Hey @Jenny Zhang,
As a landlord and property manager, background checks are some of the most straightforward and tricky things out there. There are plenty of people with shady backgrounds who are great tenants and shady tenants with great backgrounds. That being said, we take a holistic approach to background checks.
This means we definitely conduct formal background checks with credit scores and criminal histories but we also factor in their personality, their sincerity, their facebook account activity, and we go through references with a fine tooth comb. If everything in this category is great, we usually just follow up with their references casually.
But if we get red flags anywhere, then we google employers names and make sure the phone numbers match up independently of the application. We google landlord names and check property records to ensure the owner is the landlords name.
We also find that after we do our checks, when we ask the tenant questions, we try not to give out information that they didn't provide and see if they trip themselves up.
I know it sounds like a lot of work but over time, you get better at it. And as the saying goes, an ounce of prevention is worth a pound of cure.