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How Do I Estimate Roofing Costs

November 30, 2025

2 min read

To estimate roofing costs, you need to know your roof size, the material you want, and your location. Most roof replacement costs fall between $5,868 and $13,217, but the price depends on many things. Understanding these costs helps you budget and get fair quotes from roofers. Let’s break down how to estimate your roofing project.

What Is Your Roof Size?

Your roof size is the biggest factor in cost. Roofs are measured in squares, which equals 100 square feet. According to the National Association of Home Builders, the average U.S. roof size is 2,647 square feet or 26.47 squares.

You can measure your roof by looking at your home’s square footage and adding 10 to 15 percent for the slope. Then divide by 100 to get squares. A roofer can also measure it for you.

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Which Roofing Material Costs the Most?

Different materials have very different prices. According to RubyHome, roof installation costs range from $4 to $40 per square foot. For a 1,700 square foot roof, that’s $6,800 to $68,000.

Here are common materials and their costs:

Material TypeCost per Sq. Ft.Lifespan
Basic Asphalt Shingles$4.25-$4.9520 years
Architectural Asphalt$4.50-$8.2530 years
Metal Roofing$10.00-$17.0540-80 years
Clay Tiles$12.00-$24.75100+ years

What Does Labor Cost?

Labor is a big part of your roof cost. According to the U.S. Bureau of Labor Statistics, roofers earn a median hourly wage of $24.05 per hour. The total installation work can take days or weeks depending on your roof size and material.

Most roofers charge between $4 and $40 per square foot, which includes both labor and materials. Don’t choose a roofer just because they’re cheap. Poor work costs more to fix later.

How Much Will Your Roof Really Cost?

According to RubyHome, the average roof replacement costs $9,526. But it can range from $5,868 to $13,217. In some cases with premium materials, costs go up to $80,000.

To estimate your cost, multiply your roof squares by the cost per square for your chosen material. Add 10 to 15 percent for waste and trim work. Get at least three quotes from local roofers. They should inspect your roof in person before giving you a price. According to industry data, 85% of U.S. roofing industry revenue comes from replacement of existing roofs, so roofers know this business well.

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Contact a qualified roof contractor for expert guidance on roof repair, replacement, or installation.