4. Where are the new homes built? Green belt land Greenfield land Brownfield sites Greenfield land is land that has never been built on before. It may have always been farmland, or woodland. Greenbelt land is land that has certain planning restrictions. You are not allowed to build on the land unless it is for recreation Brownfield sites are places that have been built on before but are no longer used, for example old factories. These are either converted into houses, or knocked down for housing to be built