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Window Prices

Searching for average or example prices for windows online can be very difficult, which is why we compiled all the information we could find from experts who know their stuff. Find the best information about window prices in our comprehensive article.

Have you been scouring the web to find the best average window prices? You’re in the right spot. Here we aim to provide you here with average prices for the most common window styles, materials, glazing and sizes. Our examples will give you a general idea – though for the most accurate price possible you will have to compare quotes from local providers. Here is the structure of the article:

  • Style Price Guide
  • Material Price Guide
  • Glazing Price Guide
  • Size Price Guide

Style Price Guide

We have organised the average price for different window styles in the following tables, and at the end you will find some example prices. As a general rule, casement windows tend to be cheaper than sash windows which are the two most common window styles. For more details on different window styles and why one might be better for you over another, see our dedicated article on window styles.

How much do casement windows cost?

The following table explains casement window prices with one opener cost in different sizes and materials.

Casement Window Prices (incl. installation costs + VAT):

Window materialWindow size (mm)Price range
uPVC1000 x 500£200 – £375
1000 x 1000£300 – £700
1200 x 1200£350 – £900
Wooden600 x 900£600 – £970
300 x 1200£1,250 – £1,400
1200 x 1200£1,370 – £1,500
Aluminium600 x 900£540 – £680
900 x 1200£650 – £800
1200 x 1200£770 – £960


  • To get a uPVC casement window installed in your home, you can expect to pay between £200 and £900 per window, depending on installation costs, size and specifications. For more details see our dedicated casement window article.

How much do sash windows cost?

Here we detail sash window prices in different materials.

Window Tyle (Sash)Average cost per window including materials,
installation and VAT
uPVC Windows£700 - £1,100
Wooden Windows£1,100 - £1,900
Aluminium Windows£1,200 - £1,500

How much do casement windows cost vs sash windows?

In this table we compare casement to sash window prices in different materials.

Casement Windows vs Sash Windows (incl. installation + VAT)

Material / Window TypeCasementSash
uPVC£150 - £900£730 - £1,100
Wooden£700 - £1,500
£1,100 - £1,900
Aluminium£540 - £960£1,200 - £1,500


  • Sash windows can cost you anywhere from £480 to £1,000 per window for installation plus materials, and getting this style throughout a 4 bedroom house would cost between £14,000 and £18,000. See our sash windows article for more details.
  • For a fixed uPVC window, you will pay £150 – £275 per window for a white finish, and between £175 – £300 for a woodgrain finish.

How much do bay windows cost?

For more information about bay windows, you can read our dedicated article about them by clicking on the link! Here we give some prices in different finishes and according to how many panels the bay windows have.

Bay Window Prices (incl. installation + VAT)

3 Panels4 Panels5 Panels
White uPVC£1,050 – £1,350£1,400 – £1,700£1,850 – £2,200
£1,150 – £1,475£1,525 – £1,900£1,900 – £2,700


  • The price of bay windows depends on the number of panels and material used, but you will generally pay over £1,000 and up to £2,300 excluding labour costs. For more information on costs, check our dedicated bay windows article.
  • If you are looking to install double-glazed 5-panel bay windows, it will cost anywhere from £1,300 to £2,600 depending on the size of your home, excluding labour costs.
  • If you would like to install 3 units of bay windows throughout your house with 5 panels each, double glazed, the cost will range anywhere from £4,000 to £8,000, again depending on the size and quality of the windows.

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Material Price Guide

For a breakdown of the different window materials, see our articles about uPVC windows, wooden windows and aluminium windows. Generally uPVC are cheapest, followed by wood and then aluminium. uPVC do wear out a little bit more quickly than the alternatives, and wood requires the maintenance that the others do not. Aluminium windows are sleek, modern and low maintenance but are more expensive than uPVC and wood windows.

How much do uPVC windows cost?

This table offers examples of how much uPVC windows cost in different types of home, according to the amount of bedrooms, windows and in the two most common styles (casement and sash).

Cost of uPVC Windows (materials + installation)

Type of homeNumber of BedroomsWindows neededExpected cost of Casement style uPVC WindowsExpected cost of Sash style uPVC Windows
Flat24 windows£1,450 - £1,700£2,400 - £3,200
Terraced25 windows£1,800 - £2,250£3,000 - £4,350
Semi-detached27 windows£2,500 - £2,800£3,700 - £5,200
Semi-detached39 windows£3,200 - £3,500£4,400 - £6,600
Detached312 windows£4,200 - £4,700£6,200 - £7,550
Detached415 windows£5,300 - £5,800£7,200 - £9,400

How much does one uPVC window cost?

This table shows how much one uPVC window would cost in different styles and sizes.

Individual uPVC Window Prices (incl. VAT)

Casement uPVC WindowSash uPVC Window
600 x 900£290£580
1200 x 1200£375£720
1200 x 1800£540£935

How much does a wooden window cost?

The following table shows how much you can expect to pay for one wooden window without installation or special glazing in different styles and sizes.

Dimensions (mm) Casement Wooden Window + VATSash Wooden Window + VAT
600 x 900£875£1,300
900 x 1200 £1,500£1,900

How much do double glazed wooden windows cost?

This comprehensive table shows how much wooden windows prices will amount to. This includes installation and is organised according to home type, number of bedrooms, number of windows and window styles.

