What do you find as the best data source for house prices? 

In this episode it talks about rental arbitraging many units in apartments and then being awarded government contracts where you house a large amount of government employees  and the government pays you well over market rent.

The only time I know of recently in the US when house prices dropped was about 15 years ago when banks had been lending money to people that should never have been given loans.

Repair foundation, updated siding to front of the house, used medium to high end finishes, beautified the landscaping What was the outcome?

House Hack? 

Get the error of your predicted housing price (if you're using price per square foot, convert to housing price) down to $10K-$40K or so. 4.

The FHA loan house hacking wouldn't work for me for at least a year due to me having a year left in college.

I’ll give you that AI can drive machines that one day can build houses to some degree.  

By comparing we let those come out and is where you can get into fair housing violations.

My preference is to actually have to separated as cost efficiently as possible, but also wouldnt mind the ADU and main house shared meters as this would save me costs on my initial construction.