Overall, a housing investment is more like buying a small business than it is like a security investment. In fact, it is buying a small business; the business is being your own landlord. Being a landlord is more likely to be a profitable venture if you have reliable renters who you can trust. As a landlord, you’re the best renter you could ever want, which makes being your own landlord less risky than being someone elses landlord. This is because being your own landlord solves the principal agent problem inherent in the rental relationship; the owner/renter interests are exactly aligned.