If the caretaker in San Diego is the executor then they may have some power to transfer the property to you at some point.

Date of actual purchase/deed transfer.

The buyer would more than likely hold the property long enough to recoup their initial costs including the closing if title is transferred rather than a contract for deed being used, and the wholesaler's assignment fee.

I was wondering couldn't one just sign as an LLC and then sell or transfer the equitable interest to the end-buyer so that the end-buyer would be the new owner?

A record owner or empowered estate fiduciary may transfer title at any time.If you read a title insurance policy, most will contain a clause excluding claims by persons in possession. 

I can also manually screen new-to-town transfers from out of area.  

You are just looking to transfer the ownership from your personal name to your LLC?

I will bring a measuring tape or something else cliche and recognizable.

Borrower shall occupy, establish, and use the Property as Borrower’s principal residence within sixty daysafter the execution of this Security Instrument (or within sixty days of a later sale or transfer of the Property) and shall continue to occupy the Property as Borrower’s principal residence for at least one year after the date of occupancy, unless Lender determines this requirement will cause undue hardship for Borrower, or unless extenuating circumstances exist which are beyond Borrower’s control Borrower shall notify Lender of any extenuating circumstances

The responsibility to order the POS rests absolutely with the owner / seller.The closing date came and the ownership was transferred but no POS was carried out.