Vacancy Rate: The Silent Profit Killer in Real Estate Investing
December 18, 20242 min read

Vacancy Rate: The Silent Profit Killer in Real Estate Investing

RentalIntel Team
Real Estate Investment Experts

Vacancy is the #1 cash flow killer in real estate.
The Vacancy Rate tells you how often your property is empty—and losing money.


The Formula

Vacancy Rate=Vacant Units×100Total Rental Units\text{Vacancy Rate} = \frac{\text{Vacant Units} \times 100}{\text{Total Rental Units}}

For single-family homes, use:

Vacancy Rate=Vacant DaysTotal Days Available×100%\text{Vacancy Rate} = \frac{\text{Vacant Days}}{\text{Total Days Available}} \times 100\%

Where:

  • Vacant Units = Number of unoccupied rentals
  • Total Units = Number of total available units

Real-Life Example

Multi-Unit Property

CategoryAmount
Total Units10
Vacant Units2

Vacancy Rate Calculation

Vacancy Rate=210×100=20%\text{Vacancy Rate} = \frac{2}{10} \times 100 = 20\%

Single-Family Home Example

CategoryAmount
Days Vacant15
Total Days in Year365

Vacancy Rate Calculation

Vacancy Rate=15365×100=4.1%\text{Vacancy Rate} = \frac{15}{365} \times 100 = 4.1\%

What Does a 20% Vacancy Rate Mean?

  • High vacancy = Losing potential rental income.
  • Low vacancy = Strong market demand.
  • Most healthy rentals aim for under 5-8% vacancy.

When Vacancy Rate Matters (and When It Doesn’t)

Critical for rental investors
Helps predict long-term cash flow
Doesn’t apply to owner-occupied homes
STRs should use occupancy rate instead

Pro Tips

  • Reduce vacancy with longer leases (e.g., 12+ months).
  • Offer move-in incentives (discounted first month) in slow seasons.
  • Screen tenants well to avoid turnover & extended vacancies.

The Bottom Line

A high Vacancy Rate = money left on the table.
Keep it low by pricing competitively, retaining tenants, and marketing smartly.

What’s the average vacancy rate in your market? Let’s discuss!