Obtaining this result in a predictable, deterministic way in the general case with huge numbers of variables has proven (to me at least) elusive.

I'm completely confused , but I offered 47,900 there are 2 apartments potential rent of 650 a month minimum 550 , So income 1100 Zillow predicts expenses at 272 monthly .

Obviously we can't predict the future with any real accuracy, so who knows what the broad market will think about ADUs 30 years from now, but in my market even though they are uncommon, they spike the value of homes anytime they are well kept. 

Coupled with migration data from the ACS, this can be a very powerful dataset to use when attempting to predict future housing prices, vacancy, and absorption rates.

To me there doesn't seem to be any way to predict that based on simply arriving late.Just my 2 cents. 

Predictable.

My prediction is that prices will stagnate and slightly decrease if the economy opens up by May 15th.

It's a way to get predictable returns modeled out over years in times of economic uncertainty and some civil and political unrest.

SFH sale price and SFH days on market.Third, the market here has followed a pretty predictable cycle over the past 70 years. 

It probably is, but good to check on.The psychology of sellers is hard to predict.