, Regulations and Protocols: Non-Commercial Structures, quoted and re-checked
9. co.jackson.tx.us (2026 county census)
10. On Site Sewage Facility Information and Guidelines, quoted and re-checked
11. 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
12. Effective property tax rate: Bolthole Index county data
13. Median property tax bill: Bolthole Index county data
14. Water Well Drilling and Plugging, quoted and re-checked
15. Jackson County, Texas Determination of Floodplain Application, quoted and re-checked
16. Jackson County Development and On-Site Sewage Facility Permitting Fee Schedule, quoted and re-checked
17. Local Government Code Chapter 233, County Regulation of Housing and Other Structures (Texas statewide rule), quoted and re-checked
18. Jackson County Development Rules, Regulations and Protocols, quoted and re-checked
19. Jackson County Office of Permitting & Inspection (co.jackson.tx.us)
20. Septic and Development Permitting, quoted and re-checked
21. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
22. On Site Sewage Facility Information and Guidelines, quoted and re-checked
23. Jackson County Development Rules, Regulations and Protocols: Non-Commercial Structures, quoted and re-checked
24. On Site Sewage Facility Information and Guidelines, quoted and re-checked
25. Basics for Septic Systems (Texas statewide rule), quoted and re-checked
26. Local Government Code Chapter 231, County Zoning Authority (Texas statewide rule), quoted and re-checked
27. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
28. Population density: Bolthole Index county data
29. County population: Bolthole Index county data
30. Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data
31. Share of land at 15% slope or less: Bolthole Index county data
32. Wooded share of land: Bolthole Index county data
33. Annual precipitation: Bolthole Index county data
34. Share of years in severe drought: Bolthole Index county data
35. Federal land share: Bolthole Index county data
36. Farmland value per acre (USDA census): Bolthole Index county data
37. Typical home value (Zillow): Bolthole Index county data
38. Jackson County Development Rules, Regulations and Protocols: Non-Commercial Structures, quoted and re-checked

Written October 10, 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.