,In my opinion, and based upon almost 50 years of experience, comps are completely unreliable when used to estimate investment value or the property.To learn the history of the property and confirm your suspicions, visit the county government offices, such as the planning department.It is not recommended to assume anything when investing.

He has a daughter that is a lawyer and would not accept a quit claim deed and wants a General warranty deed.

Daughter noticed foreclosure sign in window.  

Fundamental analysis gathers a number of facts together about the investment, including history, industry, decision-makers, demographics, market analysis, etc.

History will repeat itself like it always does.

Preserve that rich history.

It actually helps your credit score because each month you pay your loan, it increases the average age of your credit history.

If you are a landlord, then you implicity bet on this by purchasing real estate, and that's not a side of history that I'm going to bet on (rents decreasing, that is). 

Really it is two structures on one piece of land...and it had built in tenants with a 5-year perfect payment history!

(But that's just me being a Mom with young daughters!!!!)