Ontario, San Bernardino County
Commercial Rekey Projects in Ontario, Planned Door by Door
Short answer: Commercial rekeys in Ontario can be scheduled before tenants arrive or after they leave. Julian's Locksmith works every day from 6:30 a.m. to 11:30 p.m. Buildings on interchangeable cores often need far less time on site, because new cores are pinned in the van and swapped at each door with a control key.

Every commercial building builds up a key history. Former tenants, leasing agents, HVAC and fire-alarm vendors, janitorial crews, contractors from the last remodel: each may have been handed a key at some point, and very few of those keys come back. A commercial rekey in Ontario resets that history in a single project. Julian's Locksmith re-pins your existing cylinders to new combinations, cuts a counted set of keys, and gives you a written record of which key operates which door. From that point forward, you know exactly who can get in, and the next rekey starts from accurate records instead of guesswork. Call (951) 903-3193 to talk through the property.
Commercial Rekey in Ontario: what to expect
How a building is cored decides how a commercial rekey feels. With conventional fixed cylinders, every cylinder has to come off the door, be disassembled, re-pinned and reinstalled. With interchangeable cores, the hardware stays mounted and only a figure-eight-shaped core comes out, released by a control key. Small format cores, the A2 and A4 pinning systems used by Best, Falcon, Arrow and others, and large format cores from Schlage, Sargent, Corbin Russwin, Yale and Medeco both follow this idea. For a rekey, that means new cores can be pinned ahead of time and swapped at each door in moments, which makes IC buildings well suited to frequent tenant turnover. The trade-off is the control key: anyone holding it can pull any core in the system, so it needs tighter custody than any master key. If your property has fixed cylinders and you rekey often, ask whether converting the high-turnover doors to IC housings is worth it. Julian's Locksmith can explain both approaches and quote each so you can compare them on paper before deciding.
How we can help in Ontario
- Mortise cylinder rekeying. Many mortise cylinders in commercial buildings are decades old and stiff from dust and graphite buildup. During the rekey we clean the plug and shell, replace tired springs where needed, and lubricate lightly. If a cylinder's pin chambers are too worn to hold a new combination, we'll tell you and quote a replacement instead.
- Construction keying conversion. Contractors, subs and inspectors have all handled a project's construction keys. Converting to permanent keying at turnover makes sure none of those keys work once the building is occupied. We can coordinate timing with the general contractor or the owner's representative, so the conversion happens after the last punch-list visit.
- Tenant suite turnover rekeys. Leasing teams want a vacant suite ready to show. We can rekey it, cut a small set of keys for management and showings, and come back to cut the incoming tenant's keys once the lease is signed. That way no extra keys drift around while the space is on the market.
- Office furniture, cabinet and mailbox locks. File cabinet keys are usually stamped with a code that many key suppliers can cut from, which makes them weak key control. When we rekey furniture locks, we can move them off those common codes onto keys you control and record. Cabinets holding personnel files or patient records are the right place to start.
- Phased rekeys and keying records. Large properties rarely get rekeyed in one shot. We break the work into phases, building by building or floor by floor, and finish each phase with every door locked and tested. Between phases, the keying chart shows which doors are already on the new system, so staff know which key to carry where.
What's different about Ontario
Distribution centers and warehouses around Ontario lock far more than personnel doors: roll-up doors, dock offices, battery-charging rooms, fenced yards and fuel cages. Shift work means someone is always on site, so a commercial rekey has to be phased so every shift can still get through its doors. We inventory padlocks and gate cylinders along with the doors, because a perfectly rekeyed building with an old yard padlock still has a hole in it.
Plenty of building managers and owners drive in from elsewhere in San Bernardino County, so timing a commercial rekey around when a key holder can be on site matters. We start at 6:30 a.m. every day, which lets us finish a suite before tenants arrive, and we can work into the evening for buildings that clear out late. Tell us when your contact will be there, and we'll plan the visit around that window.
Apartment communities have commercial doors of their own: the leasing office, maintenance shop, pool equipment room, laundry rooms and package rooms. When a maintenance supervisor or leasing manager leaves, those keys often leave too. A commercial rekey of a community's back-of-house doors in Ontario can happen without touching residents' unit locks, and we'll keep the property's master structure intact if it's well documented.
