Cap Rate Explained
Cap Rate Explained
Cap rate (capitalization rate) is a property's net operating income divided by its purchase price, expressed as a percentage. It's the unleveraged yield—what the real estate itself earns, independent of how you financed it.
Key takeaways
- Cap rate = NOI ÷ purchase price. A $400,000 property with $20,000 NOI has a 5% cap rate.
- Cap rate is the most important metric for comparing properties across markets and across investors. Two deals with different leverage but the same cap rate have the same underlying real estate quality.
- Cap rates vary by market, asset class, and risk. Prime urban multifamily might trade at 3–4% cap rates; secondary-market single-family at 5–6%; distressed properties at 8%+.
- Higher cap rate typically means higher risk or less desirable location. Lower cap rate often reflects prime location, stability, and buyer confidence in the asset.
- Cap rate alone doesn't account for appreciation, financing costs, or taxes. It's one tool in a full analysis, not the whole story.
The math
Cap rate is straightforward:
Cap Rate = (Net Operating Income ÷ Purchase Price) × 100%
A property purchased for $500,000 that generates $25,000 annual NOI has a 5% cap rate.
If you buy the same property for $600,000, the cap rate drops to 4.17%, because you're paying more for the same income stream.
If you buy it for $400,000, the cap rate rises to 6.25%, because you're getting that income stream cheaper.
The cap rate is always tied to the purchase price, not the property's inherent quality. The property hasn't changed, but you've negotiated a better deal at a lower price—or overpaid at a higher price. Cap rate captures that.
Cap rate vs. gross rental yield
Don't confuse cap rate with gross rental yield. Gross rental yield is rent divided by price, ignoring all expenses. Cap rate is NOI (rent minus expenses) divided by price.
A property renting for $2,000/month ($24,000/year) on a $400,000 purchase has:
- Gross rental yield: 6%
- Cap rate: depends on expenses. If NOI is $12,000 (after operating expenses), cap rate is 3%.
Cap rate is the real number. Gross yield is a preliminary screening tool. In expensive markets (San Francisco, New York), gross yields are low (2–3%), but cap rates can be even lower (1.5–2.5%) after accounting for high operating expenses. In affordable markets (Memphis, Indianapolis), both are higher.
Why cap rate is the gold standard
Cap rate is the metric that allows comparison across properties, markets, and time periods. It abstracts away the noise of different purchase prices and normalizes return on the underlying real estate.
Two investors:
Investor A buys a $400,000 property with $20,000 NOI. Cap rate = 5%.
Investor B buys a $600,000 property with $30,000 NOI. Cap rate = 5%.
Both properties have the same underlying quality (from a real estate operations perspective), even though B paid 50% more for 50% more income. Neither property is a better deal on a per-dollar basis.
Now, if Investor A financed 80% with a 6% mortgage, and Investor B financed 90% with a 5% mortgage, their cash-on-cash returns will differ dramatically. But the underlying real estate—the cap rate—tells you that both deals have the same fundamental economics. The difference in returns comes from leverage and interest rates, not property quality.
Cap rate compression and expansion
Cap rates aren't fixed. They expand (increase) and compress (decrease) based on market conditions, investor appetite, and interest rates.
In 2012, after the financial crisis, investors demanded high cap rates (7–8%+) to compensate for perceived risk. Low interest rates and a recovery in confidence caused cap rates to compress throughout 2010–2021, with prime properties trading at 3–4% in major metros.
As the Federal Reserve raised rates in 2022–2023, and investor demand cooled, cap rates expanded. By 2024, prime commercial real estate was trading at 5–6.5% cap rates—a major expansion from the 3–4% lows of 2021. This expansion hit values: a property worth $5 million at a 3% cap rate would be worth $3.3 million at a 4.5% cap rate, all else equal.
Cap rate is the market's way of pricing risk and opportunity. Lower cap rates mean the market is confident and willing to pay premium prices for stable income. Higher cap rates mean the market is nervous and demanding higher yields to justify the price.
Cap rates by market and asset class (2023–2024 snapshot)
These are rough benchmarks as of late 2024:
Prime multifamily (Class A apartments, major metros): 4–5% cap rate Secondary multifamily (Class B, secondary metros): 5–6.5% cap rate Single-family rentals (primary markets): 4–5.5% cap rate Single-family rentals (secondary/Sunbelt markets): 5.5–7% cap rate Commercial office (Grade A): 5.5–7% cap rate Retail (stabilized, Class A): 5–6.5% cap rate Industrial/warehouse (prime): 4–5% cap rate Industrial/warehouse (secondary): 5.5–7% cap rate
These vary by specific location, tenant quality, lease terms, and market sentiment. A trophy property in downtown Austin might trade at 4% cap rate; a distant secondary market property at 8%. The gap reflects both real economic differences (stronger tenant base, better location) and investor psychology (fear premium, growth premium).
Cap rate doesn't predict appreciation
A critical point: cap rate is a measure of current income yield, not total return. A property could have a 3% cap rate (low income yield) in a market with strong appreciation, generating 8–10% total returns (cap rate yield + appreciation). Conversely, a property with a 7% cap rate might be in a declining market with negative appreciation, yielding only 2% total return.
Cap rate answers the question: "What income does this real estate generate?" It doesn't answer: "Will this property go up in value?" That requires separate analysis of market trends, supply and demand, job growth, and demographic shifts.
How cap rate drives valuation
Real estate investors use cap rate as a shortcut to valuation. If the market is trading comparable properties at 5% cap rates, and you find a property with $50,000 NOI, you can estimate its value: $50,000 ÷ 0.05 = $1,000,000.
If the property is listed at $900,000, it's trading at a 5.56% cap rate—above the market rate, so it's a bargain (assuming comps are accurate). If it's listed at $1,100,000, it's at a 4.55% cap rate—below the market, suggesting the seller has priced it optimistically or it has some special quality justifying the premium.
This is how professional investors use cap rate to spot deals: they know the "going rate" for properties in a market, then compare individual properties' cap rates to that benchmark.
Cap rate decision tree
Next
Cap rate tells you about unleveraged real estate returns. But most investors borrow money. When you layer in debt, leverage amplifies returns (or losses). That's where cash-on-cash return comes in—it's the cap rate adjusted for financing.