Hello Bigger Pockets Community,The advice I have read and received from this community has been instrumental in building my real estate portfolio. 

They’ve never done anything like this before.)While this seems to be a nice opportunity, I have no idea on what the possibilities are for a business relationship like this or what options might be available to them.They are retired, and I’m certain any funds they have are in retirement accounts (though I don’t yet have details on what kind of instruments).

The books here on biggerpockets have been instrumental for me to understand how investing works. 

Because real assets become more valuable in inflationary episodes while debt instruments become cheaper. 

Great realtor that was instrumental in negotiation process with a tough seller who is also an agent.

This investment needs to be held in a holistic portfolio and is subject to covariant risk/return patterns along with other financial instruments. 

I found this on Google:New York law provides that “[n]o natural person shall ask or receive, directly or indirectly, compensation . . . for preparing deeds, mortgages, assignments, discharges, leases or any other instruments affecting real estate . . . unless he has been regularly admitted to practice, as an attorney or counselor, in the courts of record in the state” (N.Y.

@Mark DavidsonYes, a Solo 401(k) can use debt-financing as you suggest, so long as the debt instrument is non-recourse and everything is isolated within the plan envelope. 

Here in TX, there are title plants that have staff at the county courthouse or datafeeds to get a local copy of every instrument.

Start by pulling the recorded instruments related to the parcel.