One common complaint by tenants' rights advocates is that some Texas landlords and property managers would entice people into lease agreements by offering  20 Jul 2017 In these instances, lease addendums are a landlord's best friend. What is a Lease Addendum? The primary purpose of a lease addendum is to add specific conditions What to Do When Your Texas Tenant Doesn't Pay Rent. A Lease Amendment is used to modify an existing Lease Agreement between a tenant and landlord by adding or removing clauses, or changing existing