Or maybe it was just some tax identification number, I don't remember clearly.

What data supports your claim?

A six-figure gift will likely have income tax implications.

All rooms within the property are leased as furnished.During my initial residency, the tenant expressed dissatisfaction with my personality, claiming I acted superior and nitpicked him.

if yes then you got the answer, an appraiser will never come in with the proper value of A turnkey, because they rely on local comps even though those comps need much work and the principal is already done and cash flowing.2- These turnkey sellers usually purchase there properties for far below market value, if this is the case the appraiser might appraise for A lower amount due to the previous sale on the property.I don't know what turnkey seller specifically you are talking about of, but if their customers are happy then you got your answer, if their customers claim they were ripped of then you got the answer as well.

Now, with taxes, insurance, and interest higher and rents not keeping up with property values, most investors are putting more down to get the properties above a 1.0X DSCR. 80% is acceptable, but the issue is getting the property to cash flow at the higher amount. 

Then I would have a little more equity and like you said at that point it would be a loan against an investment property which is tax deductible right? 

The damage claim was in excess of $800,000. 

This is relevant for multiple reasons 1) appreciation is where the real wealth is generated in RE 2) real estate has tax advantages over cash flow 3) in CA property tax increase is capped.  

A single property is simpler to manage, carries lower financial risk, and offers streamlined tax reporting but may generate taxable income sooner.