Example situations
- For example, a church or community nonprofit that rents its fellowship hall to outside groups may have lent out keys for years without tracking them. A commercial rekey can split the property into a key for staff offices, a key for the hall and kitchen, and a master for the facilities committee, so a weekend rental no longer means handing over access to everything.
- For example, a property manager oversees a two-story office building off I-10 where a law firm just vacated a second-floor suite. The firm returned four keys, but the lease ran seven years. We'd rekey the suite entry and its three interior doors to a new change key, keep them on the building master, and confirm the old keys still fail at the shared restroom corridor, which stays on its own common key.
- Picture a strip center where the landlord gets a storefront back after a restaurant tenant closes. The front is a narrow-stile aluminum door with an Adams Rite deadbolt; the back is a steel door with a panic bar and rim cylinder. A typical commercial rekey here covers both cylinders plus the grease-enclosure padlock, and we'd note whether the storefront hook bolt is worn before the next tenant moves in.
- Picture a light-industrial unit off Milliken Avenue with two roll-up doors, an office entrance and a rear man door. The outgoing tenant left padlocks on the roll-ups and took the keys. After confirming the landlord's authorization, we'd remove those padlocks, rekey the office and man-door cylinders, and fit new rekeyable padlocks on the same key so the incoming tenant carries just one.
Step by step with Julian's Locksmith
- Scope call. The first conversation covers what's driving the commercial rekey and who's behind it. A tenant departure, a lost master, a contractor handover and a portfolio cleanup each lead to different plans. Tell us who owns the building and who's ordering the work, since those may not be the same party.
- Authorization and site walk. Before rekeying a commercial property we confirm your authority: ID plus a deed, management agreement, lease with lock rights, or a signed authorization from the owner. Then we walk the property with you or a maintenance lead and log every keyed opening, including the ones people tend to forget.
- Keying plan and quote. For buildings with existing master keying, the plan respects what already works. If your management master opens every suite today, it should still open them afterward. We'll show which keys change and which stay, so tenants and maintenance staff know what to expect before anyone's key stops working.
- Scheduling around occupants. We schedule commercial rekeys inside our hours: 6:30 a.m. to 11:30 p.m., seven days a week. Early starts suit retail and medical tenants; evening work suits offices. Each phase ends with every affected door locked, tested and keyed, never left half done.
- Rekeying and testing each opening. Testing goes beyond turning the key. We check that latches retract fully, deadbolts throw completely, exit device trim responds, and storefront hook bolts engage their keepers. A rekey that works on the bench but binds once the door is pressed closed isn't finished.
- Keys, records and handoff. Handoff is also when we review key custody: who holds masters, who holds control keys, how spares are stored. We'll suggest a simple sign-out log or key cabinet if you don't have one. Good custody keeps a fresh rekey from going stale within months.
How we quote the job
- Cylinder count and hardware mix. Counting before you call makes the first quote much closer. Walk the building once and tally exterior doors, interior locking doors, panic bars with keyed trim, storefront locks, padlocks and cabinets. Call with that number. We'll confirm it on site and quote any difference before doing extra work.
- Interchangeable cores versus fixed cylinders. Fixed cylinders take more labor per door: removal, disassembly, pinning, reassembly and reinstallation. On a small property the difference hardly matters. On a building that turns tenants over often, that extra labor repeats at every turnover, which is when an IC conversion starts to deserve a serious look.
- Master keying and keying charts. Keeping the existing master while changing suite keys is common and usually efficient when records exist. Changing the master itself means touching every cylinder in the system. If a master key was lost, that's often unavoidable, and we'll explain why before quoting the full scope.
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.
Common errors that cost time and money
- Cutting too many keys. Ordering a dozen spares just in case puts unlabeled keys in drawers, glove boxes and truck consoles. Cut what current key holders need plus a small, logged spare set, and cut more later when someone actually needs one.
- Booking from a phone price that never asked about cylinder count or hardware type. A commercial rekey priced without knowing the doors is a number that will change once someone arrives. Ask what's included per cylinder, whether keys and padlocks are extra, and get the full price before work starts.
