Several of the basic services that any locksmith expert should be able to offer you no matter where you are in USA are things like copying keys and changing locks. Those are two essential services that you will absolutely need at one point or another. Some of the other services that you can get may not be as regular and or as essential.
You may require new locks installed, but you may also just be capable to repair an existing lock. If you are shifting locks, you may just require changing one and then have all the rest of the locks rekeyed. You need to ask the locksmith staten island that you are working with if this is something they can act for you. Rekeying locks rather than changing them all out can be a real money saver.