Vacancy is one of the biggest silent profit killers in rental property ownership. A unit sitting empty for even one extra month doesn't just cost that month's rent — it compounds with turnover costs, advertising spend, and lost momentum toward your annual return.
Calculating Vacancy Rate
For a portfolio, calculate it across all units: total vacant unit-days divided by total available unit-days across the whole portfolio and period. This lets you compare vacancy performance across properties and over time.
Calculating the Real Cost of Vacancy
Vacancy cost is more than lost rent — it includes turnover expenses that occur regardless of how quickly you refill the unit.
What's a Normal Vacancy Rate?
National average residential vacancy rates typically run in the 5–8% range, though this varies significantly by market. Tight urban rental markets can run below 3%, while oversupplied markets or seasonal areas can run well above 10%. Compare your vacancy rate to local market averages, not national ones.
How to Reduce Vacancy
- Start marketing before move-out: List the unit 30–45 days before the current tenant vacates whenever possible.
- Price at market, not above it: Overpricing a unit by even 5% can add weeks to your vacancy — the lost rent from being overpriced usually exceeds the gain from a slightly higher rent.
- Streamline turnover: Have a standard punch-list and a reliable cleaning/painting crew ready so turnover takes days, not weeks.
- Screen for retention, not just approval: Tenants who fit the property and neighborhood well are more likely to renew, reducing future vacancy.
- Offer lease renewal incentives: A modest gesture (minor upgrade, slightly delayed rent increase) is often cheaper than a full turnover cycle.
Key insight: Reducing average vacancy from 21 days to 10 days per turnover across a portfolio can meaningfully improve annual returns — often more than a comparable increase in monthly rent, because it eliminates a recurring cost rather than adding marginal revenue.