Master Key System in Garden City Park, NY

The $195 to $850+ range comes down to two things: how many doors need to be keyed into the system and how many levels the hierarchy needs. A small strip of offices off Hillside Avenue with one master and a handful of change keys sits at the low end.

A larger property near Herricks Road or Atlantic Avenue with grand master, master, and sub-master tiers for different tenants or floors runs higher, since each tier has to be cut and tracked separately. The technician gives you an exact number after seeing the door count and current lockset types, not a phone estimate.

Garden City Park has no LIRR station of its own and is car-dependent, so the dispatcher routes the nearest available technician by road rather than assuming transit access. Call the office first: a dispatcher takes the job details and your number, and the local technician calls back within a few minutes to talk through your building's setup and quote a price before anything is scheduled.

If your property is closer to the New Hyde Park border along the south end of the CDP, mention that when you call so the tech knows which entrance to use.

Before the visit, walk the property and count exterior and interior doors that need to be keyed, note which ones already share a lock brand, and decide who needs top-level master access versus tenant-level access only. If you're a property manager, having a rough tenant or unit list ready speeds up the hierarchy design on-site.

Existing cylinders in usable condition can often be re-keyed into the new system instead of replaced, which keeps the job on the lower end of the price range.