Residential 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.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. Gather the original lease and enter the details into the lease amendment, including, the name(s) of the tenant(s) being added or removed from the agreement. A lease extension addendum is a legal document extending a lease between a landlord and a tenant. Read our guide to Nevada lease agreements in 2024. Streamline the leasing process with our downloadable free sample template. In a Nevada Lease Agreement, the parties involved typically include the rental owner, property management company, and the tenant. A lease addendum isn't a standalone document; it's a complementary piece of legal contract that modifies the existing lease agreement. All parties must sign a Nevada lease agreement whenever Nevada landlords rent out properties to tenants.