I always start with Google. It's free, it's easy and it's usually where the story starts to unravel. Here are a couple examples:
* Googled the landlord phone number and found a recent craigslist ad selling some ratty speakers. The name in the ad did not match and the ad looked like it was written by a crackhead. APPLICATION REJECTED.
*Googled the landlord name and found that the "landlord" was a secretary at the construction company the applicant said he owned. Really? This girl is "your" secretary and you're renting a house from HER? Give me a break! APPLICATION REJECTED.
*Googled an applicants stated address and found an old rental ad for the property. I called the number from the ad and spoke with the real property manager who stated she was in fact the tenant, but she was very behind in her rent...they were considering eviction. APPLICATION REJECTED.
*Looked at property records and the name recorded did not match the landlord name given on the application. I called the number and spoke to someone who had no clue about the property. After about 5 minutes of stumbling and fumbling through answering my questions, he was able to come up with a story about his Aunt who lives out of state and owns the home and lets him manage the property. He said he'd have her give me a call. I said...well, I know the name of the property owner, can you tell me the name of your aunt? He hung up on me. APPLICATION REJECTED...bonus points awarded for creativity.
p.s. Silence is key. I'm never afraid to let a little silence into the phone call. A liar will be so uncomfortable with the silence, they'll almost always say something stupid and give themselves away.
p.s.s I did actually call every single one of these numbers to verify what I already knew. Then I scan all the applications into my computer and add a text box at the bottom stating why the application was denied. Gotta cover my backside!
p.s.s.st (lol) I notify applicants by email if their application was rejected. I have a standard message...I just change the name and the reason. I never reply to their replies and I never take future phone calls from them. There's nothing else to be said. Your application was denied for the reason stated and you should just keep it movin'. I know I will. :)