Rental Property Analysis: Step by Step
Rental property analysis determines whether a property will generate positive cash flow and meet your return requirements. Unlike flip analysis (which focuses on a single sale), rental analysis evaluates ongoing income against ongoing expenses over the life of the investment. This guide walks through the complete analysis framework used by professional rental investors.
Step 1: Estimate gross rental income
Pull rental comps for the area. Search for properties currently listed for rent and recently leased within 0.5 miles that match your property's bedroom count, square footage, and condition. Use 3-5 comps and take the median rent.
For a 3-bed/2-bath in your target market, you might find rental comps ranging from $1,100 to $1,400/month. The median is $1,250/month. Annual gross rental income: $15,000.
Step 2: Calculate effective gross income
Subtract a vacancy allowance from gross rent. Budget 5-8% for vacancy (lost rent between tenants) depending on your market's demand level. At 7% vacancy: $15,000 × 0.93 = $13,950 effective gross income.
Step 3: Estimate operating expenses
| Expense | Monthly | Annual |
|---|---|---|
| Property taxes | $200 | $2,400 |
| Insurance | $100 | $1,200 |
| Maintenance (8% of rent) | $100 | $1,200 |
| Property management (10%) | $125 | $1,500 |
| Capital expenditures (5%) | $63 | $750 |
| Total operating expenses | $588 | $7,050 |
Step 4: Calculate NOI
Net Operating Income = Effective Gross Income − Operating Expenses
NOI = $13,950 − $7,050 = $6,900/year
Step 5: Calculate key metrics
Cap Rate: NOI ÷ Purchase Price. If purchase price is $90,000: $6,900 ÷ $90,000 = 7.67%. Good — above the 7% target for cash flow markets.
Cash-on-Cash Return: Annual cash flow (after mortgage) ÷ Total cash invested. With a $72,000 mortgage at 7% ($479/month P&I) and $18,000 down: Annual cash flow = $6,900 NOI − $5,748 mortgage = $1,152. Cash-on-cash = $1,152 ÷ $22,000 (down + closing) = 5.24%. Moderate — leverage reduces cash-on-cash compared to cap rate.
DSCR: NOI ÷ Annual Debt Service. $6,900 ÷ $5,748 = 1.20. Meets the 1.20 minimum for most DSCR lenders.
Total ROI includes appreciation (3-4%/year), principal paydown by tenant (~$2,400/year in early years), and tax benefits (depreciation). True total return on a $22,000 investment often exceeds 20% annually when all factors are included. See our ROI guide for the full calculation.
The quick screening tests
1% Rule: Monthly rent should be at least 1% of the total investment (purchase + repairs). $1,250 rent on a $125,000 all-in = exactly 1%. Passes.
50% Rule: Assume 50% of gross rent goes to expenses (excluding mortgage). If half of $1,250 ($625) is left for mortgage and cash flow, and your mortgage is $479, you have $146/month cash flow. Passes.
These are screening tools only. Always run the full analysis before making an offer.
Related articles
- Cap Rate: The Complete Guide
- Cash-on-Cash Return: How to Calculate
- Real Estate ROI: How to Calculate Returns
- How to Buy a Rental Property
- Best Rental Markets in 2026