L.A. Mun. Code 151.00 et seq.

City of Los Angeles Rent Stabilization Ordinance (RSO)

The City of Los Angeles Rent Stabilization Ordinance limits yearly increases for most rental units built on or before October 1, 1978.

Caps by period

The cap that applies is the one in effect on the date the increase takes effect, not the date you serve the notice.

Increases taking effectCapHow it's set
Jul 1, 2026 – Jun 30, 20273%Effective Feb 2, 2026: 90% of average CPI, floor 1%, ceiling 4% (old rule 100% CPI, floor 3%, ceiling 8%). LAHD states the 7/1/26-6/30/27 annual increase is 3%. No utility add-on after Feb 2, 2026.

Who's covered

Rental property in the City of Los Angeles first built on or before Oct 1, 1978, plus certain replacement units (LAMC 151.28). Check ZIMAS Housing tab for RSO status.

Check a property's RSO status on ZIMAS (Housing tab).

Limits on how often

One increase in any 12-month period.

Notice

At least 30 days' written notice for increases of 10% or less over 12 months, 90 days above that (Civil Code 827). Mailed notices add 5 calendar days within California (Code of Civil Procedure 1013(a)).

Calculate an increase

Sources

Last verified Oct 18, 2026. Report an error.