How much does it cost to replace a 1,500 sq ft roof in 2026?
For a 1,500-square-foot house, TheRoofBill's worked example estimates about $10,400–$13,700 for architectural asphalt shingles. That is a transparent planning example, not a national quote: it assumes a one-story Texas home, simple gable roof, 6/12 pitch, and one existing layer to remove. Every input is shown below so you can compare it with contractor bids.
The key detail: 1,500 sq ft of house is not necessarily 1,500 sq ft of roof. A sloped roof has more surface area than its footprint, and overhangs, dormers, valleys, and additions can push it higher still.
What the estimate includes
Here is the calculation for a 1,500 sq ft footprint with a medium-pitch, simple-gable roof in Texas. These are the same published inputs used in our cost methodology:
| Estimate item | Calculation | Example range | | --- | --- | --- | | Roof surface area | 1,500 sq ft footprint × 1.12 slope factor | About 1,680 sq ft | | Architectural asphalt installation | 1,680 sq ft × $5.21–$6.82/sq ft × 0.98 Texas labor factor | About $8,580–$11,230 | | One-layer tear-off | 16.8 roofing squares × $39–$53 per square | About $655–$890 | | Permits and disposal allowance | Model allowance | $300–$480 | | Decking contingency | 10% of base installation | About $860–$1,120 | | Estimated total | Sum of the listed items | About $10,400–$13,700 |
The inputs are estimates from the model, not a promise that a local roofer will charge these prices. The state factor only adjusts labor; permits and disposal vary by municipality, and damaged decking beyond the contingency can add cost. Gutters, structural framing repairs, and financing are not included.
Why 1,500 square feet of house can mean more roof
House size usually refers to interior floor area or building footprint. Roofing is priced on the actual sloped surface. In this example, the model uses a 1.12 slope factor for a 6/12 pitch, turning a 1,500 sq ft footprint into roughly 1,680 sq ft of roof surface. That equals 16.8 roofing squares before material waste; one roofing square is 100 sq ft.
The roof can be larger still if the home has wide eaves, multiple wings, dormers, or many valleys. A two-story 1,500 sq ft home may have a smaller footprint than a one-story home of the same interior area, so its roof can require less material. Ask your roofer for the measured roof area and pitch rather than relying on home square footage alone.
Example planning ranges by house footprint
The table below scales the same example assumptions across several one-story home footprints. It is a comparison aid, not a set of national averages or measured roof quotes.
| One-story home footprint | Assumed roof area at 6/12 pitch | Example planning range | | --- | --- | --- | | 1,000 sq ft | About 1,120 sq ft | $7,000–$9,400 | | 1,200 sq ft | About 1,344 sq ft | $8,300–$11,100 | | 1,500 sq ft | About 1,680 sq ft | $10,400–$13,700 | | 2,000 sq ft | About 2,240 sq ft | $13,700–$18,200 | | 2,500 sq ft | About 2,800 sq ft | $17,100–$22,600 |
Each row assumes a simple-gable roof, architectural asphalt shingles, Texas labor adjustment, one layer removed, a 10% decking contingency, and the model's permit/disposal allowance. The roof-area estimate uses the model's 1.12 slope factor; it does not add overhangs, roof waste, extra stories, dormers, or other add-ons. Change the location, roof shape, pitch, material, or tear-off assumptions in the calculator before using a figure for planning.
What other 2026 guides report for a 1,500 sq ft roof
Cost guides do not all measure the same thing. Their figures can differ from this site's worked example because material, labor market, roof measurement, and included line items vary. Treat third-party averages as context, not as a direct comparison with a quote for your house.
- A 2026 guide from BestRoofingEstimates, checked October 2026, reports $6,700–$16,500 for a 1,500 sq ft roof with a national average near $11,750 for architectural asphalt, and breaks out material-only shingle costs of roughly $3,500–$4,800 for architectural shingles.
- This Old House's 2026 cost guide, cited in October 2026 coverage, reports an average of $11,631 for a 1,500-square-foot asphalt-shingle roof, or about $5,117 per 1,000 square feet of roof.
