I downloaded a house from the sims gallery and am having the same issue with the bottom most floor.
Hoping to bump and find a fix
I haven't been able to reproduce it either. @alicialoraine would you please provide me with a link to the gallery home that you mentioned has the problem? Or its name + the creator's name so that I can look it up and do some testing with it? Alternatively, @neontigah if you can upload your build to the Gallery (just name it "Test Basement Wall Problem" or the like), I could take a look at it. Also, it would be helpful to know which lot(s) you're experiencing the issue on. Thanks!
