Cap rate, short for capitalization rate, is the net operating income a property produces divided by its purchase price, expressed as a percentage. It's the shorthand investors use to compare very different properties on roughly the same basis: a $300,000 duplex and a $3 million retail strip can both be described by a single number, even though almost nothing else about them is comparable.
Working The Calculation
Net operating income is rental income minus operating expenses, before the mortgage payment and before depreciation. A property producing $40,000 in NOI on a $500,000 purchase price has an 8 percent cap rate. The mortgage doesn't factor into the calculation at all, which is the point: cap rate measures how the property itself performs, independent of how a particular buyer chooses to finance it.
Why Cap Rate Moves By Property Type And Location
A well-located multifamily building in a market like Wauwatosa or Shorewood typically trades at a lower cap rate than a similar property in a less established area, because buyers accept a lower current yield for the perceived stability and appreciation potential. Riskier property types, like a single-tenant retail building with a shorter remaining lease, tend to trade at higher cap rates to compensate the buyer for that added risk. Neither number is inherently better; they reflect different risk being priced into the deal.
Interest rates also move cap rates over time, since real estate competes with other yield-producing investments for capital. When borrowing costs rise, buyers generally need a higher cap rate to make a purchase pencil, which is one reason the same Milwaukee property can trade at a noticeably different cap rate two years apart even without any change to the building itself.
Where Cap Rate Falls Short As A Tool
Cap rate says nothing about financing, tax treatment, or how NOI is likely to change over the hold period. Two properties at an identical 6 percent cap rate can produce very different actual returns once one is bought with 75 percent leverage and the other with cash, and once one has a lease rolling over next year while the other is locked in for a decade. It's a starting filter for comparing deals, not a complete underwriting.
It also relies entirely on the accuracy of the NOI figure a seller provides, and sellers sometimes present an optimistic pro forma NOI rather than trailing actual performance. Pulling the trailing twelve months of income and expenses before trusting an advertised cap rate is standard diligence, not an unusual request.
Using Cap Rate When Sourcing 1031 Replacement Property
An investor selling a Milwaukee property and rolling proceeds into replacement property through a 1031 exchange often uses cap rate as the first screen across a list of candidates, since the exchange timeline doesn't leave room for exhaustive underwriting on every option. A property trading meaningfully below the market cap rate for its type deserves a harder look at what's driving the price, and a property trading well above it deserves a harder look at the risk behind that yield, before it goes on an identification list under the 45-day clock.
Where Cap Rate Shows Up On A DST Offering
DST offerings publish a projected cap rate as part of the offering materials, calculated the same way as a directly owned property, since the underlying real estate still produces NOI even though the investor holds a trust interest rather than title. Comparing that projected number against comparable direct-ownership properties in the same asset class is a reasonable diligence step before committing 1031 proceeds to a specific DST.
Common Investing Questions
What's considered a good cap rate for a Milwaukee investment property?
It varies by asset type and neighborhood, but stabilized multifamily and retail in established Milwaukee-area submarkets often trade in the 5.5 to 7.5 percent range, with higher numbers typically signaling more risk rather than a better deal.
Does a higher cap rate always mean a better investment?
No. A higher cap rate usually compensates for more risk, such as a shorter lease term, weaker location, or deferred maintenance, and should prompt closer diligence rather than being read as a straightforward bargain.
How is cap rate different from cash-on-cash return?
Cap rate ignores financing and measures the property's unlevered yield, while cash-on-cash return measures income against the actual cash invested after factoring in the mortgage, which is why the two numbers can differ significantly on the same deal.
Can cap rate change after a property is purchased?
The property's going-in cap rate is fixed at purchase, but its performance can drift from projections if rents, vacancy, or expenses move differently than underwritten, which is why NOI should be re-evaluated regularly, not just at acquisition.
Is cap rate published for DST offerings the same way it is for a direct property listing?
Yes, DST sponsors typically disclose a projected cap rate and income distribution rate in the offering documents, calculated from the underlying property's NOI, allowing a reasonable side-by-side comparison against direct-ownership alternatives.