- Angi's 2026 roof replacement guide reports $3,375–$13,500 for a 1,500-square-foot home with a standard-pitch gable roof, inside a broader national shingle range of $7,500–$24,000.
- SquareDash's 2026 pricing, checked October 2026, lists $5,700–$7,200 for architectural shingles on a 1,500 sq ft house (about 1,800 sq ft of measured roof area), rising to $12,600–$21,600 for standing-seam metal.
Note the common trap: a source's "1,500 sq ft roof" means roof surface area. It should not be read as a 1,500 sq ft house.
What changes the cost most?
- Roofing material: Architectural asphalt is the basis for our example. Three-tab shingles cost less per square; metal, tile, and slate cost substantially more. Compare material ranges in the calculator and in our asphalt shingle cost guide.
- Pitch and shape: Steeper roofs take longer and require more safety setup. Hips, dormers, and valleys add cuts and complexity compared with a plain gable.
- Location: Labor and permit costs vary. Our example uses Texas's 0.98 labor factor; it is not a national average and should not be applied to another state. See cost per square foot for how local rates move the math.
- Existing roof layers: The example removes one asphalt layer. A second layer or a heavier existing material adds tear-off and disposal work.
- Decking condition: Rot discovered after the old covering comes off can require replacement. The model includes a 10% contingency for decking, but severe damage can exceed it.
- Access and height: Multi-story homes, limited staging space, and difficult driveway access can affect labor and debris handling.
How to compare roofing bids
Request at least two or three written estimates and check that each one uses the same scope. A useful bid states the measured roof area and pitch, material brand and product line, underlayment and flashing, number of layers removed, disposal, permit responsibility, decking price, ventilation work, and workmanship warranty. Ask whether the quoted total includes tax and cleanup.
If one bid is dramatically lower, find out whether it excludes tear-off, assumes no decking repairs, or uses a different shingle grade. Our roof repair vs. replacement guide can help you confirm a full replacement is the right scope before you compare prices, and how many roofing quotes to get explains why bid structure matters more than bid count.
Sources: TheRoofBill 2026 cost model and methodology page; BestRoofingEstimates 2026 guide (updated ~September 2026); This Old House 2026 cost guide figures as cited October 2026; Angi 2026 roof replacement guide; SquareDash 2026 pricing pages. All checked October 2026.
Frequently asked questions
How much does it cost to replace a roof on a 1,500 sq ft house in 2026?
TheRoofBill's worked example comes to roughly $10,400–$13,700 for a one-story home with a simple gable, medium-pitch architectural asphalt roof and one layer to remove. National 2026 guides report wider ranges — roughly $6,700–$16,500 — because they cover different materials, roof shapes, and labor markets. Your bids depend on measured roof area, not house size.
Is a 1,500 sq ft house the same as a 1,500 sq ft roof?
Usually not. House square footage describes the floor footprint, while the roof surface grows with slope, overhangs, and shape. In our example, a 1,500 sq ft footprint becomes about 1,680 sq ft of roof area at a 6/12 pitch, before waste or complexity. Ask the contractor for the measured roof area and pitch.
How many roofing squares are on a 1,500 sq ft house?
Using our example's 1,680 sq ft of roof area, that is about 16.8 roofing squares before waste. A roofing square covers 100 sq ft. The contractor's material order will be larger to cover cuts, valleys, starter strips, and the product's installation requirements.
What is the cheapest way to replace a 1,500 sq ft roof?
Three-tab asphalt shingles are generally the lowest-cost material in 2026 pricing guides, but the cheapest bid is not always the cheapest project. Compare written bids with identical scope — tear-off, underlayment, flashing, disposal, permits, decking terms, and warranty — because a low bid can exclude work the others include.
How long does it take to replace a 1,500 sq ft roof?
A professional crew typically finishes an asphalt shingle roof this size in 1–2 days on the roof, though scheduling, permits, and weather can stretch the full project to a few weeks. See our timeline guide for what drives the calendar.
Cost figures are planning estimates based on 2026 public data (Homewyse, Angi, Fixr, BLS). They are not contractor quotes. Full disclaimer · How we calculate.