Some furnishing are limited to one per state, that's fine.

However, those unique furnishing also have the following text: "Cannot be retrieved once placed."

You can actually retrieve them, but then they are destroyed. I think that's not exactly what its description says, so either the description is wrong or it's not working as intended.

Maybe an additional option for "Rank Authorizations" should be added to the current "Furnishing placement/Removal", something like "Unique furnishing placement/removal".

I know it might seem silly, but mistakes happen, and someone not very used to housing could throw that furnishing unintentionally.