Roof Replacement Cost Calculator
Estimate what a roof replacement will cost. Compare asphalt shingle, metal, and tile by roof size, pitch, and tear-off, and see a realistic low-to-high installed price range.
Get a realistic installed-cost range for a roof replacement before you call contractors. Pick the material, enter your roof area, and set the pitch and tear-off — the estimate updates as you go.
Roofing material
By far the biggest cost driver. Asphalt shingles are the most common and affordable; metal and tile cost more but last much longer.
Roof area
The total roof surface area in square feet — not your home's floor area. Roof area is larger because of the slope and overhangs. A typical 2,000 sq ft single-story home often has 2,200–2,800 sq ft of roof.
Pitch & complexity
Steeper, more cut-up roofs (many valleys, dormers, hips) cost more to stage and work on safely.
Tear-off of old roof
Removing and disposing of the existing roof. More existing layers means more labor and dumpster cost.
Estimated Installed Cost
$12k–$19k
for a 2000 sq ft architectural asphalt roof (20 squares)
A typical re-roof range
This is a common range for a full residential re-roof. The biggest swing factors are roof complexity, the number of layers being removed, and any deck repairs found once the old roof is off. Comparing two or three itemized bids is the best way to land toward the lower end.
Estimates use 2026 national contractor averages and will vary with your region, roof complexity, accessibility, and what's found once the old roof is removed. They cover material, labor, underlayment, flashing, and standard tear-off, but not deck/sheathing repairs, structural reinforcement, gutters, skylights, or permit fees, which differ widely by area. Always confirm scope on written bids.
💡About this calculator▼
Replacing a roof is one of the larger exterior projects a homeowner faces, and the price swings enormously — a simple asphalt re-roof on a small ranch and a steep tile roof on a big two-story aren't remotely the same number. This calculator gives you a realistic installed-cost range tailored to the roof you actually have, before you start collecting bids.
Pick your material — 3-tab or architectural asphalt shingle, metal, or tile — enter your roof area, and set the pitch and how many old layers need to come off. The tool prices the job by the "square" (roofers measure in 100-square-foot units), applies a complexity factor for steeper or more cut-up roofs, and adds tear-off and disposal to produce a low-to-high installed estimate.
The range is wide on purpose: real roofing quotes vary 30 to 50 percent by region, roof complexity, and contractor. The goal isn't a to-the-penny quote — it's a grounded number to budget around, to sanity-check the bids you receive, and to see how much each choice (material, pitch, tear-off) actually moves the total.
Roofing is priced per "square" — one square equals 100 square feet of roof area. The tool converts your roof area into squares, multiplies by the installed cost per square for your material, adjusts for pitch and complexity, then adds tear-off and disposal.
Your material sets the per-square cost and is the single biggest factor. 3-tab asphalt is the most affordable shingle; architectural (also called dimensional or laminate) asphalt is thicker, more popular, and a bit more; metal and tile are premium materials that cost several times as much per square but last decades longer.
Pitch and complexity apply as a multiplier on the material and labor. A low, walkable roof with a simple shape is the baseline. A steeper or more cut-up roof — lots of valleys, hips, dormers, and penetrations — takes more time, staging, and safety equipment, so it costs more per square to install.
Tear-off is added on top, per square, based on how many existing roof layers must be removed and hauled away. None (a new deck or open framing) adds nothing; one layer adds a modest amount; two or more layers adds more, because there's more to strip and dispose of. The result is a low-to-high total, plus a midpoint you can plan around. The exact formula and a worked example are below.
📐How it's calculated▼
The estimate converts area to squares, prices material and labor with a pitch multiplier, then adds tear-off — for both a low and a high figure.
Step 1 — Convert area to squares: Squares = Roof area ÷ 100
Step 2 — Material & labor (with pitch multiplier): Material cost (low) = Squares × Per-square rate (low) × Pitch multiplier Material cost (high) = Squares × Per-square rate (high) × Pitch multiplier
Each material has its own per-square range. The pitch multiplier is roughly 1.0 for a low/simple roof, about 1.1 for medium, and about 1.25 for steep or complex.
Step 3 — Tear-off & disposal: Tear-off = Squares × Per-square tear-off rate (0 for none, more for additional layers)
Step 4 — Total range: Total (low) = Material cost (low) + Tear-off Total (high) = Material cost (high) + Tear-off
Example: A 2,000 sq ft architectural-asphalt roof, medium pitch, one layer to tear off
→ Squares: 2,000 ÷ 100 = 20 squares
→ Material & labor: 20 × $450–$750 × 1.1 = $9,900–$16,500
→ Tear-off: 20 × $100 = $2,000
→ Total: $11,900–$18,500, with a midpoint around $15,200
That spread is normal for roofing — which is exactly why getting several itemized bids matters.
📎Source: U.S. Department of Energy — Energy Saver: Roofs
🔍Finding your inputs▼
Roofing material: The single most important choice for cost. 3-tab asphalt is the thin, flat, lowest-cost shingle, with a typical life around 15–20 years. Architectural (dimensional) asphalt is thicker and more durable, the most popular choice today, lasting roughly 25–30 years. Metal — usually standing-seam panels — costs more up front but lasts 40–70 years and sheds snow and water well. Tile (clay or concrete) is the premium option, lasting 50+ years, but it's heavy and may require structural reinforcement.
Roof area: The total surface area of the roof in square feet — not your home's floor area. A roof is always larger than the footprint underneath it because it's sloped and has overhangs. As a rough guide, a single-story home with about 2,000 sq ft of living space often has 2,200–2,800 sq ft of roof; steeper roofs add more. If you don't know it, you can estimate from your footprint and slope, or just enter a reasonable figure — this drives the size portion of the estimate, so close is fine for budgeting.
