The first thing I do is to look for a house that I would live in and a neighborhood I would feel comfortable in. Keep in mind you may need to go their at night.
Step3
Next I prefer houses that are already rented out, it gives me an idea of the rents. Naturally, some realtors will always say that its under priced. don't believe it. Next I research rents with sites like craigslist, and other local sources.
Step4
finally, I take the rent and multiply it by 12 months to get the gross rent multiplier. This is simply how much rent should be collected each year. From that I multiply it by 5 and that tells me what I would like to pay for it. 5 is a bit hard to come by, I will go as high as 8. I only go to 8 if it's financed by the owner with little or no money down and the interest
rate
is 7% fixed for 5 or more years. Anything over 8 and I simply move on. Its simply a numbers game. When in doubt talk to a CPA not a realtor or mortgage person, these people only benefit if you buy it. Other factors should be considered as well, but that's where I start.