A lot split in Arizona can be approved even when the new parcel can’t yet get a building permit. The state law that governs smaller land divisions lets a county sign off on the split itself while the building permit waits until access, zoning and utility conditions are met. So for a split parcel, the useful question is whether you can build on what the split created, and Arizona law tells you where to look. For the wider buying process, start with our guide to buying land for a new build.
Key Takeaways
– Arizona lets counties review divisions of five or fewer lots, any of them ten acres or smaller, at staff level, and a county can’t deny one that meets the statute (A.R.S. 11-831).
– An approved split can still come with a signed acknowledgment that no building permit will issue until the lot meets the requirements.
– Legal access to a parcel isn’t the same as a road the county maintains.
– Dividing land into six or more lots generally brings in Arizona’s subdivision rules, though divisions where each lot is thirty-six acres or more are treated differently.
What counts as a lot split in Arizona?
A lot split is a small land division that a county can review at staff level rather than through a full subdivision process. Under A.R.S. 11-831, a county board of supervisors may adopt rules for “staff review and approval of land divisions of five or fewer lots, parcels or fractional interests, any of which is ten acres or smaller in size.”
Two parts of that statute matter to a buyer. First, the county “may not deny approval of any land division that meets the requirements of this section.” Second, timing: “If a review of the request is not completed within thirty days after receiving the request, the land division is considered to be approved.”
That combination keeps the process fairly quick. It’s also why a split parcel deserves its own due diligence. The review is built to process the division, not to confirm the new lot is ready for a house.
Does an approved lot split mean you can build?
Not necessarily, and it’s the most important thing to understand before you buy a parcel that came out of a split.
Under A.R.S. 11-831(B), an application is approved if the new lots meet minimum zoning, the applicant shows legal access, a surveyor or engineer states whether each lot has “physical access that is traversable by a two-wheel drive passenger motor vehicle,” utility easements are reserved, and the applicant signs an affidavit about unlawful subdividing.
Subsection C is the part to read closely. An application that doesn’t meet those conditions “shall still be approved if the applicant provides an acknowledgment that is signed by the applicant and that confirms that a building or use permit will not be issued by the county until the lot, parcel or fractional interest has met the requirements of subsection B.”
In practice, the split can be recorded and the parcel sold while the county has already said it won’t issue a building permit until the gaps are fixed. A buyer who only asks “is this a legal lot?” can get a yes and still own land that isn’t ready to build on.
Subsection D adds that an approval may “identify topographic, hydrologic or other site constraints, requirements or limitations that must be addressed as conditions to the eventual issuance of a building or use permit.” Washes, slopes and drainage can all become conditions attached to the lot.
What to ask: was this parcel created by a split, and does the approval carry any acknowledgment or conditions tied to a future building permit? Ask for the approval paperwork, not a summary of it.
What should you look for in the deed?
Look for any notice about access or zoning deficiencies. Arizona’s statute provides for exactly that kind of notice, and it’s easy to miss if you only read the listing.
Subsection E of A.R.S. 11-831, which applies where the statute’s other review provisions don’t, says that when “legal access is not available, the legal access does not allow access by emergency vehicles or the county zoning requirements are not met, the access or zoning deficiencies shall be noticed in the deed.”
The same subsection carries a line worth reading slowly: if the legal access doesn’t allow emergency vehicles to reach the lot, “neither the county nor its agents or employees are liable for damages resulting from the failure of emergency vehicles to reach the lot, parcel or fractional interest.”
For anyone planning to live on the land, that’s a safety question as much as a permit one.
Which review path applied to a particular parcel depends on how the county handled that split, so don’t assume a clean deed means a clean parcel. Read the deed, the recorded survey and any recorded conditions together, and ask a title professional or a real estate attorney to walk you through anything you don’t understand.
Is legal access the same as a road someone maintains?
No. Legal access and road maintenance are two separate things.
Arizona’s statute defines legal access narrowly. Under A.R.S. 11-831(H), “‘Legal access’ means a public right of vehicular ingress and egress between the lots, parcels or fractional interests being created.” That’s a right to get in and out. It says nothing about who grades the road, fixes washouts or clears it after a storm.
Mohave County publishes three standards for the roads it maintains, on its Three Standards of Roadway Maintenance page:
| Standard | What the county says about it |
|---|---|
| Regular Road Maintenance | Meets county standards; “maintained on a routine basis by the Road Department” |
| Tertiary Road Maintenance | Opened before 1990 but not built to county standards; maintained “as time is available,” “possibly no more than one time a year” |
| Primitive Road Maintenance | Opened after June 13, 1975 and accepted before June 13, 1985, not built to county standards; maintained “as time is available,” “possibly no more than one time a year” |
The county’s page also says that “all roads must be petitioned for inclusion into the County Road Maintenance System, and the petition approved by the Board of Supervisors,” while “Roads constructed as part of an approved subdivision are automatically included in the County’s Regular Road Maintenance system one year after final acceptance.”
So a road serving a split parcel might not be on the county’s maintenance system at all. If it isn’t, upkeep can fall to the landowners who use it. Ask which standard, if any, covers the road to your parcel before you buy.
When does a land division become a subdivision?
At six lots: Arizona treats six or more lots as a subdivision, which brings a separate set of state rules.
Under A.R.S. 32-2101, “subdivision” or “subdivided lands” means land “divided or proposed to be divided for the purpose of sale or lease, whether immediate or future, into six or more lots, parcels or fractional interests.” That definition doesn’t include a division into lots “each of which is or will be thirty-six acres or more in area.”
