Why It Matters
The deal analysis process is how you evaluate a rental property before buying. You collect market-rent from rental-comps, estimate operating-expenses and vacancy-loss, calculate noi, model financing, and project cash-on-cash-return and cap-rate. The output is a go-no-go-decision. Use a rental-property-calculator or spreadsheet-analysis to run scenarios. Conservative-underwriting keeps you from overpaying.
At a Glance
- What it is: Systematic evaluation of a property's financials before purchase
- Why it matters: Prevents overpaying; surfaces deal quality
- Key inputs: Rent comps, expenses, acquisition-cost, financing
- Key outputs: Noi, cash-flow, cash-on-cash-return
- End point: Go-no-go-decision
How It Works
Step 1: Rent. Use rental-comps to estimate market-rent. Don't use the listing's "projected" rent unless it's comp-backed. Apply vacancy-loss (8–10%) to get effective-gross-income.
Step 2: Expenses. Property-tax, insurance, maintenance, capex reserve, property management (if applicable). Typically 35–50% of gross for small multi-family. Use actuals when available; otherwise estimate from sold-comps and local norms.
Step 3: NOI. Effective-gross-income minus operating-expenses = noi. This is the property's income before debt.
Step 4: Financing. Model piti or debt service. Include acquisition-cost and closing-costs in total-investment.
Step 5: Returns. Cash-flow = noi − debt service. Cash-on-cash-return = annual cash flow ÷ total-investment. Cap-rate = noi ÷ price.
Step 6: Sensitivity. Run sensitivity-analysis and scenario-planning—what if rent is 5% lower? Vacancy 12%?
Real-World Example
Ava in Memphis. Ava analyzed a 4-unit listed at $385,000. Rental-comps supported $3,800 gross. She used 8% vacancy → $3,496 effective-gross-income. Expenses: $1,540. Noi: $1,956. At 6.5% cap, value = $30,092. Seller wanted $385,000 (5.1% cap). She modeled 25% down, 7% rate. Debt service: $2,140. Negative cash-flow of $184. Cash-on-cash-return negative. She passed. Six months later it sold for $362,000—the buyer had overpaid initially.
Pros & Cons
- Prevents emotional overpaying
- Surfaces true returns
- Standardizes evaluation across deals
- Supports investment-criteria
- Requires discipline and data
- Can miss off-market nuance
- Analysis-paralysis risk if overdone
Watch Out
- Optimistic rent: Use conservative-underwriting; don't inflate to make the deal work
- Expense underestimation: CapEx and maintenance are real—use 1%+ of value
- Ignoring acquisition-cost: Closing costs and rehab add to total-investment
Ask an Investor
The Takeaway
The deal analysis process is your filter. Run every property through it. Use conservative-underwriting. Make the go-no-go-decision based on numbers, not emotion.