Cap Rate

Quick Definition

The capitalization rate (cap rate) is the ratio of a property's Net Operating Income (NOI) to its current market value or purchase price — expressed as a percentage. It measures the expected return on a real estate investment assuming an all-cash purchase with no debt. Cap rates are the primary metric investors use to compare real estate values and returns across different properties and markets.

Cap Rate = Net Operating Income / Property Value × 100%

What It Means

The cap rate answers one question: if you paid all cash for this property, what annual return would you earn from operations alone? A 6% cap rate means you earn 6% of the purchase price annually in operating income. It is the real estate equivalent of the earnings yield (the inverse of the P/E ratio) in stocks — a higher cap rate means a higher income return relative to price (lower valuation); a lower cap rate means lower income return relative to price (higher valuation).

Cap Rate Formula and Example

Net Operating Income (NOI) = Gross Rental Income - Vacancy - Operating Expenses (excluding debt service)

Example — Apartment building:

Typical Cap Rates by Property Type (2024)

Cap Rate vs. Interest Rate Spread

The "cap rate spread" over the risk-free rate (10-year Treasury) determines how attractive real estate is relative to bonds:

2024 issue: 10-year Treasury ~4.3% + typical 200 bps spread = implied cap rate ~6.3%. Many commercial properties are still priced at 4.5-5.5% cap rates — a negative spread. This creates refinancing and valuation pressure as higher-rate debt on these properties exceeds their cap rates.

Cap Rate for Property Valuation

Investors and appraisers use cap rates to value income-producing properties:

Property Value = NOI / Cap Rate

Example: If market cap rates for similar properties are 6.5%, and a building generates $200,000 NOI:

• Property Value = $200,000 / 0.065 = $3,076,923

This works in reverse for evaluating deals:

• Offered at $4,000,000 with $200,000 NOI → cap rate = 5.0%
• Market cap rate is 6.5% → property is overpriced relative to market

Limitations of Cap Rate

Cap rate is most useful for comparing similar properties in the same market and time period — it is one input in underwriting, not a complete investment analysis.

Key Points to Remember

• Cap rate = NOI / Purchase Price — measures unleveraged operating yield
• Lower cap rate = higher valuation (like a lower earnings yield in stocks)
• Typical ranges: 4-6% for premier assets, 6-9% for secondary/value-add
• Used to value properties: Value = NOI ÷ Cap Rate
• The cap rate vs. 10-year Treasury spread determines relative attractiveness
• Ignores financing, appreciation potential, and capital expenditure needs — always use alongside other metrics

Frequently Asked Questions

Q: Is a higher or lower cap rate better? A: It depends on your goal. A higher cap rate means more current income relative to price — better for current yield and income investors. A lower cap rate means you are paying more for each dollar of income — typically associated with higher-quality, lower-risk assets in prime markets with stronger appreciation potential. Neither is universally better; it depends on investment strategy, financing, and market expectations.

Q: What is cap rate compression? A: Cap rate compression occurs when investor demand pushes property prices up faster than rents increase — compressing (shrinking) the cap rate over time. Example: A property generating $100,000 NOI was worth $1.5M at a 6.7% cap rate; increased demand pushed its price to $2M at a 5% cap rate. Cap rate compression benefits existing owners (appreciation) but makes it harder for new buyers to find attractive returns.

Q: How does leverage affect returns vs. the cap rate? A: Leverage amplifies returns above the cap rate when the cost of debt (interest rate) is below the cap rate — called "positive leverage." Example: 6% cap rate property financed at 5% interest rate → equity returns exceed 6%. In the current environment (cap rates 5-6%, mortgage rates 6.5-7.5%), many properties have "negative leverage" — debt costs more than the property earns, reducing equity returns below the cap rate.