In other words, you would have already invested thousands prior to the auction just to research the properties and their titles.What is your recommendation because without doing a proper title search (which sometimes takes weeks and passes the auction date), how would you know if what you're buying is a good investment?

They had no interest in the mobile home; they just wanted the property so another family member could build a home on it.

I would be surprised if there weren't notices given to both the defaulting End Buyer (You're in default, you must close by X date or we're forfeiting your deposit) as well as the escrow agent (Buyer defaulted, see contract Earnest Money paragraph regarding release) prior to that actually occurring.

Personally, I've bought older homes since I invest in mobile homes myself.

This might give a one-time (non-scalable) boost to cash flow, offer multiple value-add options, and allow the house-hacker peace of mind, via the assumed mortgage, in long-term breakeven or positive cash flow in the event that the value-add plans end up not being executed, and/or the person has to move out, and rent by the room or STR become unavailable for some reason at a future date.

As @Jonathan Greene mentioned this is kind of a dated strategy in the new price/interest rate environment.

The Sheriff will then deliver the Summons to the Tenant.Your Day in Court When the Landlord files the Complaint, the Clerk will give him a court date.

Sure you can get away with it , until a home inspector looks at the dates on electric wire , or pvc pipe . 

Each time the response was “Unfortunately I cannot provide an exact estimate at this time for the date of completion”.

Yes Ive done a free months rent is lease signed by X date before