sash window installation specialists in Maidstone
If you're looking for sash window installation in Maidstone, you're in the right place. Pro-Fit Window Systems connects homeowners across Kent with FENSA-registered sash window installation installers who offer free, no-obligation quotes.
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.
Sash Windows prices in Maidstone 2026
We've compiled current installed price ranges for sash window installation in the Kent area. Actual costs depend on window size and specification — compare quotes for a precise figure.
| 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 — Sash Windows in Maidstone
Sash Windows prices in Maidstone — what should I budget?
Kent sash window installation prices typically range from £364 for a single casement window to £3,328 for a bay window, fully installed. Maidstone pricing is in line with the UK average — compare local quotes to find the best deal for your property.
How many days will my sash window installation installation take?
Most installations in Maidstone take 1–3 days, depending on the number of windows. A single window replacement typically takes 2–4 hours. Installers will usually survey the property first and give you an exact timeframe during the quote process.
Are your Maidstone window installers FENSA registered?
Absolutely. FENSA registration is a mandatory requirement for all companies in our Maidstone network. It certifies that installers meet UK Building Regulations standards and automatically includes a 10-year insurance-backed guarantee on every job.
Is planning permission required for window replacement 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.