Are ADUs in Los Angeles Subject to Rent Control? Complete 2025 Guide

Los Angeles accessory dwelling units (ADUs) and rent control laws create a complex landscape that property owners must navigate carefully. Understanding whether your ADU falls under the Rent Stabilization Ordinance (RSO) can mean the difference between thousands in rental income and potential legal complications.

What Are ADUs and Why Do They Matter in Los Angeles?

Accessory Dwelling Units, commonly called granny flats, in-law units, or casitas, are secondary housing units built on single-family residential properties. Los Angeles has experienced an ADU construction boom, with thousands of new units added annually as homeowners seek additional rental income and the city addresses housing shortages.

The critical question for LA property owners: does adding an ADU trigger rent control obligations?

Los Angeles Rent Control Basics: RSO and Your Property

The Los Angeles Rent Stabilization Ordinance (RSO) applies to residential buildings constructed before October 1, 1978, containing two or more units. Properties subject to RSO face:

• Annual rent increase limits (typically 3-8% depending on CPI)

• Just cause eviction requirements

• Mandatory relocation assistance for no-fault evictions

• Tenant habitability protections

Detached ADUs: Generally Exempt from Rent Control Caps

Detached ADUs built as separate structures are typically NOT subject to RSO rent limitations. This means you can set market-rate rent and adjust pricing more freely than RSO-controlled units.

However, there's an important exception: if your main house was built before October 1, 1978, and you rent it out alongside your detached ADU, the entire property may now qualify as multi-family housing under RSO. This could subject your main house to rent control, even though the detached ADU itself remains exempt from rent caps.

Attached and Converted ADUs: Higher Risk for RSO Coverage

Attached ADUs and conversion ADUs face different rules that often trigger rent control obligations:

Attached ADUs (Garage Conversions, Room Additions)

When you add an attached ADU to a pre-1978 home, you're creating a multi-unit property. Both the main house and attached ADU may fall under RSO coverage, subjecting both units to rent increase limitations and just cause eviction requirements.

Converted ADUs (Internal Conversions)

Converting existing space within your home (like splitting a house into two separate units) typically triggers RSO if the original structure predates October 1, 1978. Both the main unit and converted ADU become subject to rent stabilization rules.

Costa-Hawkins Act Considerations

The Costa-Hawkins Rental Housing Act sometimes limits rent control on newly created units. In certain cases, your ADU rent may be exempt from RSO caps while still maintaining eviction protections. This creates a hybrid situation where you have pricing flexibility but must follow just cause eviction procedures.

Eviction Protections Apply to Nearly All Los Angeles ADUs

Even ADUs exempt from rent control caps remain subject to Just Cause Ordinance (JCO) protections. This means:

• You need legal grounds to evict tenants

• No-fault evictions often require relocation assistance payments

• Proper notice periods must be followed

• Documentation requirements apply

Determining Your ADU's Rent Control Status: Key Questions

Ask yourself these questions to understand your obligations:

1. When was your main house built? Pre-1978 properties have higher RSO risk.

2. Is your ADU detached or attached? Detached units have more exemptions.

3. Are you renting both the main house and ADU? Multiple rental units increase RSO likelihood.

4. Did you convert existing space or build new? Conversions often trigger more restrictions.

Common Los Angeles ADU Rent Control Scenarios

Scenario 1: Detached ADU, Pre-1978 Main House

• ADU rent: Not subject to RSO caps

• Main house: May become RSO-covered if rented

• Evictions: JCO protections apply to both units

Scenario 2: Garage Conversion, Pre-1978 Property

• Both units: Likely subject to full RSO coverage

• Rent increases: Limited to annual RSO allowances

• Evictions: RSO just cause requirements

Scenario 3: New Construction on Post-1978 Property

• Both units: Generally exempt from RSO

• Evictions: Still subject to JCO protections

• Rent: Market-rate pricing allowed

Compliance and Legal Considerations for LA ADU Owners

Los Angeles ADU rent control violations carry serious penalties. Property owners should:

• Consult with experienced real estate attorneys before setting rents

• Register RSO-covered properties with the city

• Maintain detailed rental documentation

• Understand relocation assistance obligations

• Stay current on annual RSO rent increase allowances

The intersection of ADU regulations, rent control laws, and eviction protections creates numerous compliance requirements that vary significantly based on your specific property characteristics and rental situation.

Frequently Asked Questions About LA ADUs and Rent Control

Can I charge market rent for my detached ADU? Generally yes, but eviction protections still apply, and your main house may become subject to RSO if also rented.

Do I need to register my ADU with the city? If your property becomes subject to RSO due to the ADU, registration may be required.

What happens if I violate rent control laws unknowingly? Penalties can include rent rollbacks, tenant damages, and legal fees.

Understanding Los Angeles ADU rent control laws requires careful analysis of your specific property and rental situation. The rules continue evolving as the city balances housing production incentives with tenant protections.

Considering renting your Los Angeles ADU? Professional guidance ensures compliance while maximizing your investment returns. The Borges Real Estate Team specializes in LA rental property regulations and can help you navigate ADU rent control requirements for your unique situation.