Final answer:
In Arizona, contractors must be licensed to perform work above a specified value, and a two-year warranty is imposed by law on completed work, which overrides any shorter warranties offered by builders.
Step-by-step explanation:
The Arizona Registrar of Contractors (ROC) mandates that contractors performing work valued over a certain amount must be licensed. This threshold is set to protect consumers and ensure that only qualified professionals undertake substantial construction or renovation projects. Regarding warranties on completed work, Arizona statutes impose a minimum two-year warranty. This statutory warranty supersedes any lesser period offered by builders, such as a one-year warranty, and serves to provide additional protection to the homeowner against defects in workmanship or materials.