Del. Code tit. 25, § 6704

Grantees of reversions and remainders in any lands, tenements or hereditaments let to lease, and their heirs, executors, administrators or assigns, shall have the same remedies, by entry or action, or otherwise, against the lessees, their executors, administrators or assigns, for any waste done, or for the nonperformance of any condition, covenant or contract contained in the lease or demise, as the grantors could have.