Window Replacement Cost in Denver: 2026 Price Guide

Typical installed price ranges per window

Ranges below assume a standard double-hung or slider, installed, with removal and disposal of the old unit. Larger, custom-shaped, or second-story openings cost more.

• Vinyl insert replacement: roughly $500–$900 per window
• Fiberglass or composite: roughly $800–$1,400 per window
• Wood or clad-wood: roughly $1,000–$2,000+ per window
• Full-frame replacement (any material): add roughly $200–$600 per opening
• Whole-home projects (10–15 windows): commonly $6,000–$20,000+

What moves a Denver quote up or down

Frame material and glass package drive most of the price. After that, installation type matters: an insert sits inside the existing frame, while a full-frame install removes everything down to the rough opening — necessary when frames are rotted or hail-damaged.

Local factors also add cost: altitude-rated or capillary-tubed sealed units for Denver's 5,280 ft elevation, low-E coatings for intense UV, lead-safe work practices on pre-1978 homes, HOA color/style approvals, and permit fees in cities that require them.

Insert vs full-frame: when the extra cost is worth it

If the existing frame is square, dry, and solid, an insert is usually the better value. If you see soft wood, water staining, drafts around the trim, or hail-split frames, full-frame replacement fixes the cause instead of covering it.

Ways to keep the price reasonable

Replace the worst-performing windows first, keep common sizes where possible, and compare quotes on the same specification (U-factor, glass package, install type, warranty). Ask whether your utility currently offers efficiency rebates — programs change year to year.

Common questions

How much does it cost to replace one window in Denver?

A standard vinyl insert window typically runs about $500–$900 installed; fiberglass and wood cost more. Size, access, and frame condition change the final price.

Is it cheaper to replace all windows at once?

Usually the per-window price drops on larger projects because setup and travel are shared, but phasing by priority is a reasonable way to manage budget.