Larger parcels fall under a different label. The same statute defines “unsubdivided lands” as six or more lots that are “thirty-six acres or more each but less than one hundred sixty acres each.”
Before a subdivider offers subdivided lands, A.R.S. 32-2181 says they “shall notify the commissioner in writing of the subdivider’s intention.” That’s the state real estate commissioner.
What is “acting in concert”?
It’s an attempt to dodge the six-lot threshold with a chain of smaller splits. A.R.S. 11-831(F) makes it “unlawful for a person or group of persons acting in concert to attempt to avoid this section or the subdivision laws of this state by acting in concert to divide a parcel of land into six or more lots or sell or lease six or more lots by using a series of owners or conveyances.”
The statute also notes that “A familial relationship alone is not sufficient to constitute unlawful acting in concert.” If a parcel sits inside a pattern of repeated splits from one original tract, that history is worth asking about.
What does the law say about water on unsubdivided land?
It requires a statement about water, and a plain warning when nobody knows.
This rule covers unsubdivided land, meaning six or more lots of at least thirty-six but less than one hundred sixty acres each, not a typical split of five or fewer lots. For that land, A.R.S. 32-2195 says the owner or agent “shall notify the commissioner in writing” before offering it for sale or lease. That notice must include “A true statement setting out the availability of water or lack thereof.”
Where no water report exists, the statute is direct. The commissioner requires that promotional material and contracts “adequately display that no report has been prepared and that the availability of water is unknown.”
Water is often the deciding factor on desert land. Our guide to water rights in Arizona desert land covers what to check, and the well and septic checklist covers the permits that come after.
A buyer’s checklist before you close on a split parcel
Work through these before your due diligence period ends:
- Confirm how the parcel was created. Was it a split, a subdivision lot or an older parcel? Ask for the approval and any recorded survey.
- Look for a building-permit acknowledgment. If the split was approved under subsection C, find out exactly which requirement is still unmet.
- Read the deed for noticed deficiencies in legal access, emergency-vehicle access or zoning.
- Check physical access. Can a two-wheel-drive passenger vehicle get there today?
- Find out who maintains the road, and which county standard applies, if any.
- Confirm the utility easements reserved for the parcel. A.R.S. 11-831(H) defines a utility easement as “an easement of eight feet in width.”
- Check the zoning minimum for the lot. Our guides to buying acreage in Mohave County and the best areas to buy land near Kingman cover zoning and lot size in more depth.
- Ask about water before anything else is final.
Mohave County’s own land-division process, forms and fees can change, so confirm the current requirements with Mohave County Planning and Zoning for the specific parcel.
Frequently Asked Questions
Can a county deny a lot split in Arizona?
Not if the split meets the statute. Under A.R.S. 11-831, a county “may not deny approval of any land division that meets the requirements of this section.” If the county doesn’t finish its review within thirty days of receiving the request, the division is considered approved. That doesn’t mean the resulting lot is ready for a building permit.
Can I build on a lot that was just split?
It depends on the conditions attached. An approved split can still carry a signed acknowledgment that the county won’t issue a building or use permit until the lot meets the statute’s requirements, including minimum zoning, proof of legal access, a surveyor’s statement on physical access and reserved utility easements. Ask for the approval paperwork and check whether any condition is still open.
How many lots make a subdivision in Arizona?
A subdivision starts at six lots. Under A.R.S. 32-2101, land divided for sale or lease into six or more lots, parcels or fractional interests is a subdivision. Divisions where each lot is thirty-six acres or more are excluded, and six or more lots of at least thirty-six but less than one hundred sixty acres each are “unsubdivided lands.”
Does the county maintain the road to my parcel?
Not automatically. Mohave County says all roads must be petitioned into its maintenance system and approved by the Board of Supervisors, while roads built in an approved subdivision are added one year after final acceptance. Ask which of the county’s three maintenance standards covers your road, if any.
Getting a split parcel checked
A split parcel can be a good buy. It just needs a closer look than a finished lot in an established subdivision, because the approval and the building permit are two separate questions.
Our team has spent more than 20 years in Mohave County. If you’re weighing a specific parcel, call The Hassell Team’s Kingman office, Keller Williams Arizona Living Realty, at (928) 715-7653 or contact us, and we’ll help you work through the paperwork, the access and the questions to put to the county. You can also browse land for sale.
Sources
- Arizona State Legislature, A.R.S. 11-831, Review of land divisions; definitions, retrieved 2026-09-21, https://www.azleg.gov/ars/11/00831.htm
- Arizona State Legislature, A.R.S. 32-2101, Definitions, retrieved 2026-09-21, https://www.azleg.gov/ars/32/02101.htm
- Arizona State Legislature, A.R.S. 32-2181, Notice to commissioner of intention to subdivide lands, retrieved 2026-09-21, https://www.azleg.gov/ars/32/02181.htm
- Arizona State Legislature, A.R.S. 32-2195, Notice to commissioner of intention before offering for sale or lease of unsubdivided land, retrieved 2026-09-21, https://www.azleg.gov/ars/32/02195.htm
- Mohave County Public Works, Three Standards of Roadway Maintenance, retrieved 2026-09-21, https://www.mohave.gov/departments/public-works/divisions/roads/three-standards-of-roadway-maintenance/