How to Analyze a Rental Property in 15 Minutes

A repeatable process for screening rental deals: the quick filters, the real expense list, the return metrics that matter, and the stress test.

You’ll look at dozens of listings for every one you buy. A fast, consistent process lets you kill bad deals in minutes and spend real time only on the contenders.

Stage 1: 60-second filters

Reject or advance on these before opening a spreadsheet:

• 1% rule. Is monthly rent ≥ 1% of price? Rare in expensive metros, common in the Midwest/South. A near-miss is fine; a big miss usually means negative cash flow.
• Location. Would a stable tenant want to live there? School zone, crime, commute, employment base.
• Obvious capex. Roof, HVAC, windows, foundation, kitchen age. Big-ticket items due soon change everything.

Stage 2: Build the real expense number

The number-one beginner mistake is a thin expense estimate. Include all of this, monthly:

• Property taxes — at the reassessed value after sale, not the seller’s bill
• Insurance — landlord policies cost more than owner-occupied
• Property management — 8–10% of rent even if you self-manage today
• Repairs & maintenance — start at ~1% of value per year
• Capital expenditure reserve — another ~1% of value per year
• Vacancy — 5–8% of annual rent
• HOA, lawn, snow, pest, and any owner-paid utilities

Stage 3: Run the metrics

Put price, financing, rent, and that expense number into the rental ROI calculator and read:

• Cash flow — positive after everything above, including the mortgage?
• Cash-on-cash — is the year-one cash return worth tying up your capital? Many investors want 8%+; appreciation markets run lower.
• Cap rate — how does the unlevered yield compare to other local deals? (What cap rate means.)

Stage 4: Stress test

A deal that only works on perfect assumptions isn’t a deal. Re-run with:

• Vacancy at 8–10%
• Rent 5% below asking
• Interest rate 0.5–1% higher (if you haven’t locked)
• A full capex reserve

If it still cash-flows or breaks even, it can survive a rough patch. If it goes sharply negative, you’re betting entirely on appreciation — a valid strategy, but know that’s the bet you’re making.

Stage 5: Verify before you’re committed

During due diligence, replace estimates with facts: a rent roll and leases, the last 12–24 months of expenses, a professional inspection, insurance quotes, and tax records. Adjust the model. If the deal changed, walk away without regret — there’s always another.