Much like stocks, real estate investing allows for one to be successful through a number of different strategies. One of the most popular ways to invest in real estate is to own a collection of rental properties. Properties that only have one residential rental unit are commonly referred to as single-family properties while apartment complexes that have multiple rental units are known as multi-family properties. There are many advantages to owning multi-family real estate. These include access to easier and better financing opportunities, the ability to quickly grow one's rental property portfolio and the luxury of hiring a property manager.