Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Fast, Reliable Rekey Locks Across South Monrovia Island
If you’ve just closed on a house off Peck Road, had a tenant move out near Myrtle Avenue, or lost a key somewhere between your front door and the car, rekeying is the fastest way to make old keys stop working. In South Monrovia Island, rekeying a standard lock typically runs $20 to $35 per cylinder, plus a service call that lands between $45 and $75 depending on where exactly you are in the island. That price is written down before our technician leaves the parking lot. Call (409) 405-4485 and a live person picks up, any hour. We serve South Monrovia Island daily, and we’ll give you a trackable arrival time before we head your way.
Why Preston Locksmith & Security Is South Monrovia Island’s Preferred Rekey Locks Company
South Monrovia Island is an unincorporated pocket surrounded by Monrovia and Arcadia. That matters for one specific reason: there’s no citywide locksmith licensing office here to verify against. So the only reliable way to separate a real locksmith from a transient one is what happens when the truck pulls up. Our tech arrives in uniform, background-checked, and carrying a written price sheet you already approved on the phone. Kevin Yoon, who leads the team, built our process around that exact scenario: the price in writing, the arrival time live-trackable, and before-and-after photos of every job. We’ve been operating since 2008, and the 365-Day Done Right Promise means if a rekey doesn’t hold up, we come back and fix it at no charge.
Rekeying is simple work when it’s done right. It takes 15 to 30 minutes per lock, done on site, without replacing the hardware. The problem is when companies quote a low teaser number, send someone out, and the bill swells at your doorstep. We don’t do that. The number we quote on the phone is the number on your invoice.
Rekey Door Lock in South Monrovia Island
A Rekey Door Lock job in South Monrovia Island means we pull the existing cylinder out of your deadbolt or knob, swap the internal pins to match a new key, and put it back. Your old keys stop working immediately. No new hardware, no door modification, no mess. Homeowners here typically need this after buying a home off Live Oak Avenue, after a roommate or tenant moves out, or after a contractor kept a copy of a key. In South Monrovia Island, rekeying one door lock runs $20 to $35 per cylinder, plus the service fee we confirm before dispatching. If the lock is a Schlage or Kwikset from a big-box store, the job is usually under 20 minutes. If it’s a Baldwin or Medeco, it takes a bit longer because the cylinder tolerances are tighter.
What Actually Happens on the Job
We remove the cylinder, dump the old pins, install a new pin stack configured to your new key, and test it several times in the door. Then we cut new keys and hand them to you. You can keep the same hardware, same finish, same look on the door.
When a Rekey Makes More Sense Than Replacing
If your existing deadbolt and knob are in good shape, rekeying saves real money versus replacing hardware. You keep the lock you already like, and the keys change. Replacement only makes sense when the hardware is damaged, rusted, or you want to upgrade to a higher-security cylinder.
Rekey Service in South Monrovia Island
A Rekey Service in South Monrovia Island covers every lock on the property at once, set to a single key or a small keyed-alike group. That’s the typical call we get from landlords near Shamrock Avenue who need a rental unit ready for the next tenant, or from new homeowners who want every exterior door on one key. The per-cylinder rate stays $20 to $35, and the service call covers the whole property, not per door. For a three-bedroom house with two exterior doors and a deadbolt each, you’re generally looking at $125 to $185 out the door, all in, written before work starts. That’s the kind of number we can actually stand behind, not a teaser.
Setting Up a Rental Unit
Landlords in South Monrovia Island rekey between tenants as a matter of course. We can key all exterior doors alike, key the master bedroom separately, and keep a landlord key or leave that out, depending on what you want. The whole job is usually done inside an hour.
Master Key Systems for Multi-Unit Buildings
Older duplexes and triplexes along Peck Road and around the island’s interior streets often use a mix of Schlage and Kwikset hardware that was never keyed as a system. We can build a master key system so each unit has its own key and you, the owner, carry one key that opens everything. We survey it first, send a written scope, and charge a flat per-cylinder rate. No hourly guessing.
Trusted Brands We Service in South Monrovia Island
Most homes in South Monrovia Island run Schlage or Kwikset deadbolts and knobs, and we rekey those daily. We also work on Yale entrance sets and, when someone wants a real upgrade, Medeco high-security cylinders. That training matters because Medeco keys can’t be copied at the hardware store and the cylinder tolerances are unforgiving if you don’t know the pin stack. Our techs are trained on premium brands including Medeco and Mul-T-Lock, alongside everyday Schlage, Kwikset, and Yale hardware. We carry common pins, springs, and blank keys on the truck, so South Monrovia Island jobs don’t turn into a second visit because the truck wasn’t stocked.
