Budgeting for a Whole House of New Windows

Step one: count and measure your openings

Walk the house with a notepad and record every opening: room, approximate width and height, number of opening sashes, and whether it is a bay. A bay counts as one opening but costs like three. Note anything above a conservatory or extension roof, because access affects labour.

Then group them into 'must do now' — anything rotten, insecure, misted or that will not open — and 'can wait'. That list is what you take to an installer.

Step two: apply realistic rates

Step three: decide whether to phase it

If you do phase it, do the worst elevation first — usually the one that gets the weather — and write down the exact profile system and colour code so the second phase matches.

Finance: read it properly

Interest-free credit over 12–24 months is genuinely useful if the cash price is fair. Longer arrangements at double-digit APR routinely add thousands, and the monthly figure is often used to distract from a poor headline price.

Always ask for the cash price first, in writing, before any finance discussion. If the cash price only appears after you ask about monthly payments, that tells you something.

Grants and help in Scotland

Support for energy efficiency measures in Scotland changes from year to year, and windows are frequently excluded in favour of insulation and heating. Check the current Home Energy Scotland advice before assuming a grant exists, and never take an installer's word that funding is guaranteed.

Some local authorities and housing associations run their own schemes for specific properties. It is worth ten minutes on the phone before committing.

Sensible sequencing with other work

• Windows go in before internal decorating, not after.
• If you are having external wall insulation or render, agree the window order with that contractor first.
• New windows before a new kitchen or bathroom saves damaging fresh finishes.
• If the roof needs doing, do the roof first — scaffolding can be shared.

Common budgeting mistakes

The first is costing the windows and forgetting the doors. A front and back door together often add £1,700 to £3,700 to a whole-house figure, and they are usually in worse condition than the windows.

The second is assuming the cheapest quote is the same product. Two quotes £2,000 apart on the same house are almost always specifying different profile systems, different glass and different amounts of finishing work.

The third is not allowing for decorating. New frames mean new internal reveals, and most houses need filling, caulking and a coat of paint afterwards. Allow £30 to £60 per opening if you are doing it yourself and considerably more if you are not.

The fourth is ordering before checking access. Scaffolding for a rear dormer or a window above a conservatory can add several hundred pounds that nobody mentioned at the survey.

Comparing your quotes

Line the quotes up on a single sheet: number of openings, profile system, glass rating, whether disposal and finishing are included, who fits, and the guarantee. Nine times out of ten the cheapest quote is missing at least one of those.

We survey and quote in writing across Central Scotland — Cumbernauld, Glasgow, Falkirk, Stirling and the surrounding towns — and we will tell you which of your windows can wait.