Property covenants may exist in a lease (ie, covenants between landlord and tenant or other parties to the lease) or in respect of freehold land. If it is a leasehold covenant, the question is whether there has been merger of the lease interest with the superior interest. However, the query refers to a deed of release, not a deed of variation, so we assume that the question relates to a freehold covenant. We further assume that all the formalities such as annexation and notice are met, and that there are no unusual features, limits or powers of release