How do I locate housing statistics?

[Hunter Fitch]

I’ve got an area that would possibly be primed to build small multi-family. The long-held rumors are that affordable housing is scarce, occupancy is very high and the units that are renting are basically slums... holes in the floors, landlords that don’t care because they are getting ridiculously high rents because there is no competition. I’d like to put a prospectus together but my question is, where can I find the actual city data? Thanks in advance!