@Tyler Rosenstein  Rentometer has been pretty spot on when I've used it to assess market rental rates. 

You can network with other investors, realtors and google housing market stats to determine the hot spots.

However, doing leasing for years, and doing dozens of Section 8 leases, you really do start to feel for the tenants and understand that many of them are in bad spots and are desperate for housing.  

The subfloor and wall plates were saturated and rotting.Here is another picture of the end of the hall under ultraviolet light - the glowing spots are intense urine stains:There was not a laminate floor in the place that did not have cupping from animal urine and the vinyl on the lower level had been scratched through to the subfloor in several spots.

They are very easy to spot.

Love the 760 story, touched a soft spot, been there, done that in Australia with a couple of places, one we even lived in whilst doing it!!

Being one week into my journey as an investor, I can certainly say two things: 1)  I received and devoured quite a bit of info on investing and building a business in investing from Fortune Builders, and I have to say it all sounds pretty spot on and logical… at least to a newb.  2)  Now, statement #1 being all well and good, there is no way in this world I'm plunking down $30K+ for extra training.  

To keep costs down, I wrote content (or copied some of it from other sources) for my yellow letters and saved it my electronic records.  

This is how an appraiser just gave us numbers in his report distilled from 187 pages:30min average length of stay * 18 hours open = 36 times a spot will be taken 200 total spots * 80% filled = 160 spots filled 160 spots filled * 36 times = 5,760 cars in garage a day 5,760 cars * 5 dollar charge = $28,800 revenue for the day

Check out the floors around the outside walls and windows for soft spots which are usually common for mobile homes.