Unincorporated Calloway County, Kentucky appears to require building permits; ask the Local Building Inspector which projects are covered.12 Countywide zoning remains unconfirmed, while Murray has its own building-permit and zoning rules.345 Septic site evaluations and construction permits come from the Calloway County Health Department, including interim private systems inside Murray where public sewer is unavailable.678
At a glance
- Building permit
- Confirm with the local inspector; the available county material does not publish the complete scope19
- Zoning
- Countywide zoning could not be confirmed; subdivision rules still apply310
- Septic
- Site evaluation, permit and installation inspection required711
- RV living
- Long-term occupancy on private land is unconfirmed; ask the local inspector12
- Tiny home
- No county-specific occupancy or minimum-size rule was confirmed3
- Owner-builder
- Conditional homeowner plumbing permit; no general building-permit exemption confirmed13
- Private well
- No owner permit application or fee for well construction or abandonment; certified driller required14
Who to call
Building permits
Local Building Inspector — K&S Building Ins. LLC
New building inspections in Calloway County
Septic permits
Calloway County Health Department
Site evaluations, permits and inspections for onsite wastewater systems
602 Memory Lane Murray, Ky 42071
Floodplain permits
Calloway County Floodplain Officer
Local floodplain questions and development-permit coordination
Contact details are copied from each office’s official page and were checked against it on October 12, 2026.
Off-grid gear
Going off-grid in Calloway County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit 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 stage.1 Kentucky adopted the 2018 Kentucky Building Code and 2018 Kentucky Residential Code, and Calloway County administers them locally through its listed building inspector.15 Local inspection applies to single-family homes where the local inspection program applies.9
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 one.16 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 office.2
Who issues building permits and inspections in Calloway County?
For unincorporated Calloway County, start with the Local Building Inspector at K&S Building Ins. LLC, the county’s listed contact for new building inspections.2 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 Official.4 Septic approval stays with the Calloway County Health Department, including interim private systems inside Murray where public sewer is unavailable.678
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 record.1017 The county subdivision regulations exclude territory regulated, or permitted to be regulated, by Murray.10
Does Calloway County have zoning?
We could not confirm a countywide zoning ordinance for unincorporated Calloway County or an official statement that the county has no zoning.3 Inside Murray, the city administers its own zoning code and map; those city rules do not establish the rules for unincorporated land.5 Septic site approval remains with the Calloway County Health Department, including interim private systems inside Murray where public sewer is unavailable.68
Calloway County still requires Fiscal Court approval for covered subdivisions, and land within the floodway may not be platted for residential occupancy or building sites.1018 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.32
How do septic permits work in Calloway County?
The Calloway County Health Department decides whether site and soil conditions are suitable for an onsite wastewater system.6 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 system.7 The system is inspected during installation for compliance with Kentucky regulations.11
Call before choosing a house site: only 1.5% of mapped county soils lack severe limitations for a conventional septic drain field.19 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 system.20
Can you live in an RV or tiny home in Calloway County?
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 use.2 Kentucky’s exclusion of event-related RV parking from campground regulation for up to 30 days does not authorize residential RV use.21
We also could not confirm a Calloway County tiny-home occupancy or minimum-size rule.3 Ask the Local Building Inspector how the proposed unit is classified and what inspections apply.2 If the unit will use onsite sewage, obtain the Calloway County Health Department’s site evaluation and construction permit before installation.7
Building a home in Calloway County: what are the steps?
- 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 inspections.2
- If creating or changing lots, resolve Fiscal Court plat approval and recording before transfer or construction dependent on the plat.17
- Have the Calloway County Health Department evaluate the site and obtain the Permit to Construct before septic work begins.7
- 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 compliance.13 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 exemption.13
- If the site is in an identified floodplain, obtain both state and local floodplain permits before development.22
- Apply in writing to the state highway district engineer before adding a farm or single-family driveway on a state right-of-way.23
What should you check before buying land in Calloway County?
Put septic suitability near the top of due diligence because only 1.5% of mapped soils avoid a severe conventional-drain-field limitation.19 Ask for the health department evaluation before treating a proposed homesite as buildable.6
Check the flood map and contact the county Floodplain Officer if any proposed driveway, fill, utility or structure is in a mapped floodplain.24 Kentucky requires both state and local permits for development in an identified floodplain.22 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 requirement.23 For a private well, Kentucky requires a certified driller but no property-owner permit application or fee for construction or abandonment.14 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 exemptions.2526
Watch-outs
- A local inspector is listed, but the available official material does not publish a complete building-permit scope; call before construction or material delivery.12
- Countywide zoning, long-term RV occupancy, tiny-home standards and minimum dwelling size remain unconfirmed; ask the Local Building Inspector before choosing a dwelling or temporary living arrangement.32
- A mapped floodplain project needs both state and local floodplain permits before development begins.22
Sources
- Kentucky Department of Housing, Buildings and Construction (DHBC) - Calloway County local inspector sheet (2026 county census)
- Local Building Inspector — K&S Building Ins. LLC (callowaycountyky.gov)
- (2026 county census)
- Murray: Murray Code § 156.076, Building Permits (Calloway County), quoted and re-checked
- Murray: Murray Code § 156.001, Title (Calloway County), quoted and re-checked
- Environmental Services, quoted and re-checked
- Environmental Services, quoted and re-checked
- Murray: Murray Code § 52.10, Mandatory Sewer Connections (Calloway County), quoted and re-checked
- Building Codes, quoted and re-checked
- Subdivision Regulations of Calloway County, Kentucky, quoted and re-checked
- Environmental Services, quoted and re-checked
- KRS 511.110 — Unlawful camping (Kentucky statewide rule), quoted and re-checked
- Department of Housing, Buildings and Construction frequently asked questions, quoted and re-checked
- Water Well Information for Home Owners (Kentucky statewide rule), quoted and re-checked
- Division of Building Code Enforcement, quoted and re-checked
- 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
- Subdivision Regulations of Calloway County, Kentucky, quoted and re-checked
- Calloway County Subdivision Regulations, Flood Protection, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- 815 KAR 20:130. House sewers and storm water piping; methods of installation (Kentucky statewide rule), quoted and re-checked
- KRS 219.410 — Exclusions for personal or farm use, festivals, and events (Kentucky statewide rule), quoted and re-checked
- Find Your Flood Zone (Kentucky statewide rule), quoted and re-checked
- 603 KAR 1:020 Driveway approaches, entrances; construction and maintenance (Kentucky statewide rule), quoted and re-checked
- Calloway County Floodplain Officer (callowaycountyky.gov)
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.