That would just look weird though. You don't have that service so it should be sealed off- remember your FC 'purchase' is very franchise like rather than outright ship ownership itself.Please leave all FC optional space open by default but with no staff (like you did on IA service at engineer ground bases) or locked by the UI (but ship management should be free to owner).
FC owners has full access to property they purchased, they dont like useless locked rooms to remind them purchasing something.
The other is that the default 'not bought / unlocked' state is something other than a door, maybe a storage room- but something dressed differently.