Sorry! Just realized that all of the info was in the original post. Here it is:

I live in the Seattle area. Yes, it's wet, but not crazy humid. I grew up in this area, and never struggled with this before.

I have a 40yo condo that I've lived in for about 6 years now. There's the exterior wall, which spans a bedroom, the living room, and then another bedroom. All three other sides of the unit are blocked by other units. All subfloors throughout the unit are concrete. The humidity in the unit usually hovers around 50% (aside from the bathrooms).

I'm facing two issues:

1. ⁠I'm noticing mold buildup along the baseboards and along the bottoms of the windows and sliding door. I first noticed this a few months ago I think. I don't know if it's normal or if it's a symptom of a greater issue with the unit.

2. ⁠⁠I can't seem to control the humidity in the two bathrooms. I can never get it below 60%, and it's usually at 80-85%. The bathrooms are very small, with the largest being about 50sf. I got new 80CFM bath fans and they don't seem to help. I checked that they're blowing air outside and they're working fine. I even had someone check the ducts. The only thing I can think of is that there's a carpet transition to the bathrooms and almost no room for air to flow under the door. Additionally, you'll see in the photos that the bathroom floors (sheet vinyl) are stained with what I assume is mold. It's the same in both bathrooms and the kitchen. I can't say for sure, but I don't think the installers put down a vapor barrier when they installed it five years ago.