Can you throw a shed in the backyard and charge an $75/month for storage?

I know this is a gray area and not all agree on what constitutes an in-law :/ Thank you in advance for wading through all the details and any light you can shed. 

Can anyone shed some light on this?

Tenant erected a 12 x 12 outdoor extendable living accommodation shed in the backyard without any permission installed permanent tiles, ran wiring in the shed for lighting, fans, for electrical devices and also for air conditioning.

I believe you do not need a permit for a storage shed under a certain size.You are probably grandfathered on only 1 parking spot.

You may feel you are the smartest kid on the block and that may even be true however, you cannot increase another person's risk and shed responsibility to another without their full awareness and acceptance and there are just too many holes in your permise which is why it is illegal. 

Thank you, Aaron for shedding some light!

i think i have a potential seller its a double wide 1846 square feet move in ready , with a short white fence & a shed 3 bed 2 bath 2 living rooms they want 39500 usually single wide homes are at that price in that park but i dont see comps for double wide onesi bepieve lot rent is 500-600

I would love to meet someone from this area or within 50 miles who can shed some lights on me about real estate.

Let me first provide a little context on where we are at with the deal and the overall condition of the property.My intention: Primary residence- 2 yrs, then rentalLocation: Denver, CO (Very high growth neighborhood, this deal was almost all dumb luck...)Condition: House is B Class, recently remodeled, 3br, 2ba, huge yard, carport, shed, new roof, everything about this house is above and beyond what I consider move in ready.Asking price:  $399,000Days on Market: 27My Offer: $375,00 (Accepted)Contingencies: Inspection, Appraisal and Seller allowed to live in the property for 9 months after closing while new build is being completed.The seller is in a position where they need capital to finance and complete the build that has already broken ground on their new home.