Roof Replacement Cost & ROI Calculator
Estimate asphalt shingle roof replacement cost, materials, ROI, and contractor guidance.
How much does an asphalt roof replacement cost?
For a typical 1,200 sq ft (about 40×30) home with moderate pitch, professional installed ranges often land in the mid five figures once tear-off, underlayment, labor, permits, and contingency are included. Materials-only budgets are substantially lower. Run the calculator with your length, width, and pitch for a planning range — not a contractor quote.
Should I DIY a roof replacement?
No. Roofing involves fall risk, permits, and warranty requirements. The materials-only and Compare modes are for budgeting and understanding line items so you can evaluate contractor bids — not for DIY installation guidance.
Repair or full replacement?
Choose Localized repair / leak investigation in the guided interview for missing shingles or small areas. Widespread damage, end-of-life covering, or multiple layers usually favor full replacement. Ask contractors to quote both when unsure.
What inputs change the estimate most?
Roof area (footprint × pitch × shape), tear-off vs roof-over, number of existing layers, story height, steep pitch, and difficult site access. Architectural vs 3-tab shingles also moves material cost.
Want professional help with this project?
This project involves permits, safety risks, or licensed trades. Consider asking a professional for guidance.