How do you analyze a real estate investment? What's the role of cap rates, NOI, and DCF?

Question

AcadiFi · Accepted Answer

Real estate valuation uses multiple approaches, but they all revolve around Net Operating Income (NOI) and cash flow analysis. Here's a structured framework.

**Net Operating Income (NOI):**
NOI is the foundation of all real estate analysis:

NOI = Gross Potential Rent - Vacancy Loss - Operating Expenses

Important: NOI does NOT include debt service (mortgage payments), depreciation, or capital expenditures. It represents the property's operating profitability before financing decisions.

**Approach 1: Capitalization Rate (Income Approach):**

Property Value = NOI / Cap Rate

The cap rate is the required rate of return on the property, derived from comparable sales:

Cap Rate = NOI / Sale Price (from comparable transactions)

*Example:* An office building generates NOI of $720,000. Comparable office buildings in the area sell at cap rates of 6.5%.
Value = $720,000 / 0.065 = **$11,077,000**

Lower cap rate = higher value = more expensive market.

**Approach 2: DCF Analysis:**
Project cash flows over a holding period (typically 5-10 years), estimate a terminal sale price, and discount everything back.

```mermaid
flowchart TD
    A[Year 1-10 NOI Projections] --> B[Discount at required return]
    C[Terminal Sale Price Year 10] --> D[Estimated using exit cap rate]
    D --> E[Terminal Value = NOI_11 / Exit Cap Rate]
    B --> F[PV of Operating Cash Flows]
    E --> G[PV of Terminal Value]
    F --> H[Property Value = PV CFs + PV Terminal]
    G --> H
```

**Approach 3: Cash-on-Cash Return (Levered Analysis):**

Cash-on-Cash = Annual Before-Tax Cash Flow / Total Cash Invested

This measures the return on YOUR invested equity, accounting for mortgage payments:

Before-Tax CF = NOI - Debt Service

*Example:* You buy a property for $2M with $500K down payment. NOI = $140,000. Annual debt service = $95,000.
Before-tax CF = $140,000 - $95,000 = $45,000
Cash-on-cash = $45,000 / $500,000 = **9.0%**

Notice the leverage amplification: unlevered return (cap rate) = 7.0%, but leveraged cash return = 9.0%.

**Valuation Decision Framework:**

| Metric | Purpose | Decision Rule |
|--------|---------|---------------|
| Cap Rate | Quick valuation & comparison | Buy if cap rate > required return |
| DCF NPV | Comprehensive value analysis | Buy if NPV > 0 at required return |
| Cash-on-Cash | Equity return measure | Compare to alternative investments |
| IRR | Total return with leverage | Buy if IRR > hurdle rate |

**Key Risks:**
- **Vacancy risk:** Anchor tenant departure can devastate NOI
- **Interest rate risk:** Rising rates increase cap rates (lower values) AND increase financing costs
- **Illiquidity:** Can't sell quickly without a significant discount
- **Concentration:** Single property = undiversified

Practice real estate valuation problems in our CFA Level II question bank.

How do you analyze a real estate investment? What's the role of cap rates, NOI, and DCF?

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Practice Questions

Metric	Purpose	Decision Rule
Cap Rate	Quick valuation & comparison	Buy if cap rate > required return
DCF NPV	Comprehensive value analysis	Buy if NPV > 0 at required return
Cash-on-Cash	Equity return measure	Compare to alternative investments
IRR	Total return with leverage	Buy if IRR > hurdle rate