Cap rate — capitalization rate — is the primary metric LA apartment building investors use to measure return and compare properties. If you are buying, selling, or valuing a multifamily property in Los Angeles, cap rate is the number you need to understand.

What Is Cap Rate in Real Estate?

Cap rate measures the annual return a property generates based on its net operating income (NOI), assuming an all-cash purchase. The formula:

Cap Rate = Net Operating Income (NOI) ÷ Purchase Price

Example: A building generates $90,000 in NOI and sells for $1,800,000. Cap rate = $90,000 ÷ $1,800,000 = 5.0%.

Cap Rates in Los Angeles in 2025–2026

LA apartment building cap rates have shifted since the 2021–2022 peak. Rising operating costs and higher interest rates have changed the math. Current market ranges:

• Koreatown (small RSO buildings): 4.5%–5.5%
• Echo Park / Silver Lake: 4.5%–5.5%
• South Los Angeles: 5.5%–6.5%
• Inglewood: 5.5%–6.5%
• Highland Park / Glassell Park: 5.0%–6.0%

These ranges reflect closed transactions. Individual buildings trade above or below market cap rates depending on condition, rent levels relative to market, and buyer profile.

Cap Rate vs GRM

GRM (Gross Rent Multiplier) uses gross rent and ignores expenses. Cap rate uses NOI and accounts for the actual cost of operating the building. Use GRM to screen quickly; use cap rate to make buy/sell decisions. See our GRM guide for the full comparison.

How Sellers Use Cap Rate

A seller wants to present the lowest cap rate possible — because lower cap rate implies higher value. Buyers should verify every expense item and re-underwrite from the actual rent roll and trailing 12-month operating statements, not the seller's pro forma.

How Buyers Use Cap Rate

Buyers compare the going-in cap rate to their cost of capital. If borrowing costs 6.5% and the property cap rate is 5.0%, the debt costs more than the property earns — negative leverage. Buyers accepting low cap rates are typically underwriting rent growth, value-add upside, or long-term appreciation.

Frequently Asked Questions About Cap Rate

What is a good cap rate for Los Angeles apartment buildings?

In 2025–2026, 5.0%–5.5% is typical in stabilized Eastside and Koreatown submarkets. South LA and Inglewood offer 5.5%–6.5% on similar-sized assets. A cap rate above 6% in a core LA submarket often reflects below-market rents, deferred maintenance, or tenant issues that require careful underwriting.

Does cap rate include mortgage payments?

No. Cap rate is calculated before financing. It measures the property's return as if purchased with all cash, allowing fair comparison between properties regardless of how each deal is financed.

What is the relationship between cap rate and property value?

They move inversely. If cap rates rise (buyers require more return), values fall. If cap rates compress (buyers accept lower returns), values increase. From 2015 to 2022, LA cap rate compression drove significant value increases. Since 2022, cap rate expansion has put downward pressure on values.

How do I calculate NOI for cap rate?

NOI = Gross Rental Income − Vacancy − Operating Expenses (management, taxes, insurance, maintenance, utilities). It excludes mortgage payments, depreciation, and capital expenditures. See our full NOI guide for a step-by-step calculation with a real LA example.

What cap rate should I use when valuing my LA apartment building?

The right cap rate depends on your submarket, building size, and current rent levels relative to market. Kingside Investment Group provides free cap rate analyses for apartment buildings across LA County — built from actual closed transactions, not automated estimates. Call (213) 797-7181.

Kingside Investment Group has closed 169 apartment building transactions totaling $336.5M across Los Angeles. For a free valuation, call (213) 797-7181 or email Andres.Diaz@kw.com.