Window Replacement Calculator

Replacing the windows in a home is one of those projects where the sticker price hinges on dozens of small choices, and pinning down a realistic 2026 number before you call a contractor makes budgeting far less stressful. The estimate here weighs the window type you pick, the frame material, and how many openings you plan to do, since the same house can land at wildly different totals depending on those three levers and on what you hope to gain in energy efficiency and resale value.

Behind the result is a weighted-average cost model that draws on current market pricing for the major window styles, single-hung, double-hung, casement, and picture, and for the common frame materials such as vinyl, wood, fiberglass, and aluminum. Installation is layered on top as a percentage of the unit cost, generally falling between 25% and 40% depending on how involved the job is and what labor runs in your region. In practice, the tool tallies the per-unit cost across your selections and then adds that installation charge.

Treat the figure as a starting point rather than a quote. Real-world totals shift with your location, the bids you collect, and any structural surprises that turn up once the old frames come out. Costs that catch people off guard tend to be the peripheral ones, new trim work, hauling away the old units, and lead paint abatement in older homes, none of which show up in a bare per-window price. The sensible next move is to gather several bids from certified installers and compare them against this baseline.