Why change door locks when you move into a Walnut home?
When you buy a house, you have no idea how many copies of its keys exist. The previous owner had some. So did their agent, a contractor or two, maybe a relative, a house sitter, a neighbor who watered the plants. Most of those people are perfectly honest. The problem is that you can't verify any of it, and a lock you can't account for isn't really yours yet. That is why a lock change is usually the first job we get after closing, and why people search for a locksmith for a new house before they have unpacked a single box.
New owners are not the only ones who call. We also change locks after a lost or stolen key, after a roommate or partner moves out, after a break-in that damaged the hardware, when a lock has gotten stiff and unreliable, or when someone is simply tired of carrying five different keys for one house.
Walnut is mostly owner-occupied single-family homes, so the typical job is a house with a front door, a back or patio door, a door from the garage, and sometimes a side gate. We treat the job door by door, because each one has its own condition and its own needs.
The phrase 'change locks' covers more than one thing. It can mean rekeying the locks you have, replacing them with new hardware, or doing a bit of both. Part of our job is telling you honestly which one fits your situation, rather than selling the bigger job by default.
Should you rekey or replace your locks?
This is the question most Walnut homeowners are really asking, and the answer depends on the hardware you already have rather than on a one-size rule.
Rekeying means we open the lock, change the internal pins to match a new key, and put it back. The lock body stays on your door. Old keys stop working, and the new keys work. It is the quieter, less invasive option, and it is usually the more economical route when the hardware is in decent shape. Our lock rekey service page covers the process in more detail.
Replacing means the hardware comes off and new hardware goes on. It is the right call in several situations, and our lock replacement service page goes deeper on that side.
- Rekey when the locks are sound, working smoothly, and you are happy with how they look and how secure they are.
- Replace when a lock is worn, loose, corroded, or damaged, so that rekeying would just put new pins into a failing part.
- Replace when you want a different grade of security, a different finish, or a keypad or smart lock instead of a plain keyed one.
- Replace when the hardware is a mismatched mix of brands and you want every door on a single key without chasing compatibility.
- Rekey when you want every door on one key and the existing locks can be made to match, which they often can.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How we change your locks, step by step
Here is how a typical visit goes. The details shift depending on the doors, but the order stays the same.
- You call (213) 577-1366. A person answers at any hour, and we ask which doors are involved, what brand and style of locks you have if you know, and why you are changing them.
- We send a technician in a mobile van to your address in Walnut. If you are not sure whether you want to rekey or replace, that decision happens at the door, with the hardware in front of us.
- We look at every lock that matters: front door, deadbolt, back door, garage entry, side gate. We check how each one turns, whether the bolt lines up with the strike plate, and whether the door itself is sagging or rubbing.
- We tell you what we recommend for each door, and why. You decide. If rekeying will work on three doors and one lock should be replaced, we say so plainly.
- We do the work, then test every lock with the new keys and confirm the old keys no longer operate them.
- We hand over the keys and explain what was done, so you know exactly which doors are on which key. If you want spares, we can cut them, and our key duplication page explains that side.
What affects the price of changing locks in Walnut?
We don't quote numbers on a web page, because a number without seeing your doors would be a guess. What we can do is tell you honestly what moves the cost up or down, so nothing at the door surprises you.
The biggest factor is the number of locks. A single front-door deadbolt is a short job. A whole house with several entry points takes longer and uses more parts.
The second factor is rekey versus replace. Rekeying uses the hardware you already own, so you are mostly paying for labor and new pins. Replacing adds the cost of the new hardware itself, and that varies widely by brand, finish, and security grade.
Other things that shape the final bill:
- Condition of the existing locks. A lock that is sticking or worn may need more work, or may be better replaced than rekeyed.
- Hardware type. Standard keyed locks, high-security cylinders, and keypad or smart locks are priced very differently.
- Door and frame condition. Heat can make a door swell or shift, and if a bolt no longer lines up, adjusting it is extra work.
- Number of keys you want cut, and whether you want every door keyed alike.
- Time of day. A late-night or holiday call involves different effort than a scheduled daytime visit.
- Travel. Walnut is about 39 miles from our Westwood storefront, so distance is part of the picture for any mobile call out here.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Changing locks in Walnut: Snow Creek, Lemon Creek, Walnut Hills and beyond
Walnut is largely 1970s through 1990s single-family tract housing on hillside lots, with many HOA-governed communities and some larger equestrian-zoned properties. Homes of that age often still have their original builder-grade hardware, which is one more reason new owners ask us about it. Homes in the Snow Creek area, the Lemon Creek area, and Walnut Hills fit that description, as do many streets within ZIP code 91789.
The most common local scenario we see tied to this service is the tract home rekey for new owners in an HOA community. Someone closes on a house, gets the keys from the agent, and wants the locks sorted before the first night. If the existing locks are original and still working, rekeying is often enough. If one of them is worn after decades of use, we replace just that one and rekey the rest so everything runs on a single key.
