But what if some units have more than one room in them and I rent out each room two separate tenants?

If you look outside city limits make sure you do some research on the septic system, your lot size, if you even have room for a backup field , the ability to replace septic is becoming a real issue statewide. 

In the past people had "laundry rooms" and it was a revenue source, am I looking at this the same way? 

My first Airbnb was a room in my house that brought in $1500 a month. 3 years later I have 7 Airbnbs that collectively bring in $12-14k.

For example, would I call the area home insurance companies to notify them of the available rooms? 

By leveraging our experience and Seth's insights, we secured the property at a favorable price that allowed room for renovation and a profitable resale.

So paying someone 30% to carry your food across a room is a-ok but if that landlord dare raise rent on the HOME I live in.....

By leveraging our combined experience and Seth's market insights, we were able to secure the deal at a price that allowed room for renovations and a profitable resale, ensuring a successful investment.

(I have some room to go up.)

I've got a 2nd floor detached garage build i'm in the planning/permitting stages of here and looking for advice to see if any key features need added.It will have its separate entrance from main garage which will be utilized by main house STR for a game room eventually.