How Much Does Grade II Listed Window Replacement Cost?

Listed window replacement costs more than an ordinary job, and owners are right to ask why. The short version is bespoke timber joinery, slim heritage glazing and the time spent preparing a consent application, none of which exists on a standard uPVC order.

The figures below come from the pricing already published across our site and reflect jobs in Devon, Cornwall, Dorset and Somerset.

Typical fitted prices

In practice, heritage specification slim timber sashes usually cost sixty to one hundred and twenty per cent more than an equivalent uPVC window. We always give both prices where uPVC would be allowed, so the difference is clear.

• Timber sliding sash, made to measure: around £1,800 to £3,000 per opening
• Engineered hardwood casement, factory painted: around £1,200 to £2,000 per opening
• For comparison, a standard white uPVC casement: around £550 to £900

What pushes a listed job up

• Copying unusual glazing bar patterns or curved heads
• Single glazed divided lights where the officer requires them
• Out of square openings that need scribing and careful making good
• Scaffold on tall or terraced elevations
• Repairs to rotten sub cills or lintels found once frames come out

What does not cost extra with us

The survey is free, and the drawings, product specification and photographs for the consent application are supplied at no charge. Each quote is itemised in writing so you can see exactly what each opening costs.

Ways to control the budget

Not every window on a listed building carries the same weight. Officers may accept a simpler specification on rear elevations, and some windows are better repaired than replaced. Where the frames are sound, refurbishment and secondary glazing can cost far less than new joinery. Phasing the front elevation first is also common.

Time is a cost too

Allow eight to twelve weeks for consent and a similar period for manufacture. Starting early avoids paying for scaffold twice or rushing a decision in winter.

Reading a listed window quote

A useful listed quote lists each opening separately with its style, timber, glazing type, bar pattern and colour. It states whether the price includes scaffold, removal of old frames, making good in lime where required and redecoration of reveals. It should also say what happens if hidden decay is found once frames come out, so there are no surprises mid job. If two quotes differ widely, the difference is usually in glazing bars, glass type or the joinery profile, and it is worth asking each firm to explain line by line.

Questions people ask