For each postcode district we publish the local sales evidence from HM Land Registry, the share of its postcodes inside Green Belt, protected landscape, conservation areas and Article 4 directions, and the council that decides planning there. Computed from open-data records at district level.
London landowners: see the borough constraint pages and sell-land guides for each of the 33 boroughs.
Draw your boundary and an architect checks it. Free, no obligation.
Check my land free