Buying land in California: what's different from other states
In California the permit, not the deed, decides what a parcel is worth — and the permit answer sits across four different agencies.
California land rarely fails on title. It fails on entitlement: whether the parcel is legally created, whether the county will let you build on it, whether there is water, and what wildfire and environmental review will cost you before a shovel moves.
Is the parcel legal? The Subdivision Map Act
Thousands of California parcels were split by deed rather than by an approved map. Under the Subdivision Map Act an illegally created parcel can be denied permits outright until it is cured, often with a certificate of compliance. Ask the county for the parcel's legal status before you assume an APN means a building site.
Water: wells, SGMA and adjudicated basins
Groundwater is managed basin by basin under the Sustainable Groundwater Management Act, and some basins are adjudicated with pumping allocations attached. New well permits are restricted or moratoriumed in parts of the Central Valley and elsewhere. Confirm the basin, its groundwater sustainability agency, and current well-permit practice with the county environmental health department.
Williamson Act contracts
Agricultural land under a Williamson Act contract is taxed on use value in exchange for a restriction that renews automatically every year. Getting out means a nine- or ten-year non-renewal wind-down, or cancellation with a fee near 12.5% of market value. Confirm enrollment from the assessor and read the contract before you plan a change of use.
Wildfire, CEQA and the permit path
CAL FIRE fire hazard severity zones drive defensible space, Chapter 7A construction standards, road and water-supply requirements, and insurance availability. Discretionary approvals trigger CEQA review, which adds time and cost. And septic is governed by the state OWTS policy as implemented locally, so a percolation result is only useful under the county's current rules.
Taxes reset on transfer
Under Proposition 13 the assessed value resets to purchase price on a change of ownership, so the seller's tax bill tells you nothing about yours. Underwrite the parcel at your own purchase price, plus any Mello-Roos or assessment district charges recorded against it.
- Confirm the parcel was legally created under the Subdivision Map Act.
- Check the groundwater basin, its GSA and county well-permit practice.
- Look for a Williamson Act contract and price the exit.
- Pull the fire hazard severity zone and price insurance and 7A construction.
- Underwrite taxes at your purchase price, not the seller's assessment.
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