A lease amendment form allows parties to a lease set modifications to their agreement. This is a written instrument that lets them set new matters, add new terms, correct errors, or make updates to various parameters in the agreement that is already in effect - such as rental fees, change of policies, etc. Drafting a new contract may be tedious and take up a lot of resources such as paper documents just to state an amendment in the terms and conditions of the contract. Having a lease amendment form makes it legally effective to simply attach the document to the contract where changes are signed by parties admitting to the new changes on the terms.