Cache, OK Building Permits, Zoning & Septic Rules

The City of Cache, Oklahoma has its own zoning ordinance with ten districts, and its code requires a building permit before construction starts inside city limits¹²³. Septic permits come from the Oklahoma Department of Environmental Quality, not the city⁴. Comanche County itself has no zoning and issues no building permits, which matters only for land outside city limits⁵⁶.

At a glance

Building permit: Required before construction inside Cache city limits; thresholds and exemptions not confirmed³
Zoning: City zoning ordinance with ten districts (A-1, R-1, R-2, R-3, P-1, P-2, C-1, C-2, C-3, I-1)¹²
Septic: Authorization to Construct from Oklahoma DEQ⁷
Mobile homes: Allowed with conditions: skirting, parking, 50 ft lot width, 5,000 sq ft lot area⁸
Domestic well: No state water permit for domestic use of groundwater⁹
County rules: Comanche County has no zoning and issues no building permits⁵⁶

Who to call

Zoning

City of Cache zoning ordinance (Code of Ordinances, Chapter 15)

Zoning regulations and building permit provisions inside Cache city limits

Septic permits

Oklahoma Department of Environmental Quality (DEQ)

Authorization to Construct for new or modified on-site sewage systems

Floodplain permits

Comanche County Office of Floodplain Management

Floodplain Discovery and Floodplain Development Permits in Comanche County

580-585-5305

Contact details are copied from each office’s official page and were checked against it on October 14, 2026.

Off-grid gear

Going off-grid in Cache means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Does Cache, Oklahoma have zoning?

Yes. The City of Cache adopted zoning regulations for all land inside its limits, and the city is divided into ten districts: A-1, R-1, R-2, R-3, P-1, P-2, C-1, C-2, C-3 and I-1¹². Land annexed into Cache is automatically classified A-1 agricultural residential until the city rezones it¹.

District use, height and area rules sit in the zoning ordinance. We could not confirm minimum lot sizes, setbacks, minimum dwelling size, RV or tiny-home rules for any district, so read the ordinance for your parcel's district or ask the City of Cache before you buy¹⁰.

Do you need a building permit in Cache, and who issues it?

Inside Cache city limits, the city's zoning ordinance states that a permit is required before construction can be initiated, with building permit provisions in the city's code of ordinances³¹⁰. We could not confirm the thresholds, exemptions, fees or building code the city applies, so ask the City of Cache before starting.

Oklahoma's statewide residential code is the minimum standard, and cities may enforce higher ones¹¹. Where a permit is issued by a state agency, municipality or other political subdivision under the state codes, the state fee is $4.00 per permit, plus up to $0.50 the issuer may add¹².

Can you put a mobile home in Cache?

Cache's zoning ordinance allows mobile homes with conditions: skirting within 30 days of the permit issue date, defined off-street parking with chipped rock, and a minimum effective lot width of 50 feet and lot area of 5,000 square feet⁸. The district where a mobile home may go, and the city's separate manufactured-housing chapter, were not confirmed; ask the City of Cache. State installation standards also apply to any occupied manufactured home¹³.

How do septic permits work in Cache?

Septic permits for Cache come from Oklahoma DEQ, which issues an Authorization to Construct before any new or modified on-site system is installed⁷¹⁴. Local DEQ Environmental Specialists review and issue authorizations by property location⁴. New systems must be inspected and approved by DEQ or by a certified installer¹⁵.

Whether your lot is on city sewer is unconfirmed; ask the City of Cache about sewer service before planning a septic system.

Building a home in Cache: the steps, in order

Ask the City of Cache which zoning district your parcel is in and what it allows¹⁰.
Get the city's building permit before construction³.
Call the Comanche County Office of Floodplain Management at 580-585-5305: every construction project in the county must complete a Floodplain Discovery¹⁶¹⁷.
If you need septic, get a DEQ Authorization to Construct⁷.
A driveway onto a state highway needs an ODOT driveway agreement before any work in the right-of-way¹⁸.

What stays with Comanche County, and what to check before you buy

Comanche County has no county zoning and does not issue building permits, so those answers apply to unincorporated land, not to Cache⁵⁶. The county does run floodplain review for construction projects¹⁹. The rest of the county's answers are on the Comanche County page.

Oklahoma requires no water permit for domestic groundwater use, including household use and irrigation of less than 3 acres⁹. In Comanche County, 19.1% of soils rate as not limited for a conventional septic drain field, so expect a site evaluation and possibly an engineered system²⁰. The county's effective property tax rate is 0.9%²¹.

Watch-outs

We could not confirm Cache's building permit thresholds, fees, inspections, certificate of occupancy or the building code it enforces; ask the City of Cache¹⁰.
We could not confirm Cache's district-by-district lot size, setback, RV, tiny home or accessory dwelling rules; read the zoning ordinance for your district¹⁰.
Septic and water rules inside Cache city limits depend on whether the lot is on city sewer and water, which we could not confirm⁴.
The 2024 International Residential Code became the statewide minimum for homes on September 14, 2026²².

Sources

Written October 14, 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.

Unanswered questions are usually a sign that Cache publishes no rule on the point, not that none exists. Comanche County’s page lists the county offices to call.

Building permits, zoning and septic rules in Cache, Oklahoma