Installing new windows is a significant investment in your home. There are a number of factors that can influence the cost, so understanding what is needed can help you budget.
Unique windows
As every installation is different, it can be hard to talk in general terms about the costs of windows. The cost of a uPVC casement window in 2025 is likely to be between £700 and £1,800; however, there are factors that can change this, such as installation complications or the size of the window.
The best way to find out about the cost is to get a quote from a reputable installer. Going online will enable you to see the options in your area and read the reviews. If you live in Cardiff, for example, a search for windows and doors Cardiff will give you results such as Choice Trade Frames.
Types of windows
If you don’t want a uPVC casement window, the type of window you choose will impact the cost. A sash window, for example, is often found on period properties and you will probably want to keep this style if replacing it to maintain the aesthetic. This is likely to cost about 50% more. Tilt and turn windows are popular as they can be opened for ventilation while remaining locked for security. These are likely to cost 25% more than a casement window. A bay window is built out from the walls of the house and has windows both front and side. These are the most expensive at around 100% more than a casement window and may require planning permission if they are not already part of your property.
Materials
In addition to being the cheapest, uPVC is thermally efficient and easy to maintain. Aluminium is about 25% more expensive than uPVC but is popular due to its durability and its sleek, more contemporary look. Timber is the most expensive at 50% more than uPVC but looks stunning and is particularly authentic for period properties. Timber windows can also add significant value to your property.
