Make a small door list
Walk through the entrances you are responsible for and note which key operates each one. Include an accessible side door or the keyed door between a house and its private garage if those are part of the request. Do not assume that locks which look alike use the same key or can be made to do so.
You do not need technical product names to start. Explain how many doors are involved, which keys still work and whether the owner or manager has agreed to a change. The key and approval guide is also useful when a property is rented.
A key change and a repair answer different questions
If the lock operates properly but you no longer know who has copies, rekeying suitable locks may address the access question without changing every piece of hardware. Suitability and the final scope need to be checked; an unfamiliar key is not, by itself, a diagnosis of a broken lock.
If the hardware is already difficult to use
If a key catches, a handle is loose or the latch will not engage, describe that separately. Ask about assessing the lock problem before deciding what needs replacing. Avoid forcing a stiff key or taking the hardware apart just to identify it.
Which property in Miami Lakes?
Veterans Park is listed by the town on NW 82 Avenue, with Mary Collins Community Center at the site. That is useful local orientation, but a request near the park still needs its own street number and entrance. Keep any community name or gate instructions alongside the full address rather than using them in its place.
Tell us if the address is actually in Hialeah or Miami Gardens. When you call 786-706-9100, your door list, working-key details and approval contact will help keep the discussion focused on the change you need.