Whole-house window cost
Replacing every window at once is the most cost-effective way to buy new windows, because the installer sets up once and orders materials in a single batch. As a typical cost to replace windows across a whole home, a semi-detached property with eight to ten windows often lands in the region of £2,700–£6,000, with detached homes and premium specifications sitting higher.
Typical whole-house ranges
| Property | Windows | Typical range |
|---|---|---|
| Terraced house | 5–7 | £2,000–£3,800 |
| Semi-detached | 8–10 | £2,700–£6,000 |
| Detached house | 10–15 | £5,000–£10,000+ |
These are illustrative typical ranges. A bay window, doors, or a switch to aluminium or triple glazing will move the total, which is exactly what a survey is for.
Why doing everything at once is cheaper per window
A single-window job carries the installer’s full set-up cost — travel, scaffolding hire, waste disposal and a day’s labour — against just one unit. Spread that same overhead across a whole house and the per-window rate falls. It also means one consistent finish across the property and a single guarantee to keep track of.
Get a whole-house window price, confirmed on survey.
Get my estimate →Planning a whole-house budget
Start from a per-window figure — see our cost per window guide — then multiply by the number of openings and add allowances for any bay windows, doors, scaffolding and waste. Compare the result with the headline UK ranges to sanity-check it before you request quotes.
If cash flow is a concern, many installers offer funding and contribution options, subject to eligibility and a home survey, so it is worth asking what spreading the cost would look like when you compare quotes. There are also practical funding and contribution options, subject to eligibility that some homeowners explore alongside a straightforward purchase.
Compare free whole-house quotes from vetted local installers.
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