The Town and Country Planning (Brownfield Land Register) Regulations 2017
These Regulations place a duty on each local planning authority responsible for determining applications for housing development to prepare, maintain and publish a register of previously developed land (commonly known as “brownfield land”) which is suitable for residential development. “Previously developed land” has the same meaning as in the National Planning Policy Framework, as it has effect from time to time. A copy of that document may be inspected at the Department for Communities and Local Government, Fry Building, 2 Marsham Street, London, SW1P 4DF.