Cap rate is the single most-used metric in real estate investing, and for good reason: it strips out the financing question and gives you a clean number to compare across properties, markets, and asset classes. This guide covers the cap rate formula, how to calculate NOI (the harder part), current 2026 cap rates by class and market, the Gordon Model for thinking about caps in terms of growth, and how to use cap rate to evaluate a deal in practice.

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What is a Cap Rate?

A cap rate (capitalization rate) is the unleveraged yield on a rental property — the annual return you'd earn if you bought the property all-cash and held it forever. The formula is:

Cap Rate = Net Operating Income (NOI) ÷ Property Value × 100

If a property generates $50,000 in NOI and is priced at $1,000,000, the cap rate is 5.0%. If the same property is priced at $750,000, the cap rate is 6.67%. The price determines the cap, not the other way around — which is exactly why cap rate is the negotiation tool it is.

Worked example: You're evaluating a duplex listed at $425,000. The current rent rolls are $2,400/month per unit, both occupied. Annual gross rent is $57,600. Allow 5% vacancy: effective gross income is $54,720. Annual operating expenses (taxes, insurance, maintenance, management) are about $13,500. NOI = $54,720 − $13,500 = $41,220. Cap rate = $41,220 ÷ $425,000 × 100 = 9.7%. If comparable duplexes in the neighborhood are trading at 7%, this is either a bargain or there's something wrong with the rent rolls — always verify.

How to Calculate NOI (The Harder Part)

The cap rate formula is one line. The work is in calculating NOI correctly. NOI is property income minus property operating expenses — but exactly what counts as income and what counts as an expense trips up a lot of investors.

Income that counts toward NOI:

  • Gross rental income from all units (use market rent for vacant units, not zero)
  • Other income the property generates: laundry, parking, pet rent, storage fees, application fees, late fees
  • Mark-to-market on under-market leases (loss-to-lease capture as leases roll to market rents)

Expenses that count toward NOI:

  • Property taxes
  • Insurance (property, liability, flood if applicable)
  • Property management fees (typically 6-10% of gross rent for residential)
  • Repairs and maintenance
  • Utilities paid by owner (water, trash, common-area electric)
  • HOA or condo fees (if any)
  • Marketing and leasing costs
  • Pest control, landscaping, snow removal
  • Reserves for replacement (a reasonable 5-8% of gross rent)

Expenses that DO NOT count toward NOI:

  • Mortgage principal and interest (these are financing, not operating)
  • Income taxes (these are personal, not property-level)
  • Depreciation (a non-cash accounting item)
  • Capital expenditures — roof replacement, new HVAC, foundation repair. These are typically capitalized and depreciated, not expensed against NOI
  • Amortization of loan points or closing costs

The biggest mistake investors make: subtracting the mortgage payment from gross rent and calling the result "NOI." That number is cash flow, not NOI. Cap rate and cash-on-cash return use different inputs and answer different questions.

What is a "Good" Cap Rate in 2026?

The honest answer is "it depends." Cap rates in 2026 vary by asset class, submarket, building condition, and lease structure. But here are the national ranges most market participants are quoting as of mid-2026, synthesized from the JPMorgan Q4 2025 Investor Survey, the CBRE North America Cap Rate Survey (H2 2025), and Tyler Cauble's Q1 2026 market reports:

Property TypeClass AClass BClass C
Multifamily4.5 - 6.0%5.5 - 7.0%7.0 - 9.0%
Industrial5.5 - 7.0%6.5 - 8.0%8.0 - 10.0%
Office6.0 - 8.0%7.5 - 9.5%9.0 - 11.0%
Retail (Strip / Grocery-Anchored)6.5 - 7.5%7.0 - 8.5%8.5 - 10.0%
Self-Storage5.5 - 7.0%6.5 - 8.0%
Single-Family Rental (SFR)5.5 - 7.0%7.5 - 9.5%
Short-Term Rental (STR)6.0 - 11.0%

Working rules of thumb:

  • 5-7% is the typical range for stabilized residential and industrial in primary markets. Expect appreciation to do most of the heavy lifting on total return.
  • 7-9% is common for Class B/C multifamily, value-add deals, and secondary markets. Often paired with renovation or operational improvement upside.
  • 9-12% signals either higher risk or significant value-add potential. Be skeptical without a clear thesis.
  • 12%+ usually means distress, deferred maintenance, or a thin market. Verify every input before underwriting.

