Roof Replacement Cost Calculator
Estimate the cost to replace your roof by roof size, material, pitch, and whether the old roof is torn off. Get a materials and labor breakdown in seconds.
Project Details
Roof area ≈ home footprint × 1.3–1.5 for a typical pitch. A 2,000 sq ft single-story home has roughly 2,000–2,600 sq ft of roof.
Steeper roofs are slower and require fall-protection equipment, which raises labor cost.
Tear-off is recommended; most codes allow a maximum of two roofing layers.
Estimated Cost
Low
$8,357
Average
$12,220
High
$18,544
Cost Breakdown
Materials
| Item | Qty | Low | Mid | High |
|---|---|---|---|---|
| Architectural Asphalt Shingles | 1700 sq ft | $2,550 | $3,740 | $5,440 |
| Underlayment, Flashing & Drip Edge | 1700 sq ft | $680 | $1,190 | $2,040 |
| Subtotal | $3,230 | $4,930 | $7,480 |
Labor & Fees
| Item | Qty | Low | Mid | High |
|---|---|---|---|---|
| Installation Labor | 1700 sq ft | $3,427 | $4,570 | $6,474 |
| Tear-Off & Disposal | 1700 sq ft | $1,360 | $2,040 | $3,230 |
| Permits & Dumpster | 1700 sq ft | $340 | $680 | $1,360 |
| Subtotal | $5,127 | $7,290 | $11,064 |
Notes
- • Based on 1,700 sq ft of architectural asphalt shingles — about $7.19/sq ft installed at the average tier.
- • Includes tear-off of the existing roof. Most building codes allow a maximum of two roofing layers.
- • Pitch within the standard walkable-to-moderate range.
- • Estimate excludes deck/sheathing replacement (common $1–$3/sq ft surprise if rot is found) and structural repairs.
About the Roof Replacement Calculator
Replacing a roof is one of the largest home-maintenance projects most owners face, and the price swings widely with roof size, material, and how complex the roof is to work on. This calculator estimates your total by combining the roofing material, underlayment and flashing, installation labor (adjusted for pitch and home height), tear-off of the old roof, and permits — so you get a realistic low, average, and high range before you call contractors.
How We Calculate Roof Replacement Cost
We start from your roof area in square feet and apply a per-square-foot material cost for the roofing type you choose, plus underlayment, flashing, and drip edge. Installation labor is a per-square-foot rate for that material, multiplied by a pitch factor (steeper roofs cost more) and a height factor (second and third stories add access cost). Tear-off and disposal are added per square foot when selected, followed by permits and dumpster fees. The result is split into materials and labor with low/average/high tiers.
Factors That Affect Roof Replacement Cost
The biggest cost drivers are roof size and material — slate or metal can cost three to six times more per square foot than asphalt. After that come pitch and number of stories (both raise labor), tear-off vs. overlay, the number of penetrations and valleys (skylights, chimneys, dormers), and hidden deck rot discovered after tear-off. Regional labor rates matter too — use the Location selector to adjust for your state.
Roofing Material Comparison
Approximate installed cost and lifespan by material. Costs include materials and labor at typical pitch; premium or complex roofs run higher.
| Material | Installed cost / sq ft | Typical lifespan | Notes |
|---|---|---|---|
| 3-Tab Asphalt | $3.50 – $5.50 | 15–25 yrs | Lowest upfront cost |
| Architectural Asphalt | $4.50 – $8.00 | 20–30 yrs | Best value, most common |
| Metal Panels | $8 – $20 | 40–70 yrs | Durable, energy-efficient |
| Cedar Shake | $8 – $14 | 20–30 yrs | Natural look, more upkeep |
| Tile (Clay/Concrete) | $10 – $18 | 50+ yrs | Heavy; may need framing check |
| Slate | $15 – $35+ | 75–100+ yrs | Premium, longest-lasting |
Source: Industry installed-cost ranges, 2026; vary by region and roof complexity.
Tear-off vs. overlay: which should you choose?
An overlay (laying new shingles over the old ones) is tempting because it skips the messiest, most labor-intensive step. On an average roof that saves roughly $1,500–$3,000.
The catch: the new shingles inherit whatever is underneath. Any rotted decking stays hidden, the extra layer traps heat and shortens shingle life, and the added weight isn't ideal for older framing. Building codes also cap most homes at two total layers, so an overlay just defers a full tear-off to next time. For a roof you want to last its full rated lifespan — and to keep manufacturer warranties intact — a complete tear-off is the safer choice.
When to repair vs. replace
If less than about a quarter of the roof is damaged and the roof still has years of rated life left, a targeted repair is usually the smart spend. Once damage is widespread, leaks are recurring, or the roof is past roughly 80% of its expected lifespan, repeated repairs stop paying off and full replacement is more economical.
Get the roof inspected after any major storm — and before listing your home. A documented new roof removes a major buyer objection and smooths the inspection, even though it typically recoups only part of its cost at resale.
Roof Replacement by Roof Area
| Roof Area | Low | Average | High |
|---|---|---|---|
| 850 sq ft | $4,179 | $6,110 | $9,272 |
| 1,300 sq ft | $6,391 | $9,344 | $14,180 |
| 1,700 sq ft | $8,357 | $12,220 | $18,544 |
| 2,550 sq ft | $12,536 | $18,329 | $27,815 |
| 3,400 sq ft | $16,714 | $24,439 | $37,087 |
| 5,100 sq ft | $25,072 | $36,659 | $55,631 |
National average at typical settings — use the calculator above for your exact inputs and location.
Planning a larger project? You may also want to estimate costs for soffit installation cost, siding replacement cost, or gambrel roof cost.
Sources
- • HomeAdvisor — 2026 Roof Replacement Cost Guide
- • Fixr.com — Roof Replacement Cost
- • Angi — Cost to Replace a Roof
- • National Roofing Contractors Association (NRCA) — material service-life guidance
Costs are based on current industry ranges and vary by location and market conditions. See how we calculate costs — cost data last reviewed June 2026.