A spreadsheet has its place in your daily operations and tracking efforts, but I highly recommend starting with a software like QuickBooks Online to track your expenses in a more formalized manner.

@Tanner Sortillo- thanks - I would have the new investor get a solid idea of financing options and for them to get formally pre-approved for a hypothetical scenario. 

Such acts may be seen by the courts as bordering on intentional conduct, depending on the level of recklessness involved.What might be some examples of gross negligence on your property? 

Some states require a long formal court process, during which time the person in charge (executor or administrator, aka personal representative) may have certain interim powers to sell real estate before distributing to heirs or beneficiaries.Other States make it possible to get a single court order distributing real estate to heirs or beneficiaries without the need of the lengthy interim (formal) probate.Still other States permit a really informal, simplified method of transferring real estate from a deceased person to their heirs without court involvement.Hence, you you've got to know the State, the basics rules for that State and what's required to purchase in order to know when the sweet spot to market to a probate seller is.

I would probably try to speak with them face-to-face or on the phone and finish the conversation by telling them you will send them a formal letter shortly with the exact date after you talk with your contractor/partner, etc. 

The Major international border project is nearly complete called the "Gordie Howe International Bridge" This will increase the connectivity between Detroit and Windsor Ontario and create synergy which will change both riverfronts and the surrounding neighborhoods "As one of Canada’s most significant infrastructure projects, the Gordie Howe International Bridge is creating thousands of jobs and driving economic activity today and will serve as an important trade corridor for Canada and the U.S. once complete and for generations to come.

Is that interior lot line assumed when a duplex is built, or is some kind of formal process needed?

I'm walking with a contractor today to get a rehab ballpark estimate before making a formal offer, but want to be prepared for the next step should my offer be accepted. 

take Oakland and Oakland Schools  Piedmont Borders Oakland if you cross one street into Piedmont with Piedmont schools the values literally DOUBLE for the exact same house.  

So for us, Cross border investing may be what turns out to be the better option.