Off-grid living in California: a property guide
California’s statewide codes and environmental policies are only the frame. Cities, counties, well authorities, local wastewater programs, regional water boards, fire maps, utilities, and recorded restrictions can all change the answer.
The California permission stack
Clear every layer that touches the plan.
- 01Land useCity / county
Local zoning, legal parcel, allowed dwelling, density, setbacks, coastal or other overlays.
- 02Building & occupancyBuilding department
Current California standards, local permits, inspections, energy and final approval.
- 03WaterLocal enforcing agency
Local well permit or service; construction standards; quality, yield and drought proof.
- 04WastewaterLocal + regional
State OWTS tier, local LAMP, regional board conditions, soil, design and reserve area.
- 05Hazard & private controlsMultiple authorities
Wildfire zone, flood, access, defensible space, title, easements and association rules.
Rural does not mean permit-free.
California’s building baseline says structures generally require a permit from the building official. Well construction is administered locally. Onsite wastewater is implemented through a tiered state policy and local programs. Even a technically self-sufficient house still needs a lawful residential use and an occupancy path.
Start with the local planning counter, not the solar design.
The California Building Standards Code provides the construction baseline, while the permit is obtained from the responsible local building department. Land-use approval remains a distinct local question: whether this parcel may host this dwelling, at this location, for this occupancy.
Governing jurisdiction, zoning and overlays, legal-lot status, dwelling class and count, setbacks, grading, driveway and fire access, required permits, adopted code cycle and the final occupancy document.
California delegates well permits to local enforcing agencies.
DWR states that cities, counties, or water agencies regulate well construction, alteration and destruction through local ordinances that meet or exceed state well standards. The responsible agency commonly sits in environmental health or a water district.
Permit authority, ordinance, setbacks, approved location, driller and completion record.
Depth, aquifer, expected yield, seasonal reliability, lab quality, treatment and replacement cost.
A seller’s statement that “wells are allowed” proves neither set.
Find California’s local well authorityThe county’s LAMP may matter more than a generic septic rule.
The State Water Board’s OWTS Policy uses risk-based tiers. Local agencies may implement Regional Water Board-approved Local Agency Management Programs, and properties near specified impaired waters can face added Tier 3 treatment, monitoring, or oversight.
Obtain the parcel’s tier, local design criteria, soil evaluation, system and reserve layout, setbacks, permit, operating duties and sewer-connection implications before treating the site as buildable.
Open the 2023 OWTS policy hubThe hazard map can change design, clearance, access, cost, and insurance.
CAL FIRE maps Fire Hazard Severity Zones using long-term physical conditions that influence fire likelihood and behavior. State Responsibility Areas and designated zones trigger wildfire-protection construction and defensible-space considerations.
Check the current state and local FHSZ maps, then ask the building and fire authorities about ignition-resistant construction, vegetation zones, road width, grade, gates, bridges, turnarounds, water supply and emergency response.
A manufactured home and a structure built in a factory do not share one permit path.
HCD administers specified manufactured-home permits and inspections, while factory-built housing installation remains subject to local building inspection. Alteration, installation, site work, foundation, zoning and utilities must be mapped to the exact product.
Record the label, serial, manufacturer, age, alteration history, title status, destination design criteria, licensed-installer requirement, state/local division of responsibility and final inspection path.
No statewide “private land” answer clears RV residence.
The sources reviewed do not establish a blanket right to occupy an RV year-round on any California parcel. Local rules may distinguish storage, occasional camping, temporary construction occupancy, caretaker use, park use and permanent residence.
Name the RV, occupants, dates, principal use, construction status, hookups, water source and complete sewage arrangement. Require a written response from planning and environmental health, then check title restrictions.
Hauled water
A licensed delivery is not the same as an approved primary supply.
California requires a state license for businesses hauling bulk potable water for drinking, culinary, or other ingestible uses. That protects the hauling activity. It does not establish that a county or building department will approve hauled water as the permanent residential source for this parcel.
- Get the land-use/building authority’s acceptance in writing.
- Document an approved source and licensed hauler.
- Design sanitary storage, refill access, treatment and cross-connection protection.
- Model annual volume, delivery interruption, wildfire access and cost.
California buyer file
Evidence to make a parcel defensible
Exact project, zone, overlays, use, dwelling count, setbacks and occupancy.
Building, grading, fire, driveway, water, sewage, trade inspections and final signoff.
Service or local well approval plus yield, quality, storage and drought evidence.
Tier/LAMP, soil, design, reserve area, impaired-water and operating requirements.
Fire zone, flood, drainage, slope, geotechnical, access and insurability screens.
Legal access, easements, covenants, association rules and utility obligations.
Source trail
Official evidence reviewed
Checked September 26, 2026. Agency guidance explains administration; statewide policy supplies the framework; local and parcel evidence still controls applicability.