I'm cool with necros not being able to use empaths or necro-mojo to get rid of disease, and I figure this might get resolved once remedies have poison and disease cures up and running, but I'm not the biggest fan of having to wait 4-6 hours for a dormant infection to go away for the time being.
Uzmam! The Chairman will NOT be pleased to know you're trying to build outside of approved zones. I'd hate for you to be charged the taxes needed to have this place re-zoned. Head for the manor if you're feeling creative.