What is Vacancy Rate?
The vacancy rate is a key metric for landlords and property managers that represents the percentage of unoccupied rental units within a given period. A high vacancy rate can significantly impact your rental income and profitability.
How to Calculate Vacancy Rate:
The formula used in this calculator is:
Vacancy Rate = (Number of Vacant Units * Average Days Each Unit Was Empty / Total Number of Units) / Time Period (in days) * 100
A lower vacancy rate generally indicates a healthy rental market and efficient property management. Conversely, a high vacancy rate might signal issues such as uncompetitive pricing, poor property condition, ineffective marketing, or a weaker local rental market.
Example:
Let's say you have 10 rental units (Total Units). In a 30-day period (Time Period), you had 1 unit vacant on average, and that unit was empty for 15 days (Average Days Each Unit Was Empty). Using the formula:
Vacancy Rate = (1 * 15 / 10) / 30 * 100
Vacancy Rate = (1.5 / 30) * 100
Vacancy Rate = 0.05 * 100
Vacancy Rate = 5%
This means that, on average, 5% of your total rental unit capacity was vacant during that 30-day period.
function calculateVacancyRate() {
var totalUnits = parseFloat(document.getElementById("totalUnits").value);
var vacantUnits = parseFloat(document.getElementById("vacantUnits").value);
var timePeriodDays = parseFloat(document.getElementById("timePeriodDays").value);
var averageDaysPerVacancy = parseFloat(document.getElementById("averageDaysPerVacancy").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(totalUnits) || totalUnits <= 0) {
resultDiv.innerHTML = "Please enter a valid number for Total Units (greater than 0).";
return;
}
if (isNaN(vacantUnits) || vacantUnits < 0) {
resultDiv.innerHTML = "Please enter a valid number for Vacant Units (0 or more).";
return;
}
if (isNaN(timePeriodDays) || timePeriodDays <= 0) {
resultDiv.innerHTML = "Please enter a valid number for Time Period (in days, greater than 0).";
return;
}
if (isNaN(averageDaysPerVacancy) || averageDaysPerVacancy totalUnits) {
resultDiv.innerHTML = "Number of Vacant Units cannot be greater than Total Units.";
return;
}
if (averageDaysPerVacancy > timePeriodDays) {
resultDiv.innerHTML = "Average Days Each Unit Was Empty cannot be greater than the Time Period.";
return;
}
var totalPotentialUnitDays = totalUnits * timePeriodDays;
var totalVacancyDays = vacantUnits * averageDaysPerVacancy;
var vacancyRate = (totalVacancyDays / totalPotentialUnitDays) * 100;
resultDiv.innerHTML = "The average vacancy rate is:
" + vacancyRate.toFixed(2) + "%";
}
.vacancy-calculator-wrapper {
font-family: sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.vacancy-calculator-wrapper h2, .vacancy-calculator-wrapper h3 {
color: #333;
margin-bottom: 15px;
}
.calculator-inputs, .calculator-results, .calculator-explanation {
margin-bottom: 25px;
padding: 15px;
border: 1px solid #eee;
border-radius: 5px;
background-color: #f9f9f9;
}
.calculator-inputs .form-group {
margin-bottom: 15px;
}
.calculator-inputs label {
display: block;
margin-bottom: 5px;
font-weight: bold;
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}
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background-color: #007bff;
color: white;
padding: 10px 20px;
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border-radius: 5px;
cursor: pointer;
font-size: 16px;
transition: background-color 0.3s ease;
}
.calculator-inputs button:hover {
background-color: #0056b3;
}
.calculator-results #result {
font-size: 1.2em;
color: #28a745;
font-weight: bold;
}
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}
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}