The buildings and the hardware
The pattern of housing and buildings in this township affects the work. Many single-family homes still have original doors and mortise or older cylindrical locks; jambs can be out of square, strikes may be undersized, and screws are often short. Apartment buildings bring keyed-alike systems, master-keying questions and tighter clearances for knobsets. Storefronts and small commercial spaces use aluminum-and-glass entry systems and heavy-duty deadbolts or exit devices. For older doors you often replace parts into existing cutouts; for newer doors you can upgrade to a modern deadbolt or reinforced strike without altering trim.