Personally, I think you're putting the cart before the horse. 

I hope this helps you get back on the horse!

It used to be illegal to drive a car down the street in Ohio (1903) now it's illegal to ride a horse down the street. 

Beat that dead horse!

The stretch along White Horse Pike has its pockets. 

Very few listings will discuss things like knob & tube wiring, fieldstone foundations, cedar post supports & beams, damp basements, horse hair plaster, uneven floors, condition of HVAC equipment, mold in the bathrooms and basement, brands of kitchen appliances, quality of light fixtures and cabinets, height of ceilings, quality/age of windows and doors, etc. 

A better investment is starting  a horse boarding business. 

I will make sure to talk to a lawyer and city zoning officials (and anyone else I need to) up make sure of the details, but how can people rent out a room in their horse and not be required to do the same?

Kind of putting the cart before the horse in my opinion.

I’ve been practicing real estate law in the Chicago area for most of my career, and I’ve encountered a few pieces of horse sense in my time working with clients who make their living buying and selling real estate.