Running a Business From Rural Land: The 25% Rule

Part of the appeal of forty acres is the assumption that what you do on it is your business. For actual business, that assumption needs adjusting — Cochise County permits home occupations in every zoning district except Heavy Industry, and it regulates them with a specific goal in mind.

The county states that goal outright: home occupations are regulated to preserve residential character, and generally, business activities should be invisible to the neighbourhood.

Invisible is a high bar, and two of the standards enforce it in ways that catch rural trades hard.

The other one that ends most rural trades

Among the prohibited items, alongside hazardous materials and anything generating noise, vibration, odour, dust, heat or glare detectable beyond a property line, is this:

"Any outdoor display or storage of materials, goods, supplies, or equipment."

No qualifier, no screening exception, no acreage threshold. If your business involves a skid steer, a stack of pipe, a pallet of block, a trailer of tools or a yard of anything, it does not fit inside a home occupation as written — and the size of your parcel does not change that.

This is worth confronting early, because it is the difference between a landscaping business run from a rural parcel and a landscaping business that needs a different zoning basis entirely.

The full standards

Requirement	Standard
Where permitted	All zoning districts except Heavy Industry (HI), as an accessory use
Floor area	No more than 25% of the residence's floor area, wherever the activity happens
Appearance	No change to the residential appearance of the premises
Employees	No more than two people on site other than residents or immediate family
Parking	Any parking generated must be met onsite, off the street
Traffic	No greater volume than normally expected in a residential neighbourhood
Signage	One on-site, non-illuminated identification sign, maximum 4 square feet and 5 feet high
Outdoor storage	Prohibited entirely

The signage rule has a sensible carve-out. Vehicle signage does not count against it — signs permanently painted or wrapped on a vehicle, adhesive vinyl on a window, or magnetic signs on vehicles actively used in the business. Those vehicles must be operable and lawfully parked, which is the county's way of saying a dead truck with your logo on it is not signage, it is outdoor storage.

Applying

The process is administrative and reasonably quick:

1. Complete the Home Occupation Application.
2. Prepare a site plan if the occupation is in a detached structure, or a floor plan if it is inside the residence.
3. Submit through the county permitting portal under "Apply for a P&Z project".
4. Planning staff review it and provide instructions for the processing fee.
5. You receive a written decision by email — approved, denied, or approved with conditions.

One useful detail at the end: if you are constructing an accessory structure to house the home occupation, you apply for a residential building permit for that structure. If you are not constructing anything, no other permits are necessary. A consultancy run from a spare room is genuinely just the one application.

If the structure is new, the permit exemptions are worth checking first — though note that a 200 square foot shed exemption requires no utilities, which a workshop will almost certainly have.

When a home occupation is the wrong instrument

If the outdoor storage prohibition or the 25% cap rules you out, the answer is not to proceed quietly. The county has other mechanisms — a Special Use Authorization, a rezoning, or in the case of an ADU used commercially, a Special Use Authorization is specifically required for any use beyond a permitted home occupation. Those are real processes with real timelines, and they are the correct route for a business with a yard.

It is also worth knowing what the county does not regulate here. Livestock for private use is a separate allowance entirely, permitted on parcels over 36,000 square feet in all districts, with the county not regulating numbers — see open range and fencing. And agricultural exemptions are a distinct category from home occupations, which is a question worth asking if what you are doing is farming rather than trading.

What we could not confirm

• We could not confirm which specific activities the county considers eligible. It publishes an FAQ on what may qualify; the safest approach on anything unusual is to describe the activity to Planning before applying.
• A home occupation permit is not a business licence — the county has a separate FAQ making that distinction, and we have not researched state or local licensing, TPT registration or anything else your business may separately need.
• We could not confirm current processing fees. They are in the county's planning fee schedule.
• We could not confirm how "detectable beyond any property line" is measured for noise, dust or glare, or whether it is complaint-driven in practice.
• We could not confirm whether the 25% cap uses gross or livable floor area for the residence, which matters at the margin.
• We could not confirm whether an approval runs with the property or with the applicant, or whether it needs renewal.
• This is a summary of county materials rather than advice on your business. Development Services decides.

The short version

Home occupations are permitted in every Cochise County zoning district except Heavy Industry, as an accessory use, and the governing idea is that the business should be invisible from outside. The floor area cap is 25% of the residence — not of the workshop — so a big shop does not buy you more business space. No more than two non-family employees on site, parking met on your own ground, no change to residential appearance, and one non-illuminated sign of four square feet at five feet high, with vehicle signage exempt. The rule that decides it for most rural trades is the flat prohibition on any outdoor display or storage of materials, goods, supplies or equipment. If your work needs a yard, a home occupation is the wrong instrument and a Special Use Authorization is the conversation to have instead. If it does not, and you are not building anything, it is one application and no other permits.

Sulfur Springs Land Management builds the pads, access and hardstanding a rural workshop sits on — and knowing which side of the outdoor-storage line you are on before pouring concrete is worth the phone call.