Building permits, zoning and land rules in Cochise County, Arizona

Yes. Unincorporated Cochise County requires a residential building permit to construct a new residential structure, and applications and plan submittals are completed online through the County's permitting portal¹. The property must meet zoning requirements and residential use must be allowed before the County will issue the permit, and construction may start only after the permit is posted¹. Depending on your site, you may also need floodplain, stormwater/drainage, access/driveway, septic or sewer, well, or fire-district approvals alongside the building permit itself¹. Reach the Building Safety Division at Development Services for what your specific project needs¹.

Cochise County Development Services, at 1415 Melody Lane, Building F, in Bisbee, is the Building Safety Division that issues residential building permits for unincorporated land¹. Inside Douglas, the city issues its own building permits and sets its own zoning^9,10; septic permits for every Cochise County address still come from the County Health Department¹¹. Permit fees are published in the County's Development Services Fee Schedule, and online calculators estimate project costs separately from septic, right-of-way and floodplain fees¹². Required inspections appear on the permit or inspection record card and are requested through the County portal; a final inspection closes the permit, and an eligible project may receive a Certificate of Occupancy after its required final inspections and verification of minimum requirements^1,13. Qualifying owner-builders have two paths, but all construction must still comply with County Building Safety Codes and zoning requirements⁵. Option 1 keeps County plan review and key mechanical, electrical, plumbing and fire-prevention inspections⁵. Only Option 1 can receive a conditioned Certificate of Occupancy, and only once the dwelling is complete for occupancy and every required inspection is done and approved¹⁴. That certificate confirms a review of minimum life-safety elements, not full code compliance, so a lender, insurer or future buyer may ask for more documentation⁵. If the house sits in a regulatory floodplain or FEMA special flood hazard area, a FEMA Elevation Certificate is also required before the certificate issues¹⁴. Option 2 has no County construction-plan review or building inspections and cannot receive a Certificate of Occupancy⁵.

Yes. The Planning and Zoning Division administers zoning and subdivision rules throughout unincorporated Cochise County; incorporated municipalities may administer their own rules². Every unincorporated parcel has one of 34 zoning designations, and published residential and rural minimum lot sizes range from 8,000 square feet to 36 acres depending on the district³. Setbacks, lot coverage and allowable building height also vary by parcel, so use the zoning map or request a verification letter before laying out a project^15,16. Dividing land is regulated too: the applicable minor-land-division or subdivision process depends on how many parcels are created and their sizes¹⁷. Commercial agriculture is not a blanket escape from county rules: a zoning exemption can apply to a tract of at least 5 contiguous commercial acres used for crops or livestock, but septic, right-of-way, subdivision, floodplain and manufactured-home installation requirements remain¹⁸.

All septic and alternative onsite wastewater systems in Cochise County are reviewed and permitted by the County Health Department, which holds delegated authority from ADEQ, rather than the state agency itself^4,11. A soil and site evaluation must be completed before you apply, and applications are processed through Cochise Health and Social Services¹¹. If you ever sell a home on septic, the seller must hire a certified inspector to perform a transfer-of-ownership inspection within six months before the sale closes, and the buyer must submit a completed Notice of Transfer and pay the fee within 15 calendar days after transfer¹⁹. Composting toilets and other alternative systems can be approved, but typically only where site conditions such as high groundwater support that design, and a composting toilet doesn't eliminate the need for an approved system to handle kitchen and sink drain water¹¹. Soils are a real constraint here: only about 12.3% of Cochise County's soils carry no severe limitations for a conventional septic drain field²⁰. For wells, a parcel of five acres or less needs an Environmental Health Department well review permit in conjunction with the state (ADWR); larger parcels are reviewed by ADWR alone. Wells must sit at least 5 feet from property lines and at least 100 feet from septic-system components²¹.

Long-term RV living has real limits here. Cochise County allows temporary occupancy of one RV only in connection with an existing principal use, such as a house, or one under construction under an approved building permit, and that occupancy is capped at six months in a calendar year when there's already a home on the property⁶. A stay of 15 consecutive days or less tied to a permitted principal use doesn't need a separate temporary-use permit, but longer stays do, and the RV may not be rented out⁶. Camping isn't allowed on vacant land at all — the County requires a house or some other established use on the property before any camping, in an RV or otherwise, is permitted²². Tiny homes are a different, more settled answer: Cochise County permits tiny homes as single-family dwellings anywhere a single-family home is allowed under the parcel's zoning, provided the home meets applicable building-code, sewer or septic, and water-supply requirements⁷. A manufactured or rehabilitated mobile home can also serve as an accessory dwelling unit, but only in the zoning districts where that's a permitted use and only alongside an existing single-family home and the County's other ADU standards²³.

1. Get a zoning verification letter or check the County zoning map to confirm your parcel's district, allowed use, lot size, setbacks, coverage and height standards before designing^15,16.
2. If you plan to build it yourself, check whether your parcel qualifies for the Owner-Builder Amendment; it generally requires a zoning district allowing one dwelling per four acres or larger, and an individual can use it once every 5 years⁵.
3. Apply online for your residential building permit through the County's permitting portal once your plans are ready^1,13.
4. Apply for a septic permit through the County Health Department, or a well-review permit through Environmental Health if your parcel is five acres or less^11,21.
5. If your lot lies within a mapped floodplain, get a Floodplain Use Permit before construction begins, and be ready to elevate the lowest floor at least 1 foot above the base flood water surface elevation^8,11.
6. If you need driveway access across a county-maintained road ditch, get a right-of-way permit from the Engineering & Natural Resource Department before installing a culvert^11,24.
7. Schedule each required inspection through the County portal as you build, and complete the final inspection to close the permit and obtain a Certificate of Occupancy if the project is eligible; owner-builders on Option 1 also need a FEMA Elevation Certificate first if the house is in a floodplain^13,14.

Cochise County farmland runs about $2,695 an acre, with a typical home value around $264,829²⁰. This is dry country: annual precipitation is only about 14 inches, and severe drought has hit roughly 36.5% of years, so water planning matters²⁰. The land is fairly gentle, with about 71.9% at 15% slope or less, but lightly wooded at just 13.8%²⁰. Federal land covers a notable 26.3% of the county, which can affect what adjoins a parcel and how it is accessed²⁰. Population density is about 20.1 people per square mile, and the nearest city of 100,000 or more is about 67 miles from the county's center²⁰. Property taxes run an effective rate near 0.6%, with a median annual bill around $1,325²⁰. Before you close, get a zoning verification letter for the exact parcel¹⁵, check floodplain status on the County's interactive map and confirm with Engineering if you're unsure¹¹, and budget for a site evaluation given that only about 12.3% of soils here are free of severe septic drain-field limitations²⁰.