vacancy

How to Calculate Vacancy Rate for a Rental Property (2026)

How to Calculate Vacancy Rate for a Rental Property To calculate vacancy rate, divide the number of vacant units by the total units (or vacant days by total available days) and multiply by 100: vacancy rate = vacant units ÷ total units × 100. For a 10-unit building with 1 empty unit, that is 1 ÷ 10 × 100 = 10%. Run your own numbers with the Vacancy Rate Calculator(/finance/vacancy-rate-calculator), which also reports economic vacancy and annual income loss. I manage a 10-unit building, and in 2024 a single unit sat vacant for 60 days during a tenant turnover. At $1,500 a month, those two empty months cost me $3,000 in rent I never collected — money that no spreadsheet showed until I tracked vacancy as its own line item. That $3,000 gap on $180,000 of potential annual rent is a 1.7% economic vacancy hit from one unit, one time....