RSO vs LARSO vs AB 1482: Which Tenant Protection Regime Actually Covers Your Unit

“RSO” and “LARSO” are the same thing, two informal names for the Los Angeles Rent Stabilization Ordinance, codified at LAMC §§ 151.00 et seq. The ordinance was enacted in 1979 and covers most multi-unit residential buildings built before October 1978 inside the City of LA. It is one of the strongest rent stabilization regimes in the country.

AB 1482 is something different. It is the California Tenant Protection Act of 2019, a STATEWIDE law that covers most rental units more than fifteen years old, including many single-family homes and condos owned by corporations. AB 1482 lives in Civil Code §§ 1946.2 and 1947.12.

Both regimes do the same two things, cap rent increases and require just cause for most evictions, but they apply to different sets of units, with different rules. For any given LA rental, the question is which one (or both) applies, and which set of protections controls. Understanding the distinction is the foundation of every tenant defense in LA.

We represent tenants exclusively. Coverage analysis is the first thing we run on any case.

RSO / LARSO, the LA City Rent Stabilization Ordinance

LAMC §§ 151.00 et seq. is administered by the LA Housing Department (LAHD). It applies if all three are true: (a) the property is inside City of LA boundaries (not unincorporated LA County, not other incorporated cities); (b) it is a multi-unit residential property with two or more units, and (c) the Certificate of Occupancy was issued on or before October 1, 1978. Substantially rehabilitated buildings (after specific city approval) and certain government-subsidized units are excluded.

Covered units have their rent increases capped at an annual percentage published by LAHD (historically 3-8%, with the recent year’s cap available on the LAHD website). Just cause is required for any eviction, fourteen statutory grounds at LAMC § 151.09(A). For no-fault evictions (owner move-in, Ellis Act withdrawal, demolition, government order), the landlord must pay relocation assistance under LAMC § 151.09(G), with amounts varying by tenant status and recently running roughly $9,000 to $22,500.

One often-overlooked LARSO requirement: annual registration with LAHD. A landlord whose registration has lapsed cannot collect rent during the lapse and cannot evict during the lapse. CC § 794.4(B) makes this an affirmative defense, see our LARSO failure-to-register page. Full LARSO coverage is on the main LARSO page.

AB 1482, the California Tenant Protection Act

Civil Code §§ 1946.2 (just cause) and 1947.12 (rent cap), enacted by AB 1482 in 2019. The coverage threshold is fifteen years of age, rolling. Any rental unit older than fifteen years from today’s date is presumptively covered statewide unless an exemption applies. Key exemption: single-family homes and condos owned by a natural person (not a corporation, REIT, or LLC with a corporate member) AND covered by the specific statutory notice in the lease under CC § 1946.2(e)(8)(B). The notice requirement is strict, generic lease boilerplate that doesn’t include the precise statutory language does not preserve the exemption.

Rent increases are capped at 5% + regional CPI per twelve months, with an absolute 10% ceiling. Just cause is required after twelve months of tenancy. For no-fault terminations, the landlord must offer one month’s rent in relocation (paid directly or waived from the final month’s rent) under CC § 1946.2(d)(3). Full coverage is on the AB 1482 page.

Where they overlap, and which wins

When both LARSO and AB 1482 cover the same unit, the stricter rule wins. For a pre-1978 multi-unit building inside LA City, both technically apply, but LARSO is almost always stricter in practical terms, lower rent cap, more enumerated just causes, higher relocation. AB 1482 sits dormant beneath, available as a backup analysis if LARSO coverage is somehow defeated.

For a single-family home in LA owned by an LLC, LARSO usually does not apply (it is a single unit) but AB 1482 does (over 15 years old, corporate-owned, no qualifying notice exemption). For a brand-new apartment built in 2018 inside LA City, neither applies, the unit is too new for both regimes.

What about LA County and other LA-area cities?

LA County has its own ordinance for unincorporated areas (East LA, Altadena, Hacienda Heights, and similar communities) — see our LA County rent stabilization page. Several incorporated cities have their own rent stabilization regimes that operate independently of LARSO: West Hollywood, Santa Monica, Beverly Hills (Chapter 5 RSO), Inglewood, Culver City, Pasadena (limited), Glendale (limited). Each has its own coverage triggers and substantive rules, the analysis is city-by-city.

How to determine your coverage

The fastest path is the LAHD portal lookup for City of LA addresses, confirms LARSO coverage and current registration status. For age determination on AB 1482, LADBS records show the Certificate of Occupancy date. For ownership analysis on the single-family / condo exemption to AB 1482, the LA County Assessor records the registered owner, an LLC or corporate name there usually defeats the exemption regardless of who lives in or manages the property.

What this means in practice

For most LA tenants facing eviction, the strongest defenses live in LARSO. The just-cause list is the longest, the relocation amounts are the largest, the registration requirement creates the most reliable single-issue defense, and the rent caps run the tightest. Where LARSO doesn’t reach, newer buildings, single-family homes, AB 1482 is the next layer of analysis. Where neither applies, the tenant’s defenses narrow to the universal grounds: defective notice, improper service, habitability offset, retaliation, and the federal anti-discrimination framework.

Related pages

• LARSO (LA City Rent Control)
• AB 1482 Just-Cause
• LA County Rent Stabilization
• LARSO Failure-to-Register Defense
• Owner Move-In Defects
• Ellis Act Eviction Defense