Once you have worked out what budget you have available, you can find out about plots of land for sale which may be suitable for self build from a number of sources. There are several websites which allow you to search for details of plots for sale, although for some of these you need to pay a fee for membership. A range of sites are available, but here are some examples of plot search sites:
• Buildstore Plotsearch at buildstore.co.uk
• UK Land Directory Ltd at uklanddirectory.org.uk/