Commercial Lock Change in Newmarket
Retail units, warehouses, restaurants, clinics and multi-tenant plazas. Door-by-door changes scheduled around when you actually trade, with your master key system left intact.
Quick answer
A commercial lock change in Newmarket typically runs $45 to $95 per cylinder if the existing hardware stays, or $150 to $700 per door if the lockset is replaced. Work is usually scheduled outside trading hours and phased across doors so the premises never closes. Call 866-820-1331 for a firm price.
A business lock change is a different job from a house lock change, and not because the locks are bigger. It is because a business has doors that different groups of people need to get through at different times of day, and because pulling a cylinder at 11 a.m. on a Saturday in a busy retail unit costs the owner money. Most of the work on a commercial lock change in Newmarket happens before anyone picks up a screwdriver: working out which doors sit on which key, who has to keep working while it happens, and what order the doors get done in.
We have been doing this on Newmarket premises since 2000. The plazas along Davis Drive and Mulock Drive, industrial units off Harry Walker Parkway, restaurants on Main Street South, dental and medical suites near Southlake Regional Health Centre, and warehouses out toward Highway 404. If your premises is a single office suite with a handful of interior doors, the page you actually want is office lock changes in Newmarket. This page is for everything else.
One thing worth saying before the detail: you often do not need new hardware at all. If the locks work and you only need the old keys to stop working, rekeying the existing cylinders does that for a fraction of the cost. New hardware is for doors that are worn out, out of compliance, or being brought onto a new key system. We will tell you which of those you are looking at before you commit to anything.
What actually gets changed on a commercial door
The hardware on your doors decides the price far more than the number of doors does.
An aluminium-and-glass storefront usually carries a narrow-stile deadlatch with a rim or mortise cylinder held in by a single set screw. Changing that means pulling one cylinder, not the whole lock, and it takes a few minutes per door. A solid wood or hollow-metal door in a back corridor is more likely to carry a cylindrical lever set or a mortise lock body. A mortise body is a proper 30 to 45 minute job because the whole case comes out of the pocket in the door edge and the trim has to come off both faces.
That distinction drives the bill. Twelve rim cylinders across a plaza, all keyed alike, is a fast morning. Twelve mortise bodies is a full day and a much larger parts cost. When we quote a commercial site we quote per door type, never per door as a flat figure.
- A door-by-door survey before anything is ordered, with each opening numbered and photographed
- Confirmation of which doors stay on the existing master and which are being split off it
- New cylinders keyed to your chosen plan: keyed alike, keyed different, or built into a master system
- ANSI/BHMA Grade 1 hardware on anything with heavy daily traffic, Grade 2 on quiet interior doors
- Strike and latch alignment checked after each change, because a new latch in an old strike drags within a week
- A written key register showing how many keys were cut, which door each opens and who signed for them
- Old cylinders either kept on site as labelled spares or removed so they cannot quietly reappear
The premises we change locks on around Newmarket
Retail units and plazas
Storefront deadlatches, stockroom doors and shared rear corridors in the strips along Davis Drive, Mulock Drive and Yonge Street. In a multi-tenant plaza the landlord master usually has to survive the change untouched.
Warehouses and industrial units
Man doors beside overhead doors, shipping office doors and yard gates off Harry Walker Parkway and the 404 corridor. These take genuine abuse, so hardware grade matters far more than finish.
Medical and dental offices
Reception, treatment rooms, records storage and the drug cupboard, each usually sitting on a different level of the key. Records rooms often need an auditable key, which is where a restricted keyway earns its cost.
Restaurants and food service
Front door, kitchen back door, walk-in and liquor storage. A kitchen back door lives in grease, steam and constant kicking, and it needs replacement more often than anything else in the building.
Multi-tenant buildings are the fiddly ones. A plaza unit typically has a tenant cylinder on the front door, a landlord master that opens every rear service door, and sometimes a fire department key box on the outside wall. Changing the tenant cylinder without telling the landlord breaks their master. Changing the landlord cylinder without telling the tenants means nobody gets in Monday morning. We ask who holds what before we book the work, and if the answer is unclear we say so rather than guessing.
Scheduling a lock change around trading hours
Survey at a time that suits you
Usually 20 to 40 minutes walking the site with whoever manages the building. We number the doors, note the hardware on each and write down which key currently opens it. Nothing is ordered until that list is agreed.
Keys cut before the van arrives
All cylinders are pinned and all keys cut in advance to the agreed plan. That is the difference between a two-hour attendance and a six-hour one, and it is why phased commercial work is cheaper per door than an emergency call.
Doors changed in a fixed order
Perimeter first so the building is secure at the end of every shift, then interior doors, then anything that is shared with a neighbouring tenant. If we run out of time, the site is still locked and still usable.
Keys handed over against signatures
Every key is numbered and signed for by name. You keep the register. It is unglamorous and it is the single thing that stops a key system quietly falling apart over three years.
Most commercial changes we do in Newmarket happen either before 8 a.m. or after close. Restaurants tend to get us in mid-afternoon between service. Warehouses usually want us at shift change. If your premises genuinely cannot pause at all, we can work one door at a time across several visits — it costs a little more in attendance but nothing in lost trade. For anything urgent outside those windows, the commercial locksmith service runs 24 hours a day.
