Building permits, zoning and land rules in Calloway County, Kentucky

Unincorporated Calloway County appears to require a building permit and the state directory identifies a local inspector, but the published material does not define every covered project or inspection stage¹. Kentucky adopted the 2018 Kentucky Building Code and 2018 Kentucky Residential Code, and Calloway County administers them locally through its listed building inspector¹². Local inspection applies to single-family homes where the local inspection program applies¹.

That distinction matters because Kentucky's residential rule says a single-family home needs no permit, inspection or occupancy certificate unless a local ordinance requires one¹³. Before ordering materials, give the Local Building Inspector your parcel location, whether it lies inside city limits, the proposed use, and whether the work is a new home, addition, accessory building or conversion. The county directs questions about new building inspections to that office².

For unincorporated Calloway County, start with the Local Building Inspector at K&S Building Ins. LLC, the county’s listed contact for new building inspections². Ask which application, plans, fees and inspection stages apply to your proposed structure. Inside Murray, building erection, movement, additions and structural alterations require a building permit reviewed by the city’s Zoning Official⁴. Septic approval stays with the Calloway County Health Department, including interim private systems inside Murray where public sewer is unavailable^6,7.

Land division is separate: covered subdivisions require Fiscal Court approval, and final plats generally must be approved and recorded with the Calloway County Clerk before sale or transfer, except for lots already of record⁸. The county subdivision regulations exclude territory regulated, or permitted to be regulated, by Murray⁸.

We could not confirm a countywide zoning ordinance for unincorporated Calloway County or an official statement that the county has no zoning³. Inside Murray, the city administers its own zoning code and map; those city rules do not establish the rules for unincorporated land⁵. Septic site approval remains with the Calloway County Health Department, including interim private systems inside Murray where public sewer is unavailable^6,7.

Calloway County still requires Fiscal Court approval for covered subdivisions, and land within the floodway may not be platted for residential occupancy or building sites⁸. We could not confirm parcel-specific setbacks, lot coverage, building height, minimum dwelling size or accessory-dwelling rules; ask the Local Building Inspector which authority can answer for your parcel^2,3.

The Calloway County Health Department decides whether site and soil conditions are suitable for an onsite wastewater system⁶. The process has a site evaluation and a Permit to Construct, with applicable fees due before work begins; the permit may be obtained only by a Kentucky-certified installer or the homeowner who will install the system⁶. The system is inspected during installation for compliance with Kentucky regulations⁶.

Call before choosing a house site: only 1.5% of mapped county soils lack severe limitations for a conventional septic drain field¹⁴. That soil rating is a screening signal, not a parcel decision, so the health department's site evaluation is essential. Where sewer is unavailable, Kentucky plumbing rules require the house drain to connect to an approved private sewage-disposal system¹⁵.

We could not confirm a Calloway County rule authorizing long-term RV residence or temporary camping on private land; ask the Local Building Inspector about your parcel and proposed use². Kentucky’s exclusion of event-related RV parking from campground regulation for up to 30 days does not authorize residential RV use¹⁶.

We also could not confirm a Calloway County tiny-home occupancy or minimum-size rule³. Ask the Local Building Inspector how the proposed unit is classified and what inspections apply². If the unit will use onsite sewage, obtain the Calloway County Health Department’s site evaluation and construction permit before installation⁶.

1. Confirm the parcel's jurisdiction and describe the project to the Local Building Inspector; the county publishes that office as the contact for new building inspections².
2. If creating or changing lots, resolve Fiscal Court plat approval and recording before transfer or construction dependent on the plat⁸.
3. Have the Calloway County Health Department evaluate the site and obtain the Permit to Construct before septic work begins⁶.
4. Apply for a plumbing permit before work begins. A Calloway County homeowner may personally perform plumbing, sewerage or drainage work in a home the homeowner occupies or builds for personal residential use, with an affidavit and state plumbing-code compliance¹⁰. For a new home, the homeowner must not have obtained another homeowner new-home permit within the preceding five years; this is not a general building-permit exemption¹⁰.
5. If the site is in an identified floodplain, obtain both state and local floodplain permits before development¹⁷.
6. Apply in writing to the state highway district engineer before adding a farm or single-family driveway on a state right-of-way¹⁸.

Put septic suitability near the top of due diligence because only 1.5% of mapped soils avoid a severe conventional-drain-field limitation¹⁴. Ask for the health department evaluation before treating a proposed homesite as buildable⁶.

Check the flood map and contact the county Floodplain Officer if any proposed driveway, fill, utility or structure is in a mapped floodplain¹⁹. Kentucky requires both state and local permits for development in an identified floodplain¹⁷. Confirm legal access and whether the connecting road is county, city or state maintained; a new driveway on a state highway has its own application requirement¹⁸. For a private well, Kentucky requires a certified driller but no property-owner permit application or fee for construction or abandonment¹¹. Budget around a 0.7% effective property-tax rate and a $1,215 median annual property-tax bill, while verifying the actual parcel assessment and exemptions¹⁴.