function calculateVacancyRate() {
var totalUnitsInput = document.getElementById("totalUnits");
var occupiedUnitsInput = document.getElementById("occupiedUnits");
var resultDiv = document.getElementById("result");
var explanationDiv = document.getElementById("explanation");
var totalUnits = parseFloat(totalUnitsInput.value);
var occupiedUnits = parseFloat(occupiedUnitsInput.value);
if (isNaN(totalUnits) || isNaN(occupiedUnits) || totalUnits totalUnits) {
resultDiv.innerHTML = "Number of occupied units cannot be greater than the total number of units.";
explanationDiv.innerHTML = "";
return;
}
var vacantUnits = totalUnits – occupiedUnits;
var vacancyRate = (vacantUnits / totalUnits) * 100;
resultDiv.innerHTML = "Vacancy Rate:
" + vacancyRate.toFixed(2) + "%";
explanationDiv.innerHTML = `
What is Vacancy Rate?
The vacancy rate is a key performance indicator in real estate, particularly for rental properties. It measures the percentage of unoccupied units within a portfolio over a specific period. A lower vacancy rate generally indicates a healthier and more profitable property investment, while a higher rate can signal issues with pricing, property condition, or market demand.
How it's Calculated:
The formula for calculating the vacancy rate is:
Vacancy Rate = ((Total Units - Occupied Units) / Total Units) * 100
In this calculation:
- Total Units: Represents the total number of rentable units available in the property or portfolio.
- Occupied Units: Represents the number of units that are currently leased to tenants.
- Vacant Units: Calculated by subtracting the occupied units from the total units.
A vacancy rate of 0% means all units are occupied. A vacancy rate of 10% means 10% of the total units are vacant. For example, if you have ${totalUnits} total units and ${occupiedUnits} are occupied, you have ${vacantUnits} vacant units, resulting in a vacancy rate of ${vacancyRate.toFixed(2)}%. This metric helps property managers and investors identify trends, assess market competitiveness, and make informed decisions about pricing and property management strategies.
`;
}
.calculator-container {
font-family: Arial, sans-serif;
max-width: 600px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
background-color: #fff;
}
.calculator-inputs h2, .calculator-results h3 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.input-group {
margin-bottom: 15px;
display: flex;
align-items: center;
gap: 10px;
}
.input-group label {
flex-basis: 150px;
font-weight: bold;
color: #555;
}
.input-group input[type="number"] {
flex-grow: 1;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1rem;
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 1.1rem;
cursor: pointer;
transition: background-color 0.3s ease;
margin-top: 20px;
}
.calculator-container button:hover {
background-color: #0056b3;
}
.calculator-results {
margin-top: 30px;
border-top: 1px solid #eee;
padding-top: 20px;
}
#result {
font-size: 1.4rem;
font-weight: bold;
color: #28a745;
text-align: center;
margin-bottom: 20px;
}
#explanation p, #explanation ul, #explanation li {
line-height: 1.6;
color: #444;
margin-bottom: 10px;
}
#explanation h3 {
margin-top: 15px;
margin-bottom: 10px;
color: #007bff;
}
#explanation code {
background-color: #e9ecef;
padding: 2px 5px;
border-radius: 3px;
font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
}