Use this calculator to get an estimated cost for building your new home. Input your desired square footage, estimated costs per square foot, and other project-specific expenses to receive a comprehensive breakdown.
sq ft
$
$
$
Includes excavation, grading, basic slab/crawl space. Adjust for basements or difficult terrain.
% of construction cost
% of construction cost
$
% of total construction cost
Recommended for unexpected expenses.
.calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f9f9f9;
border: 1px solid #ddd;
border-radius: 8px;
padding: 25px;
max-width: 700px;
margin: 30px auto;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
color: #333;
}
.calculator-container h2 {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 1.8em;
}
.calculator-container p {
margin-bottom: 15px;
line-height: 1.6;
color: #555;
}
.calc-input-group {
display: flex;
flex-wrap: wrap;
align-items: center;
margin-bottom: 15px;
padding: 8px 0;
border-bottom: 1px dashed #eee;
}
.calc-input-group:last-of-type {
border-bottom: none;
}
.calc-input-group label {
flex: 1;
min-width: 200px;
font-weight: bold;
color: #34495e;
margin-right: 15px;
}
.calc-input-group input[type="number"] {
flex: 0 0 120px;
padding: 10px;
border: 1px solid #ccc;
border-radius: 5px;
font-size: 1em;
margin-right: 10px;
box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.07);
}
.calc-input-group span {
flex: 0 0 auto;
font-size: 0.9em;
color: #666;
}
.calc-input-group .input-help {
flex-basis: 100%;
font-size: 0.85em;
color: #777;
margin-top: 5px;
padding-left: 215px; /* Align with input field */
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #28a745;
color: white;
border: none;
border-radius: 5px;
font-size: 1.1em;
font-weight: bold;
cursor: pointer;
margin-top: 25px;
transition: background-color 0.3s ease, transform 0.2s ease;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.calculator-container button:hover {
background-color: #218838;
transform: translateY(-2px);
}
.calculator-result {
background-color: #e9f7ef;
border: 1px solid #d4edda;
border-radius: 8px;
padding: 20px;
margin-top: 30px;
font-size: 1.1em;
color: #155724;
line-height: 1.8;
}
.calculator-result h3 {
color: #28a745;
margin-top: 0;
margin-bottom: 15px;
font-size: 1.5em;
text-align: center;
}
.calculator-result p {
margin-bottom: 8px;
display: flex;
justify-content: space-between;
padding-bottom: 5px;
border-bottom: 1px dotted #c3e6cb;
}
.calculator-result p:last-of-type {
border-bottom: none;
font-weight: bold;
color: #0f5132;
font-size: 1.2em;
margin-top: 15px;
padding-top: 10px;
border-top: 2px solid #28a745;
}
.calculator-result span.label {
font-weight: normal;
color: #155724;
}
.calculator-result span.value {
font-weight: bold;
color: #0f5132;
}
@media (max-width: 600px) {
.calc-input-group label,
.calc-input-group input[type="number"],
.calc-input-group span {
flex-basis: 100%;
margin-right: 0;
margin-bottom: 5px;
}
.calc-input-group input[type="number"] {
width: calc(100% – 22px); /* Adjust for padding and border */
}
.calc-input-group .input-help {
padding-left: 0;
}
}
function calculateHomeBuildingCost() {
var totalSquareFootage = parseFloat(document.getElementById('totalSquareFootage').value);
var costPerSqFt = parseFloat(document.getElementById('costPerSqFt').value);
var lotPrice = parseFloat(document.getElementById('lotPrice').value);
var siteFoundationCost = parseFloat(document.getElementById('siteFoundationCost').value);
var architectFeesPercent = parseFloat(document.getElementById('architectFeesPercent').value);
var permitFeesPercent = parseFloat(document.getElementById('permitFeesPercent').value);
var landscapingDrivewayCost = parseFloat(document.getElementById('landscapingDrivewayCost').value);
var contingencyPercent = parseFloat(document.getElementById('contingencyPercent').value);
// Validate inputs
if (isNaN(totalSquareFootage) || totalSquareFootage <= 0) {
alert('Please enter a valid Total Square Footage.');
return;
}
if (isNaN(costPerSqFt) || costPerSqFt <= 0) {
alert('Please enter a valid Average Cost per Square Foot.');
return;
}
if (isNaN(lotPrice) || lotPrice < 0) {
alert('Please enter a valid Lot Purchase Price (or 0 if you own the lot).');
return;
}
if (isNaN(siteFoundationCost) || siteFoundationCost < 0) {
alert('Please enter a valid Site Work & Foundation Cost.');
return;
}
if (isNaN(architectFeesPercent) || architectFeesPercent < 0) {
alert('Please enter a valid Architectural & Design Fees percentage.');
return;
}
if (isNaN(permitFeesPercent) || permitFeesPercent < 0) {
alert('Please enter a valid Permit & Inspection Fees percentage.');
return;
}
if (isNaN(landscapingDrivewayCost) || landscapingDrivewayCost < 0) {
alert('Please enter a valid Landscaping & Driveway Cost.');
return;
}
if (isNaN(contingencyPercent) || contingencyPercent < 0) {
alert('Please enter a valid Contingency Fund percentage.');
return;
}
// Calculations
var baseStructureCost = totalSquareFootage * costPerSqFt;
var subtotalConstructionCost = baseStructureCost + siteFoundationCost;
var architectFeesAmount = subtotalConstructionCost * (architectFeesPercent / 100);
