County guide
Setting a manufactured home in Johnson County
Johnson County requires a development permit for placement, which is not true of every county in this area. The floodplain review runs through that same permit.
What is required
| Item | Johnson County |
|---|---|
| Placement permit | Yes — Development Permit, $240. Expressly includes manufactured homes. |
| Floodplain | Reviewed through the Development Permit. May require form-board survey or elevation certificate. |
| Driveway / culvert | Precinct Road & Bridge. County install runs about $24.84 per foot; self-install permit is free. Get the Development Permit first. |
| 911 address | County 911 Address Coordinator. The address follows the driveway location. |
| Septic (OSSF) permit | $375 conventional, ET or LPD; $475 aerobic. County Development Services acts as the TCEQ designated representative. |
| Certificate of occupancy | No county certificate of occupancy. The county states it lacks authority to issue one. |
| Published timing | Address 1–2 business days. Culvert 5–7 working days after payment. No published total. |
Fees and procedures change, and counties do not always publish current figures in one place. Confirm with the county before you budget.
The address follows the driveway
Because the 911 address is assigned off the driveway location, moving the driveway later can mean re-addressing. Settle access before you request the address, not after.
The order to work in
The sequence is the same everywhere; what changes county to county is which permits attach and who issues them.
- 1
Confirm the land can be served
Which utility is certificated to serve this parcel, whether water is reachable, and whether the soil will take a septic system sized to the home.
Do this before closing, not after. - 2
Address and permits
A 911 address, then whatever county permits apply where you are — which is not the same list in any two counties.
A factory may not ship without an address. - 3
Pad, driveway and culvert
Grade set, fill placed and compacted, and access built well enough to carry a home down it.
The delivery has to physically reach the site. - 4
Septic and water
System designed to bedroom count and soil class, installed, inspected and approved. Tap set or well drilled.
Septic approval gates power in some counties. - 5
Meter loop and service
Service entrance built to the serving utility’s specification, inspected, then energized.
- 6
Set, anchor and finish
Home delivered and set, blocked and anchored, then skirting, steps and landings.
Common questions
Do I need a permit to put a manufactured home on my own land in Johnson County?
In the unincorporated county, the requirements are in the table above. Inside a city’s limits or its extraterritorial jurisdiction, the city’s rules apply as well and are usually more involved. Confirm which jurisdiction the parcel actually sits in first.
How long does the whole thing take?
Individual steps sometimes have published clocks. The total is governed by the septic design and inspection cycle and by the serving utility’s schedule, and neither publishes a guaranteed timeline. Plan in months rather than weeks.
What does the septic system cost here?
The permit is a few hundred dollars. The system is the real cost, and it is driven by bedroom count and soil class rather than by the county. Poorer soils need substantially more disposal area, which is what moves the number.
Who provides electricity out there?
Every county in this area has multiple certificated electric providers, with overlap at city fringes and in unincorporated areas. The serving entity has to be confirmed for the specific parcel — neighbors are not a reliable guide.
Setting a home in Johnson County?
We permit, build and finish these sites throughout Johnson County and the ten around it. Tell us where the land is and what you’re putting on it, and we’ll price the work.