If you look at the one mile income radius and you see median household income at 45k, then take 30% of that or $13,500. 

Owner occupied united increased by 8.4%"Still, although the overall share of households that rented decreased, the number of rented units increased by over a million units (43.3 million to 44.6 million)."

Just make sure you use a very honest agent that doesn't sugar coat anything and check the crime statistics and household income.

I’ve seen cases where multiple tenants in a household had prior evictions from different addresses, taking turns as the primary leaseholder to avoid detection.

ALL of my major problem tenants happened to have had a average (adults in the household) score below 625. 

Real estate investing has been a passion of mine for time with my mother also having invested early on where I likely have gotten the love and desire to follow similar foot steps.I have taken last 6 months to educate myself and currently own a single family home as primary residence and would like to expand to multi family properties (2-4 units) for additional stream of income, not to mention potential tax benefits for long-term investing.Based on current living situation, I have a fair amount of equity established in my primary residency along with having enough cash to either pay off house completely or use towards investing in a multi family property.Given that I'm the sole source of income for our household with my wife being the home maker for our two kids under 2, trying to weigh out risks with getting started now or perhaps waiting. 

This video is a great start and includes a lot of sample images (good and bad).

I have purchased the following books:ABCs of Buying Rental Property The ABCs of Property Management The ABCs of Real Estate Investing The Advanced Guide to Real Estate InvestingThe Book on Investing in Real Estate wit...

I think what you're really asking is how to identify good value areas where rents may be trending upward but the prices still remain relatively lower.An important metric is tenant household income to rent ratio.

They have median household incomes of 52k and 55k respectively.