Has anyone out there developed and managed one of these short-term commercial spaces?

You could still do an exchange but you would pay tax on the $70K and shelter the remaining $63Kish of profit.If you have access to outside funds you can "buy" the note out of the exchange and replace it with cash. 

We like to offer wide access to our units, to help drive interest and to prevent discrimination claims.We use a scoring system to objectively rate the applications and choose the best fit for us.Some things to consider: https://www.biggerpockets.com/blogs/4445/44420-ten...

Electrical was done beautifully, one panel for common areas and then one panel for each floor. 3 easy access water tanks and furnaces.

I have a commercial bldg. on a busy street that I tried to sell outright @ $180,000.00.

You, the seller, and the neighbor should have sorted this out before closing.I'll assume that if the encroachment was not there that you have full access to your property, including the meter. 

You would be looking for commercial contractors, not a GC if you want one company to handle the whole project for you.

Or concealed grid tile (I doubt they are concealed grid, that is a commercial system)...

What kind of passes/permits/wristbands etc are required to access the amenities?

I do have free access to tax delinquencies and legal notices, but just looking to expand my options.