Cost of Wooden Windows (material + installation)

Type of homeNumber of BedroomsWindows neededExpected cost of Casement style Wooden WindowsExpected cost of Sash style Wooden Windows
Flat24 windows£2,400 - £2,800£4,100 - £5,500
Terraced25 windows£2,800 – £3,050£5,150 - £5,700
Semi-detached27 windows£4,200 - £4,500£6,500 - £8,000
Semi-detached39 windows£5,500 - £6,200£7,700 - £11,500
Detached312 windows£7,850 - £8,650£9,500 – £13,600
Detached415 windows£9,350 - £10,100£12,300 - £16,000


  • For instance, you have four single pane wooden casement windows that you want to replace to improve the comfort and energy consumption of your house. You can decide to maintain the aesthetics of your house by choosing on a set of wooden replacement windows for an average total cost of £3,000.
  • Alternatively you can save money and go for the cheaper uPVC replacement windows that would have an average total cost of £1,800. These estimates are based on the size of an average window and installation costs of various window companies, so the actual costs for your needs may vary.

How much do aluminium windows cost?

This table shows how much it would cost to have aluminium windows installed in different home types, number of bedrooms and number of windows in a common window style – casement.

Cost of Aluminium Windows (materials + installation)

Type of homeNumber of BedroomsWindows neededExpected cost of Casement style Aluminium Windows
Flat24 windows£2,400 - £2,800
Terraced25 windows£2,800 – £3,050
Semi-detached27 windows£4,200 - £4,500
Semi-detached39 windows£5,500 - £6,200
Detached312 windows£7,850 - £8,650
Detached415 windows£9,350 - £10,100

*Sash aluminium windows are uncommon and we could not find average price points for these.

How much do aluminium windows cost in casement or sash?

This table helps to compare casement and sash aluminium window prices in different sizes excluding installation costs.

Dimensions (mm)Casement Aluminium Window + VATSash Aluminium Window + VAT
600 x 900 £540 - £680
£700 - £1,200
900 x 1200 £655 - £850From £1,200


  • If your home has 4 windows that need replacing, you can expect to pay around £2,620 for double glazed aluminium windows, whereas for a 10 window home, you will pay an average of £10,350.

Glazing Price Guide

The type of glass and glazing you choose will have a significant impact on the final window prices. Click on our link for the dedicated window glass article for more information. Alternatively, you can read more about double glazed windows and triple glazed windows.

What does double glazed uPVC cost vs triple glazed uPVC?

This table compares the price of double glazing with the price of triple glazing when buying standard uPVC windows. This does not take into account size, style, installation costs or VAT.

uPVC Windows

MaterialDouble glazing costTriple glazing cost
White uVPC£320 - £380£410 - £500
Woodgrain uPVC£500 - £600£600 - £680

How much does triple glazing cost?

This table shows how much triple glazing would cost to be installed in different types of home with various numbers of windows – this does not include installation costs or VAT.

Triple Glazing Cost

Type of homeNumber of windowsAverage cost
2 bedroom flat4£2,000
2 bedroom terrace5£2,500
Semi-detached7£3,400 - £4,400
Detached12-15£6,000 - £7,300

How much do different glass types cost?

You will find below the range of prices we found for a white uPVC 900x1200mm double glazed top hung over fixed casement window:

Glass typePrice range: Supply only
Standard£140 - £150
Laminated£170 - £270
Toughened£160 - £250
Glass typePrice range: Installation + VAT
Standard£280 - £450
Laminated£300 - £470
Toughened£430 - £480


  • If you are looking for special acoustic protection glass, you can generally add around £90 to the price of your window. Other types of glass such as mirrored, self-cleaning and other special coated glass will come at different costs. This depends on your window provider and their supplier. For such special requirements, speaking to a professional is the best course of action.
  • We estimate that you will have to pay £35 more for a window with toughened glass. If you require laminated glass, the final price of your window will increase by £50 relative to the price of a window with standard A-rated glass.
  • A specialist from Caddy Windows in Bristol told us that they do not charge extra for different glass types. However, a casement window as described above would cost £364 for installation excluding VAT and £437 including VAT.

Size Price Guide

Window prices will also depend on the size of the window you need. Of course, the larger the window the more expensive it could be. The two tables below explain how much two common window sizes cost in different styles and materials.

How much does a 600 x 900mm window cost?

600 x 900 Window Prices (incl. installation + VAT)

Framing material / Window styleSashCasement
Wood£1,450 – £1,570£850 – £900
uPVC£480 – £690£250 – £340
Aluminium≅ £1,400£550 – £800

How much does a 1200 x 1200mm window cost?

1200 x 1200 Window Prices (incl. installation)

Framing material / Window styleSashCasement
Wood£1,500 – £1,800£850 – £970
uPVC£1,600 – £1,800£840 – £690
AluminiumData unavailable£770 – £1,000

The ultimate price guide: tailored to your needs

At the end of the day, only a quote from a local company will be able to provide an accurate idea of what you will spend on windows. Through our online quote request form, you will get up to 4 quotes. This way you can compare and choose the best company based on your requirements. You are not obligated to buy, so why not ask the question and get the most accurate information? Take a couple of minutes and you’ll save up to 40% – that adds up when you’re looking to spend thousands!