I can offer advice on: All things online marketing and measurement.

I'm curious about what protective measures other have taken.

Literally all you need is a tape measure and utility knife, and time. 

It seems like you are trying to sell @Allan Leal 10 cap properties because you think a 10 cap represents some measure of profitability when in fact that number does not.  

Go out and look at them-take measurements of the outside and a bunch of better pics-then go out and do a better job of advertising than the owner and at a profit!!  

I know a lot goes into selection of neighborhood, floor plans, schools, etc. but on a more macro scale what measure can be used.

Measure between the outside edges of window casing and find shutters that are half that dimension.  

San Francisco’s 10.3% annual gain is its first double digit year-over-year increase since July 2014.Also read: West Virginia sees largest drop in home prices over last year Unlike other measures of home prices, the Case-Shiller report includes three months of transactions — in this case, January, February and March.

We also gave them materials on usage habits that would reduce their water consumption.Once the shadow billing was underway, we updated the toilets (1.25 usg UHET), shower heads (1.5usg/min), faucets (new aerators where possible - 1.5usg/min) so the tenants could see the impact of water efficiency measures and know that we were committed to helping them minimise their water consumption.We also replaced the existing laundry machines with HE units - provided by a 3rd party in a revenue share arrangement.  

Consider your vote count as a measure of your added value.