The building itself seems to be safe from zombies ; Chip will notice, in the greeter's office of the waiting room, the zombie corpse and dead woman that Max had seen before. Constantine doesn't really need to 'scout' - the shambling hordes aren't hard to make out. They're coming from all direction, closing in slowly, slowly. Their moans are so loud by now that it's becoming hard to hear your own thoughts over them. Chip estimates that the closest ones will be right on the police station in less than fifteen minutes.
Deeper within the building, a very *distinct* lack of bodies, human or otherwise, will be notable. Wouldn't people flock to the police? The office has a small armory, with a handful of rifles and shotguns, and a mess of personal sidearms. The medical supply cabinet has what you might need for immediate first aid, but nothing extensive.