Off-grid site report
Lassen County, CA
39.7566, -120.0833 · 4,925 ft elevationRead this before you act on anything below. This is my researched starting point for Lassen County, CA, 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 rulesLassen County, CA
Zoning & raw-land occupancy
RestrictedLassen County's Title 18 zoning ordinance generally allows one single-family dwelling by right in agricultural zones like A-1; more units or other uses require a use permit and often CEQA review, per the Department of Planning and Building Services. source
Dwellings, tiny homes & RVs
RestrictedCounty code bars placing manufactured/mobile homes over twenty years old and requires engineer-approved foundations or approved skirting outside mobile home parks. Rules for RVs/tiny homes as residences were not confirmed in county sources; ask Planning and Building Services. source
Building permits & codes
RestrictedLassen County has adopted its own building code chapter (Title 12) layered on the state Title 24 standards, and all new construction needs a permit and inspection through Planning and Building Services. source
Septic & composting toilets
RestrictedThe county's Environmental Health Division (Liquid Waste Program) permits and inspects septic systems under a Lahontan Regional Water Board-approved Local Area Management Plan that sets standards beyond the state OWTS policy. Composting toilet rules specifically were not confirmed. source
Greywater reuse
Generally allowedNo Lassen County ordinance was found that diverges from the state Plumbing Code Chapter 15 greywater exemption; larger systems go through the county building permit process. Not confirmed whether the county has added stricter local standards.
Rainwater harvesting
Generally allowedNo county ordinance restricting rooftop rainwater capture beyond the state Rainwater Capture Act was found. Not confirmed whether the county requires any additional permit.
Private wells & water rights
RestrictedLassen County requires a permit from the county health officer before any well construction, repair, modification, or destruction, following state DWR well standards, and the health officer may impose stricter local rules. A separate county ordinance also requires a permit to export groundwater out of the county. source
Living disconnected from utilities
Unclear - verifyNo county ordinance directly addresses disconnecting from grid utilities. Habitability requirements under the county building code (approved sanitation and water source) still apply regardless of grid connection status, per Planning and Building Services. source
Sun30-year normals
- Peak-sun hours, annual average
- 6.1 hrs/day
- Worst month (sizes an off-grid array)
- 3.9 hrs/day
- Yearly output per 1 kW of panels
- 1,701 kWh
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Weather1991-2020
- Precipitation
- 14 in/yr
- Snowfall
- 34 in/yr
- Heating degree days
- 7,154 (cold)
How far help isstraight-line
- Hospital
ER at McCarran NW - 19.5 mi
- Fire station
Loyalton Volunteer Fire Department - 10.1 mi
- Hardware store
Sierra Valley Home Center - 10.2 mi
- Grocery
Leonard's Grocery - 10.1 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 96105).
Size a solar systemHeat loss & insulationFirewood per winterRainwater harvestGarden sizePanel tilt
Looking at a specific parcel in Lassen County, CA?The rules above are the jurisdiction. The land check runs the parcel itself: flood zone, soils and septic suitability, wetlands, slope, access, climate, and these verdicts, from a parcel number or coordinates.
Check a parcel →Share or save this report:New report
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.
New here, or not sure where this fits? Start here walks through the whole thing in order.