All concrete apartment building with mold issues

[Derek Robinson]

Hello all!

I'm looking at a property, a four unit apartment building.  It is built on a concrete slab, has concrete block walls, and a flat concrete roof.  There is mold growing on the ceilings and walls in the bathroom and kitchen.  It is heated by electric plug in heaters and cooled with window units.  There is no ventilation (other than windows and doors), so the moisture simply has no where to go!  My thought is by adding a HVAC system and providing air circulation that this would remedy the problem.

Has anyone had experience with moisture issues in an all concrete structure?  Any advise? Thanks!