If you have a mortgage then taking out building insurance will be part of the terms and conditions of your mortgage offer and is a necessary step in completing your mortgage.
Buildings Insurance covers the structure of the property and permanent fixtures and fittings, such as baths, toilets, fitted kitchens, bedroom cupboards, decor, including wallpaper. Building policies also usually include garages, greenhouses and garden sheds at your home.
This will be tailored to suit the type of property and type of fixtures & fittings you possess.