According to US census data, most recent vacancy rate for area (as of 2015) was about 8% and the area's vacancy rate appears to often be higher than the national rate. 

But median LA rent for a home appears to be about $3500.

again - I don't invest in Wisconsin but the insurance also appears to be on the low end.

The whole idea of land marking a property is to make sure owners make no changes to the appearance of the property, especially the exterior .

It appears that in Pennsylvania there is a minimum cost for title insurance. 

Many times historic preservation committees are only concerned with the exterior appearance of the building, meaning you may not be allowed do things like add onto the structure, use vinyl siding, and you may be limited on the style of doors and windows that can be installed, etc.

Up front, it states:The U.S. housing market -- particularly in cutthroat areas like Seattle, Silicon Valley and Austin, Texas -- appears to be headed for the broadest slowdown in years.

Mold appears to be limited to drywall in a couple areas (wall behind a shower that was leaking and has been repaired, wall behind the washing machine).If remediation is $5k for a small job (pulling that out of the air), I doubt seasoned flippers routinely have this professionally remediated, especially when simply tearing out drywall/replacing/wiping down with bleach after correcting the moisture problem is sufficient to correct it.

The city appears committed to continue this growth.  

Keep the colors light and bright and glass enclosures and it will appear bigger.