Multifamily properties encompass residential units that consist of more than one dwelling. They come in various forms, such as duplexes, townhouses, and condominiums, offering diverse options for investors. It's worth noting that even properties where the owner resides in one unit while renting out the others are considered multifamily properties. For instance, living in one half of a duplex while your friend occupies the other also qualifies as residing in an apartment complex.