Once you do it and understand what it all entails, you will be able to move forward more quickly moving forward.

Estoppel is a legal doctrine that prevents a person from asserting rights or facts that are inconsistent with earlier actions or statements.

Some investors assert that there is no such thing as D class or warzones one the west coast, FYI.

When someone asserts that they own a deceased persons real estate, it's often more revealing about the individual's loud ignorance than rooted in fact.Follow Wayne and Guy's suggestion and let the title company render their opinion of title. 

I would suggest looking at duplexes to start (this also entails that you have 2 of everything to consider:  HVAC, water heaters, appliances, etc).Financing is usually simpler for a SFR, in general, which is something to consider.

The buyer really can hide the assert this way since the buyer really did not own this property on the record yet.  

. - Squatters have been know to hold up a project for months, even years, by asserting that they are tenants.  

However, I disagree with you assertion that there is no advantage to having 60% equity. 

Property managers have no problem dropping clients who don't bring multiple units, so trying to assert yourself in this situation could back fire.

(Yes there would be some pros of doing it before I get the deal as I can see what the future will entail etc) but until I actually make money/close my first deal I do not need to do anything tax/accountant related right?...