The average cost of a new window
is between £600 and £1,800
Pricing guides

How much do new windows cost?

There are lots of good reasons to get new windows. From reducing your home’s carbon emissions to spending less money on heating, there’s no shortage of benefits. But before getting started on any window installation project, it’s worth finding out how much it's going to cost, how long it’s likely to take and what you can do to keep some of the costs down. Keep reading and we’ll break down everything you need to know about new window costs. Please note, all prices given are estimates that are accurate as of 2024.

When it comes to home improvement projects, preparation is everything. Knowing all the details about your project before you get started is one of the best ways of keeping it on track and on budget. Moreover, knowing the ins and outs of the common costs involved will make it easier to spot any potential savings. So, when it comes to the cost of getting new windows installed, what should you be prepared for and what costs should you expect to come across? 


Average new window costs

Getting new windows installed is usually a straightforward process and this filters through to the quotes you will get. To learn more about some of the typical costs associated with new window fittings, take a look at the table below. Or keep reading to see an in-depth breakdown of the different costs further on. 

Type of new windowAverage price
uPVC casement window£1,200
Aluminium frame£1,500
Timber frame£1,800
Sash window£1,800
Tilt and turn window£1,500
Bay window£3,000


The above figures are rough indications of what you should expect to pay for some popular windows and frames. However, the final price will vary a lot depending on the size of the windows and how many need to be installed. To get a more accurate quote, you should speak to a window fitter.

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The cost varies for different types of new windows

There are a few different factors that affect how much it will cost you to install new windows. However, much of the price variation comes from deciding what type of windows and frames you want to be installed. For example, since 2002, all new windows sold must be at least double glazed, but you could also choose to install triple-glazed windows, which would increase your overall costs. 

And besides the type of glazing, you also need to think about the type of frame you want to install. From uPVC to aluminium, each of the different frame options can offer you a range of different benefits. Your window fitter can help you decide on the right frame for your particular needs. 

On top of these up-front costs, you’ll also need to bear in mind additional costs like labour. While hiring a tradesperson to install your windows might seem like a more expensive alternative to attempting it yourself, it’s important to remember that a professional window fitter can provide you with a number of advantages. From detailed knowledge of local building codes and practices to experience ensuring each new window is installed safely and securely, hiring a window fitter gives you the confidence and peace of mind that your installation won’t result in costly repair bills further down the line. 

Cost of double-glazed windows

Since 2002, any replacement windows need to comply with double-glazing standards. Double-glazed windows prevent heat transfer by using two panels to trap heat, thereby offering homes better insulation. This also leads to lower heating costs as less heat escapes through the windows. 

Any window replacement you’re planning on carrying out will need to comply with these rules. And while the exact cost of double-glazed windows will vary based on how many windows need fitting and their size, the average cost of double-glazed windows is around £250

Cost of triple-glazed windows


Triple-glazed windows follow a similar design to double-glazed windows, but add an extra pane of sealed glass and create another insulated chamber to offer even better insulation. As with double-glazed windows, prices can vary a lot. However, the average price for a triple-glazed window is usually between £700 and £2,200, making them a slightly more expensive option than double-glazed windows. 

Cost of scaffolding

Any specialist equipment needed to fit new windows is usually included in your window fitter’s quote. And while new windows won’t usually need too much specialist equipment, depending on the size of your house, scaffolding may be needed to provide easier access to your windows. As a general rule, the cost of hiring scaffolding is normally around £625 for a week. Most new window installations won’t take this long, so you can expect this cost to be less. 

Cost of uPVC windows

Unplasticised polyvinyl chloride (uPVC) windows are some of the most popular options on the market. Stylish and affordable, it’s no wonder uPVC windows are desirable to have installed. And uPVC is not just a lightweight material, it’s also sturdy and easy to maintain, making it ideal for a wide range of homes. 

uPVC windows are also compatible with a lot of different window types, including casement, sash and tilt and turn window designs. While some window types involve a more specialist installation and can therefore be a little more expensive, the average cost of a uPVC casement window will be around £1,200

How long does new window fitting take?

Window fittings are quick to complete, meaning a specialist window fitter could likely replace all the windows of a semi-detached property within a day. For replacing one window, one to two hours is normally enough. However, as always, it’s always best to get confirmation from the specialist you’re working with to find out how long it will take. Replacing new tilt and turn windows, for instance, may take slightly longer than a simple casement installation.

How to reduce new window costs

When it comes to home improvement projects, you may want to explore the different ways of keeping costs down. Here are some tips on how you can keep the cost of your new windows as low as possible.

  • Partial DIY: You may be able to do parts of your new window installation yourself. Aftercare, painting and decoration and maintenance are some easy ways of keeping your costs down. Moreover, they won’t involve altering the installation itself, making them an easy way of keeping costs low and reducing the risk of making any costly mistakes.
  • Search for different quotes: The single best way of getting good value on your project is to search for different quotes from different tradespeople. A lot of factors can impact your quote, from your location to how a tradesperson sources materials, so be sure to search around for the best options. 
  • Stick to your budget: If you’ve set out an initial budget at the beginning of the project, make sure to stick to it. There are many affordable window types and designs that look good and work well, so consider choosing the best value options and staying close to your budget. 


Should I replace all my windows at once?

Unless there’s an emergency, you don’t need to replace all of your windows at once. By spreading out the installations you are spreading the cost, however, it’s also equally true that you’re extending the disruption. New windows aren’t cheap, so it’s quite common for many households to spread the installation over a few months and in different stages. 

Do I need planning permission for my windows?

You don’t usually need planning permission to install new windows. But for homes in areas of outstanding beauty, or those owned by the local council, some exceptions do apply as any new windows you choose will need to maintain the same design and style as those around it. Speak to your local authority to find out whether you’ll need planning permission for your windows.

How should I prepare my home for new window installation?

Before getting started on installing new windows, you should take some time to clear the area around the window. Some mess and dust are inevitable when replacing windows, so this helps keep your items protected. Remove curtains and furniture where possible, and you could also lay down a mat to protect your carpet, although some tradespeople will provide this themselves. 

Your window installation checklist

To make sure you and your property are prepared for your new window installation, make sure to tick off the following steps to be sure that you’ve covered everything. 

  • Compare specialists: When comparing the different quotes of tradespeople suited for the job, use MyBuilder to compare their previous experience, qualifications and customer reviews. MyBuilder makes it easy to compare different professionals without clicking off to a different screen, and it’s one of the best ways of hiring the right window fitter for the job. 
  • Decide on materials: When speaking to a tradesperson about your new windows, it’s a good idea to have a rough idea of what material frame and window you want to go with. Based on your budget, your window installation specialist will be able to recommend the right option for you, but the final decision always has to be yours. 
  • Do your research: From materials to specialists in your area, being prepared is one of the best ways of helping your window installation run smoothly. Find out as much as you can about your options and speak to window installation specialists and you will be prepared for the project ahead. 

MyBuilder is the easiest way to find skilled and qualified window installation specialists near you. Simply post your job to the MyBuilder network for free and you’ll soon be connected to skilled professionals who can help. 

Get a free window fitters quote

We can help you meet professional window fitters near you to get real quotes today.

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