Pitch & complexity: How steep and cut-up the roof is. Choose low/walkable for a gentle slope and a simple rectangular shape; medium for a standard slope and layout; steep/complex for a roof that's hard to walk or has lots of valleys, hips, dormers, and penetrations. Steeper, busier roofs cost more because they take more time, staging, and safety gear.
Tear-off of old roof: Whether the existing roof has to be removed first. Choose none if you're roofing a new deck or open framing; one layer if there's a single existing roof to strip; two or more layers if previous owners shingled over an old roof (common, and worth removing rather than adding a third layer). More layers means more labor and disposal cost.
⚠️Special situations▼
I only know my home's floor area, not the roof area
Roof area is always larger than the floor area beneath it, because the roof is sloped and overhangs the walls. A quick estimate: take your footprint (one floor's area) and multiply by a slope factor — about 1.1 for a low roof, 1.25 for a medium roof, and 1.4 or more for a steep one — then add a little for overhangs. For a two-story home, use the footprint, not the combined floor area. When in doubt, round up slightly; underestimating area is the most common way these budgets come in low.
I'm deciding between asphalt and metal or tile
Switch the material and watch the estimate change — that's the comparison this tool is built for. Metal and tile cost several times more up front but can last two to three times as long as asphalt, so the cost per year of life is often closer than the sticker price suggests. Weigh how long you'll own the home, your climate (metal sheds snow, tile suits hot dry regions), and weight: tile is heavy and may require an engineer's sign-off and framing reinforcement that this estimate doesn't include.
There are already two layers of shingles up there
Most codes allow at most two layers of asphalt shingles, so if you already have two, a third isn't an option — everything has to come off. Set tear-off to '2+ layers' to capture the extra removal and disposal cost. Stripping to the deck is also the right call even when a layover is legal: it lets the crew inspect and repair the decking, install fresh underlayment, and gives you the full rated lifespan of the new roof.
The contractor found rotten decking after tear-off
This is the most common mid-project surprise. You can't always see deck rot until the old roof is off, so it's usually handled as a per-sheet add-on rather than included in the base bid. Ask each contractor up front what they charge per sheet of replacement decking and to give you a not-to-exceed estimate. Budgeting a contingency of several hundred to a couple thousand dollars on top of this estimate is wise, especially on older homes.
I have solar panels on my roof
Solar adds a real cost this estimate doesn't include. The panels must be removed before the roofers can work and reinstalled afterward — a job called a 'detach and reset' that typically runs about $1,500 to $5,000 or more depending on system size and racking. Most roofers won't touch the electrical side, so your solar installer (or an approved subcontractor) usually handles it, on a separate invoice and schedule. Check your solar warranty first, since unauthorized work can void it. The upside: re-roofing while the panels are off is the ideal time to do it, because the deck under the array is the hardest spot to ever access again — make sure all flashing and mount penetrations are redone properly while it's exposed. Add the detach-and-reset figure on top of the estimate here, and get it quoted specifically.
A contractor's quote is far below this range
A bid well under the estimate isn't automatically a bargain — find out why before you sign. Confirm it includes tear-off and disposal, new underlayment, drip edge, flashing around penetrations, and ridge venting, and that it's quoting the same material grade you expect. Unusually low bids sometimes skip these essentials or assume a layover instead of a tear-off, and the difference reappears later as failures or change orders. Compare scope line by line against other bids, not just the bottom-line number.
❓Common questions▼
How much does it cost to replace a roof?
It depends mostly on material and size. A typical asphalt-shingle re-roof on an average home often runs from around eight thousand to the low twenty-thousands, while metal and tile roofs can run two to four times that. Roof area, pitch and complexity, and how many old layers must be torn off all move the number. Enter your specifics above for a range tailored to your roof.
Which roofing material is cheapest?
3-tab asphalt shingle is the cheapest to install, followed by architectural (dimensional) asphalt, which costs a bit more but lasts longer and looks better — it's the most popular choice for that reason. Metal and tile cost significantly more up front. But the cheapest to install isn't always the best value: a longer-lasting material can cost less per year of life, so weigh how long you plan to keep the home.
What is a "square" in roofing?
A square is the roofing industry's unit of area: one square equals 100 square feet of roof surface. Contractors price and order materials by the square, so a 2,000-square-foot roof is 20 squares. This calculator works in squares behind the scenes, which is why the per-unit costs line up with how roofers actually quote.
Do I need to tear off the old roof, or can I roof over it?
Sometimes you can add a second layer of asphalt over an existing single layer, which saves on tear-off — but it's usually not the better choice. A layover hides any decking damage, adds weight, traps heat that can shorten shingle life, and often comes with a reduced warranty. Most codes cap you at two total layers. Tearing off lets the crew inspect and repair the deck and gives you the full rated lifespan, which is why most roofers recommend it.
Why is the estimate such a wide range?
Because roofing prices genuinely vary that much. The same roof can cost 30 to 50 percent more or less depending on your region's labor rates, the roof's complexity and accessibility, the material grade, and the contractor. A single number would imply a precision that doesn't exist before someone walks your roof. The low-to-high range reflects what a fair installed cost should fall within, which is more useful for budgeting than a false exact figure.
How much does it cost to replace a roof with solar panels?
Solar adds to the job because the panels have to be removed before roofing and reinstalled afterward — a 'detach and reset.' That typically costs about $1,500 to $5,000 or more on top of the roofing itself, depending on how many panels you have and the racking system, and it's usually billed separately by your solar installer rather than the roofer. Use this calculator for the roofing cost, then add the detach-and-reset figure. Re-roofing while the panels are off is actually the best time to do it, since the deck beneath the array is otherwise nearly impossible to access — just confirm the warranty implications with your solar company before scheduling.