There are mirrors at bends in the corridors to prevent someone from waiting unseen. The intercom buzzer system for the front door works properly. Mailboxes show no evidence of tampering. All exterior doors and locks are in good working order. All windows accessible from ground level are protected by bars.
All fire escapes are alarmed or enclosed to prevent unauthorized access.
Trees and bushes near the building are not overgrown, and bushes are kept below window height. Garage doors are kept locked, and are controlled by either a key or magnetic card. If required to give the superintendent a key to your apartment for emergency use, seal it in an envelope and sign your name across the flap with your signature overlapping onto the body of the envelope. This will deter against tampering. Periodically ask to see the envelope.