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Costs

What windows and doors actually cost

A single uPVC window costs roughly £400 to £850 supplied and fitted, and a full house of nine windows around £3,600 to £7,650. A composite front door runs £900 to £2,350, and aluminium bi-folds £3,000 to £7,500. Material, size and how many you do at once move the figure most.

Every figure on this page is a published industry guide with its source named underneath, not a price we made up and not a quote. We are an introducer, so we are not the party who prices your job. Use these to sanity-check what you get quoted.

Take-off

Work out a rough range

Count what you are replacing and the schedule on the right prices it line by line from published unit rates, with the reference against each one. It is a range, never a quote: only a surveyor measuring your openings can give you that.

Rates checked 2026-10-09

What are you replacing?

01
02

6 windows

Count every opening, including small ones. A three-bed semi is usually eight to ten.

Frame material

03

Sheet Schedule of indicative costs

Basis Published guides

Checked 2026-10-09

Indicative guide, not a quote

    Total, supplied and fitted

    £2,400 – £5,100

    Low High

    Get a real price from a vetted installer

    One installer, not five. They measure, they quote, and the price is theirs.

    Schedule of rates

    Window prices at a glance

    Per window, supplied and fitted, including removing the old one. Each bar sits on the same scale, so the gap between materials reads at a glance.

    • uPVC windows

      £400 – £850

      Ref. 1 · checked 2026-10-09

    • Aluminium windows

      £600 – £1,250

      Ref. 2 · checked 2026-10-09

    • Timber windows

      £800 – £1,600

      Ref. 2 · checked 2026-10-09

    • Triple glazed windows

      £450 – £1,600

      Ref. 1 · checked 2026-10-09

    • Sash windows

      £800 – £1,800

      Ref. 2 · checked 2026-10-09

    • Bay or bow windows

      £1,500 – £3,000

      Ref. 1 · checked 2026-10-09

    Schedule of rates

    Door prices at a glance

    Per door or set, supplied and fitted. A bi-fold is a set of leaves on a track, which is why it sits so far to the right of a single door.

    • Composite door

      £900 – £2,350

      Ref. 3 · checked 2026-10-09

    • uPVC door

      £700 – £1,400

      Ref. 4 · checked 2026-10-09

    • Aluminium door

      £1,400 – £2,800

      Ref. 4 · checked 2026-10-09

    • Bi-fold doors

      £3,000 – £7,500

      Ref. 4 · checked 2026-10-09

    • Sliding patio doors

      £1,500 – £4,000

      Ref. 4 · checked 2026-10-09

    • French doors

      £1,200 – £2,950

      Ref. 4 · checked 2026-10-09

    References

    Where these figures come from

    These are installer and comparison sites, not official statistics, and several have a commercial interest in the numbers they publish. We use them because no official dataset exists, and we would rather name the source than present a figure as though it were ours.

    1. [1] Costwise UK new windows cost guide checked 2026-10-09
    2. [2] Checkatrade double glazing cost guide checked 2026-10-09
    3. [3] Expertsure composite door cost guide checked 2026-10-09
    4. [4] MyJobQuote door installation cost guides checked 2026-10-09

    Variables

    What moves the price

    The same nine windows can be quoted a long way apart. Most of the gap is one of these.

    • How many at once

      Survey and delivery costs are shared, so a whole house is cheaper per window than one at a time.

    • Specification

      Profile quality, warm-edge spacers, argon fill, hardware and whether the doorset is PAS 24 tested all sit behind the headline number.

    • Access

      Upper floors, bay windows carrying load, and anything needing scaffolding add real cost.

    • Making good

      Ask whether the quote includes removing and disposing of the old frames, and plastering or trimming inside afterwards. This is the most common gap between two quotes.

    • Where you are

      London and the South East typically run above the rest of the UK for the same job.

    Cost questions

    How much does a full house of windows cost?
    For a typical three-bedroom semi with nine windows in uPVC, roughly £3,600 to £7,650 supplied and fitted. Doing them all at once is cheaper per window than replacing them one at a time, because the survey and delivery costs are shared.
    Why do quotes vary so much for the same job?
    Mostly profile quality, glass specification, hardware and whether the price includes removing and disposing of the old frames and making good inside. Two quotes that look far apart are often quoting different jobs, so compare the specifications rather than the totals.
    Should I pay a deposit?
    A deposit is normal, but it should be a modest proportion rather than most of the price, and it should be protected by an insurance-backed guarantee or by paying on a credit card. Be wary of anyone asking for most of the money before the work starts.
    Does a cheaper quote mean a worse job?
    Not necessarily, but it usually means a different specification. Ask what profile system, what glass unit, what hardware and what guarantee, and the gap between two prices normally explains itself.
    Are these prices a quote?
    No. They are published industry guide figures and we are an introducer, not an installer, so we are not the party who can price your job. Only a surveyor measuring your actual openings can give you a real price.