The buildings and the hardware
Morton’s housing stock means a lot of different lock conditions. Older wood doors often have mortise locks or three-piece strike plates that need exact alignment; newer vinyl and fiberglass doors commonly use bored cylindrical deadbolts and latch assemblies. Apartment entrances and multiunit buildings tend to keep simpler, standardized hardware that’s easy to rekey or swap, while detached houses more often have heavier deadbolts and separate security strikes. That variety changes the approach: sometimes the job is realigning and shimming, sometimes removing and replacing an entire lockset to match the existing door prep and security requirements.