Use of eyes, hands, nose, and ears required...aka:keep your mouth shut
Access= keys: Apartment+Building+Mail=Time bonus for completion.
If there are no keys then you will either have to call a locksmith or drill out the lock.
Does the door open and shut correctly?
Look for marks on door and frame where contact is made.
With a screwdriver; test the screws for bite. Do they spin or are they tight?