Cap Rate by City and Market (2026)

National averages hide enormous submarket variation. A Class A multifamily cap in San Francisco is structurally different from one in Indianapolis. Here's a snapshot of typical multifamily Class B cap rate ranges in major US markets based on Q4 2025 / Q1 2026 broker reports:

MarketClass B Multifamily Cap RateNotes
New York City4.5 - 5.5%Tight supply, rent-regulated asset complexity
San Francisco / Bay Area5.0 - 6.0%Tech-cycle exposure, rent control discussion
Los Angeles4.75 - 5.75%Proposition 13 / rent control overlay
Boston5.0 - 6.0%Institutional core, strong rent growth
Seattle5.25 - 6.25%Tech-driven volatility
Washington DC5.5 - 6.5%Federal employment tailwind
Denver / Austin / Phoenix5.75 - 6.75%Sun Belt construction pressure
Dallas / Houston6.0 - 7.0%High supply, job-growth positive
Atlanta6.0 - 7.0%Institutional favorite, deep tenant pool
Indianapolis / Kansas City7.0 - 8.0%Midwest secondary markets
Memphis / Birmingham7.5 - 9.0%Higher yield, thinner exit markets
Cleveland / Detroit8.0 - 10.0%Structural decline risk priced in

Ranges synthesized from CBRE, JLL, Newmark, and Marcus & Millichap quarterly reports. Treat as directional, not as the only comp you need.

The pattern is consistent: gateway coastal markets (NYC, SF, LA) trade at the lowest cap rates because they're considered the safest institutional investments. Sun Belt markets (Dallas, Houston, Atlanta, Phoenix) cluster in the middle — growth markets with institutional flow. Mid-tier and tertiary markets offer the highest yields but require more underwriting effort and have thinner buyer pools at exit.

7 Factors That Affect Cap Rate

Cap rate is a function of risk. The higher the perceived risk, the higher the cap rate (lower price for the same NOI). Here are the seven factors that move cap rates:

  1. Asset class. Multifamily trades at lower caps than office or retail because residential income is more durable across cycles.
  2. Location and submarket fundamentals. Job growth, population trends, supply pipeline, rent control risk, tax climate. A growing supply-constrained market commands lower caps.
  3. Lease length and tenant credit. A 10-year NNN lease with an investment-grade tenant trades at a lower cap than month-to-month residential. The longer and more creditworthy the income stream, the lower the cap.
  4. Building age and condition. Newer construction with longer remaining useful life trades at lower caps. A 1980s property with original systems requires more capital expenditure reserves and gets a higher cap.
  5. Financing environment. When the 10-year Treasury is low and credit is cheap, buyers accept lower cap rates because their debt service is lower. When rates rise, cap rates rise too — there's a roughly 50-100 basis point spread between the 10-year Treasury and stabilized multifamily cap rates.
  6. Market cycle and capital flows. When institutional capital floods into real estate (the 2021-2022 vintage), cap rates compress because everyone's competing for the same deals. When capital pulls back, caps expand.
  7. Rent growth expectations. Properties in high-growth markets where rents are expected to rise 4-5% annually can trade at lower going-in caps because the forward yield (NOI ÷ purchase price) is the present-day number plus growth. This is where the Gordon Model comes in.

The Gordon Model for Cap Rate

The Gordon Growth Model (Myron Gordon, 1956, adapted to real estate) is the cleanest way to think about cap rate as a function of return expectations and growth:

Cap Rate = Required Rate of Return − Long-Term NOI Growth Rate

If you require a 9% total return on your equity (a common institutional benchmark) and you expect NOI to grow at 2% annually (roughly the long-run inflation rate), the implied cap rate is 7%. If you require 9% but expect 4% growth (a hot Sun Belt market), you can pay a 5% cap and still hit your 9% total return through forced appreciation.

The model is also useful for sanity-checking a deal: if a property is being marketed at a 4.5% cap and you don't see a credible 4-5% growth path in the submarket, you're buying yield compression, not yield — and that's a bet on continued buyer demand, not fundamentals.

Cap Rate Compression and Expansion: What to Expect in 2026

CBRE's H2 2025 Cap Rate Survey showed that most sectors are still in mild compression territory — going-in cap rates are at or near multi-year lows in industrial and multifamily. Office is the exception, with cap rates expanding meaningfully since 2022 as remote work re-priced the asset class.

The 2026 outlook: CBRE's U.S. Real Estate Market Outlook 2026 forecasts cap rates for most property types to compress by 5 to 15 basis points in 2026, with office the exception (continued expansion). Industrial remains the tightest sector; multifamily in Sun Belt metros has elevated supply pressure that may delay compression in those submarkets.

What this means for buyers: 2026 is not 2021. The era of "buy anything, capital will appreciate it" is over. Deals need to underwrite on current cash flow plus credible growth, not on a compression thesis. If you're buying at a 4.5% cap in a Sun Belt market with 8% rent growth, you're betting the comps stay high. If you're buying at a 7% cap in a stable Midwest market with 2% rent growth, you're buying yield — and that strategy has historically held up better in flat-to-down cycles.

