Off-grid site report

Box Elder County, UT

41.5060, -112.0269 · 4,364 ft elevation

Read this before you act on anything below. This is my researched starting point for Box Elder County, UT, 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 rulesBox Elder County, UT

Zoning & raw-land occupancy

RestrictedBox Elder County regulates land use countywide in unincorporated areas through its Land Use Management & Development Code, so raw-land occupancy is zone-specific, not a default-open situation. Incorporated towns have their own separate zoning. source

Dwellings, tiny homes & RVs

RestrictedThe county evaluates tiny homes and RVs case by case: foundation-built tiny homes follow the state construction code as dwellings, while RVs need zoning allowance and utilities. Towns like Plain City set their own RV-occupancy limits that override county rules inside city limits. source

Building permits & codes

RestrictedThe county's Building Permits/Inspections office, under the Chief Building Official, enforces the state construction code and ties permit issuance to lot zoning conformity. source

Septic & composting toilets

RestrictedThe Bear River Health Department, not the county directly, administers septic permitting for Box Elder County, requiring a permit before construction, alteration, or repair where sewer isn't available, based on soil and site conditions. Composting toilets are not confirmed either way. source

Greywater reuse

Unclear - verifyNo Box Elder County or Bear River Health Department-specific greywater ordinance was found; the state's general permitting framework likely applies but this isn't confirmed locally. Ask BRHD directly.

Rainwater harvesting

Generally allowedNo county-specific restriction on rainwater harvesting was found, so the state's general allowance appears to apply without local modification.

Private wells & water rights

RestrictedBox Elder County falls largely within Water Right Area 29, where the Utah Division of Water Rights has at times closed or restricted new groundwater appropriations beyond a small single-family allowance. New wells still need a water right and Start Card, but expect added scrutiny here. source

Living disconnected from utilities

Unclear - verifyNo standalone off-grid or disconnected-utilities ordinance was found for the county; practically, occupancy sign-off seems to assume an approved water source and septic system, but this isn't a confirmed standalone rule.

Open the full county page with sources →

Sun30-year normals

Peak-sun hours, annual average: 5.3 hrs/day
Worst month (sizes an off-grid array): 2.9 hrs/day
Yearly output per 1 kW of panels: 1,463 kWh

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Weather1991-2020

Precipitation: 17 in/yr
Snowfall: 40 in/yr
Heating degree days: 6,423 (cold)
Frost-free season: May 14 to Sep 29

How far help isstraight-line

Hospital Brigham City Community Hospital: 1.0 mi
Fire station Box Elder County Fire District: 0.3 mi
Hardware store Southfork Hardware: 0.6 mi
Grocery Smith's: 0.5 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 84302).

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 22, 2026; agencies update their layers on their own schedules. Planning data, not a survey or legal advice.