Zoning in Ray County, Missouri

Three residential districts, set by acreage rather than lot dimensions

Ray County's zoning ordinance sorts unincorporated residential land into three districts based on how large the resulting lot is: R-A covers lots of 19.00 acres and up, R-1 covers 9.00 to 18.99 acres, and R-1A covers 3.00 to 8.99 acres, alongside separate agricultural, commercial, and other district classes for uses outside straightforward rural residential. That acreage-first structure is a different way of thinking about "what can I do here" than a typical suburban zoning code built around minimum lot widths and floor-area ratios -- in Ray County, the size of the parcel you're creating or buying is itself the primary variable that determines which district, and which use rights, apply.

A use that doesn't fit as-of-right in a given district generally needs a Conditional Use Permit from the Planning & Zoning board, which meets monthly (first Monday, schedule permitting) at the Ray County Courthouse in Richmond. Before assuming a specific use -- a second residence, a commercial operation, a larger agricultural building -- is allowed on a given parcel, confirm both the parcel's current district and whether that use requires a CUP with the Planning & Zoning office (816-776-5398) directly.

The county's own accessory-dwelling-unit rules

Ray County has adopted its own accessory-dwelling-unit (ADU) standards, documented by the Mid-America Regional Council alongside other Kansas City-area jurisdictions' ADU rules -- itself a sign of how much more built-out this county's zoning code is than the typical unzoned rural Missouri county. An ADU can be built into the principal structure or as a separate unit located within 100 feet of it, with no more than one ADU allowed per lot or parcel. The catch is that this by-right allowance in the R-A, R-1, and R-1A districts only covers ADUs that are never rented -- the kind of mother-in-law suite, guest house, or maid's quarters a family might build for their own use. An ADU meant to be rented out, or one proposed in a district outside those three, generally needs a Conditional Use Permit instead.

This matters concretely for anyone planning a multi-generational living arrangement or a caretaker's residence on rural Ray County acreage: the never-rented condition is doing real regulatory work here, and a buyer who plans to eventually rent out a second dwelling on the property should ask Planning & Zoning directly whether that would require a CUP, rather than assuming the by-right ADU allowance covers it.

Solar and other uses that need a specific county permit

Ray County Planning & Zoning issues a distinct Solar Permit application, which puts the county in a genuinely different position than most rural Missouri counties on solar development: where an unzoned county's only real lever over a solar lease is negotiating road and right-of-way access with the County Commission, Ray County has an actual permit process a solar installation has to clear first. As of this research pass, no specific utility-scale solar project has been publicly reported for Ray County, but the permit structure itself is worth knowing about if you're considering leasing land for solar or evaluating a parcel where a lease has already been discussed -- ask Planning & Zoning what a Solar Permit application requires and whether any applications are pending for the area.

Subdividing land: plat review before it ever reaches the recorder

Splitting land in unincorporated Ray County isn't just a matter of drawing new boundary lines and recording a deed -- the county has adopted subdivision regulations under RSMo Chapter 64, so a plat has to go to the Planning & Zoning board for review before the County Commission and County Clerk will sign off and the Recorder can record it, consistent with the plat-recording rules in Section 89.440 RSMo. Every owner of record needs to sign the plat in front of a notary, and copies go to Planning & Zoning along with the required filing fee before final Commission approval.

For a buyer, this means a parcel described as "already split off" from a larger tract deserves a direct question: was that split run through Planning & Zoning's subdivision review, or was it just a boundary survey and a deed? An informal split that skipped plat review can leave title and access questions unresolved in ways a simple deed search won't surface -- confirm subdivision history with Planning & Zoning and the Recorder of Deeds before relying on an informal split as if it were a fully reviewed subdivision.

What to check before you buy or build

1. Confirm the zoning district (R-A, R-1, R-1A, or another class) for the specific parcel with Planning & Zoning (816-776-5398) -- don't assume acreage alone tells you the district without checking the county's zoning map.
2. If your plan involves a use beyond straightforward rural residential -- a business, a larger outbuilding, an event use, a solar lease -- ask directly whether it requires a Conditional Use Permit or a separate permit like the Solar Permit.
3. If you're planning a second dwelling on the property, clarify with Planning & Zoning whether it qualifies as a by-right ADU (never rented, within 100 feet of the principal structure) or would need a CUP.
4. Before buying a parcel described as already split from a larger tract, confirm with Planning & Zoning and the Recorder of Deeds that the split went through subdivision plat review rather than an informal deed-only division.
5. Budget for actual permit fees and lead time -- Ray County reports a $150 building permit fee and a $300 septic permit fee (plus $100 for a self-install consultation), with penalties reported at $250 to $1,000 for construction started before a permit is pulled.