And of course, this is our ONLY property that's in an LLC, so we have to pay a lawyer to run an eviction.I'll spare you the rest of the sordid details.  

You should get some recommendations on lawyers in your jurisdiction and then discuss.

Jeremy, i simply don't want the liability of potentially being personally accused of 'id theft' and the likes of 'negligent enablement' thereof in today's highly litigious America where it seems like 50% americans are prescribed some sort of psychiatrics drugs and the other half on recreational ones; and the average civilian being practically a professional 'crisis actor'. frankly, and im not even kidding, 10-20 years ago it used to be that young adults wanted to be rock stars. now its practically like every one wants to be 'lawyer'?

                $75,000.00              (2014)Lawyer Fee (10%):                                            $7,500.00Demo (2015):                                                    $8,600.00Property under contract for sale:                     $8,000.00The Question: How do I go about filing my taxes. ( my tax prepare is not sure )What is my basis.

It's a lot easier to become an engineer than say a doctor, or lawyer (with tuition these days, a whole lot cheaper too!). 

Now, when you say he left this weekend, hopefully, I believe (not a lawyer, no legal advice) that means, however unlikely, that he could still demand access to the unit until lease end date unless you actually perform eviction proceedings, even if he owes you rent.  

He needs to talk to a competent estate planning lawyer in his state.

The leases my tenants sign are with the LLC with me as the property manager.I'm not a lawyer and cannot provide legal advice. 

(Or so my lawyer says) good luck to you.

I have not used these yet or had a CA lawyer look them over but my guess it they would be fine.