Roofing Labor Cost Calculator

Labor typically runs $150–$300 per roofing square for asphalt shingles, which is 40–60% of the total bill. The rate tracks local wages, so it varies nearly 2× between the cheapest and most expensive states.

It is skilled, dangerous, physically brutal work with high liability and high insurance costs. Crews spend days on a hot roof, and the consequences of doing it badly show up as water damage years later.

Typically 40–60%. On repairs it is higher — often around 70% — because the fixed costs of mobilising a crew dominate a small job.

Hawaii, California, New York, Massachusetts and Washington DC sit at the top, at roughly $245–$265 per square. Mississippi, Arkansas and Alabama are lowest, at around $130–$150.

Yes, significantly. Above about 7/12 a roof requires harnesses and staging, which slows the crew and adds roughly 15% to labor. A 12/12 roof also has 41% more surface area than its footprint.

Yes — particularly off-season. The most effective lever is getting three written quotes that each state the square count and price per square, so contractors know they are being compared on a like-for-like basis.

In most states, no. Sales tax applies to materials but not to labor on a real-property improvement — though some states tax the whole contract. Check your local rules.

Almost no residential roofer quotes hourly, and you should be cautious of one that does. The industry prices per square precisely because it makes bids comparable and caps your exposure.