Ask three contractors what a new roof costs and you'll get three numbers that can differ by $10,000 — for the same house. That's not because someone is lying; it's because 'a new roof' hides a dozen decisions about scope. This guide breaks down what actually sets the price on a Denver-metro home in 2026, the honest ranges we quote every week, and the line items that make cheap bids expensive later.
The five factors that set your price
Size comes first — roofers price by the 'square' (100 sq ft), and most Front Range homes run 25–35 squares once you account for overhangs and garages. Then pitch and complexity: a walkable 4/12 ranch costs meaningfully less per square than a cut-up 10/12 two-story with dormers and valleys, because steep roofs need more safety gear, more time, and more waste. Material is the biggest swing (see the ranges below). Tear-off layers matter — a second layer of old shingles adds disposal weight and labor. And decking condition is the wildcard: rotten sheathing has to be replaced before anything goes on top, which is why an honest quote prices it per sheet in advance.
Typical ranges by material
For a typical 30-square Denver-metro home in 2026: architectural asphalt shingle runs $12,000–$19,500 installed ($4.00–$6.50 per sq ft). Class 4 impact-rated shingle — worth it in Hail Alley, and often insurer-discounted — adds roughly 10–15%. Standing-seam metal runs $27,000–$45,000 ($9–$15 per sq ft) but lasts two to three times longer. Concrete or clay tile lands between $33,000 and $60,000 and needs framing that can carry the weight. Flat and low-slope sections in TPO or EPDM run $7–$11 per sq ft. These are installed, permitted, warrantied numbers — materials-only math you see online is usually half the real picture.
| Material | Installed cost* | Per sq ft | Lifespan |
|---|---|---|---|
| Architectural shingle | $12,000–$19,500 | $4.00–$6.50 | 25–30 yrs |
| Class 4 impact-rated shingle | $13,500–$22,500 | $4.50–$7.50 | 25–30 yrs |
| Standing-seam metal | $27,000–$45,000 | $9.00–$15.00 | 40–70 yrs |
| Concrete / clay tile | $33,000–$60,000 | $11.00–$20.00 | 50+ yrs |
| TPO / EPDM (flat) | — | $7.00–$11.00 | 20–30 yrs |
The line items bad quotes hide
Four things separate a real quote from a teaser number. Decking allowance: if plywood replacement isn't priced per sheet up front, expect a mid-job change order. Flashing: reusing old step and chimney flashing saves the contractor an hour and costs you the next leak — new flashing should be listed, not assumed. Permit and disposal fees: in most metro cities that's $400–$900 combined, and 'we'll handle it' should mean it's in the number. And ventilation: code requires balanced intake and exhaust, and skipping it quietly voids most shingle warranties.
How to compare quotes fairly
Line the bids up on identical scope before you look at the bottom line: same shingle line and class, same underlayment spec, ice & water shield at eaves and valleys, new flashing everywhere, decking priced per sheet, permit and disposal included, and both warranties in writing — manufacturer material and contractor workmanship. Then ask who's actually on the roof: an employed, certified crew and a subcontracted day crew can be a $3,000 difference that never shows up on paper. If one bid is dramatically lower, the money came out of one of these lines — find which one before you sign.
