Heritage-quality windows for British homes

Expect £450-£900 per UPVC casement window fitted, £700-£1,300 for a UPVC sash sliding window, and £1,500-£3,000 for a modern timber sash. Full house replacements (8-10 windows) typically land between £4,500 and £9,500 for UPVC and £14,000-£28,000 for timber - driven by frame material, glazing spec (A/A+ rated), and access complexity.

Yes. Homeowners pay nothing. Our vetted installer network pays a small referral fee when they receive a matched quote request, which keeps the recommendations unbiased - there is no incentive to push one installer over another.

Only firms holding valid public liability insurance, a FENSA or CERTASS registration, and a documented workmanship + IGU guarantee (10 years minimum) are accepted into the network. We also filter by area of coverage so you're not matched with an installer 90 miles away.

Standard like-for-like window replacements fall under permitted development and don't need planning permission - but they must comply with Building Regulations Part L (energy efficiency, U-value ≤1.4 W/m²K on replacements) and Part F (background ventilation, usually trickle vents). A FENSA/CERTASS-registered installer self-certifies this for you. Conservation areas, listed buildings and flats above ground level have stricter rules - flag these upfront in your quote request.

A survey typically happens within 5-10 days of accepting a quote, manufacturing runs 3-4 weeks for UPVC and 6-10 weeks for made-to-measure timber, and the fit itself is 1-2 days for a typical 3-bed semi. Bad weather and access issues are the two most common causes of slippage.

Upgrading a whole-house of pre-2002 single or early double glazing to A+ rated units (Ug ≤ 1.0 W/m²K, warm-edge spacer, argon fill) typically cuts heating demand by 12-18% - roughly £110-£180 a year on a mid-terrace at current UK unit prices, and more on a detached with lots of glazing. Payback for the glazing upgrade alone is 10-15 years; the comfort and noise reduction are the real day-to-day wins.

Yes - and this is what Legacy Windows is built around. UPVC flush sash and 'heritage' casement ranges now offer astragal bars, mechanical joints and RAL colours that read as timber from the kerb, and slimline double glazing (14mm units) plus timber alternatives cover the cases where UPVC won't fly with the conservation officer. We flag installers with genuine period-property experience in your area.

Listed buildings need Listed Building Consent for any window change and will usually require timber replacements matching the original glazing bars and profile. Conservation areas vary by council - many allow like-for-like UPVC on rear elevations only. Secondary glazing (a separate internal pane) is often the compliant compromise: keeps the original windows, adds thermal + acoustic performance, no consent needed on most listed buildings.