Window Installation & Replacement in Littlehampton

Windows are priced per opening: the unit itself (frame material, glazing spec, size) plus installation labour. A standard-size replacement in an existing opening is the base case; enlarging openings, upper-floor access, bay windows and heritage styles add meaningfully. Whole-house jobs get per-window discounts.

Per-window pricing with glazing spec, removal and disposal of old windows, making good internal reveals and external sealing, hardware, and warranty terms for both the unit (often 10 years) and the installation. Cheap quotes commonly exclude making-good — the messiest part.

Like-for-like replacement is usually permit-free, but many places regulate windows through energy codes, safety-glass rules, and egress requirements for bedrooms — and heritage/conservation properties almost always need consent for changes. Your installer should know local rules; ask what paperwork you'll receive at completion.

The sealed unit has failed and let moist air in. The fix is usually replacing just the glass unit, not the whole frame — a fraction of full replacement cost. Widespread misting across many windows of the same age suggests the batch is failing and full replacement may be better value.

A standard uPVC casement typically lands £400-800 fitted; sash and timber windows run £1,000-2,500+ each. A typical 3-bed semi full replacement lands £4,000-8,000 in uPVC.

It's proof your replacement windows were installed to Building Regulations by a self-certifying installer. Without it (or a Building Control certificate) you'll face questions and indemnity insurance when selling the property.