Replacing 12 windows in a home typically costs between $9,000 and $15,600 in 2026. The national average sits around $1,047 per window, including both materials and labor. Vinyl windows are among the most affordable options, ranging from $650 to $1,300 per window installed.
Final costs depend on window style, frame material, and your location, coastal metros and high-cost-of-living markets can run 18–35% above the national median. Getting multiple contractor quotes is the best way to nail down an accurate estimate for your specific home.