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Roof Replacement Cost Calculator
By Jessica Martinez
Enter your home's footprint, pitch, and material to get a ballpark roof replacement cost, tear-off and labor included.
Enter your home's footprint, pitch, and material to get a ballpark roof replacement cost, tear-off and labor included.
Planning figure only. Roofing bids vary by crew and season.
The exact multipliers and per-square-foot rates behind the numbers above:
| Pitch | Factor applied to footprint |
|---|---|
| Low pitch (shallow) | ×1.1 |
| Standard (moderate pitch) | ×1.25 |
| Steep pitch | ×1.5 |
| Material | Installed cost per sqft |
|---|---|
| 3-tab asphalt shingles | $4.50 |
| Architectural shingles | $6.00 |
| Metal roofing (standing seam) | $10.00 |
| Cedar shake | $18.00 |
Roof area equals footprint multiplied by pitch factor. Total cost equals roof area multiplied by the material rate, rounded to the nearest $100. The range shown runs 85 percent to 120 percent of that total.
Leave the defaults in place, an 1,800 square foot footprint, standard pitch, and architectural shingles, and the calculator first multiplies footprint by the pitch factor: 1,800 times 1.25 equals 2,250 square feet of actual roof area. That area is then priced at $6.00 per square foot for architectural shingles, for a subtotal of $13,500, rounded to the nearest $100. The typical range, $11,475 to $16,200, covers the tear-off complexity and regional labor swings that a single point estimate can't capture.
Material and pitch explain nearly all of the spread between an $8,000 roof and a $35,000 one. Switching from architectural shingles to standing seam metal on the same footprint adds roughly $4 per square foot to the number above, worth well over $10,000 on an average home. Pitch works the same way in reverse: a steep or multi-valley roofline costs more labor time and safety equipment than a simple gable roof needs, on top of the larger area a steep pitch already produces.
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Most full roof replacements on an average home run $11,000 to $16,000 with architectural shingles, based on this calculator's default 1,800 square foot footprint and standard pitch. Material choice and roof pitch are the two biggest variables.
Yes. The per-square-foot material rates already include a basic single-layer tear-off. A second layer of old shingles adds roughly $1 to $2 per square foot, and a full deck replacement adds more on top of that.
Pitch changes the actual roof area, not just the difficulty. The calculator multiplies your home's footprint by a pitch factor, 1.1 for a low pitch, 1.25 for standard, or 1.5 for a steep roof, so a steep roof can be 35 percent more roof area than a low-pitch one on the same footprint.
Three-tab asphalt shingles typically last 15 to 20 years, architectural shingles 25 to 30 years, standing seam metal 40 to 70 years, and cedar shake 30 to 40 years with regular maintenance.