The following pages describe what the law requires of both landlords and tenants in a typical rental agreement. A lease addendum is a separate legal document that allows a landlord to add additional information or make changes to a lease agreement.When compiling the legal paperwork to add a tenant to a lease, you can create an addendum to the existing lease or create a new lease agreement. In an addendum to a lease, you will need to add the dates, names and addresses of all parties involved in the original lease agreement. Attach a copy of each additional agreement to each copy of the Lease. In this guide, we'll walk you through the ins and outs of creating a bulletproof addendum to lease agreements that ensures both parties are on the same page. A lease addendum isn't a standalone document; it's a complementary piece of legal contract that modifies the existing lease agreement. Edit, sign, and share Option to Purchase Addendum to Residential Lease - Lease or Rent to Own - Minnesota online. Our fill-in-the-blank tool simplifies customizing and adjusting your lease agreement on your own, ensuring compliance with your state's specific laws. Minnesota lease agreements must contain a few disclosures and addendums when they are completed and signed.