| Tear-off existing shingles1800 sq ft × $1.50 | $2,700.00 |
| Underlayment and flashing1800 sq ft × $0.90 | $1,620.00 |
| Architectural shingles installed1800 sq ft × $3.20 | $5,760.00 |
| Dumpster and disposal1 flat × $600.00 | $600.00 |
| Subtotal | $10,680.00 |
Add your local sales tax (calculator), which is not included above. What to include: your business name and contact info, your license number if your state requires one for this trade, the customer's name and job site address, the date and how long the estimate is valid, the scope of work and payment terms, and a signature line to approve it.