The buildings and the hardware
The built environment here affects what we see at the cylinder and strike plate. Thornbury properties are primarily single-family houses and small multi-family buildings with a mix of original wooden doors and later replacements; that mix produces both older mortise locks and modern bored locks. Older doors often have narrower stile or softer wood that benefits from reinforced strike plates and longer screws, while apartment entries and small storefronts may use keyed-alike systems or commercial-grade cylindrical locks. Knowing which hardware is already in the door determines whether a repair, a retrofit, or a full lockset replacement is the correct technical fix.