The 2017 Regulations introduced the requirement for all local planning authorities in England to prepare, maintain and publish registers of previously developed land within their area that they consider appropriate for residential development (brownfield land registers). The 2017 Regulations set out in detail the steps that local planning authorities are required to follow in preparing and publishing their brownfield land registers. Brownfield land registers will ensure that standardised information and data about brownfield land that is suitable and available for residential development is kept up-to-date and made publicly available. This will provide certainty for local authorities, developers and communities and encourage investment on brownfield land. Registers will also enable the aggregation of data on brownfield land that is suitable for housing, including progress being made on getting planning permissions in place. Brownfield land registers are also a vehicle for granting permission in principle on suitable sites helping to increase the number of planning permissions for new homes. DCLG has published National Planning Practice Guidance on GOV.UK in relation to brownfield land registers and permission in principle which should be read alongside this document. This dataset was first published December 2017 and will be updated Annually.Last update January 2023