Guides
The definitions and underwriting conventions behind the calculators, written as reference rather than commentary. Every guide cites its sources and links to the tool that applies the idea.
- DSCR Loan Requirements: What Lenders Check A DSCR loan is underwritten on the property, not your salary. The requirements lenders test: coverage, appraisal, reserves, documents — and why files fail.
Updated November 13, 2026
- What Is DSCR? Coverage Ratio Explained DSCR measures how many times a property’s net operating income covers its mortgage. Definition, formula, a worked duplex example, and the reserve stress test.
Updated November 13, 2026
- The BRRRR Method, Step by Step Buy, rehab, rent, refinance, repeat — how each step works, the arithmetic at the refinance, a worked example, and the points where BRRRR deals usually fail.
Updated November 13, 2026
- The 70% Rule Explained (and When It Fails) What the 70% rule actually calculates, what the other 30% pays for, a worked flipping example, and the cases where the shortcut gives a bad offer.
Updated November 13, 2026
- How to Calculate NOI (With a Full Example) Net operating income, line by line: what goes in, what stays out, why percentage expenses use gross rent, and how NOI differs from cash flow.
Updated November 13, 2026
- What Is a Good Cap Rate? A Practical Guide There is no universal good cap rate. What the number encodes, why markets differ, and how to compare two properties without fooling yourself.
Updated November 13, 2026