Average Roof Replacement Cost Guide

Replacing your roof is a massive undertaking. Understanding how contractors bid the project can help you negotiate effectively and avoid being overcharged.

The Economics of a Roofing Quote

Roofing contractors price jobs by the "Square" (an industry term representing a 100 square foot area). The national average for an architectural shingle replacement is between $4.50 and $7.00 per square foot, or $450 to $700 per Square.

Factors That Spike the Price

1. Roof Pitch (Steepness): A steep roof (e.g., a 10/12 pitch) is not walkable. It requires roof jacks, harnesses, and considerably more labor time, increasing the labor cost by 20-40%.
2. Tear-Offs: If your home has multiple layers of old shingles, the labor to remove and dispose of the excess weight adds heavily to the bill.
3. Plywood Decking: If your roof has suffered water damage, replacing the underlying OSB or plywood structural decking will add $60-$80 per sheet.

Material Upgrades

While 3-tab asphalt shingles are the cheapest, they are largely obsolete. Architectural shingles are the standard, offering better wind resistance and aesthetics for a modest 15% price increase.