I'm trying to decide between building an Accessory Dwelling Unit (ADU) on my existing property (secured permit) and investing in a rental property in a cheaper market.

If no, then maybe a duplex or something with a separate dwelling unit is the move. 

They are leased out.It is zoned R-2 which allows for Multifamily which is defined broadly in the Definitions sections of the General Plan as "Dwelling, Multi-Family - A building containing three (3) or more dwelling units.

Most ADUs are ground up and are cost prohibitive. you need to contract dwelling units under 1000 sq ft at $250 per square foot to make the numbers work as a builder in columbus. the cost of an adu and rezoning I'd pass on this one.

New York City allows members of the public to have roommates in both single-family homes and in apartments, provided that these roommates maintain what is known as a 'common household,' meaning they share the livable space of the dwelling unit," Under the NYC Administrative Code, no more than three unrelated roommates can occupy a dwelling unit and maintain a common household, which means you can take on one or two roommates.

Each dwelling unit shall be considered a single tenant for the purposes of this subsection.

So I have a question, I have a property that has a main dwelling and  that has a carriage house (ADU) in the back it was my first property ever bought I was severely underinsured on the carriage house.

To make it into legal accessory dwelling units, you would need to apply for the permit to do so.

Usually it's a policy for a rental dwelling and they may require specific riders.

Originally posted by Bill Gulley:By definition a single family dwelling is any attached residential unit containing one to four units.A single family dwelling is 1 dwelling unit. 2 or more is multi-family.