Here is a comprehensive guide about the standard forms of contract in construction in Arizona. We have put together a list of ten(10) key contractual provisions based on our 25 years of experience dealing with construction contracts.Established in 1931, the Registrar of Contractors (AZ ROC) licenses and regulates over 47,000 residential and commercial contractors. Contractors engaging in taxable construction projects or activities are required to obtain a TPT license. In all contracts, Arizona law requires the contractor to include their license information.