What Do Window Fitters Charge in the UK?
A misted pane, a draught around the frame or a window that no longer locks properly can quickly turn into an urgent job. So, what do window fitters charge in the UK? For fitting work alone, many homeowners pay roughly £100 to £250 per standard window. A full replacement, including the new window, commonly starts around £500 per window and can rise well beyond £1,500 for large, premium or complex installations.
Those broad figures are useful for early budgeting, but the right price depends on what is being fitted, the condition of the opening and how much work is hidden behind the old frame. The quickest way to avoid surprises is to compare like-for-like written quotes before agreeing to the work.
What do window fitters charge for labour?
For a straightforward replacement where the new unit is ready to install and the opening is in good condition, labour may be priced per window or as a day rate. Typical labour-only costs are often in the £100 to £250 range per standard window. A fitter working by the day may charge around £200 to £400, although rates in London and other high-demand areas can be higher.
Small jobs do not always work out cheaply per window. Replacing one ground-floor casement window still involves travel, preparation, safe removal, sealing and clearing the site. Many firms therefore have a minimum call-out or half-day charge. If several windows need replacing at once, the labour cost per unit is usually lower because the team can work more efficiently.
Labour pricing should cover more than placing a frame in an opening. Ask whether the quote includes removing the old window, disposing of waste, fitting trims, sealing inside and outside, checking the opening sash or casement, and leaving the area tidy. A low initial figure can become less attractive if these essentials are billed separately.
Typical UK window replacement costs
When a quote includes supply and fitting, the window itself accounts for much of the total. Material, glazing, size, opening style, security hardware and finish all affect the price. The following ranges are a practical starting point for a standard-sized replacement window, supplied and fitted:
- uPVC casement window: approximately £500 to £900
- Aluminium window: approximately £800 to £1,400
- Timber window: approximately £900 to £1,800 or more
- Sash window: approximately £1,000 to £2,500 or more
These are guide prices rather than fixed rates. A small white uPVC window with standard double glazing sits at the more affordable end. A made-to-measure bay window, a coloured aluminium frame or a timber sash designed to suit a period property will cost considerably more.
Triple glazing can add to the upfront bill, too. It may be a sensible choice for certain exposed homes or where improving thermal and sound performance is a priority, but it is not automatically the best-value option for every property. A well-specified double-glazed unit and a careful installation can deliver a significant improvement over failing old windows.
What changes the fitter’s price?
The condition of the existing opening is one of the biggest variables. If the old frame comes out cleanly and the brickwork is sound, the job is relatively predictable. Rotten timber, damaged lintels, crumbling render or unexpected damp can add repair time and materials. A reputable fitter should explain the issue and get approval before carrying out non-routine work.
Access matters as well. Ground-floor windows with clear outside space are faster to replace than upper-storey windows above a conservatory, a narrow side passage or a busy pavement. Scaffolding, lifting equipment or traffic management can add hundreds of pounds. Flats may also involve building management rules, restricted working hours and additional access arrangements.
Size and design naturally affect cost. Fixed panes are generally simpler than opening windows, while tilt-and-turn units, large picture windows, bays and shaped frames require more precision. Toughened safety glass, acoustic glass, obscure bathroom glazing, integrated blinds and specialist locks can each increase the quote.
Location has an effect, but it should not be the only explanation for a wide price gap. Labour and operating costs are often higher in cities and the South East. Even so, two local quotes for the same specification can differ substantially. Comparing the details is more useful than comparing one headline number.
Is supply and fitting better than labour only?
For most homeowners, a supply-and-fit service is the simpler route. One company measures the opening, orders the correct product, installs it and remains responsible if something does not fit or arrive as specified. It is particularly helpful for replacement windows where accurate measuring is critical.
Labour-only fitting can work if you have already sourced the windows, perhaps for a renovation or a matching product. However, it comes with more responsibility. Check that the fitter is willing to install customer-supplied units, that the product meets current requirements, and that any manufacturer warranty remains valid after installation. If the window is measured incorrectly or arrives damaged, responsibility can be less clear.
A full quote should make it obvious whether VAT is included. Domestic energy-saving materials may qualify for a reduced VAT rate in some circumstances, but eligibility and the rules around supply and installation can be specific. Do not assume the rate – ask the contractor to show the VAT treatment clearly on the estimate.
What should a clear window fitting quote include?
A detailed quote makes it easier to protect your budget and compare professionals properly. It should describe the number, sizes and style of windows, frame material and colour, glazing specification, opening configuration, handles and any security features. It should also state whether the price includes survey, delivery, removal of old frames, waste disposal, trims, making good and VAT.
For replacement work in England and Wales, installation may need to comply with Building Regulations. Competent installers can often self-certify eligible work and provide the relevant certificate after completion. Where planning restrictions, conservation area rules or listed-building consent could apply, check the requirements before ordering. This is especially relevant for timber sash windows and properties with protected appearance requirements.
Also ask about the payment schedule. A reasonable deposit for made-to-measure products is common, but be wary of pressure to pay the full balance well before fitting. Keep a copy of the specification, the agreed finish and the warranty terms. These details matter if there is a delay, a damaged unit or a disagreement about what was included.
How to keep the project cost under control
Start by deciding what problem you need to solve. If the frame is sound, a failed double-glazed unit, broken hinge or worn handle may be repairable for far less than replacing the whole window. A repair professional can assess whether a targeted fix will restore security and performance.
If replacement is the right answer, get at least two or three quotes based on the same brief. Provide photos, approximate measurements, the number of windows and any access concerns. Ask each fitter to separate optional upgrades from the core price. That prevents a quote with premium glass or decorative hardware from looking directly comparable with a basic specification.
Avoid choosing on price alone. Poor fitting can create draughts, leaks, sticking sashes and premature seal failure, undermining the savings you expected from new glazing. Look for clear communication, realistic timings, an itemised scope and a professional who is prepared to answer practical questions without rushing you.
For busy property owners, finding and comparing local professionals can take longer than the job itself. 78+ Services helps simplify that first step by connecting you with local providers, so you can focus on the quote, the specification and the outcome rather than chasing contacts.
The best next move is simple: photograph the windows, write down the issues you have noticed and request comparable quotes. A fitter who can explain the work plainly before starting is far more likely to deliver a window that performs properly once the job is finished.
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