If you own residential rental property in the City of Los Angeles in a building constructed on or before October 1, 1978, the Los Angeles Rent Stabilization Ordinance (LARSO) governs every rent increase you take, every eviction you serve, and every dollar you can lawfully collect. LARSO covers more than 624,000 rental units across the city under LAMC § 151.00 et seq. Property owners who skip annual registration, mishandle a just-cause eviction, or misapply the rent adjustment formula face civil penalties, treble damages, attorney fees under LAMC § 151.10, and the unenforceability of any rent increase taken during a registration lapse.
Borna Houman Law represents Los Angeles property owners, family trusts, real estate investors, and HOA boards in LARSO compliance, registration disputes, just-cause eviction filings, and Los Angeles Housing Department (LAHD) enforcement matters. We work with portfolios from a single Hollywood duplex to a Westside multi-property holding company.
Key Takeaway: LARSO covers Los Angeles rental units in buildings issued a Certificate of Occupancy on or before October 1, 1978, plus replacement units built after demolition of LARSO-covered properties. Landlords must register annually with LAHD, pay the per-unit fee (currently $77.78 per unit for 2026), follow the annual rent increase cap (3 percent or CPI, whichever is lower, plus surcharges), and use one of the twelve enumerated just-cause grounds for any eviction.
Which Los Angeles rental units fall under LARSO?
LARSO applies to rental units in residential buildings issued a Certificate of Occupancy on or before October 1, 1978, located within the City of Los Angeles boundaries. The City of Los Angeles boundary is the determinative jurisdictional fact — properties in West Hollywood, Beverly Hills, Santa Monica, Culver City, Glendale, Burbank, Pasadena, and unincorporated LA County are governed by their own ordinances or by California state law (AB 1482), not LARSO.
The Costa-Hawkins Rental Housing Act (Civ. Code § 1954.50 et seq.) creates statutory exemptions that LARSO must respect. Single-family homes and condominiums separately alienable from any other unit are exempt under Civ. Code § 1954.52(a). Vacancy decontrol applies — once a unit becomes vacant, the landlord may set the new rent at market under § 1954.53. The exception is so-called “Tashman units” where the prior rent was set under a relocation arrangement.
The pre-1978 / post-1978 distinction in practice
| Building Type | Coverage | Authority |
|---|---|---|
| Pre-Oct. 1, 1978 multi-family | Full LARSO | LAMC § 151.02(M) |
| Post-Oct. 1, 1978 multi-family | State AB 1482 only (5% + CPI cap, just cause) | Civ. Code § 1947.12, 1946.2 |
| Single-family home (separately alienable) | Costa-Hawkins exempt; AB 1482 exempt with notice | Civ. Code § 1954.52 |
| Condominium (separately alienable) | Costa-Hawkins exempt; AB 1482 exempt with notice | Civ. Code § 1954.52 |
| Hotel / motel (90+ days residency) | LARSO applies after 30 days | LAMC § 151.02(M)(2) |
| Replacement units after demolition | LARSO follows the prior unit | LAMC § 151.28 |
In our experience advising Westside and mid-LA owners, the most common compliance error involves single-family homes where the deed was historically held in a personal name but later transferred to an LLC or family trust. Costa-Hawkins exempts single-family homes that are “separately alienable from the title to any other dwelling unit.” Transferring title to an LLC does not destroy the exemption — but the AB 1482 exemption notice must be served on every tenant in 12-point font under Civ. Code § 1947.12(d)(5).
What does LARSO require for annual registration?
Every owner of a LARSO-covered unit must register annually with the Los Angeles Housing Department under LAMC § 151.05. The registration year runs January through April, with payment of the per-unit registration fee due by the deadline LAHD publishes each year. The 2026 fee is $77.78 per unit, with $25.45 passable to the tenant as a surcharge during a 12-month period and the balance absorbed by the owner.
Registration is a precondition to enforcing rent. LAMC § 151.05(A) provides that no rent increase is collectible during a period of non-registration, and rent that has been collected during such a period must be refunded to the tenant. The penalty is severe — a single year of skipped registration on a 12-unit building can extinguish thousands of dollars in collected rent.
The Rent Registry filing
Beyond annual registration, LAMC § 151.05(C) requires owners to file the Rent Registry — reporting current monthly rent for each unit, security deposit on file, and tenancy start date. The Rent Registry was implemented by ordinance 186756 in October 2020 and applies retroactively to most rental units. Failure to file the Rent Registry suspends the right to take rent increases under LAMC § 151.06.
How does LARSO limit annual rent increases?
