Ontario, San Bernardino County
Rekey Locks after Buying a House in Ontario, Before You Unpack
Short answer: Yes, you should rekey locks after buying a house, ideally on the day you take possession. Sellers, their relatives, agents, cleaners and contractors may all hold copies, and none of them have to give those back. Rekeying swaps the pins inside your existing cylinders so every old key stops working. Julian's Locksmith does it on site in Ontario; call (951) 903-3193.

Walk the outside of almost any resale house and you'll find evidence of how far the old keys traveled. There's the fake rock beside the planter, a magnetic key case stuck under the meter box, a combination lockbox a handyman left on the hose bib, and the agent's lockbox that hung on the front door through every showing. Some of those you'll spot. Most copies you never will, because they sit in other people's pockets and kitchen drawers. That's why new owners rekey locks after buying a house instead of chasing keys one by one. Julian's Locksmith re-pins every cylinder on your property in Ontario, so each stray key becomes a useless piece of brass, and you decide exactly who gets the new ones.
What to expect in Ontario
Keys are only half of a modern home's access. A keypad deadbolt may still open with the seller's code, or with codes they gave a cleaner years ago. A smart lock such as a Schlage Encode, Kwikset Halo or August may still be linked to the previous owner's app account, which means they could operate it remotely; a factory reset clears that. Garage door openers keep learned remotes and keypad codes until someone erases them at the opener's learn button. We handle the lock side, resetting keypad codes and smart lock pairings, and we'll point out the rest so nothing gets missed. The alarm company needs a call to change master codes, and the HOA handles pool and gate fobs. Expect us to ask for proof that the house is yours. Because your driver's license won't show the new address yet, a photo ID with your closing statement, grant deed or escrow documents works. That check is how we make sure we're helping the buyer, not someone who simply happens to be standing on the porch.
How we can help in Ontario
- Whole-house rekey on possession day. Possession day is when this service makes the most sense. We arrive with pins, key blanks and a code machine, work door by door, and test every new key in every lock before leaving. If a cylinder turns out to be seized or broken, we stop and show you rather than forcing it.
- Mailbox lock change. Mail theft is common enough that the mailbox deserves the same attention as your front door. Who changes a cluster box lock depends on who owns the unit: the HOA or developer, or the postal service. We'll help you sort out which applies, then change your compartment lock and cut new keys where it's ours to do.
- Lock condition check and upgrades. A rekey visit is a natural time to evaluate the hardware itself. We check backset, bolt throw, strike plate screws and how the door sits in the frame. Some buyers stop at rekeying; others add a higher-security deadbolt on the front door or a sturdier lock on the garage entry. Your call entirely.
- Key control after the move. Rekeying resets the clock; good key habits keep it reset. We'll cut exactly the number of keys you need, talk through where a spare should live, and set up a simple plan for housekeepers or contractors, such as a keypad code you can delete when the job ends instead of another loose key.
- Security screen doors and iron gates. Plenty of homes in Ontario have a steel security screen door in front of the main entry, and it usually has its own deadbolt and its own key. Sellers often forget to hand that key over. We rekey or replace the screen door cylinder so it runs on your new house key, and check that the latch still meets the frame.
Local factors in Ontario
Long commutes shape how you rekey. Many buyers in Ontario leave before dawn and get home after dark, so the house sits empty most of the day. We start at 6:30 a.m. every day and work until 11:30 p.m. That makes a before-work or evening rekey realistic. Since the garage entry is often your everyday front door, that lock gets extra attention, and a keypad deadbolt can spare you a lockout at five in the morning.
Older homes in Ontario often carry decades of key history: original knob locks, deadbolts added by a later owner, maybe a rim lock on a back door. Vintage cylinders can be stiff or corroded, and some original hardware isn't worth re-pinning. During a post-purchase rekey, we'll tell you which locks deserve new pins, which deserve retirement, and whether those older doors and frames will hold a modern deadbolt properly.
Where rental housing is dense, a purchase is often a condo carved from a former apartment building or a small multi-unit property with tenants in place. Rekey your own unit right away. For occupied units, California generally expects reasonable written notice before entry, with 24 hours presumed reasonable, and the tenant needs new keys the same day. Civil Code §1941.3 also requires working deadbolts on the main entry doors of rental units.
Common situations
- For example, a couple closes on a 1960s single-story home in Creekside, and the seller's agent hands over three different keys plus a garage remote. During the walk-through we'd find a Kwikset front deadbolt, a Schlage knob on the garage entry door and a padlock on the side gate. A typical plan: re-pin what matches, swap the odd cylinder, and leave them with one key for every door.
- Suppose escrow closes and the ring from the agent opens the front deadbolt but not the side door or the door from the garage. Maybe a seller swapped those locks years ago and kept the keys in a drawer that left with them. After checking your ID and closing papers, a locksmith would open the two odd locks, read their pins, and bring all three doors onto one new key.