Common Rekey Locks Problems We See in South Monrovia Island Homes
- Worn cylinders in older rental stock. South Monrovia Island has a lot of single-family rentals built in the 1960s and 1970s, and the original Kwikset or Schlage cylinders often have a decade or two of tenant use on them. A rushed rekey leaves the key sticking or the cylinder loose, so we take the extra minutes to clean and re-grease what’s inside.
- Mixed hardware from handyman patch jobs. Over the years, different door knobs and deadbolts get swapped in from different brands, so you end up with a Schlage knob and a Kwikset deadbolt that take different keys. We can key them alike on the same visit, even across brands, by matching keyways or making a small hardware adjustment.
- The former tenant still has a key. This is the most common rekey call in South Monrovia Island. A tenant off Myrtle Avenue moves out, and you don’t know how many copies of the key exist. Rekeying wipes all of them out at once, no tracking anyone down.
- Teaser quotes that double at the door. The unincorporated nature of South Monrovia Island means there’s no local licensing office to report a bad actor to, so the bait-price call is more common here than in incorporated Monrovia next door. We counter that by writing your price down before dispatch and never adding a call-out surcharge on arrival.
Pricing for Rekey Locks in South Monrovia Island, CA
Here’s the straight math for rekeying in South Monrovia Island, CA. Rekeying a single standard cylinder runs $20 to $35. The service call to reach your home runs $45 to $75, and that covers the whole property, not per lock. A typical single-family home rekey of three locks lands between $125 and $185 total. High-security cylinders like Medeco or Mul-T-Lock run more per cylinder, usually $35 to $50 each, because the pins are specialty items. The price we quote on the phone is the final price on the invoice, no call-out surcharge added at the door, no parts upcharge mid-job. Call (409) 405-4485 for a free estimate, and we’ll quote the exact number for your locks before anyone is dispatched.
Kevin Yoon runs the team, and the 365-Day Done Right Promise is stamped on every repair: if the rekey fails within a year, the second visit is free. That’s not a line; it’s written on your invoice.
We Also Serve Cities Near South Monrovia Island
Besides working across South Monrovia Island, our Rekey Locks crews run calls into Los Angeles, San Diego, San Jose, and San Francisco. If your property sits on the edge of the island or you manage units in more than one city, we can coordinate the whole rekey in a single phone call.
Serving South Monrovia Island, CA - Our Local Coverage Area
We’re based in the South Monrovia Island area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Rekey Locks in South Monrovia Island
Our technician arrives in a marked vehicle and a uniform, shows you a written price sheet matching the phone quote, and shares a live arrival time before he pulls up. That’s The Relay Visibility Guarantee, and it exists specifically because South Monrovia Island has no single local locksmith licensing office to check against. You see who’s coming, the price, and the work as it happens, with before-and-after photos. Call (409) 405-4485 and you’ll talk to a live person from the start.
Yes. Mortise locks on older South Monrovia Island homes are heavier and more involved than a standard deadbolt, but we can rekey the cylinder in place without replacing the lock body. The per-cylinder rate still falls in the $20 to $35 range, with the service call covering the whole visit. If the mortise body itself is worn or broken, we’ll show you the damage and quote a replacement before doing anything.
You pay per cylinder for the rekey itself, plus one service call fee that covers the whole property. So a three-lock job is three cylinder charges plus one trip fee, not three trip fees. That’s the honest structure most homeowners and landlords here prefer. Call (409) 405-4485 with your number of locks and we’ll quote it exactly.
A rekey changes the internal pins so old keys stop working; the deadbolt stays on your door. Replacing the deadbolt means new hardware entirely. In South Monrovia Island, rekeying is what most people need after a move-in or tenant change, and it costs far less than new hardware. Replacement is only necessary when the deadbolt itself is failing.
Yes, we build master key systems for duplexes, triplexes, and small apartment buildings across South Monrovia Island, including the older stock along Peck Road and the surrounding unincorporated streets. The first step is a site survey with a written scope and a flat per-cylinder price, so you know the total before any work begins. Call (409) 405-4485 to schedule a walkthrough.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving South Monrovia Island since 2008.






