Ultimately one of the key measures of existing home value is new construction cost.

You are looking at a cap rate as a measure of profitability when it is not. 

Get a handyman and give him a tape measure, get the measurements, buy the windows, and have him install at $50-$75 per.

The list of research is really endless but I recommend you think through the first year and what could really derail you and identify risk mitigation measures for those scenarios...you cannot eliminate risk but you can be prepared for it and make informed risk decisions.

I live on the coast, and am looking into climate change resilience measures for my property.

@Dave Dagostino - when I said survey, I just meant he walked through the house to take the internal measurements for a room-by-room layout. 

Quite frankly I wouldn't be surprised if other cities in the Bay Area start adopting rent control measures.

Well, it's not all bad, at least the measure exempts "...properties not being sold at a profit".  

Investors of seller-financed loans (aka real estate paper) now have measurable statistics on industry trends and sophisticated financing models.

For example, traditional TV ads and billboards have no way to determine if they're actually reaching the right audience (or measuring the success even if they did).