If your zoning application WAS approved, you would then have to submit signed and sealed alterations plans by a registered architect that demonstrates that the conversion meets all current codes, including existing building, Architectural life safety, Electrical, plumbing, mechanical, energy and fire protection.

That treatment makes it less porous but not sealed from water damage.

Was not required by code when the house was built but is now required for safety of inhabitants.3) There's various cracks in the stucco and the inspector recommended sealing them up.4) It looks like facia around the house is pretty deteriorated from weather and should probably be replaced5) Some electrical and breaker box outside around patio area are not done well and may need to be re-done.

Pro tip, before you paint, seal everything with a high quality primer.

All foundation cracks should be sealed with epoxy injection.The grade along the front and rear foundation walls is low and needs to be improved so water flows away from the foundation.

Sometimes sealing up places where they hide out is important.  

Further work discovered, the O-ring that is supposed to seal the pan to the piping isn't actually touching anything.

Interesting, as I’d think SPG would be very vulnerable as well, as I think covid will help seal the fate of more malls.

Sounds like a water leak issue.....bad liner, improper water sealing techniques, bad plumbing...all kinds of causes....How old are these units?

You may have to bring them all up to code.Has the building been air sealed or insulated?