Why 2, 3, 4 plexes instead of SFRs?

[Stephen Masek]

I've noticed that some people like and want 2, 3 and 4 plexes, but never understood why. What do you think? I understand that there is just one roof and one exterior, but also that SFRs are much easier to sell, and can be sold one at a time. What are your perceptions or experiences about the difference between SFR tenants and apartment tenants, if any? Are you finding prices per unit on 2, 3 and 4 plexes which are significantly lower than those for similar single family houses? I've not yet found any such price difference.