Los Angeles rent rules: RSO, County RSTPO, and how to tell which one applies

Two separate questions determine what applies to a rental unit, and they don't have to be answered by the same authority: what caps a rent increase (a local ordinance, the statewide Tenant Protection Act, or nothing, because the unit is exempt from all three) and what governs eviction, which can be a local just-cause ordinance, the statewide Act's own just-cause provisions, or both. A property can be exempt from one and still covered by the other.

LA County's own Rent Stabilization and Tenant Protections Ordinance (RSTPO) shows this directly. The County's coverage chart splits unincorporated-area units into fully-covered units (rent-restricted and eviction-protected, generally requiring a certificate of occupancy issued on or before February 1, 1995) and partially-covered units, which get eviction protection only and carry no construction-date cutoff at all. A newer unincorporated-County rental can sit outside the rent cap and still be covered by the eviction rules.

The same split holds outside Los Angeles too. Long Beach repealed its own rent ordinance in 2019, so rent increases there are governed by the statewide Act alone. But the City kept its separate Just Cause for Termination of Tenancies Ordinance (Municipal Code Chapter 8.99), which can still cover units the statewide Act exempts from rent caps entirely. A jurisdiction with no local rent ordinance isn't necessarily less regulated. It's simply more exposed to statewide changes, since the statewide Act becomes the only backstop instead of a locally set one.

Jurisdiction itself is set by the property's physical location, not its mailing address. A parcel addressed "Los Angeles" can sit inside the City limits under RSO, in unincorporated County territory under RSTPO, or inside a separate incorporated city entirely. The way to determine which one actually applies is to pull the Assessor's Parcel Number (APN) and check it against the real jurisdiction boundary, not the ZIP code or the city name on the mailing address.

Within whichever jurisdiction applies, coverage also depends on the building's construction date, and the cutoff differs: City RSO generally covers units first built on or before October 1, 1978, while County RSTPO's fully-covered tier uses the February 1, 1995 certificate-of-occupancy cutoff instead. Where a local ordinance covers a unit, it governs instead of the statewide cap. The two don't stack.

The landscape also changes. LAHD amended its RSO annual increase formula effective February 2, 2026, removing an additional percentage previously tied to utility costs and an additional increase previously allowed for each dependent added to a tenancy. Confirm the applicable formula, percentage, and coverage rules on LAHD's or the County's current page for the specific unit and date, not from a prior cycle.