Roof Replacement Cost Estimator — Line-by-Line Breakdown
Unlike black-box calculators that hide their math, our transparent approach lets you see and edit every line item. Build your own bid for a roof replacement using real local prices.
Transparent Project Cost Estimator
Unlike other tools, every line item is visible, editable, and saved to your browser. Your prices persist across visits.
Cost Estimate & Budget Customizer
Configure local unit prices and contractor rates
| Material Description | Qty | Unit Price | Total |
|---|---|---|---|
| Shingle Bundles | 66 bundles | $ | $2,310 |
| Underlayment Rolls | 5 rolls | $ | $250 |
| Ridge Cap | 4 bundles | $ | $180 |
| Drip Edge | 250 lf | $ | $375 |
| Roofing Nails | 2 boxes | $ | $80 |
| Ice-Water Shield | 2 rolls | $ | $120 |
| Materials Subtotal: | $3,315 | ||
Your Saved Prices Persist
Any prices you edit are saved in your browser's localStorage. Come back anytime to see your customized estimate.
Frequently Asked Questions
How accurate is this estimate?
This estimate uses national average pricing for materials and labor. However, because it is fully transparent, its accuracy depends on how closely the default prices match your local market. You can edit any line item to reflect actual quotes from your local suppliers.
Can I use my local prices?
Yes! Every single line item in this estimator can be edited. When you change a price, it is automatically saved to your browser's local storage so you won't lose your work if you refresh or return later.
What's included in the labor cost?
Labor cost can be calculated either as a percentage of materials (typical for many trades) or based on an hourly rate and estimated hours. This flexibility allows you to model both DIY-with-help and full-contractor scenarios.
How is the contingency buffer calculated?
The contingency buffer is a percentage applied to the total project cost (materials plus labor). We recommend keeping it at least at 10% to account for unplanned waste, rework, or hidden issues discovered during the project.
Why is this better than Homewyse or other calculators?
Unlike black-box calculators that hide their math, this estimator shows you exactly what materials are being counted and what they cost. You have full control over the line items, making it a true bid-building tool rather than just a rough guess.