The annual permissible rent adjustment is capped at the percentage change in CPI (Consumer Price Index for the Los Angeles-Long Beach-Anaheim region) for the prior year, with a floor of 3 percent and a ceiling of 8 percent under LAMC § 151.06. LAHD publishes the official adjustment percentage annually. The adjustment is taken with 30 days written notice to the tenant and may be taken once per 12-month period under LAMC § 151.06(B).
Three additional surcharges may be passed through. The Capital Improvement surcharge under LAMC § 151.07(A)(1)(a) allows pass-through of capital improvements amortized over 10 years (with prior LAHD approval). The Primary Renovation surcharge under § 151.07(A)(1)(b) allows pass-through of seismic retrofit and major rehabilitation costs (also requiring LAHD approval). The Surface Capital Improvement surcharge under § 151.07(A)(2) allows pass-through of routine improvements like roof or HVAC replacement at limited rates.
| Type of Increase | Cap | LAHD Approval Required? |
|---|---|---|
| Annual general adjustment | CPI-LA (3% floor, 8% ceiling) | No (but registration must be current) |
| Vacancy decontrol | Market rent on new tenancy | No (Civ. Code § 1954.53) |
| Capital improvement surcharge | Amortized over 10 years | Yes — LAHD application |
| Primary renovation surcharge | Amortized; requires tenant temp relocation | Yes — LAHD approval |
| Cost-of-service surcharge (utilities) | Limited categories | Yes — LAHD application |
| Banked increases | Up to 3 prior unused years | No (but documentation needed) |
The most strategic LARSO planning involves “banking” — the right under LAMC § 151.06(D) to carry forward unused portions of the annual adjustment for up to three years and apply them in a single increase. A unit that received no increase in 2023, 2024, and 2025 could see a substantial 2026 cumulative bump if all four years of allowed adjustment were properly preserved through annual notices.
What are the twelve just-cause grounds for LARSO eviction?
LARSO restricts eviction to twelve enumerated grounds under LAMC § 151.09. The first seven are “for fault” (tenant conduct), and the remaining five are “no fault” (landlord-driven). Each ground has a specific notice form, service requirement, and — for no-fault evictions — relocation assistance owed to the tenant.
| # | Ground | Notice | Type |
|---|---|---|---|
| 1 | Failure to pay rent | 3-day pay or quit (CCP § 1161(2)) | For fault |
| 2 | Breach of lease | 3-day cure or quit (CCP § 1161(3)) | For fault |
| 3 | Nuisance / illegal use | 3-day unconditional quit (CCP § 1161(4)) | For fault |
| 4 | Refusal to renew similar lease | 30-day notice | For fault |
| 5 | Refusal to provide reasonable access | 3-day cure or quit | For fault |
| 6 | Subleasing in violation of lease | 3-day cure or quit | For fault |
| 7 | Unapproved subtenant remaining after primary tenant vacates | 30-day or 60-day notice | For fault |
| 8 | Owner or relative move-in (OMI) | 60-day; relocation; LAHD declaration | No fault |
| 9 | Compliance with government order to vacate | 30-day plus relocation | No fault |
| 10 | Demolition or removal from rental market | 120-day plus relocation; Ellis Act notices | No fault |
| 11 | HUD or Section 8 termination of subsidy | Per HUD regulations | No fault |
| 12 | Resident manager being replaced | 30-day notice | No fault |
Service requirements differ by ground. A 3-day notice under CCP § 1162 must be served personally, by substituted service plus mailing, or by post-and-mail. A 60-day notice under Civ. Code § 1946.1 may be served by certified mail with return receipt. The most common pleading defect we see in LA Superior Court unlawful detainer cases is improper notice service — a defect that produces summary judgment for the tenant and a fee award against the landlord.
Relocation assistance for no-fault evictions
LAMC § 151.09(G) requires payment of relocation assistance for any no-fault eviction (grounds 8 through 12). The 2026 amounts are tiered by tenant category. “Eligible” tenants (over 62, disabled, or with minor children) receive higher amounts. The current published amounts are $24,650 for eligible tenants and $9,810 for ineligible tenants in studios and one-bedrooms, with higher tiers for larger units. LAHD updates these figures annually — verify the current schedule before serving any no-fault notice.
What happens when LAHD investigates a LARSO complaint?
The Los Angeles Housing Department enforces LARSO through investigation, hearings, and civil action. A tenant complaint triggers an LAHD investigation under LAMC § 151.05(I). The investigator interviews the tenant, requests rental records and registration filings, and inspects the unit if habitability claims are involved.
