We replaced the roof, and then 25 sheets of plywood under it that had rotted out.  

If you have a contact at a title company, they may give it to you but I'm sure you'll wear out any favors that they may owe you quickly and that source will dry up.

My reason being is that prices seem to be at a peak, there may be some value to be found from wholesalers compared to market value but the "good deals" are drying up across the country.

I asked the roofing company at that time if there was anything more I need to do, since the area inside the roof must have got wet due to the rains, and they told me not to worry and to paint the discoloration on the drywall that happened due to the water, after the drywall dries up.

Or someone who will hang an investor out to dry when times get tough?

I've used a dry ice blaster before it came out beautifully.

Look for soft/rotted wood or siding;  especially near the ground.  

Combine that with the rusted out gutters leaking water on there and the California sunshine and I bet you dollars for doughnuts that the siding will be pretty rotted in places.

That is exactly why the higher dollar markets have bigger crashes when money dries up as owners have no cash flow coupled with losses in value, even below their purchase price, which causes investors to flee the market.Rentals outside of Texas, especially the high dollar states like the east and west coasts (with the southern coasts excepted) typically have significantly less cash flow or even negative cash flow for rentals so all profit is expected from buying below market, principle pay down AND (mostly) appreciation. 

Heating in winter and cooling in summer - your contractor will have the utilities cranked up full blast because they have the window open so paint and drywall mud will dry.