- Consider a bank-owned home off Archibald Avenue bought as a first house. The preservation company changed the locks at foreclosure, likely to a code shared across many properties, and the lockbox was opened by every agent who showed it. In a case like this, rekeying every exterior lock, plus checking for broken latches left over from the vacancy, would be the first job before anything else.
- Think of a family moving into an estate-sale home near Graber Olive House, where the previous owner's caregivers, relatives and a home health aide all had keys over the years. Nobody can produce a list. Rekeying every exterior door, plus a reminder to clear the old garage opener codes, gives the new owners a clean starting point before the moving truck arrives.
How the visit works
- Book around your possession date. When you call, have the property address, your possession date and a rough count of exterior doors ready. Photos of each lock face, including the brand stamped on the deadbolt, let us stock the van with the right pins and cylinders. We work every day, 6:30 a.m. to 11:30 p.m.
- Bring proof of ownership. Since your license won't show the new address yet, bring photo ID plus a closing statement, grant deed, escrow instructions or similar documents in your name. If the deed hasn't recorded yet, escrow paperwork showing the close is fine. We check this before touching any lock; it protects you as the new owner.
- Walk the property and count cylinders. We also try every key the sellers left in every lock. That quick test shows which locks the old ring actually operates, turns up doors nobody had a key for, and flags cylinders that were swapped years ago. While walking the perimeter, we keep an eye out for leftover lockboxes and hidden spares so you can remove them.
- Re-pin each cylinder. Your new combination comes from a fresh code, not a variation on the seller's key. We cut keys on a code machine to the manufacturer's depth and spacing specifications, keeping neighboring cuts within the allowed limits so the key turns smoothly and doesn't wear early. Kwikset SmartKey cylinders are reset with their own tool instead of loose pins.
- Reset codes and test every key. With the pins done, we clear keypad codes, factory-reset smart locks and pair them to your phone. Then we test every new key in every lock, from inside and outside, with the door open and closed. A key that turns stiffly gets corrected now, not discovered when you're standing on the porch with groceries.
- Hand over the keys and the record. Before we leave, we count the keys out with you and decide where each one goes. A spare belongs with a person you trust or in a lockable spot indoors, not under a mat or inside a fake rock. If you'll add locks later, hold on to the key code record so new hardware can match from day one.
How we quote the job
- Lock condition. Vacant and flipped homes bring their own wear. Locks left unused for months can seize, flip crews sometimes paint right over escutcheons and screws, and preservation crews may have drilled cylinders and swapped in whatever was handy. Each of those adds labor or parts. We point them out during the walk-through so the quote reflects the actual hardware.
- High-security and smart locks. High-security systems often come with a key card that proves who may order copies. If the sellers handed it over, the cylinders can usually be re-pinned or re-registered through an authorized channel. If the card is gone, replacing those cylinders may be the practical route. Either way, we'll explain the options and their costs before you commit.
- Scheduling and location. We're based in San Bernardino and travel to every rekey, so distance from our base plays a part. Planned visits are easier to route than rush calls. We're open every day, 6:30 a.m. to 11:30 p.m., so possession-day work can land on a weekend too.
Every job gets a clear quote before any work starts. Call (951) 903-3193 with the details and we'll tell you what to expect for your situation in Ontario.
What to do before we arrive
- Ask the sellers to remove the property from their app accounts before closing: Wi-Fi garage controllers, video doorbells, smart thermostats and connected locks. If they can't or won't, factory reset each device after you take possession. A garage controller still tied to someone else's phone can raise the big door no matter which keys you hold.
- If you plan a remodel, give contractors a temporary key and plan to rekey once they're finished, or install a keypad lock whose code you can delete. Rekeying twice costs less than wondering how many copies a crew made, and good contractors won't be offended by it.
- Skip the address tag on your new key ring. A lost ring labeled with a street address is an invitation, and a ring labeled 'front door' tells a finder exactly what it opens. Colored key caps or a simple shape code do the same job for your household without telling a stranger anything useful.
- Ask for one key for the whole house. Fewer keys means fewer copies to track, and it's easier for every family member. If you want certain areas kept separate, like a home office or detached workshop, we can put those on their own key while everything else shares one.
Mistakes to avoid
- Hiding a spare outside the same week you rekey. A fake rock or a key on top of the door trim is the first place anyone looks, and it hands a stranger the very access you just paid to remove. Give a spare to someone you trust, or use a keypad code you can delete.
- Ignoring codes and electronic access. A rekeyed deadbolt with the seller's keypad code still active, or a smart lock still linked to their app, leaves the door open to them. The same goes for garage remotes and alarm codes. Reset everything programmable on the same day the keys change.
