window replacement specialists in Maidstone
Finding reliable window replacement installers in Maidstone just got easier. Pro-Fit Window Systems works with a vetted network of FENSA-registered specialists across Kent who compete for your business — at no cost to you.
From a single window replacement to a full property upgrade, our network of Kent specialists will compete for your job. Homeowners in South East England who compare quotes typically save £416–£1,248 against the first price they're offered.
Window Replacement prices in Maidstone 2026
Here's a guide to what you can expect to pay for window replacement in Maidstone. All prices are installed costs — use our free tool to get your exact local quote.
| Window Type | From (installed) | Up to (installed) |
|---|---|---|
| Casement (single) | £364 | £728 |
| Casement (large) | £520 | £936 |
| Sash Window | £624 | £1,144 |
| Bay Window (3-panel) | £1,248 | £3,328 |
| Tilt & Turn | £416 | £780 |
* Prices are estimates for Maidstone based on current market data. Your exact quote will depend on window size, specification and chosen installer.
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Get Quotes in Maidstone →FAQs — Window Replacement in Maidstone
Window Replacement prices in Maidstone — what should I budget?
Installed window replacement costs in Maidstone start from around £364 per window and can reach £3,328 for larger bay units. Kent prices are in line with the national average. Getting multiple quotes through our free service is the most reliable way to establish an exact budget.
How many days will my window replacement installation take?
The time required depends on how many windows are being installed. In Maidstone, a single window can be replaced in 2–4 hours, while a whole-house installation typically takes 2–3 days. Your installer will confirm the schedule during their free property survey.
Are the window fitters in Maidstone properly certified?
Yes. Every installer in our Maidstone network is FENSA registered, which means they are certified to install replacement windows in compliance with UK Building Regulations. FENSA registration also provides a 10-year insurance-backed guarantee on all installations.
Do I need planning permission for new windows in Maidstone?
For the majority of Maidstone properties, window replacement is classed as permitted development and does not need planning permission. Exceptions apply if your home is in a Kent conservation area or is a listed building, in which case local authority consent may be required.