Tennessee
Buying Land in DeKalb County, Tennessee
County seat Smithville, in Middle Tennessee along the Caney Fork River and near Center Hill Lake. DeKalb County's own government confirms directly that it has not adopted countywide zoning, relying instead on the statewide building code it adopted in 2011. That puts DeKalb squarely in the unzoned half of Tennessee counties -- here's what that actually changes, and doesn't change, for a land buyer.
No countywide zoning, confirmed directly by the county
DeKalb County's own government is unusually direct about its zoning status: its planning page states outright that the county does not have zoning at this time. That's a clean confirmation rather than an assumption based on the statewide pattern described on our Tennessee page, where roughly half of the state's 95 counties haven't adopted the County Zoning Enabling Act's optional zoning framework. For unincorporated DeKalb County land, there is no zoning district to research, no allowed-use table to check, and no zoning-based restriction on lot size or setbacks from the county itself.
That absence of zoning doesn't mean no rules apply at all. DeKalb County adopted the State of Tennessee Building Codes as of January 2011, and building permits for unincorporated county land are administered directly by the county government -- the county's site names a planning contact (reachable at 931-979-2170) for permit-related questions. And if a specific parcel sits inside Smithville or another incorporated town in the county, that municipality's own zoning ordinance -- separate from the county's lack of one -- would apply instead. Confirm a parcel's incorporated-or-unincorporated status before assuming county rules (or their absence) apply.
Center Hill Lake and the Caney Fork: a separate layer of rules
DeKalb County's geography includes frontage on Center Hill Lake, a large TVA/Army Corps of Engineers reservoir on the Caney Fork River, along with the free-flowing Caney Fork itself below the dam -- a genuinely popular destination for fishing, boating, and lake-house buyers. Any parcel bordering the lake or the river's Corps-managed shoreline is subject to Army Corps of Engineers shoreline-management rules and any applicable TVA regulations independent of DeKalb County's own zoning status; these can restrict dock construction, vegetation clearing near the shoreline, and building setbacks from the water's edge regardless of what the county itself would otherwise allow. Confirm shoreline-management-plan status directly with the Army Corps' Center Hill office for any lakefront parcel before assuming county-level rules are the only ones that apply.
Away from the lake, DeKalb County's land market is otherwise a fairly typical Middle Tennessee mix of pasture, small farms, and wooded acreage, with Smithville serving as the county's commercial and government center. The town is also home to the long-running Smithville Fiddlers Jamboree, a well-known regional folk-music festival held each summer -- worth knowing as local color, though this research pass did not find land-use implications from the event comparable to a permanent, litigated venue situation like Coffee County's Bonnaroo farm.
Septic, water rights, and the rest of the state framework
Septic permitting in DeKalb County follows the statewide TDEC Rule 0400-48-01 standard described on our Tennessee page, handled locally by the DeKalb County Health Department in Smithville (615-597-7599), which also runs a dedicated well-and-septic services line for site evaluations and permitting questions. Confirm current processing times and any site-specific soil requirements directly with that office, particularly for parcels with rockier or thinner Highland Rim soils common in parts of the county.
Water rights in DeKalb County follow the same statewide riparian, reasonable-use doctrine as the rest of Tennessee -- relevant for any parcel drawing irrigation or domestic water from the Caney Fork, Center Hill Lake, or a shared aquifer, where a neighboring landowner's existing use is worth asking about directly. And as in every Tennessee county, an established farm operation here gets the Right to Farm Act's one-year nuisance-suit presumption, worth keeping in mind if you're buying land near an existing agricultural operation.
Who to Call Before Buying Land in DeKalb County
Any parcel bordering Center Hill Lake or the Corps-managed portion of the Caney Fork River is subject to separate Army Corps of Engineers shoreline-management rules independent of the county's own zoning status -- confirm directly with the Corps' Center Hill office before planning dock, clearing, or shoreline construction.
Other
DeKalb County Building Department / Planning
Building permits under the state building code (adopted 2011) for unincorporated county land; confirming the absence of zoning for a specific parcel.
Septic / Onsite Wastewater
DeKalb County Health Department
Septic system site evaluations and permits, and well-water questions, under the statewide TDEC standard.
Recorder / Clerk / Land Records
DeKalb County Register of Deeds
Recorded deeds, easements, and title history for a specific parcel.
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Get local guidanceSources
- Zoning and Planning — DeKalb County, Tennessee (accessed 2026-09)
- DeKalb County Building Department — DeKalb County, Tennessee (accessed 2026-09)
- DeKalb County, Tennessee — Wikipedia (accessed 2026-09)
- DeKalb County Health Department — DeKalb County, Tennessee (accessed 2026-09)
Last reviewed 2026-09