Rent Control: Altadena vs Los Angeles
How do rent control rules compare between Altadena, CA and Los Angeles, CA?
Altadena and Los Angeles have similar restriction levels.
Altadena, CA
Los Angeles County
The LA County Rent Stabilization & Tenant Protections Ordinance (RSTPO) caps annual rent increases in covered Altadena multi-unit buildings (built before Feb 1, 1995) at 3% or 60% of CPI, whichever is lower (effective 2025).
View full Altadena rules →Los Angeles, CA
Los Angeles County
The LA Rent Stabilization Ordinance (LAMC Chapter XV) covers buildings with 2+ units built before October 1, 1978, approximately 650,000 units or 70% of rentals. Annual rent increases are tied to CPI, currently 3% (July 2025-June 2026). Effective Feb 2026, the formula changes to 90% of CPI with a 1%-4% range and no utility surcharges. Single-family homes are exempt.
View full Los Angeles rules →Key Facts Comparison
| Fact | Altadena | Los Angeles |
|---|---|---|
| Authority | LA County RSTPO (Ch. 8.52) | - |
| Cap (2025) | 3% or 60% CPI (lower) | - |
| Coverage | Multi-unit built pre-Feb 1, 1995 | Buildings built before Oct 1, 1978 |
| Small Landlord Bonus | +1% | - |
| Admin Agency | LA County DCBA | - |
| Current Increase | - | 3% (July 2025-June 2026) |
| New Formula | - | 1%-4% range effective Feb 2026 |
| Units Covered | - | Approx. 650,000 units |
| Code Section | - | LAMC Chapter XV |
Highlighted rows indicate differences between cities.
Altadena FAQ
Is Altadena under rent control?
Yes — covered multi-unit rentals built before Feb 1, 1995 are limited to 3% (or 60% of CPI) annual increases under the LA County RSTPO.
Los Angeles FAQ
Is my apartment rent-controlled?
Buildings with 2+ units built before October 1, 1978 are covered. Check LAHD's ZIMAS system for your address.
How much can my rent go up?
Annual increases are capped at 3 to 8% based on CPI. Your landlord must provide 30-day notice.
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