Phased changes and keeping a master key system intact
On a site with more than about fifteen doors, changing everything in one night is rarely the right call. It concentrates all the risk into one evening, and if a single cylinder turns out to be a size nobody stocks, the whole plan stalls. We would rather run it over two or three nights in sensible groups: all exterior doors first, then a floor or a wing at a time.
The thing that goes wrong most often on phased work is the master key. If a building has a master system and somebody drops in a new cylinder from a hardware store, that door now opens with its own key and nothing else. The master stops being a master. Do that on six doors over two years and the building manager ends up carrying a ring of eleven keys and calling it a system.
Keeping the master intact means every new cylinder has to be pinned to the existing chart. If the original chart is lost — and after twenty years it usually is — we can decode the existing keys and rebuild it, or design a fresh system if the old one has been mangled beyond saving. That is covered properly on our master key system page. If you want keys that cannot be copied at a kiosk, look at a restricted key system before you buy cylinders, because it changes what hardware you order.
Commercial lock change prices in Newmarket
Ranges below are for planned work on a normal weekday. Volume brings the per-door number down; a twenty-door site is not twenty times a one-door site.
| Work | What it covers | Typical Newmarket price |
|---|---|---|
| Rim or mortise cylinder swap | Existing lockset stays, new cylinder keyed to your plan | $45 – $95 per cylinder |
| Rekey existing commercial cylinders | Same hardware, new key, all old keys dead | $25 – $55 per cylinder |
| Grade 2 cylindrical lever set, supplied and fitted | Interior and low-traffic doors | $150 – $260 per door |
| Grade 1 cylindrical lever set, supplied and fitted | Front, rear and heavy-traffic doors | $240 – $420 per door |
| Mortise lock body replacement | Older commercial doors with a mortise pocket | $380 – $700 per door |
| Storefront deadlatch replacement | Narrow-stile aluminium doors | $260 – $520 per door |
| Master key system set-up, small site | Design, pinning and key register, roughly 6 to 15 doors | $450 – $1,100 plus cylinders |
| After-hours or weekend attendance | Evening, overnight, weekend or statutory holiday | Call-out premium applies |
These are typical 2026 Newmarket ranges for planned commercial work. Overnight, weekend and statutory-holiday attendance carries a premium, and volume across many doors usually brings the per-door figure down. A firm price for your exact door count and hardware is confirmed on the phone before anyone is dispatched.
Commercial lock work around Newmarket
A few of the kinds of premises we work on across town.
Every door gets its latch and strike checked before we leave. A brand new lock that binds against an old strike plate will be a service call within a month, and we would rather spend five minutes on it now.
Why businesses in Newmarket call us for lock changes
Commercial lock changes across York Region and South Simcoe
Our base is in Newmarket and the van drives out from here, so Newmarket addresses see the fastest attendance — usually 20 to 30 minutes on an emergency. Planned commercial work is booked to a time, so distance matters much less. We regularly change locks for businesses in these communities.
Frequently asked questions
How much does it cost to change the locks on a small business?
For a typical Newmarket retail unit with a front storefront door, a rear service door and two interior doors, expect roughly $300 to $700 if the existing hardware stays and only cylinders change. If all four locksets are being replaced with Grade 1 hardware, the range moves to about $900 to $1,600. The survey is what turns that into a firm number.
Can you change our locks without closing the business?
Almost always, yes. We work before opening, after close, or door by door during quiet periods. The order is planned so the premises is secure at the end of every session even if the job is not finished. Restaurants usually book us mid-afternoon; warehouses usually book shift change.
Do I need to replace the locks or can they just be rekeyed?
If the hardware is sound and turns smoothly, rekeying is enough and costs roughly a third of replacement. Replace when the lock is worn, when the door needs a higher grade for the traffic it gets, when you are moving to a restricted keyway, or when the existing hardware cannot be pinned into the master system you want.
An employee left and did not return their key. What now?
Change or rekey every cylinder that key opened, not just the front door. Most businesses underestimate this — a single staff key on a small master often opens the back door, the stockroom and the office. If you have a key register we can tell you exactly which doors are affected in about five minutes.
Will changing one door break our master key?
It will if the new cylinder is not pinned to your chart. Any cylinder bought off a shelf and dropped in will open with its own key only, and the building master will no longer work on that door. We pin to your existing system so it stays whole.
How long does a commercial lock change take?
Cylinder swaps run about five to ten minutes per door once the keys are already cut. A cylindrical lever set is fifteen to twenty-five minutes. A mortise body is thirty to forty-five. A twelve-door plaza with mixed hardware is usually a comfortable half-day.
Can you do the work overnight?
Yes. We run 24 hours a day, 365 days a year including statutory holidays. Overnight attendance carries a premium over a weekday booking, but for a business that trades every day it is usually cheaper than closing.
Related locksmith services in Newmarket
Get a quoted commercial lock change for your Newmarket premises
Tell us the door count and roughly what hardware is on them and we will give you a range on the phone, then a firm figure after the survey. Call 866-820-1331 any hour of any day.
