Properly educated people tend to do better in returns and know how to ask questions and pre-determine other people.  

@Frank D'AmatoI have never buy Kentucky tax lien.The Kentucky annual tax lien certificate auctions are held during between the months of July and October.All of the Kentucky county tax lien certificate auctions are held on location.The bidding method is a first priority sale followed by random selection.The county first allocates those certificates of delinquency for which third party purchaser’s requested a priority claim prior to the auction, the remaining tax lien certificates are sold, usually in predetermined lot sizes.

I'm a newbie and need some clarification:  is the ARV calculated with actual expenses from prior 12 months or is it a predetermined formula such as the 50/50 that underwriter's use?

It's more complex than just having someone on the phone telling you what the bid is.To do it right, you also need teams of people to pre-determine a baseline of value, pull and analyze title reports, drive properties, pick up checks ahead of time, and yes, show up to the auction with a cell phone that won't lose reception.The service I use charges 6% of the purchase price or a minimum of $10K.

As Don said, this is an elective sale and the owner of these properties have a predetermined value in mind.

Here's the concept:Would you as an investor be interested in financing the purchase of a BRRR, and partnering with a contractor to handle repairs, maintenance, and property management on a mutually agreed upon and contracted basis, in exchange for equity at a pre-determined sales date or market indicator?

When pre-determined construction phases are completed the contractor submits a bill and is paid within 10 days.

What you're asking is, "how do I tie up a property that is for sale, so nobody else can buy it, for a predetermined period of time (probably longer than 30 days...since you have no buyer). 

The landlord would either need to build in that cost into the lease based on the number of expected turns, or possibly better for everyone, have a flat rate fee predetermined for deep clean, paint if necessary, carpet cleaning or other minor repairs.

I have tenants prequalified for loans who are willing to pay over Market Rents in order to move into a home now that they plan on owning at a predetermined price.