uPVC Bay and Bow Windows

A bay window is a window that projects outward from the main walls of a building, forming a small alcove or bay inside the room. This design expands interior space, and often creates a cosy nook for seating.

A bow window is a curved window structure that extends outward from a building’s exterior wall, creating a rounded appearance. Unlike a bay window, which usually has three panels with sharp angles, a bow window typically consists of four or more connected window panels that form a gentle arc.

In many cases, you do not need planning permission to install a bay window if it falls under permitted development rights, meaning the extension meets specific size and design limits set by your local authority. However, permission may be required if the property is listed, located in a conservation area, or if the bay window significantly alters the building’s exterior. It’s always best to check with your local planning department to confirm the rules that apply to your property.

The cost of bow windows depends mainly on factors like the size of the window. Larger windows with more panels will generally cost more, while smaller, simpler designs tend to be cheaper.