Cost & Planning
How Long Does Window Replacement Take?
Realistic timelines for single-window and whole-home replacement projects, and what can extend them.
A single window replacement typically takes 45 minutes to an hour and a half once the installation crew is on site. A whole-home project of 10–15 windows is usually completed in one to two days under normal conditions.
What can extend the timeline
- Full-frame work takes longer per window than a pocket replacement, since it involves removing the frame down to the studs.
- Unexpected damage — rot or moisture issues discovered once the old window is out can add repair time before the new unit goes in.
- Custom or oversized windows may need more careful handling and fitting.
- Weather can pause exterior work, though reputable installers plan around this — see our guide on winter installation.
Before installation day
The timeline above covers installation itself. Custom-ordered windows typically have a manufacturing lead time of several weeks before they arrive on site — factor that into your overall project timeline, not just the install day itself.
Related question
One more thing homeowners ask.
Yes — most homeowners stay in the home throughout. Installers work one opening at a time, so only one room is affected at any given moment.
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