National Space Standards assist with developers to fully understand requirements of development. This creates a level playing field when it comes to land values to avoid the possibility of sites becoming unviable. Building Regulations should be the driving force for accessible and adaptable housing. This is because amendments to BR wouldn't mean that planning policy had caught up. Turning to older persons housing, this should be judged on a site by site basis. In some circumstances it may not be appropriate to require elderly housing to be provided.