Here are the items you should include in a lease renewal agreement: the names of the parties involved (i.e. the landlord's name and the tenant's name or names), address of the rental property to which the lease agreement pertains, the start date and end date of the original lease, astatement that both parties agree to extend the lease, the duration of the extension (ex: 6 months, 12 months, etc.), the rental rate or any increases, astatement enforcing the continuity of the original lease terms, and signatures of both parties.