Roof Cost for a 4,000 sq ft House (2026 Prices)

Roof cost for a 4,000 sq ft house

Worked out for a 4,000 sq ft large two-storey home with a 9/12 cut-up (valleys, dormers) roof, with tables for other pitches, storeys and materials.

4,000 sq ft · large two-storey home · 9/12

$14,500 – $26,000

2,854 sq ft of roof, 34.2 squares to order (20% waste) · installed, incl. tear-off of one layer and a permit

Change the numbers in the roof cost calculator

The working

1. Floor plan4,000 sq ft ÷ 2 storeys = 2,000 sq ft per floor = 36.5 ft × 54.8 ft2,000 sq ft
2. Add overhangs(36.5 ft + 3) × (54.8 ft + 3), for 1.5 ft eaves on every side2,283 sq ft footprint
3. Roof surface2,283 sq ft footprint × 1.250 (9/12 pitch multiplier)2,854 sq ft
4. Squares to order2,854 ÷ 100 = 28.5 squares, + 20% waste (cut-up (valleys, dormers) roof)34.2 squares
5. Installed2,854 sq ft × $4–$6 per sq ft (architectural asphalt shingles, HomeGuide, Nov 7, 2025)$11,414 – $17,121
6. Tear-off2,854 sq ft × $1–$3 per sq ft to remove one layer (HomeGuide)$2,854 – $8,561
7. PermitFlat fee, set locally (HomeGuide, Fixr)$100 – $500
8. Installed totalSum, rounded to $100 under $10,000 and $500 above$14,500 – $26,000

Prices are published national installed ranges (mostly HomeGuide, updated Nov 7, 2025), the same ones the roof cost calculator uses, for a straightforward re-roof with one old layer torn off. They are not adjusted for your state; the calculator can do that. Decking repairs, access, steep or cut-up roofs and the contractor all move the final price, so get at least two written quotes.

Squares and the materials list come from the same math as the roof calculator, which works them out for your own measurements.

This 4,000 sq ft house at other pitches

Pitch	Roof surface	Squares	Asphalt shingles	Standing-seam metal
3/12	2,353 sq ft	23.5	$12,000 – $21,500	$23,500 – $45,000
4/12	2,406 sq ft	24.1	$12,000 – $22,000	$24,000 – $46,000
6/12	2,552 sq ft	25.5	$13,000 – $23,500	$25,500 – $49,000
8/12	2,744 sq ft	27.4	$14,000 – $25,000	$27,500 – $52,500
10/12	2,972 sq ft	29.7	$15,000 – $27,000	$30,000 – $57,000
12/12	3,228 sq ft	32.3	$16,000 – $29,500	$32,500 – $62,000

Published ranges are priced per square foot of roof, so a steeper pitch costs more here only because it has more roof. Many roofers also add a steep-roof charge from about 7/12 or 8/12.

Same 4,000 sq ft, one storey or two (9/12, cut-up (valleys, dormers) roof)

House	Roof footprint	Squares	Asphalt shingles
One storey	4,396 sq ft	55.0	$27,500 – $50,000
Storey and a half	2,992 sq ft	37.4	$19,000 – $34,000
Two storeys (this house)	2,283 sq ft	28.5	$14,500 – $26,000

Large homes usually have several roof planes and a steep pitch. Metal is worth pricing here, weighed against its longer service life.

Materials to order (asphalt shingles, cut-up (valleys, dormers) roof)

Material	Quantity	How it is worked out
Shingles	103 bundles	34.24 squares with 20% waste × 3 bundles per square
Synthetic underlayment	4 rolls	3,424 sq ft ÷ 1,000 sq ft per roll
Ice & water shield	3 rolls	3 ft along 117 ft of eaves + 3 ft along 18 ft of valleys, +5% laps
Starter strip	3 bundles	215 ft of eaves and rakes +5% ÷ 100 ft per bundle
Drip edge	23 10 ft pieces	215 ft of eaves and rakes +5% for laps
Hip & ridge cap	3 bundles	59 ft of ridges and hips +5% ÷ 25 ft per bundle

Did hail hit your area? Insurance often covers hail damage. Check hail history for your city, with storm reports back to 1955.

Questions people ask

How many squares is a 4,000 sq ft house roof?

About 28.5 squares for this large two-storey home at 9/12, or 34.2 to order with 20% waste. The tables show how storeys and pitch change that.

How many bundles of shingles for a 4,000 sq ft house?

About 103 bundles of architectural shingles at three bundles per square, including 20% waste for a cut-up (valleys, dormers) roof.

What would standing-seam metal cost instead?

About $28,500 – $54,500 installed on the same roof, against $14,500 – $26,000 for asphalt, including tear-off of one old layer and a permit.

Is a 4,000 sq ft two-storey roof cheaper than a ranch?

Usually, yes. Spread over two floors, the house needs about 28.5 squares instead of 55.0 for a one-storey 4,000 sq ft ranch at the same 9/12 pitch: about $14,500 – $26,000 against $27,500 – $50,000.