Common Cap Rate Mistakes

The four mistakes that come up most often in actual deal reviews:

  1. Mixing up cap rate and gross yield. Gross yield uses gross rent (no vacancy, no expenses deducted). It will always look more attractive than cap rate and is not a comparable number. If a listing says "10% yield," confirm whether it's gross or net before comparing to other deals.
  2. Ignoring vacancy. "The property is fully leased" today doesn't mean it stays leased. Underwrite to at least 5-8% vacancy even for stabilized assets in primary markets. The lease that rolls next month might not renew at the same rent.
  3. Projecting pro-forma rent without evidence. "The rents are below market" is a common seller pitch. Verify with actual comps in the building or competing properties. If the seller can't show comparable in-place rents, don't underwrite to higher numbers.
  4. Using trailing NOI instead of forward NOI. A property's T-12 (trailing 12 months) NOI captures the past, not the future. If a major tenant is leaving next quarter or rents were just marked to market, the T-12 NOI is misleading. Build a forward 12-month NOI for underwriting.

How to Evaluate a Deal Using Cap Rate (3 Examples)

The mechanic is always the same: compute NOI, divide by price, get a cap rate. The judgment is in comparing that cap to the submarket and the asset profile. Three worked examples:

Example 1: Good cap. A Class B 12-unit apartment building in Indianapolis. Asking price: $1,800,000. In-place rent roll: $144,000/year gross, 6% vacancy assumed, $48,000 in operating expenses. NOI = $144,000 × 0.94 − $48,000 = $87,360. Cap rate = $87,360 ÷ $1,800,000 = 4.85%. Comparable Class B sales in Indianapolis traded at 5.5-6.5% in the last 90 days. Verdict: asking price implies a tighter cap than comps — either negotiate down or get evidence the property has above-market fundamentals (recent renovation, strong tenant base, below-market expenses).

Example 2: Mediocre cap. Same building type in a tertiary market. Asking: $950,000. NOI: $65,000 (calculated the same way). Cap rate = 6.84%. Market range: 7.5-8.5% for similar product. Verdict: not a screaming deal, but defensible if the property has stable tenancy and the seller is firm. Possibly worth a 2-3% discount to asking.

Example 3: Overpriced. A boutique 4-plex in a trendy neighborhood. Asking: $1,200,000. NOI: $48,000 (the rents are projected, not actual — current leases are at 75% of the pro-forma number). Pro-forma cap: 4.0%. Adjusted cap (using actual rents): $36,000 ÷ $1,200,000 = 3.0%. Verdict: overpriced at 3% actual cap in any market. Either pass or get a 30%+ discount.

Use our free cap rate calculator to model these scenarios with your own numbers. The instant feedback on how cap rate moves with rent and expense changes is the fastest way to internalize the math.

Cap Rate Frequently Asked Questions

What is cap rate compression?

Cap rate compression is when going-in cap rates fall across a market — buyers accept lower yields (and pay higher prices) for the same NOI. It usually happens when interest rates fall, capital floods into real estate, or rent growth expectations rise. Compression is the seller-friendly condition; expansion (caps rising) is buyer-friendly.

What is the Gordon Model for cap rates?

Cap Rate = Required Rate of Return − Long-Term Growth Rate. If you require a 9% total return and expect 2% annual NOI growth, the implied cap rate is 7%. The model is useful for pricing properties with growth assumptions and for back-solving what growth rate a given cap rate implies.

Are higher cap rates always better?

Not always. A higher cap rate can signal higher risk (deferred maintenance, weak submarket, lease rollover risk) or higher expected return. The right question is: what am I getting for the extra yield? If the answer is "exposure to vacancy and structural decline," the high cap is not actually a bargain.

How do I find current cap rates in my market?

Three primary sources: (1) CoStar and RealPage subscription comp databases, (2) brokerage market reports (CBRE, JLL, Cushman, Newmark publish quarterly), and (3) closed-deal data from county recorder offices. For a free read, the JPMorgan Investor Survey, CBRE Cap Rate Survey, and Federal Reserve Beige Book all include cap rate commentary by sector.

Is 7% a good cap rate?

It depends on the asset and market. For Class B/C multifamily in a secondary market in 2026, 7% is reasonable. For Class A multifamily in a primary coastal market, 7% would be unusually high and worth investigating — either it's a value-add opportunity or there's a hidden issue. Always benchmark against recent comps in the specific submarket and property type.

Ready to run the numbers? Use our free Cap Rate Calculator to see what cap rate your target property would generate. If you're comparing cap rate to other return metrics, see NOI vs Cap Rate vs Cash-on-Cash Return.

Disclaimer: This article provides general educational information about cap rates and real estate investing. Cap rates, market data, and underwriting assumptions change constantly. Nothing here is investment advice or a recommendation to buy any specific property. Always consult a licensed real estate professional before making investment decisions.