Glossary
Self-storage cap rates
A capitalization rate, or cap rate, is net operating income divided by value. It converts a facility's annual income into a price, and it expresses what a buyer requires in return for the risk of that income. In self-storage the cap rate is unusually sensitive to local supply, because month-to-month leases mean the income being capitalized reflects today's market rather than a contractual rent schedule.
The calculation
Cap rate equals net operating income divided by value. Rearranged, value equals net operating income divided by cap rate, which is how the measure is used in practice.
Net operating income here means income after operating expenses and before debt service, capital expenditure, and income taxes. Getting the numerator right matters more than debating the denominator, because small errors in stated net operating income move value by a multiple of themselves.
For a self-storage acquisition, the adjustments that most often change the numerator are property tax reassessment after the sale, a market management fee where the facility is owner-operated, insurance priced to the buyer's own program, and removal of ancillary income that does not transfer.
The mechanics are the same across commercial real estate, and PropRise Primer covers them in its cap rate entry. The rest of this page is about what is different when the asset is self-storage.
Why the same income carries different cap rates
A cap rate is a risk statement. Buyers apply a lower cap rate, and therefore pay more, when the income looks durable, and a higher one when it does not.
In storage, durability is mostly a trade-area question. A facility in a three-mile ring with low existing square feet per capita, rising competitor asking rates, growing population, and no approved projects has income that is likely to hold or grow. A facility with identical income in a ring with two approved projects and heavy promotional activity across competitors does not.
Interest rates, transaction volume, and the availability of financing move cap rates across the whole market at once, independently of any individual asset. Those forces are outside an owner's control, which is why underwriting that depends on exit cap compression is underwriting that depends on the market cooperating.
Common mistakes
Capitalizing income you have not achieved. Below-market in-place rates are real upside, but pricing them into today's stabilized income pays the seller for your own execution.
Comparing cap rates across different net operating income definitions. If one includes a management fee and a reserve and the other does not, the two rates are not measuring the same thing.
Reading a metro-level cap rate as though it applied to a specific ring. Storage risk is local, and metro averages smooth over exactly the supply differences that set the rate for one facility.
How Beacon uses this
Beacon does not publish cap rates. It supplies the trade-area evidence that determines how durable a facility's income is, which is what the cap rate is pricing.
For the three-mile ring around any site that means existing square feet per capita, street rates refreshed every 48 hours by unit size and climate type including promotions and competitor rankings, 12-month occupancy trends, planned and proposed and under-construction supply, population and income and growth forecasts with housing starts and permits, ownership and parcel details, and by-right zoning results linked to the municipal code.
Because Beacon screens roughly 450,000 trade areas, that evidence is available across a whole pipeline of opportunities rather than one asset at a time.
Common questions about cap rates
How is a cap rate calculated?
Divide net operating income by value. Net operating income means income after operating expenses and before debt service, capital expenditure, and income taxes. Rearranged, value equals net operating income divided by the cap rate.
What is a good cap rate for self-storage?
There is no universal answer, because a cap rate prices risk and risk is local. The same net operating income supports a lower cap rate in a trade area with a thin development pipeline and rising asking rates than in one with approved competing projects and heavy promotional activity.
Does a lower cap rate mean a better deal?
Not by itself. A lower cap rate means a higher price for the same income, which usually reflects a market view that the income is durable. Whether that view is correct depends on the supply and demand evidence inside the trade area.
Should I underwrite exit cap rate compression?
Relying on it makes the return a bet on market conditions rather than on the asset. A more defensible approach holds the exit cap at or above the entry cap and requires the deal to work on income growth alone.
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