How California's rent cap and just cause rules work
There is a statewide cap on increases and a statewide just cause requirement, plus stricter local ordinances in some cities. Exemptions are the part people get wrong.
California has two overlapping systems. A statewide law sets a floor of protection everywhere, and a number of cities have their own stricter ordinances layered on top. Where both apply, the stricter generally governs.
The rent cap
For covered properties, annual increases are capped by a formula tied to inflation with a hard ceiling. The cap applies per twelve-month period and limits the number of increases as well as their size.
It does not apply to a vacant unit. Rent can generally be reset at market on a new tenancy, which is why turnover matters so much to the economics of covered buildings.
Just cause
Once a tenancy passes a qualifying duration, ending it requires stated cause. Causes divide into two kinds.
**At-fault** causes concern the tenant's conduct — non-payment, breach, nuisance. **No-fault** causes concern the owner's plans — owner move-in, withdrawal from the rental market, demolition or substantial remodel. No-fault terminations generally require relocation assistance.
“The distinction matters financially. A no-fault termination costs the owner money by design.”
Local ordinances
Several cities operate their own rent stabilisation with lower caps, broader coverage, registration requirements and their own boards. Where a local ordinance is stricter, it applies.
Practical points
- Owners claiming a single-family exemption must serve the required notice and keep proof of it.
- Check the local ordinance first; the statewide rules are the floor, not the answer.
- Document the basis for any termination contemporaneously.
- Tenants should check the construction date, since it determines coverage.
