Get out of the car and walk the area or get a soda and sit down and watch the area for an hour or two on multiple occasions.

This is how we did it starting out - we looked at our monthly bills, and started aggressively eliminating expenses that ranged from things we would not miss at all (like cable subscriptions), to things that we would miss a bit but would not affect our happiness overall (like buying soda, eating out often, etc.).

The same soda bottles was left on the front yard for over a year.Again, the checked the public records, no mortgages and liens.

But, you can use data to talk yourself into or out of any investment.  7/11's are not going to be replaced by online soda machines. 

It’s like the cost of six pack of soda vs buying six individual sodas.... the cost can be 2-4 times more when you buy the soda individually.

Appreciation, depreciation, amortization of the loan, and cash flow (and laundry machine or soda machine or parking money if applicable :) all blended to create my actual return on ownership of the asset. 

It's like trying to answer "How many calories should I eat?".   

I would look at Clear Lake, specifically Soda Bay.

I don't think it is the same as marketing a pair of sneakers or a soda.

I recently sod a package of about 2 dozen homes in Detroit and buyer found squatters in a handful of them.