Your brother says Mom needs new locks. Your sister says changing them will make the home harder for helpers to enter. You are the one meeting the locksmith, finding the old keys, paying the invoice, and answering the next call when somebody cannot get inside.
Do not start with the hardware. Start with the access problem. A rekey changes which key operates an existing lock. Replacing a lock changes the hardware. A keypad adds another way to enter, but it also creates a code that someone must control. Those are different jobs, and the family should not slide from one into another while a technician is standing at the door.
Name why the old access plan no longer works
Write one sentence that explains the job. Perhaps an old helper still has a key. Perhaps nobody knows how many copies exist. Perhaps the front key works only when you lift the door. Perhaps emergency access depends entirely on you driving across Ballwin.
That sentence becomes the test for every choice that follows. If the problem is an unreliable door, making new keys may not fix it. If the problem is uncontrolled copies, adding one keypad while leaving the other exterior doors unchanged may not fix it. If the problem is caregiver access, a lock that Mom cannot operate from inside creates a new problem.
Ask Mom what she wants changed and who she wants to have access. Being the daughter who handles the calls does not automatically settle who may authorize work on her property. If you are acting under a power of attorney, guardianship order, trust, or another document, check what the document actually lets you handle. A health care form is not automatically authority over the house or the bill. If ownership or authority is disputed, pause the job and use appropriate Missouri legal help rather than asking the locksmith to referee the family.
Walk every possible entrance before requesting the work
Make a door list before calling. Include the front door, back door, garage entry, basement walkout, porch door, and any detached garage or storage door that matters to daily care. Note storm doors separately. Do not assume the mailbox, garage opener, or building entrance is part of the locksmith’s work.
At each door, check and write down:
Who uses it, whether the current key turns easily, whether the door must be pushed or lifted, whether the deadbolt lines up, whether there is a second lock, and whether Mom can lock and unlock it from both sides.
A sticking door may need adjustment or repair beyond the lock cylinder. Ask the locksmith to separate those tasks in the written scope. You want to know whether the proposed work addresses the lock, the door alignment, or both.
Give each locksmith the same job
When you call, read from the same door list. Say whether you want existing locks rekeyed, hardware replaced, locks keyed alike, or a keypad considered. Ask what the visit includes, what could change after inspection, and who must be present to approve the work.
Also ask what proof of identity, residence, ownership, or authority the company expects. Have that answer before the appointment. A family group text saying you are in charge is not a document.
Request a written description that separates the service call, each door, each hardware change, additional keys, keypad setup if any, and follow-up for a lock that fails the final test. Do not approve an open-ended instruction such as “make the house secure.” That phrase hides choices about entrances, key holders, and future access.
Confirm the company name, the person expected at the house, how that person will identify themselves, and how payment will be documented. Do not send account information or access instructions to a caller you have not verified through the company contact you chose.
Decide who will receive access before the appointment
Make a key roster with Mom. Use names, not categories such as “the kids” or “the aides.” Include Mom, you, each sibling who is supposed to enter, a trusted nearby backup, and any paid service whose access has been approved.
For each person, decide whether the access is permanent, temporary, or only for an emergency. If paid helpers work through an agency, ask the agency how keys or codes are accepted, stored, shared, and returned. Do not assume an individual worker should keep a personal copy.
Missouri emergency-planning materials encourage identifying people who can help and making sure a trusted person can enter the home. That does not mean everybody needs a key. One named backup with a tested way inside is more useful than an unknown stack of copies.
If the family chooses a keypad, name the code manager. That person records who receives a code, changes it when access ends, and keeps a non-electronic backup route. Ask how the lock signals a low battery, how batteries are changed, what happens after repeated wrong entries, and how the door opens if the keypad does not respond.
Control the work while the locksmith is there
Meet the locksmith at the agreed entrance. Walk the entire door list before any hardware comes off. Have the locksmith identify which locks can be rekeyed together, which cannot, and which doors need a different repair. Update the written scope before approving added work.
Keep old keys under your control during the visit. If hardware is removed, decide whether Mom wants it left with her or taken away. If you approve disposal, have that noted. Do not leave loose old cylinders or labeled keys where a visitor could mistake them for working access.
If Mom is paying, use her funds only when you have authority to do so. Keep the invoice and proof of payment with her records. If you pay from your own account, write down that it was your payment and whether reimbursement was approved. Public guidance for people managing someone else’s money consistently emphasizes separate funds, complete records, and receipts. A small home-service bill still belongs in the ledger.
If VA has appointed a fiduciary to manage Mom’s VA funds, that appointment concerns those funds. It is not a general house key or automatic authority over every property decision. The fiduciary should keep complete records and receipts for any authorized payment made for Mom’s benefit.
Test the finished job like someone who will use it alone
Do not accept a quick turn of one key while the door is open. Test each changed entrance with the door open and closed. Lock and unlock it from outside. Then test it from inside. Check the knob, deadbolt, latch, strike plate, and any storm door separately.
Have Mom perform the ordinary sequence if she is willing and able: approach the door, identify the correct key or control, unlock it, open it, close it, and secure it again. You are checking the whole task, not judging her. Notice whether the key is hard to insert, the lock requires force, the door must be pulled into place, or the new key is too similar to another key she carries.
Test every issued key in every lock it is supposed to operate. Label the keys without writing the street address on them. Count the working copies before the locksmith leaves. If a key is for only one entrance, record that limitation.
For a keypad, test the regular code, the backup key, the inside control, and the lockout behavior described by the locksmith. Do not publish the code in a family thread that includes people who do not need continuing access.
Close the handoff before you leave
Give each approved person the correct key or code and record the handoff. Collect old keys when practical, while recognizing that a rekey is what makes an unreturned old key stop working. Tell paid helpers and family members which entrance to use and what to do if the lock sticks or a code fails.
Put one backup contact beside the access plan. Write the person’s name, phone number, relationship to Mom, and the specific help that person can provide. “Call the family” is not a backup plan.
Store the final door list, invoice, payment record, key roster, locksmith contact, and any keypad instructions together. Send siblings a short completion note: what was changed, what was not changed, who holds access, who paid, and who owns the next problem. Leave out the actual code.
The job is complete when Mom can use the door, the approved helpers can enter, old access no longer works where intended, the backup route has been tested, and the paperwork shows exactly what happened. If you need a neutral place to keep turning family grievances into assignments and records, use Start here. The public materials behind these checks are collected on the Sources page.