- Adding a key-locking deadbolt to the inside of an exit door to tighten security during the rekey. Building and fire codes generally require exits to open from inside without a key or special knowledge, with only narrow exceptions that come with signage and conditions. Egress function is a code question, not a keying choice.
Advice before you book
- Keep the keying chart and bitting list off site, or locked away from the general key cabinet. Anyone who reads it could have keys cut by code at a shop that doesn't ask questions. Treat it like the combination to the building, because in practice that's what it is.
- Collect old keys at tenant move-out even though you're rekeying. Returned keys tell you whether anyone held a master or a key to shared doors that wasn't on your list. If a returned key opens something unexpected, that door belongs in the commercial rekey too.
- Stamp keys with a number, not a door name. A key stamped 'Suite 210' or 'Warehouse Master' tells whoever finds it exactly where to go. Keep the number-to-door list in your own records only, and log who holds each numbered key and when it was issued.
- Where afternoon sun hits metal doors in Ontario, ask for a dry lubricant during the rekey. Heat bakes oily lubricants into a sticky paste that pulls in dust, which is a common reason commercial cylinders start to drag a year or two after the work is done.
Getting to 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.
Rush hour on Vineyard Avenue can stretch a drive considerably. We'd rather give you a realistic arrival window than an optimistic one, and we'll call you if a closure or a crash changes the plan.
About Ontario: Canadian-born brothers George and William Chaffey founded Ontario in 1882 as the Ontario Model Colony, naming it after their home province, and the city incorporated on December 10, 1891.
| Neighborhoods | Creekside, Ontario Ranch, New Haven, Downtown Ontario, Ontario Center, North Ontario near Chaffey High School |
|---|---|
| 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
How long does a commercial rekey take?
It depends on cylinder count and hardware type. A single suite with a few locks is often handled in one short visit. A building with dozens of mortise cylinders, exit devices and padlocks may take a full day or several phased visits. Interchangeable core buildings move fastest because cores are pinned ahead. After the walk-through, we'll give you a realistic time estimate along with the quote.
Should we switch to restricted keys during the rekey?
It's worth considering if unauthorized copies concern you. Restricted keyways use blanks that ordinary key shops can't buy, so copies go through an authorized source with a signature on file. It means new cylinders or cores rather than re-pinning existing ones, so the upfront cost is higher. For buildings with frequent turnover or valuable inventory, it often makes sense.
When can you schedule a commercial rekey in Ontario?
We work every day from 6:30 a.m. to 11:30 p.m., and we're closed overnight. For occupied buildings, early mornings and evenings usually work best, and large properties are scheduled in phases. Call (951) 903-3193 with your door count and preferred window, and we'll give you an honest estimate of when we can start.
What happens if a master key is lost?
A lost master usually means every cylinder that master operates needs attention, because whoever finds it can open all of those doors. Sometimes we can rekey to a new master while keeping change keys the same, which avoids recutting every tenant's key. Other times the whole system needs new bittings. We'll review your chart and explain the options before quoting.
Are you licensed for commercial locksmith work?
Yes. Julian's Locksmith holds California locksmith company license LCO7891, issued by the Bureau of Security and Investigative Services, and you can verify it at search.dca.ca.gov before booking. Because we're a mobile service, the rekey happens at your property, with cylinders pinned in the van or at the door, across the Inland Empire and the surrounding valleys.
Should a commercial tenant rekey without asking the landlord?
Check the lease first. Many commercial leases require landlord approval before locks are changed and require the tenant to give the landlord a key afterward, especially in master keyed buildings. Rekeying without permission can put you in breach or knock your suite off the building master. Get approval in writing, then we can schedule the work and coordinate keys with management.
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
- Lock Rekey in Ontario
- Commercial Lock Rekey in Ontario
- Master Key System in Ontario
- Master Key Rekey in Ontario
- Commercial Locksmith in Ontario
- Restricted Key System in Ontario
- Key Control System in Ontario
- Commercial Lock Replacement in Ontario
- Business Lock Rekey in Ontario
- Storefront Lock Repair in Ontario
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