Found during home inspection

Found during home inspection; windows, doors and main electric panel showed signs of very high humidity, the interior heat was very high as well and felt very humid (felt not metered), no immediate observation of plumbing leaks etc... found this during attic inspection; insulation was added but someone neglected to install the proper vents, the insulation was packed tight down to the soffits resulting in very limited to no air flow through the attic, all soffit vents are plugged with insulation. Observed discoloration on rafters and roof decking as well high humidity in living space, this could all be avoided with proper attic ventilation, occupants were unaware of this and felt the attic was properly updated as assured by their contractor, OOPS!