The waterfront development, and the Amazon fulfillment center which are close by.Questions I have:-When looking at Zillow, there are already many rental properties available that mathematically seem that they would cash flow positive.

I am waiting for a mathematically correct home.  

i know mathematically with the refi till you die crowd its not the best on paper.. but boy what a safe position to be in.after all there is untold value in live well sleep well with zero debt.. especially as you get older.  

This is a huge mathematical problem that is very common among REI of different levels of experience. 

Maybe not the most mathematically optimal solution, but we will be proud to pay it all off fast and never have to think about it again.

Mathematically, this approach should produce far more wealth over time, if we accept the CAGR of about 10% from historical stock investments.If you're really conservative, you can always keep a mixture of cash and stocks, and gradually increase the allocation towards stocks over time, so that you never go below that number which you are comfortable with.But, bottom line is that this allocation of small amounts of money (less than $100,000) is really inconsequential over the larger issue of achieving early financial freedom.

Here is a simple mathematical question you should ask yourself that may help you answer your own question.

Obviously at some level of consistent cashflow vs. some rate of appreciation the truth of the better investment will become clear mathematically in retrospect. 

It only highlights how callous big corp. is, it's simple mathematics exactly what will happen.

The seller is going to be suspicious if you try to base the price on a mathematical formula with variable inputs.I think the best strategy is offer what you think it is worth and if during due diligence you find it is worth less, explain to the broker why you must retrade.