Real Estate Cap Rate Calculator

The capitalization rate is the single most important number in commercial real estate valuation — the metric that converts a property's income into an implied value, enables apples-to-apples comparison across different markets and property types, and tells you whether a deal is priced fairly relative to what investors in that market are willing to accept. Understanding cap rates correctly requires knowing not just the formula but what drives them, when they're reliable, and when they mislead. Commercial real estate professionals and serious residential investors who master cap rate analysis avoid the category of mistakes that come from buying based on gross rent numbers, price per square foot, or seller representations about future income.

Market Cap Rates by Property Type and Location

Cap rates vary by asset class and market. National averages in 2024: single-tenant net lease retail 5.5 to 6.5%, multifamily (apartment) 4.5 to 5.5%, suburban office 6.5 to 9.0%, industrial/warehouse 5.0 to 5.8%, self-storage 5.5 to 6.5%, hotel 7.5 to 9.5%, senior housing 6.5 to 8.0%. Coastal gateway markets (NYC, LA, SF, Boston) trade at cap rates 100 to 200 basis points lower than secondary markets (Dallas, Phoenix, Atlanta) for similar asset quality.

Kevin, 44, in Phoenix, Arizona is analyzing a 20-unit apartment building in a B-class Phoenix suburb. Comparable Phoenix multifamily transactions of similar vintage and location are trading at 5.3 to 5.8% cap rates. His underwritten NOI is $112,000. Implied value range: $112,000 ÷ 0.058 = $1,931,000 to $112,000 ÷ 0.053 = $2,113,000. The seller is asking $2,250,000 — implying a 4.98% cap rate. The asking price is above what market transactions support. Either the seller's NOI projections are optimistic (common), the property is significantly better than comparables (possible but must be verified), or the seller is pricing above market and will need to negotiate.

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The Cap Rate Formula

Cap rate = Net Operating Income ÷ Property Value. Alternatively: Property Value = NOI ÷ Cap Rate. A commercial property generating $180,000 in NOI trading at a 6.0% cap rate has an implied value of $180,000 ÷ 0.06 = $3,000,000. A property priced at $2,750,000 with $180,000 NOI has a cap rate of $180,000 ÷ $2,750,000 = 6.55% — a slightly higher yield indicating either a better buy at that price or a riskier asset that demands higher yield compensation.

The relationship between cap rates and property values is the source of significant confusion for investors new to real estate math. When cap rates compress (fall), property values rise for the same income. When cap rates expand (rise), property values fall. This is the mechanism through which rising interest rates hurt commercial real estate values — cap rates tend to follow Treasury yields with some lag, so when the 10-year Treasury yield rises from 2% to 4.5% (as happened 2021 to 2023), cap rates that were 4.5% in 2021 need to expand to 6.0% or higher to maintain spread over the risk-free rate, implying lower property values for the same NOI.

Cap Rate vs Cash-on-Cash Return

Cap rate is a property metric — it's independent of how the deal is financed. Cash-on-cash return is an investor metric — it measures what you personally earn on your cash invested after accounting for debt service. These are different numbers and serve different analytical purposes.

A property at 5.5% cap rate purchased with 30% down and 7.0% mortgage financing will have a cash-on-cash return below the cap rate (because debt service costs more than the cap rate yields, creating negative leverage). A property at 7.0% cap rate with 7.0% mortgage financing is at the neutral leverage point — cash-on-cash equals cap rate. A property at 7.5% cap rate with 6.5% mortgage financing creates positive leverage — cash-on-cash exceeds the cap rate. The relationship between cap rate and financing cost determines whether leverage helps or hurts cash returns.

Calculating Accurate NOI

The quality of a cap rate analysis depends entirely on the accuracy of the NOI calculation. Sellers and brokers present pro forma NOI — projected income assuming full occupancy and optimistic expenses. Underwriting NOI — what a careful investor calculates — is typically 10 to 20% lower, which translates to a true cap rate that's meaningfully lower than the marketed figure.

NOI = Effective Gross Income (after vacancy) - All Operating Expenses. Critical operating expense categories that sellers often understate: management fees (8 to 10% of collected rents for professional management), maintenance and repairs (budget 5 to 8% of gross rent, not zero), capital expenditure reserves (roof, HVAC, parking lot, elevators — often excluded from NOI by sellers), property taxes at their likely post-acquisition reassessed value (sellers report current tax; new owners often trigger reassessment), and insurance at current market rates (policies not recently renewed may be significantly below market).

For a 12-unit apartment building with gross potential rent of $156,000: Vacancy at 7% = -$10,920. Effective Gross Income = $145,080. Operating expenses (management $11,606, property taxes $14,200, insurance $6,800, maintenance $9,100, reserves $7,800, water/sewer $4,200, landscaping/snow $3,600): Total expenses = $57,306. Stabilized NOI = $145,080 - $57,306 = $87,774. At an asking price of $1,500,000: True cap rate = $87,774 ÷ $1,500,000 = 5.85%. The marketed cap rate showing 7.2% reflects the seller's optimistic NOI projection — a 22% gap that represents a $220,000 overvaluation difference.

Cap Rate Limitations

Cap rates are a single-year snapshot that can mislead when rent rolls are below market, leases are expiring soon, or significant capital expenditure is imminent. A property with a 7.0% stabilized cap rate but three of ten tenants on below-market leases expiring in 12 months needs re-leasing risk priced in. A property with a 6.5% cap rate and a 10-year flat roof coming to end of life has an invisible CapEx hit that needs to be modeled in the acquisition price.

Cap rates also don't capture expected rent growth. A 4.5% cap rate property in a supply-constrained, high-growth market (Miami, Austin, Nashville at their peaks) might create better 10-year total returns than a 7.0% cap rate property in a flat market with limited rent growth. The investor who buys solely on day-one cap rate without modeling rent growth, exit cap rate, and hold period return misses the full picture. Internal rate of return (IRR) analysis over a modeled hold period — typically 5 to 10 years — captures what cap rate alone cannot.