How Much Does Window Replacement Cost?

Most homeowners pay $300 to $800 per window installed for standard replacement units in existing openings. A basic vinyl double-hung in a normal-size opening often lands near the middle of that range. Wood and fiberglass windows cost more. Expect $600 to $1,200 per window installed for quality wood or composite frames, especially on larger or custom sizes. Bay windows, bow windows, and large picture units are priced as assemblies, not single units. A small bay window project may run $2,000 to $4,500 installed depending on size and structural support needed. Whole-home replacement multiplies the per-window number but often includes a volume discount. Replacing 10 to 15 windows commonly totals $5,000 to $12,000 for mid-grade vinyl with standard installation.

Frame material is the first major cost split. Vinyl is the most affordable and low maintenance. Wood offers traditional looks but costs more and needs upkeep. Fiberglass and composite frames sit between vinyl and premium wood on price with strong durability. Glass package affects both comfort and cost. Double-pane low-E glass is standard on quality replacements. Triple-pane, argon fill, and specialty coatings add cost but help in extreme climates or noise-heavy locations. Installation type matters. Insert replacement using the existing frame costs less than full-frame removal when the old frame is sound. Full-frame installs cost more because they include new interior and exterior trim, sill work, and more labor. Condition of the opening can add carpentry. Rotted sill plates, out-of-square framing, or lead abatement on very old homes are not window costs alone but show up on the estimate when the crew opens the wall. Custom sizes, grids, between-glass blinds, and specialty shapes all add to the unit price. Standard sizes off the shelf keep projects affordable.

Retrofit or insert replacement fits a new window into the existing frame after removing sash and glass. It is faster and cheaper when the frame is level, dry, and structurally sound. Most homeowner replacement projects use this approach. Full-frame replacement removes the entire old unit down to the studs. You pay more for trim, insulation, and flashing, but you fix hidden rot and get a better seal when the old frame was failing. New construction windows are for major remodels or additions where siding is open. They are not the typical choice for a simple upgrade in an occupied home unless exterior cladding is already being replaced.

Count your windows by type and size, not just total number. A picture window costs more than a small bathroom slider. Note which units are stuck, fogged, or show rot at the sill. Ask installers whether the quote is insert or full-frame, and whether interior trim painting, exterior caulking, and disposal of old units are included. Permits vary by location and should be mentioned upfront. Compare quotes on the same glass package and installation method. A low per-window price that uses thin vinyl and minimal flashing may cost more later in energy bills and callbacks. A written line-item estimate helps you see where money goes on materials versus labor.