@Jack Moran  It is easy enough to test for lead paint. 

My biggest concern is you actually have a good deal and inconsistent data raises red flags.  

For tax purposes, you probably want the property to be treated as a "for profit" rental if possible, because the other alternative is that it's a "hobby", and you can't write off any losses.One of the tests is that the rent has to be "reasonable" - it can be somewhat below market, but it can't be pennies on the dollar low.

@Colin Johnson, I am looking into this as a strategy as well but am data collecting and analyzing at the moment. 

Data is alot more valuable to a trade than how you charge a customer. 

@Kyle NelsonFor researching occupancy and rate info, a great site is Airdna.co the data is pretty accurate as they scrape Airbnb and Homeaway.As far as which sites to list the rental....

Admittedly, I haven't done much research on the real data of such events but I have seen the destruction these things are capable of and the potential damage to the property in a still rare but possible nightmare scenario for a landlord.

@Nirav Shah Very nice job compiling and presenting this data!

I can think of some ways to calculate how much of their electric the furnace has used based on the gas bill and some electrical testing, but nothing that quick or precise. 

I've got the data for SF homes for the years 2015-2019 compiled here for everyone.