CHEATSHEET

Investor Math

The handful of numbers that decide whether a property makes money. Rough guides — always check local prices.

The 70% rule

Max offer = (After-repair value × 70%) − repairs

Example: worth $300k fixed, $40k repairs → $300k × 0.7 − $40k = $170k. The 30% covers fees, holding costs and profit.

Value − repairs − holding − selling costs − profit

Selling costs are often 6–10% of the sale price. Pick your profit first, then work backwards.

Add up loan interest, rates/taxes, insurance and utilities for each month you own it. Budget for 1.5× the time you expect — projects run late.

Cosmetic (paint, floors, fixtures)$15–$30 per sq ft

Medium (kitchen, bathrooms)$30–$60 per sq ft

Full renovation$60–$100+ per sq ft

Roof replacement$8k–$20k

Add a 10–15% buffer for surprises.

1% rule: monthly rent should be about 1% of the price. 50% rule: expect about half the rent to go on costs (excluding the loan).

Turn five numbers into three offers in 60 seconds. Free.

General education only — not financial or legal advice. Check local laws and speak to a professional before signing anything.