Roof Cost for a 1,800 sq ft House (2026 Prices)

Roof cost for a 1,800 sq ft house

Worked out for a 1,800 sq ft one-storey ranch with a 6/12 hip roof, with tables for other pitches, storeys and materials.

1,800 sq ft · one-storey ranch · 6/12

$11,500 – $21,500

2,313 sq ft of roof, 26.6 squares to order (15% waste) · installed, incl. tear-off of one layer and a permit

Change the numbers in the roof cost calculator

The working

1. Floor plan1,800 sq ft on one floor, as a 1.5:1 rectangle = 34.6 ft × 52.0 ft1,800 sq ft
2. Add overhangs(34.6 ft + 3) × (52.0 ft + 3), for 1.5 ft eaves on every side2,069 sq ft footprint
3. Roof surface2,069 sq ft footprint × 1.118 (6/12 pitch multiplier)2,313 sq ft
4. Squares to order2,313 ÷ 100 = 23.1 squares, + 15% waste (hip roof)26.6 squares
5. Installed2,313 sq ft × $4–$6 per sq ft (architectural asphalt shingles, HomeGuide, Nov 7, 2025)$9,252 – $13,878
6. Tear-off2,313 sq ft × $1–$3 per sq ft to remove one layer (HomeGuide)$2,313 – $6,939
7. PermitFlat fee, set locally (HomeGuide, Fixr)$100 – $500
8. Installed totalSum, rounded to $100 under $10,000 and $500 above$11,500 – $21,500

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 1,800 sq ft house at other pitches

Pitch	Roof surface	Squares	Asphalt shingles	Standing-seam metal
3/12	2,132 sq ft	21.3	$11,000 – $19,500	$21,500 – $41,000
4/12	2,181 sq ft	21.8	$11,000 – $20,000	$22,000 – $42,000
6/12 (this house)	2,313 sq ft	23.1	$11,500 – $21,500	$23,000 – $44,500
8/12	2,486 sq ft	24.9	$12,500 – $23,000	$25,000 – $47,500
10/12	2,693 sq ft	26.9	$13,500 – $24,500	$27,000 – $51,500
12/12	2,926 sq ft	29.3	$14,500 – $27,000	$29,500 – $56,000

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 1,800 sq ft, one storey or two (6/12, hip roof)

House	Roof footprint	Squares	Asphalt shingles
One storey (this house)	2,069 sq ft	23.1	$11,500 – $21,500
Storey and a half	1,421 sq ft	15.9	$8,000 – $15,000
Two storeys	1,093 sq ft	12.2	$6,200 – $11,500

The classic ranch: a wide, low hip roof. Most of the price is the sheer area, so a material change moves the total more than the pitch does.

Materials to order (asphalt shingles, hip roof)

Material	Quantity	How it is worked out
Shingles	80 bundles	26.6 squares with 15% waste × 3 bundles per square
Synthetic underlayment	3 rolls	2,660 sq ft ÷ 1,000 sq ft per roll
Ice & water shield	3 rolls	3 ft along 186 ft of eaves, +5% laps
Starter strip	2 bundles	186 ft of eaves and rakes +5% ÷ 100 ft per bundle
Drip edge	20 10 ft pieces	186 ft of eaves and rakes +5% for laps
Hip & ridge cap	6 bundles	130 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 1,800 sq ft house roof?

About 23.1 squares for this one-storey ranch at 6/12, or 26.6 to order with 15% waste. The tables show how storeys and pitch change that.

How many bundles of shingles for a 1,800 sq ft house?

About 80 bundles of architectural shingles at three bundles per square, including 15% waste for a hip roof.

What would standing-seam metal cost instead?

About $23,000 – $44,500 installed on the same roof, against $11,500 – $21,500 for asphalt, including tear-off of one old layer and a permit.

Does a hip roof cost more than a gable roof?

At the same pitch over the same footprint, a hip and a gable roof have the same area, so published per-square-foot prices give the same $11,500 – $21,500. The hip roof needs more material: 26.6 squares to order against 25.4, because hips waste more shingles, and roofers often price the extra cutting in.