In addition, increased potential for moisture damage and fire damage.

Rifle rounds can penetrate most levels.

I had one that was so bad that I actually had to retexture all the drywall in the house because the smell had penetrated even the paint.....sigh.....

I spoke to a floor specialist (that she used) and he said that was due to excessive moisture. 

Maintenance / SafetyAdd carbon monoxide and smoke detectors to 1stand 2nd floor (42) Remove old detectorsInstall gutter downspouts to prevent moisture intrusion (126) Reinstall vapor barrier in crawl space (127) Replace insulation within wall by the bathtub (106)§ To be discussed when wall is openedPine PanelingInstall 1x6 T&G Pine Paneling Everywhere that vertical paneling is currently installed.

Penetrations must be fie sealed.

There's no obvious signs of moisture/leaks and I've run an ozone generator 3 times at 2 hours each straight into the return vent.

During the inspection process, no red flags were raised for moisture, etc.  

Exterior Decking:Exterior Decking damaged unsafe to use with advanced wood decayExterior Window and Door Framing:Active moisture staining rot and termite damagestone foundation:significant pargement and mortar deterioration needs stone repointing and parged to avoid potential stone shiftingEnvironmental concerns:Basement lot of mold Mold TestsConfirmed cladpsporium and hyphase and pencillium type of modls in basement at unusual levelPest TestsVisible evidence of wood destroying insects and dea insects and termite related damage noticed.

But its a difficult market for the common investor to penetrate, simply because of the size of cost of these communities, the regulation, and the operating expertise.