Real Estate Glossary
What is Vacancy Rate? Definition, Formula & Examples
Target keyword: "vacancy rate real estate" · 320 searches/mo
Definition
The vacancy rate is the percentage of time or units in a rental property that are unoccupied during a given period. For a single property, it represents the days per year the unit sits empty between tenants. For a portfolio or market, it represents the percentage of total units not currently occupied. Vacancy directly reduces effective gross income and is a key input in NOI calculations.
The Vacancy Rate Formula
Variables explained:
For a single unit over a year: if your property is empty for 18 days (tenant turnover), Vacancy Rate = 18/365 × 100 = 4.9%. For a portfolio: if 3 of your 20 units are vacant, Vacancy Rate = 3/20 × 100 = 15%. Dollar impact: Vacancy Loss = Annual Gross Rent × Vacancy Rate.
Vacancy Rate Example with Real Numbers
A single-family rental earns $2,400/month ($28,800/year). If you use a 7% vacancy assumption, Vacancy Loss = $28,800 × 0.07 = $2,016/year. Your effective gross income drops to $26,784. Using 5% instead of 7% saves $576/year in assumed loss — a difference that cascades through cap rate, DSCR, and cash-on-cash calculations.
Why Vacancy Rate Matters for Investors
Vacancy is one of the biggest levers on rental profitability. A property with 5% vacancy vs. 15% vacancy on the same gross rent has dramatically different NOI and cash flow. Underestimating vacancy is a common mistake that makes deals look better than they are. Markets, property class, and management quality all affect vacancy rate — research your local market before choosing an assumption.
Calculate Vacancy Rate for your property
Free — no signup required. Instant results.
Frequently Asked Questions
What vacancy rate should I use in my calculations?
Most investors use 5–8% as a baseline. In tight rental markets (low supply, high demand), 3–5% is realistic. In softer markets or for lower-grade properties, use 8–12%. Check your local market's published vacancy data when possible.
How do I reduce vacancy on my rental property?
Price competitively, maintain the property well, respond quickly to maintenance requests, screen for quality long-term tenants, offer lease renewal incentives, and begin marketing 60 days before a lease end.
Is vacancy different from credit loss?
Yes. Vacancy is income lost because the unit is empty. Credit loss (also called collection loss) is income lost because a tenant doesn't pay. In conservative underwriting, both are accounted for — sometimes combined as "vacancy and credit loss" at 5–10%.
How does market vacancy rate affect my property?
A market with 3% vacancy means strong demand — you can likely fill vacancies quickly and potentially raise rents. A market with 10%+ vacancy means competition for tenants is high, rents may be stagnant or falling, and your property may take longer to fill.
Related Terms
NOI Formula
The NOI formula calculates a property's annual net operating income by subtracting vacancy…
Cash Flow in Real Estate
Cash flow in real estate is the net money remaining after all property income has been col…
Operating Expense Ratio (OER)
The Operating Expense Ratio (OER) is the percentage of a property's gross operating income…
Gross Rent Multiplier (GRM)
The Gross Rent Multiplier (GRM) is a quick valuation metric that divides a property's purc…