Browse the listing inventory of any real estate office and you should expect to see some investment properties listed for sale by a residential real estate agent. That is, it shows how much cash flow is generated to make the mortgage payment as a percent of sale price. Also, you’ll never miss a bargain if you filter listings based on house price drops in the past six months. The first is to put it on the market with an agent that you have thoroughly interviewed by checking out references, current listings and sales and then hope that an approved buyer …