Rental property underwriting guides

Explore practical rental property underwriting guides, with two new articles published each week. Arend from Dealunderwriter reviews every guide before publication. Topics include DSCR loan requirements, rental property cash flow, expense ratios, financing, cap rates, cash-on-cash return, BRRRR, Section 8, and lender-style deal analysis.

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Frequently asked questions about rental underwriting

What does this blog cover?

Every article covers one concrete rental underwriting question: DSCR loan requirements and pricing, cap rate versus cash-on-cash return, realistic expense ratio benchmarks, property management fee stacks, Section 8 economics, BRRRR sequencing and how to run a full lender-style underwrite on a single-family or small multifamily deal.

How often are new articles published?

Two new articles a week. Drafts are generated against a fixed research outline, then reviewed and edited before publishing, so nothing goes live without a human pass over the numbers and the sources.

Who writes and reviews the articles?

Arend from DealUnderwriter writes and reviews every published piece. Where AI assists with drafting, that is disclosed in the terms, and every formula, benchmark and worked example is checked by hand before publication.

What DSCR do lenders actually require?

Most 2026 rental lenders price cleanly from a 1.20x debt service coverage ratio, will still quote between 1.00x and 1.20x with a rate or leverage penalty, and treat anything under 1.00x as a no unless you add reserves or reduce leverage.

Should I judge a small rental on cap rate or cash-on-cash return?

Use cash-on-cash return for a leveraged small residential deal, because it reflects the debt you actually take on. Cap rate is a market comparison tool for unlevered income and is unreliable on one-to-four unit properties where the comparable set is thin.

What expense ratio should I underwrite?

For most small residential rentals, underwrite operating expenses at 35 to 50 percent of gross rent, including vacancy, maintenance, management, taxes, insurance and a capital expenditure reserve. Ratios below 30 percent almost always mean a line item is missing.

Can I test an article's numbers on my own deal?

Yes. Every article links into the free rental underwriting calculator, which returns cap rate, cash-on-cash return, DSCR, NOI, monthly cash flow and a buy-or-pass verdict from your own purchase price, rent and financing inputs.