Is it cheaper to replace all windows at once or one room at a time?

• Full-house installations are usually more efficient for the installer, so the cost per window is lower.
• You only pay once for access equipment (for example, towers or scaffolding) and site set-up.
• Doing everything together keeps frames, handles and glass looking consistent across the property.
• A phased, room-by-room upgrade can still make sense if you have a tight budget or want to prioritise the coldest rooms first.
• Asking JF Doors & Windows for two quotes (whole house vs phased) makes it easier to compare costs and timings.

From an installer's point of view, replacing all windows in one project is usually more efficient. The team arrives once, sets up once, and works around the property in a logical order. This typically brings down the cost per window, especially where access is tricky or scaffolding is needed.

When you spread the work room by room, you effectively repeat some of the same costs multiple times: travel, set-up, clearing up and sometimes access equipment. Over several smaller jobs, that can add up to more than you would have paid for one well-planned full-house installation.

There are still good reasons to phase the work. If your budget is limited, you might choose to tackle the dampest, draughtiest or noisiest rooms first, such as bedrooms and living rooms, and leave less-used spaces until later. You might also time work around other renovations.

JF Doors & Windows can price both options for you: one quotation to replace all windows at once, and another that breaks the project into phases. Seeing both figures side by side makes it much easier to decide whether the extra convenience of phasing is worth the additional overall cost.