Should I buy a house before I move for a new job or rent first?

This depends on how certain your job and income are, how well you know the area, and your financial readiness. Buying before moving gives you immediate stability, potential tax benefits, and the ability to build equity, but you risk choosing the wrong neighborhood or finding the commute difficult. Renting first lets you learn the area, confirm your job is a good fit, and shop for a home without time pressure, but you'll pay rent instead of building equity and may face a second move. If your job is secure and you've researched neighborhoods thoroughly, buying can work. If there's uncertainty or you're unfamiliar with Phoenix, renting first reduces risk.