Locksmith Serge
Lock Change & Replacement in Los Angeles
Replace the lock hardware when keeping the old lock is not the right fix.
Rekey if the lock still works. Repair if it might be fixable. Smart lock if you want that type of lock. Call or text 622-399-7156 to confirm availability.
What a lock change is
A lock change means the existing lock comes off and a suitable replacement goes on the same door when the door and the prep allow it. Locksmith Serge is a mobile lock and key service. When the job is a fit, we do that work at a Los Angeles house or apartment.
People ask for a lock change when the hardware is worn, damaged, outdated, or simply not the lock they want to keep. This page stays on replacing the lock. It is not a rekey article, and it is not a repair-first article for a lock that might still be restored.
The door, the backset, and the existing hole pattern matter. Not every replacement fits every door. Share what is there now so we can talk through whether a change looks possible before anyone travels.
Lock change versus lock repair
Repair tries to restore the lock that is already on the door. A lock change puts on a different lock. If the hardware might still work with a fix, start with lock repair. If you already know the lock should come off, stay here.
Lock change versus smart lock installation
This page is a standard lock replacement — a mechanical deadbolt or similar hardware that belongs on that door. Installing a keypad, app, or smart deadbolt is a different intent and a different page. If the product you want is a smart lock, use smart lock installation.
Reasons people change a lock
A lock change is a common request when keys are gone and the cylinder cannot be rekeyed, when the lock is worn out, or when you want a different style or function on the same door. Moving into a home can also lead here if you prefer new hardware instead of rekeying what is already there.
You do not have to choose replacement by default. If the lock still works and you only need new keys, rekeying may be enough. If the latch is sticking and the lock is otherwise sound, repair may be the better first conversation. Those pages exist so this one can stay on new hardware.
Common lock-change situations
These cards stay on replacing hardware. Rekey, repair, and smart-lock install each have their own page.
Worn or outdated lock
The lock on the door should come off. You want different hardware in its place. That is a lock change when the door can take a compatible replacement.
The lock still works — you want new keys
If the hardware is sound and you only need old keys to stop working, that is a rekey, not a replacement.
The lock might still be fixable
A sticking latch or loose strike may be a repair job if the existing lock can still be made to work.
You want a smart lock
A keypad or smart deadbolt is its own install conversation, not a standard mechanical replacement.
How a lock change visit works
From the door prep to an on-site replacement when a compatible lock is a fit.
- 1
Call, text, or request service
Reach Locksmith Serge at 622-399-7156 or use Request Service. Say that you want a lock changed or replaced.
- 2
Describe the door and the current lock
Give the address and what is there now — deadbolt, knob, or both — and why you want it replaced.
- 3
We confirm a compatible replacement, then install if we can help
If the door prep looks like a match and the job is a fit, we install on site. Availability and parts can vary, so we confirm first.
What helps a lock-change visit go smoothly
A few practical details that make a lock replacement call clearer.
Replacement is named on purpose
We talk through whether you need new hardware, a rekey, or a repair before anyone travels.
The door details come with you
What is on the door now, and whether it is a wood door, metal door, or security door, helps us discuss fit.
Work is done at the house
When the job is a fit, the old lock comes off and the replacement goes on at the address.
Related jobs stay on their own pages
Rekey keeps the lock. Repair tries to save it. A smart lock is a different product. This page stays on a standard change.
Lock changes at Los Angeles homes
Locksmith Serge provides lock change and replacement in Los Angeles at the door when the job is a fit. Houses and apartments are common. Availability can vary by location and time of day, so call or text 622-399-7156 to confirm.
Mobile service is available across Los Angeles and nearby communities. See our Service Areas for current local coverage.
Lock change questions
Do I need a lock change or a rekey?
Rekey if the lock still works and you only want new keys. Change if the hardware should come off. If you are not sure, describe the lock and what you want it to do. We can talk through which page matches.
Can you change only the deadbolt and leave the knob?
Often that is possible when the deadbolt is the part that needs to come off. Tell us what is on the door. We confirm what looks like a fit for that opening.
What if the new lock does not fit my door?
Fit depends on the door, the backset, and the existing prep. We talk through that before a visit when we can. Some doors need a different part or are not a match. We do not assume one lock fits every opening.
Is lock change the same as lock installation?
On this site, lock change means replacing hardware that is already on the door. The homepage may use broader wording. This page owns residential lock change and replacement. A first-time smart lock is a different page.
Can you change a lock the same day I call?
It depends on availability and the part. Call or text and ask. We confirm before anyone is sent out.
Will lock change work on a metal security door?
Sometimes, when the door and the existing prep can take a compatible replacement. Metal security doors vary. Describe the door when you call so we can talk through whether a change looks possible.
Need a lock changed?
Call or text 622-399-7156, or request service, and tell us the address and what is on the door. We will confirm availability before a visit.