How to Price Roofing Jobs: Cost Per Square, Waste, Labor and Margin

A roof replacement is a big ticket with a lot of moving parts: materials, waste, crew labour, disposal, permits, decking surprises and sales costs. Miss one and your margin disappears on a job that looked profitable on paper. This guide shows how to build a roofing price from measurements to final number, with a full worked example.

All figures are illustrative as of 2026. Prices vary widely by region, material and roof complexity. Build your own numbers and verify against local supplier and crew rates.

Step 1: Measure the roof in squares

A square is 100 square feet of roof surface, not floor area. Measure each plane, or use an aerial measurement report, and total the squares. Record:

• Total squares
• Pitch of each section
• Number of layers to remove
• Linear feet of ridge, hip, valley, eave and rake
• Penetrations: pipes, vents, chimneys, skylights
• Access issues: steep driveways, landscaping, power lines

Tip: Verify aerial reports on site for your first jobs. Small measurement errors turn into large material errors on complex roofs.

Step 2: Build the materials list

Waste is typically around 10 to 15 percent on simple roofs and more on complex roofs with many hips and valleys.

Step 3: Price labour by square, then adjust

Many roofers pay crews per square, with adjustments for:

If you use employees rather than subcontract crews, calculate a loaded hourly wage (wages plus payroll taxes, workers' compensation and benefits) and multiply by realistic production hours. Roofing workers' compensation rates are among the highest in construction, so do not underestimate the load.

Step 4: Add tear-off, disposal, decking and permits

• Tear-off and disposal: labour, dumpster or dump trailer, and landfill fees.
• Decking: put a unit price in the contract per sheet replaced, since rotted decking is common and invisible until tear-off.
• Permits: most jurisdictions require a permit for a full reroof. Fees range from under $100 to several hundred dollars or more.
• Equipment: hoist, lifts, roof jacks, fall protection, tarps.

Step 5: Apply overhead, commission and profit correctly

Here is the critical step. Overhead, sales commission and profit are percentages of the selling price, so you divide, not multiply.

Price = direct cost ÷ (1 − overhead % − commission % − profit %)

A roofer who adds 40 percent to cost thinking it covers 40 percent of overhead and profit actually keeps only about 29 percent of the selling price.

Worked example: 30-square architectural shingle tear-off

Final price: about $16,800, or roughly $560 per square.

Now check what happens if you skip the division and add 40 percent instead: $10,100 × 1.40 = $14,140. You would collect $2,693 less on this one job. Across 50 roofs a year, that is more than $130,000 of missing overhead and profit.

Step 6: Present good, better, best

Homeowners like choices. On the same roof you might offer:

Impact-resistant shingles may qualify for insurance premium discounts in some states, which can be a strong selling point in hail-prone areas. Ask the homeowner to verify with their insurer.

Repairs and minimum charges

Repairs are small tickets with the same truck, ladder and safety costs as big jobs. Set a minimum repair charge and price common repairs (pipe boot replacement, small flashing repair, replacing a handful of shingles) as flat rates. Charge for leak investigations where the cause is unknown.

Insurance claim jobs

On insurance work, the scope and price are usually based on the insurer's estimate, often written in Xactimate. Learn how claims estimates are built and how supplements work. Never offer to waive or absorb a homeowner's deductible; it is illegal in many states. Do not act as a public adjuster unless you hold that license.

Track job costing after every roof

An estimate is a prediction; job costing tells you whether it was right. After each roof, compare the estimate with actual costs:

In this example, the decking overage was covered by the per-sheet unit price in the contract, but the extra waste and second haul came out of profit. After five or ten roofs, patterns appear: perhaps your waste factor on cut-up roofs should be higher, or dumpster sizes need adjusting. Update your estimating template each time you spot a pattern.

Quote validity and material price changes

Material prices can change between the day you sign a contract and the day the crew arrives. State in every quote how long the price is valid, often 15 to 30 days, and how you will handle significant price increases before materials are ordered. Order materials promptly once the contract is signed, and confirm delivery dates so crews are not idle.

Common pricing mistakes

1. Measuring floor area instead of roof area.
2. Ignoring pitch and complexity in labour.
3. No decking unit price in the contract.
4. Forgetting sales commission when you hire salespeople.
5. Adding markup instead of dividing for margin.
6. Not updating material prices, which can change between the estimate and the build date. State how long your quote is valid.

Questions readers ask

Should I quote roofs by the square or as a total price?

Calculate by the square internally, but present homeowners with a total price for each option, along with what it includes. A per-square number invites comparisons with competitors whose scope may be very different, such as fewer layers removed, no ice barrier or cheaper underlayment. A clear total with a line-item scope shows exactly what the homeowner is buying and makes a fair comparison easier.

How do I price roof repairs compared with replacements?

Repairs carry the same setup, travel, ladder and safety costs as a replacement but produce far less revenue, so most roofers use a minimum repair charge and flat rates for common repairs. Leak investigations should be charged separately when the cause is unknown, because finding a leak can take longer than fixing it.

Should I offer financing on roof replacements?

Many roofers partner with consumer financing providers, which can help homeowners choose better options. Financing usually carries a dealer fee, so build that cost into the price of financed jobs where allowed and disclose terms clearly.

Your next step

Take your last three roofs, rebuild the price with the formula above, and compare it with what you charged. If the gap is large, update your estimating template before your next appointment.

The full guide, Starting a Roofing Business, covers pricing, the sales process, insurance claims done right, OSHA fall protection, crews and a 30/60/90-day plan, for $0.99.