Broxbourne's Council's Brownfield Register is available to download in excel format here. A cover sheet explaining the terms used in the register is available here.
Brownfield land is land that has been previously developed. It can include land with buildings as well as cleared sites. The National Planning Policy Framework (NPPF) defines previously developed land as "Land which is or was occupied by a permanent structure, including curtilage of the developed land (although it should not be assumed that the whole of the curtilage should be developed) and any associated fixed infrastructure. This excludes: land that is or has been occupied by agricultural or forestry buildings; land that has been developed for minerals extraction or waste disposal by landfill purposes where provision for restoration has been made through development control procedures; land in built-up areas such as private residential gardens, parks, recreation grounds and allotments; and land that was previously-developed but where the remains of the permanent structure or fixed surface structure have blended into the landscape in the process of time".
The Housing and Planning Act (2016) Part 6 section 151 states that "the Secretary of State may make regulations requiring a local planning authority in England to prepare and maintain and publish a register of land within (or partly within) the authority's area". The Town and Country Planning (Brownfield Land Register) Regulations 2017, which came into force on 16 April 2017, requires local planning authorities to prepare and maintain a register of previously developed land that is suitable for residential development. Part 1 of the brownfield register is a comprehensive list of all brownfield sites in a local authority areas that are suitable for housing, irrespective of their planning status. Part 2 of the brownfield register only includes sites that have been granted permission in principle. At the present time Broxbourne Council’s Brownfield Register does not contain and Part 2 sites.