A covenant is a contractual agreement - in the most common sense in property it is used to restrict one party by another. Covenants operate largely by successor in title (i.e. each subsequent owner of the property is bound or benefited) and contrary to common belief do not become less valid as time passes. A barrister is generally used to comment on the enforceability of a covenant.
Please Refer to the Title Register and Title Deeds for details of covenants.