The Town and Country Planning (Brownfield Land Register) Regulations 2017 requires local authorities to prepare and maintain registers of previously developed (brownfield) land that is suitable for residential development. Registers will be in two parts: Part 1 will comprise all brownfield sites appropriate for residential development. For the City of London the relevant data is available to be accessed in the following ways: • The City of London Interactive Mapping under the theme Planning – Development. Load the Operational Layer Brownfield Register. • Spatial data is available to be accessed via the City of London pages on data.gov.uk. • Textual data available in csv format. City of London Brownfield Register in csv format September 2017 Part 2 is those sites granted permission in principle. In practice there are currently no such sites in the City of London and thus there is no data file made available. Data will be updated twice a year in sequence with the City of London Development Schedules.Updated April 2023.