There is rarely an obligation upon the land owner to plant a hedge surrounding property there are some points of note however:

There may be a restrictive covenant requiring the planting of a hedge. Details of such a covenant would be found within the Title Register and Title Deeds

There may be a restrictive covenant prohibiting the planting of a hedge in an open plan community. Details of such a covenant would be found within the Title Register and Title Deeds

Relevant documents:

Title Register

Title Plan

Title Deeds

See Also:

What is a Restrictive Covenant

Hedge Maintenance

Hedge Ownership