The tenant is entitled to a written agreement by law if requested by the lessor (or his representative) within 28 days of the start of the rental. The Housing Act 1988 dramatically changed the laws that regulated the rental market in three key areas: rent regulation, inheritance and property guarantee. Let`s look at them independently of one another. 8. A guaranteed lease agreement, which is para. 29.In§ 69A (land subject to a housing management agreement) for. The main difference between the two types of rental is that, under an AST, the lessor has the right to repossess the property at any time after the expiry of the term of the rental agreement (provided that it is terminated as it should be). . . .