What is a Cap Rate in Real Estate?
A cap rate (capitalization rate) is the ratio of a property's Net Operating Income to its purchase price, expressed as a percentage. It is used to estimate a property's return and compare investments on an equal footing.
Before you make an offer on a commercial property, you need a quick way to assess whether the price makes sense relative to the income it produces. The cap rate does that in one number. It is not the whole story, but it is almost always the first number experienced investors look at when evaluating a deal.
The Formula
If a property generates $500,000 in NOI and sells for $10,000,000, the cap rate is 5.0%.
That single calculation tells you that if you paid all cash for the property, you would earn a 5.0% annual return on your investment in the first year before any financing costs.
The formula also works in reverse. If you know the cap rate and the NOI, you can back into what a property should be worth:
A property generating $500,000 in NOI in a market trading at 5% cap rates implies a value of $10,000,000. This is how buyers and brokers quickly estimate asking prices and test whether a seller's number makes sense.
What is a Good Cap Rate?
This is the most common question people ask about cap rates, and the honest answer is: it depends.
A good cap rate is one that appropriately compensates you for the risk you are taking. Lower cap rates mean you are paying more for each dollar of income, which is only justified if the asset is stable, the market is strong, and the downside risk is limited. Higher cap rates mean you are paying less, but usually for a reason: higher vacancy risk, deferred maintenance, a weaker market, or an asset that requires active management to perform.
As a general reference:
- Under 5% — Aggressive pricing, core markets, institutional-quality assets
- 5% to 6% — Stabilized assets, primary markets
- 6% to 8% — Core plus to value-add range
- Above 8% — Value-add, secondary or tertiary markets, higher risk
These ranges also shift by property type. Multifamily and industrial have historically traded at tighter cap rates than retail or office, reflecting perceived stability and demand.
The right cap rate for your deal depends on your strategy. A 4.5% cap rate on a stabilized multifamily asset in a core market might be a very good deal. A 4.5% cap rate on a single-tenant retail property in a secondary market with a lease expiring in two years is a very different situation.
Is a Higher Cap Rate Better?
Not necessarily, and this is one of the most common misconceptions in real estate investing.
A higher cap rate means you are paying less per dollar of income, which sounds attractive. But cap rates are priced by the market for a reason. A property trading at a 9% cap rate in a market where similar assets trade at 6% is telling you something. The market has decided that property carries more risk, whether that is a weaker submarket, deferred maintenance, near-term lease expirations, or a tenant mix that makes lenders nervous.
A lower cap rate is not inherently bad either. Paying a 4.5% cap rate for a stabilized multifamily asset in a strong market with long-term leases reflects the stability and demand for that asset. You are paying a premium, but you are buying predictability.
The better question is not whether the cap rate is high or low, but whether it is appropriate for the risk you are taking on. A 7% cap rate on a well-located, stabilized industrial property might be a better investment than a 9% cap rate on a struggling retail center.
What a Cap Rate Does Not Tell You
The cap rate is a useful starting point, but it has real limitations worth understanding before you rely on it.
It does not account for financing. Cap rate is calculated on an all-cash basis. Two investors buying the same property at the same cap rate can have very different returns depending on how much debt they use and at what interest rate. The cap rate tells you nothing about debt service, leverage, or cash on cash return.
It does not capture future performance. Cap rate is based on current or trailing NOI. It tells you what the property is doing today, not what it will do over your hold period. A property with below-market rents and near-term lease expirations has a very different outlook than its current cap rate suggests.
It does not account for capital expenditures. If the roof needs replacing or the HVAC systems are at end of life, that cost is not in the NOI and therefore not in the cap rate. Always underwrite capex separately.
It does not tell you the whole story on risk. Two properties can have the same cap rate with very different risk profiles depending on tenant quality, lease terms, market conditions, and asset condition.
Use the cap rate as a quick screen and a valuation anchor, not as a complete investment analysis.
How Investors Use It in Practice
Cap rate shows up at nearly every stage of a commercial real estate transaction.
When screening deals, investors use cap rate as a first filter. Before running a full underwriting model, a quick cap rate calculation tells you whether a property is even in the right range for your return requirements. It takes ten seconds and can save hours of deeper analysis on a deal that was never going to work.
When comparing properties, cap rate levels the playing field. Because it excludes financing, you can compare a property you plan to buy with cash to one you plan to leverage heavily, and still make an apples-to-apples comparison on income relative to price.
When estimating value, investors use prevailing cap rates in a market to back into what a property should be worth. If you know what similar assets are trading at and you know your NOI, you can quickly determine whether a seller's asking price is reasonable or aggressive.
When negotiating, cap rate is a common language between buyers, sellers, and brokers. Saying this property should trade at a 6.5 cap based on comparables is a more grounded negotiating position than debating price in absolute dollars.
Our deal from earlier illustrates this cleanly. A property generating $500,000 in NOI purchased for $10,000,000 trades at a 5.0% cap rate. If comparable properties in that market are trading at 5.5%, the seller may be overpriced by roughly $900,000. That is a conversation worth having before you submit an offer.
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The Cap Rate Calculator solves for any of the three following variables: Cap rate, NOI, purchase price. Enter any two values and get the third instantly. No download required.
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