Parking is free in the parking deck (level B).

I want to get into mobile home parks.

There were several park owned homes in the park that we quickly sold to tenants for $1.

Generally speaking, I would post the proper notices according to state law and then start the clock ticking until you can officially treat it as abandoned. 

I recently purchased a parking lot for a group on condos at a deed auction in arizona.

In that example I wouldn't expect $75k to be the exact cost of repairs, just an acceptable ball park figure.

This will give you a general idea of availability of rentals, price points, demand for rentals (based on average days on market), what's usually included with rentals (heat, laundry, parking and etc) and more.* Run the numbers.

If you target mobile home park investments, you should be able to achieve dollar-for-dollar passive losses and in some cases even more than that. 

I have 3 units sitting vacant in the Kimball brownline station area and Irving Park blue line station area for 3 months.My PM said the market is slow atm and many units are unfilled for months around.

Normally off-street parking attracts better tenants.