Separate access from wear
A working lock and an uncertain history of key copies create one kind of problem. A loose handle, sticking key or door that will not latch creates another. Tell the person assessing your request about both. Rekeying changes key access; it should not be treated as a cure for every fault.
Existing hardware needs to be suitable for the proposed work. If a lock is damaged, worn or incompatible with the key arrangement you want, another option may be discussed. Ask for the reason behind that recommendation so you can understand the difference between an access change and a necessary repair.
Count locks, then decide who needs keys
Make a note of the front door, back door and any separate house-to-garage entrance. One door can have more than one keyed fitting. Write down which existing key operates each one, rather than assuming that a matching finish means the hardware shares the same internal system or key type.
Think about the people who will need access afterward: household members, an authorized property manager or someone you trust with a spare. Ask how many keys are included and whether the selected locks can share one key. This keeps the discussion tied to your routine instead of an unnecessarily large key ring.
Arrange the change around the household
For a Milton move-in, have the new address, the relevant entrances and the person responsible for approving work ready. If you rent, check the arrangement with the owner or manager. A common building entrance belongs in a separate permission conversation from the lock on your own private apartment door.
Plan who will receive the new keys and how the change will be communicated to authorized users. Confirm the scope, charges and any remaining limitations before agreeing to the work. When the job is finished, ask to check the intended keys and doors together so the handover is clear.
BEFORE YOU ARRANGE WORK
A few useful answers.
Will rekeying change the look of my door?
Rekeying generally concerns the key the existing lock accepts, rather than changing the visible hardware. Whether that option suits your lock depends on its condition and design. Ask what will be retained and what, if anything, needs replacement before agreeing.
Does rekeying make the old key stop working?
That is the intended purpose for the lock being rekeyed. Be specific about every lock the old key currently operates; changing one does not change the others. Confirm the agreed doors and ask to check the intended key arrangement at handover.
Can I rekey only the front door?
You can discuss a single lock, but consider whether the old key also opens a back or side entrance. Explain the access concern and the full key arrangement first. That lets you choose the scope with a clear understanding of what remains unchanged.