Many Walnut homes also have a side gate, a backyard gate, or a garage service door, and these get missed in a lock change more than any others. A hillside lot means these doors are often on a slope or tucked at the side of the house, out of sight. We ask about them before we start.
Climate matters too. Walnut has hot inland-valley summers typical of the eastern San Gabriel Valley. Door and frame expansion during heat waves is the main practical effect, and a lock that binds in August may turn fine in February. We check alignment before deciding a lock is bad. Occasional Santa Ana dust can also get into exterior hardware, so a lock that feels gritty sometimes needs cleaning and lubrication rather than replacement.
If your property is one of the larger equestrian-zoned lots, you may have barn and gate locks as well as house locks. We can look at those on the same visit. For community gate and clubhouse hardware, see our gate lock repair page.
Which doors and locks should you include in a lock change?
People often say 'change the locks' and mean the front door. A thorough job considers every way into the house. Walk around with us, or on your own before you call, and think through this list.
- Front door lock and deadbolt. If you have only a knob lock, a separate deadbolt installation is worth discussing.
- Back door and any sliding patio door, which often have weaker latches than the front.
- The door between the garage and the house, and the garage side door.
- Side gates and backyard gates.
- The mailbox, if a previous owner or tenant had a key. See mailbox lock replacement.
- Any keypad or smart lock, where the code or app account needs to be reset to you. If you want to move to one, look at smart lock installation.
- Interior locks on a home office, a closet, or a safe that came with the house.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Why call Wilshire Lock & Key for a lock change
We have been in business since 1987. That is a long time to have been changing locks, and it means the people doing your job have seen most of the hardware that went into Southern California houses over the decades, including the builder-grade sets common in tract homes like Walnut's.
We have a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans, so the work is done by our own company. There is no dispatch middleman who takes your call and hands it to a stranger. The person who answers the phone works for the same company that sends the technician.
David, the owner and lead technician, oversees the work. If a job is unusual, or you want a second opinion on rekey versus replace, that is the kind of question he answers.
We answer the phone 24 hours a day, 7 days a week, year-round at (213) 577-1366. A lock change does not always wait for business hours, especially after a break-in or a lost set of keys. If you are locked out rather than just changing locks, see our house lockout page, and for general home work see residential locksmith service in Walnut.
How to choose a locksmith for a new house
Letting a stranger work on the locks that protect your home is a trust decision, so it is fair to ask questions first. California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it before they start. Our license number is being added to this site soon, and until then you are welcome to ask when you call.
A few other things to watch for. A reputable locksmith will tell you what they plan to do and roughly what affects the cost before they begin. They will explain why they recommend replacement over rekeying instead of simply saying so. And they will let you keep the old hardware if you want it.
Be wary of anyone who insists on drilling out or replacing everything without looking at your locks, or who cannot explain the difference between a rekey and a replacement in plain words.
If you want to see the broader picture of where we work, our Walnut service page lists what we do here, and our locations page covers the other cities we serve across Los Angeles and Ventura counties.
Frequently asked questions
Is it better to rekey or replace locks when I buy a house in Walnut?
It depends on the locks you have. If they are in sound working order, rekeying is usually the more economical route and cuts off every old key. If a lock is worn, damaged, or a mismatch with the others, replacing it makes more sense. We look at each door and tell you which applies.
Do I really need to change locks after buying a house?
You are not required to, but it is a sensible step. You cannot know how many copies of the old keys exist or who holds them. Changing or rekeying the locks means the only working keys are the ones you hold.
How long does it take to change the locks on a house?
It depends on how many doors are involved and whether we rekey or replace. A single door is a short job, and a whole house takes longer. We will give you a realistic sense of the time once we have seen the doors.
Can you change locks on the same day I call?
We answer the phone 24 hours a day, 7 days a week at (213) 577-1366, and we will tell you when we can get a technician to your Walnut address. Walnut is about 39 miles from our Westwood storefront, so we plan the trip and give you a straight answer on timing.
Will my old keys still work after the locks are rekeyed?
No. Rekeying changes the internal pins so that only the new key operates the lock. We test each lock with the new key and confirm the old one no longer works before we leave.
Can all my doors be put on one key?
Often, yes. If the existing locks are compatible, we can rekey them to match. If a lock is a different brand or a poor fit, we may replace that one so the whole house runs on a single key.
What if my HOA has rules about exterior hardware?
Many Walnut communities are HOA-governed, and some have rules about the look or finish of exterior hardware. Check your HOA guidelines first. Rekeying keeps your existing hardware in place, which avoids most appearance questions. If you want new hardware, tell us the finish you need.
Can you change smart lock or keypad codes too?
Yes. If the house has a keypad or smart lock, the old codes and app accounts need to be reset to you. We can do that, or replace the lock with one you set up yourself. See our smart lock installation page for more.
How do I know a locksmith is legitimate?
California requires locksmith companies to hold a BSIS LCO license, so ask for it. Also ask what the work will involve and what affects the cost before they begin. A reputable company explains the plan clearly and does not push the largest job.
More locksmith help in Walnut
Change Locks near Walnut
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.