Simple (Gable, no valleys)
Moderate (Multiple valleys/dormers)
Complex (High detail, many angles)
Yes (Full Removal)
No (Layer Over)
National Average
High Cost (Major City/Coastal)
Low Cost (Rural/Midwest)
Estimated Investment Range
Based on your inputs, the estimated cost for your roofing project is:
$0.00
*Includes estimated labor, materials, and disposal fees. Range:
How to Estimate Your Roof Replacement Cost
Replacing a roof is one of the most significant investments a homeowner will make. Understanding the factors that drive these costs is essential for budgeting. This calculator uses professional contractor formulas to provide a realistic estimate of what you might pay for a full replacement.
Key Factors Influencing Your Estimate
Square Footage: Roofing is measured in "squares" (100 square feet). The more surface area, the more materials and labor hours required.
Material Choice: This is the biggest variable. Asphalt shingles are the most affordable, while slate and tile offer premium durability at a much higher price point.
Pitch and Slope: Steep roofs are more dangerous and difficult to work on, requiring specialized safety equipment and more time, which increases labor costs.
Tear-off Costs: Removing existing layers of shingles adds to the labor and disposal fees. If your local building code allows a second layer, you might save money upfront, but it can decrease the lifespan of the new roof.
Real-World Roofing Examples
To put these numbers in perspective, here are three common scenarios:
The Standard Suburban Home: A 2,000 sq. ft. roof with asphalt shingles and a moderate pitch usually ranges between $9,000 and $13,000.
The Modern Metal Roof: Upgrading to a standing seam metal roof for a 2,000 sq. ft. area can cost between $18,000 and $28,000 depending on the gauge of the metal.
The High-End Tile Roof: For luxury properties using clay tiles, a 3,000 sq. ft. roof can easily exceed $50,000 due to material weight and specialty labor.
Hidden Costs to Consider
While our calculator provides a solid baseline, professional inspections may reveal underlying issues like rotted decking (the wood beneath the shingles), damaged flashing around chimneys, or inadequate attic ventilation. We recommend adding a 10% contingency fund to your budget for these unforeseen repairs.
function calculateRoofCost() {
var area = parseFloat(document.getElementById("roofArea").value);
var materialPrice = parseFloat(document.getElementById("materialType").value);
var pitchMult = parseFloat(document.getElementById("roofPitch").value);
var complexMult = parseFloat(document.getElementById("complexity").value);
var tearOffCost = parseFloat(document.getElementById("tearOff").value);
var locationMult = parseFloat(document.getElementById("locationFactor").value);
if (isNaN(area) || area <= 0) {
alert("Please enter a valid roof area.");
return;
}
// Base Calculation
// (Material Price + Tear-off per sq ft) * Area * Pitch * Complexity * Location
var baseRate = materialPrice + tearOffCost;
var total = baseRate * area * pitchMult * complexMult * locationMult;
// Formatted Results
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
minimumFractionDigits: 0,
maximumFractionDigits: 0
});
var lowEnd = total * 0.9;
var highEnd = total * 1.1;
document.getElementById("totalEstimate").innerText = formatter.format(total);
document.getElementById("priceRange").innerText = formatter.format(lowEnd) + " – " + formatter.format(highEnd);
var resultDiv = document.getElementById("roofResult");
resultDiv.style.display = "block";
resultDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}