In short, if there's 6 or more adults living at a single family home, you're supposed to get a permit. 

I want to care for unwed single mothers and pay their childcare costs. 

We effectively turned our single family home into a duplex.

I have a single family home in Tooele, Utah. 

Seems like driving around there is lots of big stuff and lots of single family or dueplex/triplex/4plex stuff. 

Here were their reasons:Applicant 1 single woman separating from BF loves apartment, two days later emails to say she is going further north to be close to family. 

I think investors overpaid...some bought from seminars local realtors would take to California to sell brand new golf course community homes or old apartments in excellent school areas “renovated” into condos and sold for more than the single family 3-2-2s down the street.

You can also expand on what type of properties are you interested in (single family homes, small multi-family properties, etc.).

OR single family homes that have the same amount of bedrooms & bathrooms one unit has?

I'm currently under contract for a set of 3 duplexes on a single lot zoned commercially.