Off-grid site report

Hamblen County, TN

36.1397, -83.2877 · 1,234 ft elevation

Read this before you act on anything below. This is my researched starting point for Hamblen County, TN, not legal advice and not a guarantee. Rules change, and the deciding facts on any specific parcel (setbacks, perc results, overlay districts, deed restrictions, road frontage) live at the county or town office, not in any database. Before you buy land or build, confirm the current rules directly with the local zoning and health offices - the sources on this page tell you exactly who to call.

The local rulesHamblen County, TN

Zoning & raw-land occupancy

RestrictedHamblen County has countywide zoning administered by the Planning & Zoning Office; if a use isn't listed for your zone it's not allowed, so raw-land occupancy depends on your parcel's zone. source

Dwellings, tiny homes & RVs

Unclear - verifyNo official Hamblen County page addresses tiny homes on wheels or RVs as dwellings specifically; the zoning code limits one principal building per lot, and confirmation should come directly from Planning & Zoning.

Building permits & codes

RestrictedHamblen County adopted the 2018 IRC and related codes in 2022 via the County Legislative Body, and building permits are required through Planning & Zoning/Building Inspections. source

Septic & composting toilets

RestrictedThe local health department septic office has closed; septic permits for Hamblen County are now issued directly by the state through TDEC's regional representative. source

Greywater reuse

Unclear - verifyNo Hamblen-specific greywater rule was found; it likely defaults to the state plumbing code baseline, which permits limited reuse but is rarely straightforward. Confirm with TDEC or the county building office.

Rainwater harvesting

Generally allowedNo Hamblen County ordinance restricting rainwater collection was found, so it appears to inherit the state's generally permissive baseline.

Private wells & water rights

Generally allowedNo county-specific well ordinance was found; wells fall under the state's licensed-driller requirements, though much of the county is also served by public utility districts.

Living disconnected from utilities

Varies locallyBecause Hamblen has adopted the full IRC/IPC/IMC code suite, any permitted dwelling needs code-compliant water/sewage, typically a TDEC-permitted septic system or utility hookup; electrical disconnection isn't restricted by any found ordinance. source

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 4.9 hrs/day
Worst month (sizes an off-grid array): 3.3 hrs/day
Yearly output per 1 kW of panels: 1,358 kWh

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Weather1991-2020

Precipitation: 45 in/yr
Snowfall: 12 in/yr
Heating degree days: 4,142 (moderate)
Frost-free season: Apr 16 to Oct 23

How far help isstraight-line

Hospital Morristown-Hamblen Healthcare Center: 5.2 mi
Fire station South Hamblen County Volunteer Fire Department: 1.5 mi
Hardware store Harbor Freight Tools: 5.0 mi
Grocery Food City: 5.2 mi

From OpenStreetMap. Road miles will be longer, often much longer in hill country.

Plan this spot

These open with this location's real numbers already filled in (ZIP 37813).

Size a solar system Heat loss & insulation Firewood per winter Rainwater harvest Garden size Panel tilt

Sources: US Census Bureau geocoder; NLR PVWatts v8 (solar); NOAA NCEI 1991-2020 climate normals (nearest station) or Open-Meteo (ZIP-centroid) for weather; Open-Elevation; OpenStreetMap contributors. Public data retrieved Aug 21, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.