Roof Replacement Cost Calculator for Boise, ID
This calculator gives Boise, Idaho homeowners a rough price range for a new roof in under a minute. Answer four questions about your home, and it estimates your roof's surface area, then prices it with 2026 Idaho cost figures for shingles or metal. No contact details are needed to see the result.
Prefer to talk? Call now(208) 555-0147How to Use This Tool
Before you start, it helps to know how the math works. The calculator takes your home's size and divides it by the number of stories to get the footprint. It then multiplies by a slope factor and adds 10% for overhangs to estimate the roof surface. That area is priced at a low and high rate per square foot.
The rates come from the Idaho cost rows on our cost guide. For shingles, the range runs from $4.50 to $7.00 per square foot. This Old House's 2026 asphalt figure of $4.17 sits just below it, and Roof Observations' 2026 architectural estimate of $5.55 sits inside it. For metal, the range runs from $8.50 to $15.00, with This Old House's $8.11 as the floor and Roof Observations' $14.35 standing-seam estimate inside.
| Cost row | Figure | Source (year) |
|---|---|---|
| Idaho re-roof, typical total | about $7,947 (common range $6,117–$20,703) | This Old House, 2026 (a cost model) |
| Idaho asphalt shingles, per sq ft | about $4.17 per sq ft | This Old House, 2026 |
| Idaho architectural shingles, per sq ft | about $5.55 per sq ft | Roof Observations, 2026 (an estimate) |
| Idaho metal, per sq ft | about $8.11 per sq ft | This Old House, 2026 |
| Idaho standing-seam steel, per sq ft | about $14.35 per sq ft | Roof Observations, 2026 (an estimate) |
What to Do With the Result
Use the range to sanity-check bids, not to set a budget to the dollar. If a quote lands far outside it, ask the roofer what drives the gap. Boise allows no more than two layers of roofing, so a home with two layers already will need a full tear-off, which adds cost.
When you want a real number, request a free inspection. We connect you with an independent local roofer, who measures the roof and gives you a written price. You can also read the full roof replacement cost guide or take the repair or replace checker first.