Restrictive covenants are most commonly applied when a developer subdivides land for sale and wishes to apply some restrictions on the use and development of the lots to benefit or protect other land.
A covenant that limits the use and development of a lot to a single house is a common type of restrictive covenant. Covenants that restrict the type of building materials that can be used for new buildings and fences are also common.
A registered restrictive covenant is a restrictive covenant that is recorded on the certificate of title for the burdened land.
Source Restrictive Covenants by the State of Victoria