Del. Code Ann. tit. 25, § 5514A
(a) Instead of paying all or part of a security deposit to a landlord under § 5514 of this title, a tenant may purchase a surety bond, the purpose of which shall be:
(e) Before a tenant purchases a surety bond instead of paying all or part of a security deposit, a surety shall disclose in writing to the tenant that:
(5) Even after a tenant purchases a surety bond, the tenant remains responsible for the following:
(j) If a landlord’s interest in the leased premises is sold or transferred, the new landlord shall accept the tenant’s surety bond and may not require: