1. What is the Los Angeles Rent Stabilization Ordinance (RSO)?

The Rent Stabilization Ordinance (RSO) regulates rent increases for certain rental units in Los Angeles. For 2025, the allowable rent increase is capped at 8%, with a base increase of 3% plus an additional 1% if utilities are included in the rent.

2. How Does the Calculator Work?

The calculator uses the RSO formula:

Where:

• Base increase — 3% of current rent
• Additional increase — 1% if utilities are included (max total increase 8%)
• Current Rent — The tenant's current monthly rent amount

Explanation: The calculation ensures landlords don't exceed the legally allowed rent increase percentage for RSO-covered units.

3. Importance of Rent Increase Calculation

Details: Proper calculation helps landlords comply with LA rent control laws and helps tenants understand their rights regarding allowable rent increases.

4. Using the Calculator

Tips: Enter current rent amount and indicate whether utilities are included. The calculator will show the maximum allowable increase and the new rent amount.

5. Frequently Asked Questions (FAQ)

Q1: What types of units are covered by RSO?
A: Generally, multi-family buildings built before October 1978 and some single-family homes and condos.

Q2: How often can rent be increased?
A: For RSO units, rent can typically be increased once every 12 months.

Q3: Are there exceptions to these limits?
A: Yes, capital improvement passthroughs or hardship increases may be approved separately.

Q4: What if my unit isn't RSO-covered?
A: Non-RSO units may have different rules under state law (AB 1482).

Q5: Where can I verify if my unit is RSO-covered?
A: Check with the Los Angeles Housing Department (LAHD) or their online ZIMAS system.