var permitFeesAmount = subtotalConstructionCost * (permitFeesPercent / 100);
var totalConstructionCostBeforeContingency = subtotalConstructionCost + architectFeesAmount + permitFeesAmount;
var contingencyFundAmount = totalConstructionCostBeforeContingency * (contingencyPercent / 100);
var grandTotalHomeBuildingCost = totalConstructionCostBeforeContingency + contingencyFundAmount + lotPrice + landscapingDrivewayCost;
// Display results
var resultDiv = document.getElementById('homeBuildingResult');
resultDiv.innerHTML = `
Estimated Home Building Costs
Base Structure Cost (${totalSquareFootage} sq ft @ $${costPerSqFt.toFixed(2)}/sq ft):$${baseStructureCost.toFixed(2)}Site Work & Foundation Cost:$${siteFoundationCost.toFixed(2)}Architectural & Design Fees (${architectFeesPercent}%):$${architectFeesAmount.toFixed(2)}Permit & Inspection Fees (${permitFeesPercent}%):$${permitFeesAmount.toFixed(2)}Landscaping & Driveway Cost:$${landscapingDrivewayCost.toFixed(2)}Contingency Fund (${contingencyPercent}%):$${contingencyFundAmount.toFixed(2)}Lot Purchase Price:$${lotPrice.toFixed(2)}Total Estimated Home Building Cost:$${grandTotalHomeBuildingCost.toFixed(2)}
`;
}
Understanding Your Home Building Costs
Building a new home is an exciting venture, but it comes with a significant financial commitment. Understanding the various components that contribute to the total cost is crucial for effective budgeting and planning. Our Home Building Cost Estimator helps you break down these expenses.
Key Factors Influencing Home Building Costs:
Total Square Footage: This is often the primary driver of cost. Larger homes naturally require more materials and labor.
Cost per Square Foot: This figure is highly variable and depends on several factors:
Location: Labor and material costs differ significantly by region and even within different areas of the same city.
Quality of Finishes: Basic, standard, or luxury finishes (e.g., flooring, countertops, cabinetry, fixtures) can drastically alter the per-square-foot cost.
Complexity of Design: Custom designs, intricate rooflines, numerous corners, and unique architectural features increase costs.
Materials: The type of framing, siding, roofing, and insulation chosen impacts the overall price.
Lot Purchase Price: If you don't already own land, the cost of the lot is a major component of your total project budget. Location, size, and topography all play a role.
Site Work & Foundation Cost: This includes expenses for excavation, grading, utility connections (water, sewer, electricity), and the foundation itself (slab, crawl space, or full basement). Difficult terrain or extensive tree removal can increase these costs.
Architectural & Design Fees: Professional architects and designers create the blueprints and ensure your home meets building codes and your aesthetic preferences. These fees are typically a percentage of the total construction cost.
Permit & Inspection Fees: Local governments require permits for construction to ensure safety and compliance. These fees cover the cost of reviewing plans and conducting inspections throughout the building process.
Landscaping & Driveway Cost: Don't forget the exterior! This includes driveways, walkways, patios, planting, and other outdoor features.
Contingency Fund: This is perhaps the most critical, yet often overlooked, part of a building budget. Unexpected issues (e.g., unforeseen site conditions, material price increases, design changes) are common. A contingency fund, typically 10-20% of the construction cost, provides a buffer against these surprises.
How to Use the Calculator:
Input your best estimates for each field. The "Average Cost per Square Foot" is a crucial input; research local builders and recent construction projects in your area to get a realistic figure. If you already own your lot, enter '0' for the Lot Purchase Price. The calculator will then provide a detailed breakdown of your estimated home building expenses.
Example Scenario:
Let's say you're planning to build a 2,500 sq ft home. You estimate an average cost of $200 per sq ft for a standard finish. You've found a lot for $90,000. Site work and foundation are estimated at $30,000. You budget 12% for architectural fees, 3% for permits, and $20,000 for landscaping/driveway. Finally, you wisely include a 15% contingency fund.
Base Structure Cost: 2,500 sq ft * $200/sq ft = $500,000
Subtotal Construction (Structure + Site): $500,000 + $30,000 = $530,000
Architectural Fees (12% of $530,000): $63,600
Permit Fees (3% of $530,000): $15,900
Total Construction (before contingency): $530,000 + $63,600 + $15,900 = $609,500
Contingency Fund (15% of $609,500): $91,425
Lot Purchase Price: $90,000
Landscaping & Driveway: $20,000
Total Estimated Home Building Cost: $609,500 + $91,425 + $90,000 + $20,000 = $820,925
This calculator provides an estimate and should be used as a starting point. Always consult with local builders, architects, and financial advisors for precise quotes and budgeting tailored to your specific project.