When buying a rental in metro Phoenix, ensure the numbers work with real rent and costs. Set clear rent expectations, include all expenses like mortgage, taxes, insurance, HOA, and maintenance reserves. Use conservative rent comps and factor in vacancy and concessions. Check insurance, HOA rules, and tax reassessment. Understand neighborhood demand and match financing to your investment plan. Inspect for durability, plan management, and confirm costs before committing. Consistent evaluation reduces risk.