People who believe they would not qualify to rent a home as themselves have an incentive to pretend they are someone else in order to qualify for a lease. This could include people with poor credit, convicted felons and other sorts of criminals, and people with prior evictions, repossessions, and foreclosures on their personal record. After trying, and failing, to find a place to rent a few times, they may pretend to be someone else to make the whole process easier. Because of this, you should always ask for ID when screening tenants. Every time. Without fail.