Can you rent it out separately as a tiny house?

Yes it can be a tiny bit more time to find a qualified tenant, but I feel they are a more qualified tenant and stay longer.

I record the few checks I get manually in the system, and when I deposit them, I use the ATM, so I get a tiny image of the check printed on my receipt.

I managed a 26 unit building that had been built in 1906 and converted to apartments during WWII in Silicon Valley, and most of them were tiny studios.The great thing about renting out smaller units, is you have less tenants - and less kids.  

I also came across code regarding adding a tiny house on wheels, which Fresno allows, which is totally cool - but, it says it can't be separately metered. 

Account Closed Tiny Homes on Wheels are an excellent option!

I’ve seen drawings from my architect where 2bd can be fit into a sub-500 square feet plan (at the insistence of his client) and was approved, but there was almost no living room to speak of or the bedrooms were tiny to the point of impractical.

I'm super low income, I was a struggling working single mom, lots of opportunities to try the tiny violin refrain with landords, but I never did.  

Even though I was very friendly, I was also very firm on the building policies, which was really important in a 26 unit building shaped like a "U" made up of mainly tiny studios, where many of them could hear everything that was going on in the other units. 

They can take, edit, resize, annotate, add smilies and post a picture on a tiny phone with ease but can't change a light bulb or swap out a battery at the back of a wall clock, let alone keeping an eye on a buried pipe or a leaky water heater relief valve.