I always advise my clients to get a home inspection as soon as their offer has been accepted. New construction is no exception. A good home inspection can help you make an educated decision on whether to move forward with the purchase once your inspection period is over.
Since termites are prominent in Arizona, you may want to also consider a termite inspection. The Structural Pest Control Commission (SPCC) regulates these inspectors. They can provide you with information regarding past termite treatments on a property. Additional information may be obtained at the Structural Pest Control Commission website at http://www.sb.state.az.us/