They will evaluate critical factors like land grades, water and sewer systems, and overall feasibility.

Any decent Contractor can generally buy products for much less than you anyway, and even if you find a special deal on, let's say, Doors and Windows...who is going to take charge of delivery, unloading, storage, security, warranty and all that?

In new Self storage we use when we start to market and rent.  

In Ohio, some banks and credit unions are known for flexibility with mixed-use or investment properties include:Civista Bank - Known in Ohio for its flexibility with investment properties, they may have options for mixed-use financing.Liberty Home Mortgage - Offers a range of loan products, including commercial options that might suit your situation.Huntington National Bank - Has experience in commercial lending and may offer portfolio loans that allow combining the properties.Asking for a price adjustment for buying the single-family home in cash could be feasible, especially if the seller needs flexibility for the divorce settlement.

My only fear is that they are trying to encompass any type of real estate whether it be trailer park, self storage, or long term rental.

Your property might be a little hard for MTR based on that layout, but again the garage could be good for storage for home sellers who sold and don't know where to go as well.

Maybe city is getting ready to go crazy on solar and needs a spot for a battery storage area. 

After listening to BP podcasts and seeing some people investing from long distances I started to believe that long distance is feasible.

Good storage.

In many jurisdictions any lease 24 months and longer basically conveys additional rights and a simple eviction is no longer feasible.