Covenants restricting the use of land imposed by a seller may be divided into three classes: • covenants imposed for the seller’s own personal benefit • covenants imposed as owner of other land, of which the land sold formed a part, and intended to protect or benefit the unsold land • covenants on a sale of land to various buyers who, with their respective successors in title, are intended mutually to enjoy the benefit of, and be bound by, the covenants The first category of covenants is only enforceable by the seller, unless expressly assigned to a third party. For example, in Cosmichome, a covenant which required property to be solely occupied by the buyer for a specified purpose, and which was subject to removal in return for an overage payment, was held not to be intended to protect or benefit the seller’s land but to be purely personal to the seller (since the seller’s motivation for imposing the covenant was clearly financial rather than proprietary). Covenants in the second category are said to