An Arizona Contractor's Lien Waiver is a legal document that protects contractors from lien claims against their construction projects. It is used to waive any potential lien claims against a contractor's work or materials provided to a job site. There are two types of Arizona Contractor's Lien Waiver: a Conditional Waiver and Release Upon Payment and an Unconditional Waiver and Release Upon Payment. The Conditional Waiver and Release Upon Payment is used when payment has not yet been made. It is an agreement between a contractor and a property owner or general contractor that the contractor will not place a lien on the property when payment is received. The Unconditional Waiver and Release Upon Payment is used when payment has already been made. It is an agreement between a contractor and a property owner or general contractor that the contractor will not place, or will release, any lien on the property. Both types of Arizona Contractor's Lien Waiver are important documents that protect contractors from lien claims against their projects. They are legally binding agreements and should be signed by all parties involved in the project.