You have to ask yourself if it's worth it,financially.Probate is not cheap and your share of the proceeds will be sharply reduced with all the attorney and court fees.Plus,the original lawyer will want money for defending the estate from the lawsuit (whatever the reason for the suit).It could take a year or two to fight the sister and in the end,the lawyers will eat up the money from the estate over time.Unless the house is worth at least $200,000 or more as is without major repairs and upgrades needed,I would seriously question whether fighting the druggie Aunt is worth 2 years of litigation and court appearances.It is just my opinion as someone who has suffered through probate,don't take it for the gospel.

My aunt is my CPA, but I'm not sure how much other real estate work she does. 

And since this Mystery Investor earned the $25MM in finance (as opposed to lottery winnings or Auntie Jane left him an inheritance) I assure you that they, their lawyer, and their accountant know all about the tax implications.2.)

Only one of the salesmen gets paid out of maybe 25 people that worked the sale.Good for the listing agent but in a market like that every auntie that has an inactive liscense jumps back into the business and takes listings away from full time agents.

unfortunately, my aunt is dealing with the same exact situation- the tenet at her unit in her primary residential does not agree to the rent increase which is current extremely below market value- can you please share which lawyer you use and recommend?

It's been at least a year or more since she passed, my aunt is the only surviving sibling, it's only the house we're dealing with, she currently rents rooms out to a couple people.

So, if you have a deal and and after the Auction and realtor are paid and you have endbuyer pay all the rest of closing costs let's say you and your Joint Venture net $5000:JVP #1 gets $2000JVP #2 gets $1225And You get $1750 for orchestrating and driving the whole deal)But, now I'm in the mode of either magical thinking where some family member wanting to keep grandma's house in the family, some celebrity wants to live there because it's close to their auntie, or some movie producers want to use it in a film...

All the best  Yes my aunt is a developer in the city and her husband is a contractor.

So my great aunt is getting up in age and her property is for sale, to me specifically at the moment.

I have heard from neighbors that the aunt is the beneficiary and in charge of all of the matters of the probate.