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The LA Apartment Owner's Guide to Selling a Rent-Stabilized (RSO) Building

By Glen Scher and Filip Niculete| LAAA Team at Marcus & Millichap | March 15, 2026

Los Angeles' Rent Stabilization Ordinance (RSO) governs roughly 650,000 apartment units across the city. If you own a building constructed before October 1, 1978, with two or more units in the City of Los Angeles, your property is almost certainly subject to RSO. Selling an RSO building requires specific expertise that goes beyond standard multifamily brokerage.

After closing 455+ multifamily transactions totaling over $1.45 billion in sales volume, including hundreds of RSO properties across the San Fernando Valley, Hollywood, Koreatown, and the Westside, we've developed a methodology for maximizing RSO building values that accounts for the unique dynamics these properties present.

What is the RSO and How Does It Affect Your Building's Value?

The Los Angeles Rent Stabilization Ordinance limits how much landlords can raise rents on existing tenants each year. For 2025-2026, the allowable increase is 4% (based on CPI). However, the RSO also includes vacancy decontrol under the Costa-Hawkins Rental Housing Act, which means when a tenant voluntarily vacates, the landlord can reset rent to market rate.

This creates a two-tier value structure that sophisticated buyers understand:

  • Current income: Based on actual in-place rents (often well below market for long-term tenants)
  • Upside potential: The gap between current rents and achievable market rents upon natural turnover

A building with significant loss-to-lease (the gap between in-place rents and market) can actually be more attractive to value-add buyers than a fully stabilized non-RSO building, because the built-in rent growth is predictable and requires no capital expenditure.

RSO Cap Rates: What to Expect

RSO buildings in Los Angeles typically trade at different cap rates depending on their rent positioning:

Rent PositionTypical Cap Rate RangeBuyer Profile
Deep below market (40%+ loss-to-lease)3.5% - 4.5%Value-add investors, syndicators
Moderate below market (15-35% loss-to-lease)4.0% - 5.0%Experienced operators
Near market rents4.5% - 5.5%Stabilized income buyers
Fully at market5.0% - 6.0%Cash-flow investors

These ranges vary by submarket. A stabilized RSO building in Sherman Oaks trades at tighter cap rates than a comparable building in Panorama City, reflecting location premiums and tenant quality differences.

The Vacancy Decontrol Advantage

Costa-Hawkins allows landlords to reset rents to market when a unit is voluntarily vacated. This is the single most important value driver for RSO buildings. Here's why:

Example: A 10-unit building in North Hollywood with average in-place rents of $1,400/month. Market rents for comparable units are $2,200/month. That's a $800/unit/month gap, or $96,000 per year in potential income that will be captured naturally as tenants turn over.

Assuming 10% annual turnover (one unit per year), the building adds approximately $9,600 in annual gross income each year without any capital improvements. Over five years, that's $48,000 in additional annual income, which at a 5% cap rate represents $960,000 in added value.

This is why RSO buildings with below-market rents often sell at lower cap rates -- buyers are paying for the embedded upside.

Key Legal Considerations When Selling RSO Buildings

Just Cause Eviction

RSO tenants cannot be evicted without just cause. The 12 enumerated just causes include nonpayment of rent, breach of lease, and owner move-in (with restrictions). You cannot simply empty the building to sell it at a higher price.

Ellis Act

The Ellis Act allows landlords to withdraw rental units from the market entirely. This requires relocating all tenants with relocation assistance ($9,050 to $22,680 per unit depending on tenant circumstances as of 2025) and recording a Notice of Intent. Ellis Act conversions are complex, lengthy (minimum 120-day notice), and come with re-rental restrictions.

Tenant Buyouts

Voluntary buyout agreements are legal and common. These require the tenant's voluntary consent and compliance with LAHD buyout notification procedures. Buyout amounts vary widely, from $5,000 for a month-to-month tenant in a lower-rent area to $50,000+ for a long-term tenant in a prime location.

TOPA (Tenant Opportunity to Purchase Act)

As of 2025, the City of LA requires notice to tenants before selling certain RSO buildings, giving them the opportunity to make an offer. Compliance adds approximately 30 days to the sale timeline but does not typically affect pricing.

