Tennessee
Buying Land in Union County, Tennessee
County seat Maynardville, wrapped around a substantial stretch of Norris Lake shoreline and bordering Big Ridge State Park and the Chuck Swan State Forest and Wildlife Management Area. Union County has zoning and subdivision regulations on the books -- and for lakefront land, TVA's own shoreline rules layer on top of whatever the county allows.
Zoning and subdivision rules: confirm the current district
Union County maintains its own zoning and subdivision framework, and this research pass found the county's subdivision regulations posted directly on its own site in a version dated 2023, alongside a countyzoning.org listing indicating the county is zoned. What this pass could not fully verify is the current, detailed content of the zoning resolution itself -- specific district names, minimum lot sizes, and setback requirements -- so rather than guess, this page directs buyers to the county planning office for a written determination on any specific parcel before finalizing plans for a home site or a subdivision.
Given Union County's genuine lake-and-recreation market described below, pay particular attention to how the zoning resolution treats short-term rental use, dock and boathouse structures, and minimum lot sizes for lakefront parcels specifically -- rules for lakefront land often differ meaningfully from the county's general rural-residential districts.
Norris Lake and a real cluster of public recreational land
Union County fronts a substantial share of Norris Lake, the large Tennessee Valley Authority reservoir on the Clinch and Powell rivers that also touches Anderson, Campbell, Claiborne, and Grainger counties. Norris Lake is one of East Tennessee's most popular lake destinations for boating, fishing, and lake-house living, and Union County's shoreline is a real driver of local land value -- lakefront and lake-view parcels here routinely command a premium over comparable inland acreage. The county also sits near Big Ridge State Park and the large Chuck Swan State Forest and Wildlife Management Area, giving the area a genuine cluster of public recreational land beyond the lake itself, which supports demand from hunters and outdoor-recreation buyers as well as lake-focused ones.
The important wrinkle for any lakefront parcel: because TVA owns and manages Norris Lake's water levels and much of its immediate shoreline under federal authority, TVA's own shoreline management rules govern things like docks, boathouses, shoreline stabilization, and vegetation management independent of whatever Union County's zoning resolution allows. A property that looks straightforward on a plat can still require a separate TVA permit for anything that touches the lake itself -- confirm both layers of approval before assuming a lakefront improvement is a simple county-permit matter.
Septic, water, and the rest of the state framework
Outside zoning and the lake-specific rules above, Union County follows Tennessee's statewide septic framework described on our Tennessee state page: TDEC's Rule 0400-48-01 sets the technical standard for any parcel not on municipal sewer, with day-to-day permitting handled locally. This research pass did not turn up a specific department name or phone number strong enough to publish with confidence, so this page directs buyers to the county government's main line to be routed to whichever office currently handles septic site evaluations and construction permits -- and for lakefront parcels, ask specifically about setback distances from the lake's shoreline, since those can be stricter than a standard inland setback.
Water rights, manufactured-home regulation, right-to-farm protection, and agritourism liability all follow Tennessee's statewide framework -- nothing found in Union County's own ordinances alters any of those. For a rural interior parcel away from the lake, Union County offers a genuinely quieter, lower-cost alternative to its faster-growing Knoxville-area neighbors, worth weighing against the longer commute.
Who to Call Before Buying Land in Union County
Direct WebFetch to unioncountytn.gov was blocked by network egress restrictions in this research session, so several details reflect search-indexed content rather than a full verbatim site read -- confirm current zoning-district specifics, fees, and TVA shoreline permitting requirements directly before relying on this page.
Planning & Zoning
Union County Planning and Zoning
Zoning district lookups, subdivision regulations, and short-term-rental or lakefront-specific rules.
Other
Tennessee Valley Authority, Shoreline Management
Dock, boathouse, and shoreline-alteration permitting for parcels fronting Norris Lake.
Septic / Onsite Wastewater
Union County government (main line)
Being routed to the correct office for septic (subsurface sewage disposal) permitting -- this pass could not confirm a specific office name with confidence.
Recorder / Clerk / Land Records
Union County Register of Deeds
Recorded deeds, easements, and plats.
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Get local guidanceSources
- Subdivision Regulations, Union County, Tennessee (2023) — Union County, Tennessee (accessed 2026-09)
- Union County Zoning (Tennessee) — countyzoning.org (accessed 2026-09)
- Norris Lake — Wikipedia (accessed 2026-09)
- About – Union County Tennessee — Union County, Tennessee (accessed 2026-09)
Last reviewed 2026-09