Quick Answer: Cap rate measures a property's current return based on its purchase price or market value. Yield on cost (also called return on cost) measures the expected return based on total development or renovation cost. Cap rate reflects today's performance; yield on cost reflects the projected return on an investment strategy that includes value creation.
For a deep dive into each metric individually, see our full cap rate guide and full yield on cost guide.
What Is Cap Rate?
Capitalization rate expresses a property's net operating income as a percentage of its current market value or purchase price. It is the most widely used metric for comparing stabilized property values in commercial real estate.
Example: $1,200,000 NOI ÷ $20,000,000 value = 6.0% cap rate
What Is Yield on Cost?
Yield on cost (YoC) measures the projected stabilized NOI as a percentage of total project cost — including acquisition price plus all capital expenditures, renovation costs, and development expenses. It is the key metric for value-add and development underwriting.
Example: $1,500,000 stabilized NOI ÷ $22,000,000 total cost = 6.82% YoC
Key Differences: Cap Rate vs Yield on Cost
| Factor | Cap Rate | Yield on Cost |
|---|---|---|
| NOI used | Current / in-place NOI | Projected stabilized NOI |
| Denominator | Purchase price or market value | Total project cost (acquisition + capex) |
| Best for | Stabilized acquisitions | Value-add and development |
| Risk profile | Lower — based on actual performance | Higher — based on projections |
| Timing | Point-in-time snapshot | Forward-looking |
| Includes renovation costs | No | Yes |
When to Use Each Metric
Use cap rate when: Pricing a stabilized property, comparing assets in the same market, assessing market conditions, or calculating property value from NOI. Cap rate is the universal language of stabilized property valuation.
Use yield on cost when: Underwriting a value-add renovation, evaluating a ground-up development, or measuring the spread between your all-in cost basis and market cap rates. The YoC-to-cap-rate spread is the value creation premium — the wider the spread, the more value you are creating.
How They Relate in Practice
Sophisticated multifamily operators use both metrics together. A typical value-add deal might look like this: acquire at a 5.5% going-in cap rate, invest $3M in renovations, and achieve a 7.2% yield on cost at stabilization. If the exit cap rate is 5.5%, the spread between YoC and exit cap represents significant equity value creation.
The rule of thumb: target a yield on cost that is at least 100–200 basis points above the market cap rate. Below that, the execution risk of a renovation may not justify the effort compared to buying a stabilized asset. Run the numbers with our cap rate calculator and yield on cost calculator, or see how BubbleGum BI's financial dashboards track these metrics across every deal in your portfolio.
Analyze Cap Rates and Yield on Cost Across Deals
BubbleGum BI tracks cap rates, yield on cost, and value creation metrics across your portfolio so you can measure actual performance against underwriting assumptions.
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