a lease amendment is an agreement between a tenant and land owner when they both agree on some changes on the existing lease contract. amendment to a rental agreement could be based on a number of parameters- such as maintenance fees, rental fee, allowance of pet in the rented property, lease length extension and so on. this form is to be used when both the tenant and the landlord want to increase the length of the original lease time period. if there is a situation demanding any sort of amendment or changes to meyer najem public lease, it has to be made official through a commercial lease amendment agreement form. if a member of us house of representatives needs to make some amendments to the existing district office rental contract, he and his landlord would have to sign a district office lease amendment form. the basics of a lease amendment form are very simple.