The duplex had a selling contract in 2 days, must have been a good deal

I am a landlord/investor and here is are my rules. Thou shall only purchase 3/2/2 homes in up scale neighborhoods! Never would I purchase a property that I wouldn't live in. I will use a good contract with my tenants and they will be evaluated with a credit score and a debt to income ratio of no greater than 45%. In the past, I have owned duplexes and they tend to draw a lower calibur client and they do not appreciate as well as a single family home. Being a landlord can be the best or worst title you will ever be given so do your home work and determine what route is best for you. Best of luck!