There are exceptions, like what was mentioned by @Nathan Gesner, if you are an employee of the property owners, and you exclusively manage their properties, if you're a resident manager, living in the building that is being managed, or if you are someone who manages properties owned by a single entity and have a direct ownership interest in it.

Small towns may rely too much on a single business or market segment.

Quote from @Taylor Davila: What is the average cost of converting a single family home into a duplex? 

It's just a single family home so the rents don't effect the appraised value.

@Sam Sarno Are you looking at multifamily or single family home?

I have a single family home with 130k equity renting steady as a medium term furnished rental cash flowing an honest $900/mo. 

Just wondering, are you only looking at single family properties or considering multi-family too?

Do you prefer single families?

They are not calculating, but also very deceptive that now when I look back, the whole three days training is a step by step scripted the process of selling, every single second of it.- I went to a top college and have a very stable career with great income.

And why is it that every single home - whether its a rental cabin or primary residence - doesn't have to have a sprinkler system?