Government guidance on Historic Buildings and Conservation Areas
(PPG15) was introduced in 1994. It lays out government policies for the identification and protection of historic buildings, conservation areas, and other elements of the historic environment. It explains the role of the planning system in their protection.
Jenny routinely consults planning proposals (for the districts they cover) which involve alteration of listed and unlisted buildings. Advice is given on recording elements of an historic building and not on use of materials, design etc. Each local authority employs a Conservation Officer or Consultant who advises on these details.