preservation order
noun /ˌprezəˈveɪʃn ɔːdə(r)/
/ˌprezərˈveɪʃn ɔːrdər/
- (in the UK) a document that makes it illegal to change or destroy a building, a tree or part of the countryside, because of its beauty or historical interest
- The council has placed a preservation order on the building.