Vacancy Rate
The vacancy rate is the percentage of all available rental units or leasable square footage in a property or market that are unoccupied and available for rent at a given point in time, serving as a fundamental measure of supply-demand balance in residential and commercial real estate markets.
Vacancy rate is one of the most closely watched metrics in real estate investment and analysis because it directly drives rental income and, by extension, property values. A property with a 5% vacancy rate is generating revenue from 95% of its leasable space; one with a 20% vacancy rate is generating revenue from only 80%. At the market level, aggregate vacancy rates signal whether conditions favor landlords or tenants and whether rents are likely to rise or fall.
In residential real estate, vacancy rate is measured by the U.S. Census Bureau through the Housing Vacancy Survey (HVS), which provides quarterly estimates of rental vacancy rates and homeowner vacancy rates nationally and by metropolitan area. The U.S. rental vacancy rate has historically ranged from approximately 5% to 10%, with low vacancy environments — below 5% — generally associated with rising rents and tight housing supply.
In commercial real estate, vacancy is tracked separately by property sector: office, retail, industrial, multifamily, and hotel. Each sector has its own natural vacancy range reflecting structural factors such as lease-up time for new buildings, tenant turnover, and seasonal demand patterns. Industrial vacancy rates have historically run lower than office vacancy, reflecting stronger and more consistent demand from logistics and manufacturing tenants relative to office tenants, who often require longer negotiation and buildout periods before occupying space.
For real estate investors and analysts, the vacancy rate at both the property and market level informs underwriting assumptions for rent growth, lease-up timelines, and capital expenditures. A property with above-market vacancy may represent a value-add opportunity if vacancy is driven by below-market rents, deferred maintenance, or weak management rather than structural demand problems. Conversely, below-market vacancy may be unsustainable and mean-revert toward market norms as leases expire.
Vacancy directly feeds into a property's effective gross income calculation: gross potential rent minus vacancy and credit loss equals effective gross income. Even small changes in vacancy assumptions can materially affect discounted cash flow valuations, making conservative vacancy underwriting a key discipline in real estate investment analysis.