The property located at 5131 W Louisville returns good numbers. The rental income returns $875 for one side and $750 for the second unit. $19,500 per year. Rule should return your investment in 10 years ($195,000) for a business and up to 11 years ($214,500) for real-estate. In 2005 a comparative appraisal showed a value of $249,500. With the housing market in a slump $195,000 is a good value. As rents increase a repayment in less than 10 years is expected. When housing returns to a normal sales price the one that invests now will recover equity quicker.