Owning rental property seems like an easy way to generate extra income. But it’s actually not all that easy.

Nevertheless, the number of people buying second or third properties as investments has grown tremendously, according to the National Association of Realtors. In fact, the group’s recent survey found that 36% of home sales in 2006 were second homes and 35% of current investment-property owners plan to buy another property in the next two years. Since 46% of those questioned by NAR said they bought the investment property for the rental income, it behooves landlords and property managers to be scrupulous in searching for good tenants.

Landlords/property managers who take shortcuts when screening potential tenants, who skimp on insuring the property or who fail to outline everything in a detailed, written lease can end up with unpleasant and, yes, costly surprises. But there is one shortcut neophyte landlords can take: They can listen to the pros so they won’t have to learn lessons the hard, expensive way.

Do your own due diligence: A case study
Take, for instance, the tenant who so looked good on paper, with his attractive credit report and handsome deposit check. Too bad the paper he looked good on was bogus.

Apparently, this seemingly perfect tenant doctored his credit report, giving himself a stellar rating. Then the guy bounced his hefty $4,000 deposit check. Pasadena, Calif., landlord Payman Emamian blames his real-estate partner for renting to this con man. Not only were they out money, but the lying tenant damaged the investors’ two luxury Hollywood town houses. (The guy claimed he’d work in one and live in the other.)

After three months, Emamian successfully evicted the man, but not before he ran up a $20,000 tab for back rent, legal fees and repairs.