- Rekeying only the front door. The garage entry door, side door and back door are just as likely to be used by someone with an old key, and they're often easier to approach unseen. If you're paying for a visit, cover every exterior cylinder, plus gates and the mailbox if they're keyed.
Reaching Ontario
Ontario is about 25 miles from our San Bernardino base, roughly 33 minutes in light traffic via I-215 North to the I-15 junction at Devore. When you call, you get an arrival estimate based on where the technician is and the traffic at that moment.
Commercial jobs on busy stretches like Vineyard Avenue sometimes need a parking plan, especially for storefront doors or roll-up gates. Let us know about loading zones, red curbs or parking structures before we arrive.
About Ontario: Ontario International Airport serves as the West Coast air and truck hub for UPS and a major distribution point for FedEx Express.
| Neighborhoods | Ontario Center, West Ontario along Mountain Avenue, Ontario Ranch, Park Place, Guasti, Euclid Avenue historic corridor |
|---|---|
| ZIP codes | 91761, 91762, 91764 |
| Main routes | I-10, SR-60, I-15, Euclid Avenue |
| From our San Bernardino base | about 25 miles via I-215 North to the I-15 junction at Devore, then I-15 (Ontario Freeway) South to I-10 West and Holt Boulevard for downtown and the airport; stay on I-15 South to Ontario Ranch Road or SR-60 for Ontario Ranch. SR-210 West to I-15 South is the usual alternate. |
Planning a rekey in Ontario?
Call (951) 903-3193 and tell us how many doors you want on the new key and the brand of the locks if you know it. We'll quote the rekey before any work starts.
Frequently asked questions
Can you make all my new house keys the same?
Usually, yes. Locks of the same brand and keyway can be keyed alike during the rekey, so one key opens the front door, garage entry, back door and gate. If you have a mix, such as Kwikset and Schlage, we can swap cylinders or replace the outliers. We'll explain the options and their prices before doing any of it.
Is it better to rekey or change the locks on a new house?
If the locks work well and you like them, rekey. It keeps the hardware and replaces only the pins and keys. Change the locks when they're worn, damaged, cheap or mismatched, or when you want an upgrade like a smart deadbolt or a higher-security cylinder. Many buyers do both: rekey most doors and replace one or two problem locks.
What do I need to show the locksmith to prove I own the house?
Photo ID plus a document tying you to the property: your final closing or settlement statement, the recorded grant deed, or escrow documents. Your license won't show the new address yet, which is normal. If the house is held in a trust or LLC, bring something showing you're authorized to act for it. We check this before working on any lock.
The house is brand new. Do I still need to rekey?
It's less urgent but still worth checking. Builders often use construction keying so the trades' key stops working after the homeowner key is used, yet that only works if every cylinder was actually switched over. Model homes and spec homes also see plenty of visitors. A quick test or a full rekey removes the uncertainty for a modest cost.
Do I really need to rekey locks after buying a house?
Yes. You have no way to know how many copies of the old keys exist or who holds them: previous owners, relatives, cleaners, contractors and the agents who used the lockbox during the sale. Rekeying makes all of those keys useless in one visit, for less than replacing hardware. It's one of the first things a locksmith will recommend to any new owner.
The sellers didn't leave keys to every door. Can you still rekey?
Yes. Once we've confirmed you own the house, we can open most residential locks without damage by picking or decoding them, then re-pin them to your new key. Damaged or high-security cylinders occasionally need drilling, and we'll tell you before that happens. A missing key is a common closing-day problem, and it folds easily into a whole-house rekey.
How far is Ontario from your base?
Ontario is about 25 miles from our San Bernardino base, roughly 33 minutes in light traffic. Arrival time depends on traffic and on the job the technician is finishing, so we give you an estimate on the phone before you commit.
Related services in Ontario
- Rekey Locks in Ontario
- Lock Rekeying in Ontario
- Change Locks after Buying a House in Ontario
- Locksmith for New Homeowners in Ontario
- Rekey All House Locks in Ontario
- Same Key for All House Locks in Ontario
- Rekey or Replace Locks in Ontario
- Smart Lock Setup in Ontario
- Mailbox Lock Change in Ontario
- Rekey Locks after Moving in Ontario
Rekey Locks after Buying a House in nearby cities
- Rekey Locks after Buying a House in MontclairSan Bernardino County
- Rekey Locks after Buying a House in ChinoSan Bernardino County
- Rekey Locks after Buying a House in UplandSan Bernardino County
- Rekey Locks after Buying a House in Rancho CucamongaSan Bernardino County
- Rekey Locks after Buying a House in ClaremontLos Angeles County
- Rekey Locks after Buying a House in EastvaleRiverside County
- Rekey Locks after Buying a House in PomonaLos Angeles County
- Rekey Locks after Buying a House in EtiwandaSan Bernardino County