If LAHD determines an LARSO violation, possible remedies include rent rollback to the lawful rent, refund of unlawful rent collected (limited to the three-year period under CCP § 338), civil penalty up to $500 per violation, registration revocation, and — for serious or repeat violations — referral to the Los Angeles City Attorney for criminal misdemeanor prosecution under LAMC § 151.10(C). A tenant may also file a private civil action with treble damages and attorney fees under LAMC § 151.10(A).
How does LARSO interact with AB 1482?
AB 1482 (the Tenant Protection Act of 2019, codified at Civ. Code § 1947.12 and § 1946.2) sets a state-wide floor of 5 percent plus CPI rent increase cap and requires just cause for evictions of tenants resident more than 12 months. AB 1482 expressly does NOT preempt local rent control or just-cause ordinances under § 1947.12(j) and § 1946.2(g). Where LARSO is more protective, LARSO governs.
Properties in the City of Los Angeles that are EXEMPT from LARSO (post-1978 multi-family, single-family homes, condos) may still be subject to AB 1482. The exemption notice under Civ. Code § 1947.12(d)(5) must be served in 12-point font and added as a lease addendum to claim the AB 1482 single-family / condo exemption. Failure to serve the notice subjects the property to AB 1482 even when statutory exemption would otherwise apply.
Frequently Asked Questions
Does LARSO apply to a duplex where I live in one unit and rent the other?
Yes if the building was constructed on or before October 1, 1978. Owner-occupied duplexes are exempt from AB 1482 under Civ. Code § 1947.12(d)(2), but no equivalent owner-occupant exemption exists in LARSO for pre-1978 properties. The duplex unit you rent is fully covered — annual registration, rent cap, and just-cause eviction all apply.
Can I take a rent increase if I missed annual registration?
No, until you cure. LAMC § 151.05 makes registration a condition of the right to increase rent. A landlord who is delinquent on registration must complete current registration, pay all back fees and penalties, and only then may a prospective rent increase be taken. Rent already increased during a non-registration period is uncollectible and must be refunded.
How do I evict a tenant for nonpayment of rent under LARSO?
Serve a 3-day notice to pay rent or quit under CCP § 1161(2). The notice must state the exact rent due, the payee’s name and address, and the manner in which payment may be made. After three days expire, file an unlawful detainer in LA Superior Court under CCP § 1166. LARSO does not add additional notice requirements for nonpayment evictions — just cause ground 1 incorporates the state law process. The COVID-era Just Cause for Eviction Ordinance (added during 2020-2023) imposed additional protections that have largely sunset; verify current status with LAHD before filing.
What is a Tashman unit and why does it matter?
A Tashman unit (after Tashman v. Bohrer, 17 Cal.App.4th 1100 (1993)) is a unit subject to a relocation arrangement — typically where a no-fault eviction was settled through a buyout, and Costa-Hawkins vacancy decontrol does not apply. The unit’s rent ceiling stays with the unit until a new tenant takes possession through ordinary vacancy. This issue often surfaces in due diligence on multi-family acquisitions and can affect the buyer’s projected rent roll.
Does LARSO apply to short-term rentals (Airbnb)?
LARSO applies if the rental period extends beyond 30 days. The City of Los Angeles Home-Sharing Ordinance (LAMC § 12.22(A)(32)) imposes separate restrictions on rentals shorter than 30 days, including a primary residence requirement and registration with LAHD. Owners cannot use short-term rentals to avoid LARSO — the unit’s underlying tenancy classification controls.
Can I sell my LARSO-covered building free of the rent control restrictions?
No. LARSO runs with the building, not the owner. A new owner takes the property subject to all existing rent ceilings and tenancy histories. Buyers conducting due diligence should request the LAHD registration history, the Rent Registry filings, all current leases, and a Tashman analysis. Estoppel certificates from each tenant provide additional protection — but cannot override LARSO ceilings if the tenant later disputes the certified rent.
Talk to a Los Angeles Real Estate Attorney
Borna Houman Law advises Los Angeles property owners across LARSO compliance, registration, just-cause eviction filings, LAHD investigations, and acquisition due diligence. We represent owners in Westside, Hollywood, Mid-Wilshire, Koreatown, Silver Lake, Eagle Rock, Sun Valley, San Pedro, and every neighborhood in the City of Los Angeles.
LARSO compliance is not a single-event checklist — it is a continuous obligation that affects every rent increase, every notice, and every prospective sale. Call (888) 42-BORNA to schedule a confidential consultation.
This article is for general information only and is not legal advice. The amounts and procedures described reflect LAMC § 151.00 et seq. as currently in effect; verify all amounts with LAHD before relying on them. For related coverage, see our step-by-step landlord eviction guide, AB 1482 exemption analysis, and Ellis Act eviction compliance. The official LAHD page is housing.lacity.gov.
