Not sure what you mean about taking rabbits from the wild? Do you mean escaped/released domestic rabbits or actually wild rabbits?
If it's the latter, you'll need more than one building...in fact a row of aviaries or something similar would be ideal (the sort of set-up you see in wildlife hospitals/rehabbers).
Myxi will be your main worry with rabbits from the wild, which can be spread by flying insects, so quarantining will be difficult.