This tool has been developed alongside NaCSBA - The National Custom and Self Build Association. The tool aims to help self builders, local authorities, and consultants understand the demand and supply for custom and self-build homes in their area. The data is updated yearly and is published by central government here - Self-build and custom housebuilding data. NaCSBA has developed a Darft Standard Methodology for assessing demand for custom and self-build homes. The white paper for this methodology can be downloaded here - NaCSBA Standard Methodology White Paper. The data below has been calculated using this methodology. For questions about the data, please email info@livedin.co.uk or media@nacsba.org.uk.