What Buyers Look For in RSO Buildings

When we market an RSO building, we know what drives buyer decisions because we've been on both sides of hundreds of these transactions:

  1. Loss-to-lease analysis: The gap between current and market rents, unit by unit
  2. Tenant tenure: How long each tenant has been in place (longer tenure = more upside per unit but slower turnover)
  3. Unit mix and size: Larger units (2BR/2BA) command higher market rents and larger absolute rent bumps upon turnover
  4. Renovation potential: Can units be upgraded between tenants to achieve premium rents?
  5. Operating expense efficiency: Are expenses in line with benchmarks? Can a new owner reduce costs?
  6. Capital needs: Roof, plumbing, electrical -- deferred maintenance directly impacts net proceeds

Our Approach to Selling RSO Buildings

Pre-Market Preparation

Before going to market, we build a complete underwriting package that includes:

  • Unit-by-unit rent roll with loss-to-lease analysis
  • Pro forma projections at various turnover rates
  • Operating expense benchmarking against our database of 455+ closed transactions
  • Capital expenditure estimates for identified deferred maintenance
  • Comparable sales analysis focused on RSO transactions

Targeted Marketing

RSO buildings require targeted buyer outreach. Not every buyer understands RSO dynamics, and the wrong buyer pool produces low offers and failed escrows. We maintain a database of 55,000+ apartment buildings with owner contact information and direct relationships with the most active RSO buyers in every LA submarket.

Transaction Management

RSO transactions frequently involve tenant-related complications during escrow: habitability claims, LAHD complaints, relocation disputes. Our 10-person team manages these issues proactively, preventing them from derailing the sale.

Frequently Asked Questions

What is the RSO and which buildings does it cover?

The Los Angeles Rent Stabilization Ordinance applies to residential rental properties with two or more units built before October 1, 1978, located within the City of Los Angeles. It limits annual rent increases and requires just cause for eviction. Approximately 650,000 units across the city are subject to RSO.

How does RSO affect my apartment building's sale price?

RSO buildings are valued based on both current income and upside potential through vacancy decontrol. Buildings with significant below-market rents often attract premium pricing from value-add buyers who see embedded rent growth. RSO cap rates in LA typically range from 3.5% to 6.0% depending on rent positioning and location.

Can I raise rents before selling my RSO building?

You can implement the annual allowable RSO increase (4% for 2025-2026) for existing tenants. For vacant units, you can reset to market rent under Costa-Hawkins vacancy decontrol. Strategic rent positioning before listing can materially impact your sale price.

What is vacancy decontrol and why does it matter?

Vacancy decontrol under Costa-Hawkins allows landlords to reset rents to market rate when a tenant voluntarily vacates an RSO unit. This creates a built-in value driver as tenants naturally turn over, making RSO buildings with below-market rents particularly attractive to investors.

How long does it take to sell an RSO apartment building?

The LAAA Team averages 35.5 median days on market for apartment buildings. RSO buildings may take slightly longer due to additional buyer due diligence around tenant profiles and rent positioning, but our track record shows 37% of apartments sell under 30 days regardless of RSO status.

Do I need to notify tenants that I'm selling?

Under TOPA, certain RSO building sales require tenant notification and an opportunity for tenants to submit a purchase offer. This adds approximately 30 days but rarely affects pricing. During escrow, buyers will request access for inspections, requiring 24 hours written notice under Civil Code 1954.

What are relocation fees if a buyer wants to use the Ellis Act?

Ellis Act relocation fees in the City of LA range from approximately $9,050 to $22,680 per unit depending on tenant circumstances (elderly, disabled, length of tenancy). The Ellis Act process requires a minimum 120-day notice period and restricts re-rental for up to 10 years.

How do Glen Scher and Filip Niculete handle RSO building sales differently?

With 455+ closed transactions including hundreds of RSO properties, we build complete loss-to-lease analysis packages, target our outreach to the most active RSO-experienced buyers in each submarket, and proactively manage tenant-related complications during escrow. Our database of 55,000+ apartment buildings allows us to identify and reach the right buyer pool immediately.

Questions? We're Here to Help.

Call for a confidential, no-obligation consultation.

(818) 212-2808