What Is a Good Cap Rate for Rental Property?

Cap rate (capitalization rate) is one of the most commonly cited metrics in real estate investing, and also one of the most commonly misunderstood. It measures a property's annual net operating income as a percentage of its value or purchase price — a way of comparing potential returns across different properties independent of how they're financed.

How cap rate is calculated

Cap rate = Net Operating Income (NOI) ÷ Property Value (or Purchase Price) × 100. NOI is your rental income minus operating expenses (property taxes, insurance, maintenance, property management if applicable) — but importantly, not including mortgage payments, since cap rate is meant to reflect the property's return independent of financing.

Example: a property generating $18,000 in annual NOI, purchased for $300,000, has a cap rate of 6% ($18,000 ÷ $300,000).

Typical cap rate ranges

Cap rates vary significantly by market and property type, but as a general reference, many residential rental investors consider 4-10% a common range, with lower cap rates (4-6%) typical in high-demand, low-risk markets with strong appreciation potential, and higher cap rates (7-10%+) more common in higher-risk or slower-growth markets where investors demand more current income to compensate.

A lower cap rate isn't automatically worse

This is the most common misunderstanding: a lower cap rate often reflects a more desirable, lower-risk property or market (think a stable neighborhood in a major metro), while a higher cap rate frequently signals more risk, not necessarily more opportunity — a distressed property in a declining area might show a very attractive cap rate on paper while carrying real risk that the number alone doesn't capture.

Cap rate is a snapshot, not the full picture

Cap rate doesn't account for financing, so it's not the same as your actual cash-on-cash return if you have a mortgage. It also doesn't capture appreciation potential, the property's physical condition and upcoming capital expenses, or how accurately the NOI reflects reality (a seller's pro forma NOI can be optimistic — always verify actual historical income and expenses rather than trusting a projection).

Use cap rate to compare, not to decide alone

Cap rate is most useful for comparing similar properties in a similar market against each other, or comparing a property's asking price against comparable recent sales in the same submarket. It's a starting screening tool, not a complete investment decision on its own — pair it with cash-on-cash ROI, a realistic assessment of upcoming repairs, and your own risk tolerance before committing.