What Is a Cap Rate? Real Estate Capitalization Rate Explained
A cap rate (short for capitalization rate) is a real estate metric expressing the relationship between a property's net operating income (NOI) and its market value or purchase price — typically shown as a percentage. Investors and appraisers use cap rates to compare properties, estimate value, and discuss market yield expectations without assuming a specific buyer's financing. A higher cap rate generally implies higher implied yield relative to price and often higher perceived risk; a lower cap rate suggests lower yield relative to price and often stronger demand or lower risk — though context always matters.
This article is general financial education about a real estate term, not investment, tax, or legal advice. Cap rates alone do not determine whether a deal is good. Consult licensed professionals before buying or selling property.
What It Is
The basic formula:
Cap Rate = Net Operating Income (NOI) ÷ Property Value (or Purchase Price)
Often multiplied by 100 to express as a percentage.
Net operating income (NOI)
Income from operations minus operating expenses — think rent and ancillary income minus property taxes, insurance, maintenance, management, utilities paid by owner, and similar line items. NOI excludes:
- Mortgage payments (debt service)
- Depreciation (tax accounting)
- Capital expenditures (major roof, HVAC replacements — though analysts sometimes adjust)
- Income taxes
NOI approximates unlevered cash flow from operations — income the property generates before how you finance it.
Property value
Current market value, appraised value, or actual sale price depending on the analysis. Using inconsistent numerator and denominator breaks comparisons.
Worked Example
A small retail building:
- Annual gross rent: $200,000
- Vacancy and credit loss: $10,000
- Effective gross income: $190,000
- Operating expenses: $70,000
- NOI: $120,000
- Sale price: $1,500,000
Cap rate = $120,000 ÷ $1,500,000 = 0.08 = 8%
If an investor targets 7% cap markets, this property at 8% might look relatively cheaper on a yield basis — or signal higher risk (location, tenant quality, lease rollover) explaining the higher cap.
What Cap Rates Communicate
Cap rates function like a simple yield snapshot for stabilized income properties:
- Market cap rate trends reflect interest rates, investor appetite, supply/demand, and risk premiums
- Lower cap rates often appear in prime locations, credit tenants, long leases
- Higher cap rates often appear in secondary markets, shorter leases, value-add or distressed assets
They help answer: "At this price, what return does operating income alone imply if I paid all cash?"
Common Uses
| Use | How cap rate applies |
|-----|---------------------|
| Quick comparison | Compare two apartment buildings' NOI yields at asking prices |
| Valuation hint | Value ≈ NOI ÷ Market Cap Rate for stabilized assets |
| Market reporting | Brokerages publish cap rate surveys by city and asset class |
| Seller pricing | Sellers anchor asks to recent comps' cap rates |
Institutional investors layer discounted cash flow (DCF), IRR, debt terms, and capex reserves — cap rate is a starting shorthand, not the full model.
Cap Rate vs. Other Metrics
Cash-on-cash return
Uses actual cash invested and after-debt cash flow — depends on leverage, unlike cap rate.
Gross rent multiplier (GRM)
Price ÷ gross rent — ignores expenses; rougher than cap rate.
Yield on cost
NOI on completed project ÷ total development cost — development-specific.
Cap rate ignores financing, tax benefits, and future rent growth unless you build those into separate analyses.
Common Examples
| Property type | Illustrative cap rate range (varies widely) |
|---------------|---------------------------------------------|
| Class A urban multifamily (low cap market) | Might trade sub-4% to 5% in hot cycles |
| Suburban strip retail | Often higher than core multifamily in same city |
| Single-tenant net lease (investment grade) | Lower cap due to perceived stability |
| Older office with vacancy | Higher cap reflecting lease-up risk |
Numbers shift with Fed policy, local economy, and asset-specific facts — never treat examples as current market quotes.
Common Misconceptions
"Higher cap rate always means better deal"
Higher cap can mean bargain or problem property — deferred maintenance, expiring leases, environmental issues. Due diligence required.
"Cap rate includes mortgage"
No — cap rate is debt-neutral. Your leveraged return differs based on loan rate, LTV, and amortization.
"Residential homes always have cap rates"
Owner-occupied homes are not typically analyzed via cap rate. Rental houses and apartment buildings are. Cap rate is income-property language.
"Cap rate equals ROI"
ROI can include appreciation, tax shields, refinance proceeds — cap rate focuses on one-year NOI vs. price snapshot.
"One city has one cap rate"
Markets split by submarket, asset class, age, tenant — broker surveys report ranges, not single numbers.
"Cap rate determines property taxes"
Assessors use their own methodologies — related to income sometimes, but not literally your back-of-envelope cap rate.
FAQ
What is a good cap rate? There is no universal "good" — compare to risk-free rates, local comps, and your required return. A 6% cap differs in meaning when 10-year Treasuries move from 2% to 5%.
Can cap rates be negative? If NOI is negative (expenses exceed income), yes — signals distressed operations, not a normal stabilized investment metric.
How do rising interest rates affect cap rates? Often cap rates rise (prices fall relative to NOI) as buyers demand higher yields to compete with bonds — timing and magnitude vary.
Is cap rate used for hotels? Hotels use specialized metrics (RevPAR, yield per room) because income volatility differs from long-term leases.
Should beginners buy solely on cap rate? No — inspect leases, tenants, capex, zoning, environmental reports, and financing. Cap rate is one line in a pro forma.
The Takeaway
A cap rate divides net operating income by property value to express an unlevered yield percentage — a quick comparison tool in commercial and rental real estate. Higher caps generally imply higher yield relative to price and often higher risk; lower caps the opposite. Use cap rates with full underwriting, not as a standalone buy signal.
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*This article is general real estate terminology education only — not investment, tax, or legal advice. Market conditions and property-specific factors require professional analysis.*