High Security Locks in Newmarket: What We Fit and How Keys Are Controlled
The hardware we install, how a restricted key is ordered and logged, what drill and pick resistance buys you in minutes, and how a high security cylinder goes into hardware you already own.
Quick answer
A high security lock combines a hardened, pick-resistant cylinder with a patented keyway that no hardware store can copy. In Newmarket that usually means fitting a high security cylinder into the deadbolt or mortise lock you already have, ordering restricted keys against a signed control card, and keeping a register of who holds which key.
This page is the practical one. It covers what actually gets installed on a Newmarket door, how the restricted key side of it works in day to day life, and what fits into hardware you already own.
If you are still deciding whether any of this is warranted for your property, read the high security lock upgrade guide first. That page works through the decision by property type, compares Medeco, Mul-T-Lock, Abloy and Abus, and makes the case that the frame usually fails before the cylinder does. There is no point buying a patented key for a door that opens with a shoulder.
Assuming that decision is made, here is how the work is done. We have been fitting high security locks in Newmarket since 2000, on houses in Stonehaven and Glenway, on rental duplexes near Yonge and Davis, and on small business units along Mulock and Green Lane.
What actually gets installed
In most cases, a cylinder. Not a new lock.
People expect a high security upgrade to mean new hardware on the door. Usually it does not. The security lives in the cylinder, and the cylinder is a modular part. The four formats below cover almost every Newmarket job.
High security euro cylinder
For multipoint entry doors, patio doors and most newer builds. Hardened anti-drill inserts, sacrificial anti-snap section, spool or telescopic pins, and a patented blank. Sized to your door in 5 mm steps so it finishes flush.
High security KIK cylinder
The cylinder that lives inside a standard residential deadbolt. It swaps into the deadbolt you already have, so the finish, the trim and the door are untouched. Cheapest route to a restricted key on a house.
High security mortise or rim cylinder
Threaded mortise cylinders for storefront and older residential doors, rim cylinders for surface-mounted and jimmy-proof locks. Same core, different body and drive.
High security padlocks and cam locks
Shrouded-shackle padlocks for gates, trailers and compound chains, and cam locks for cabinets and server racks, all keyed into the same restricted system as the doors.
The only times we fit a whole new lock body are when the existing hardware is worn out, when the door needs a higher ANSI grade anyway, or when a commercial door has to meet a current standard. In those cases the conversation becomes a hardware replacement that happens to use a high security cylinder.
How a restricted key is ordered, cut and controlled
This is the part that changes how you run a property, and it is the part people underestimate.
A restricted key is a patented blank. The manufacturer does not sell it to hardware stores, kiosks or key-cutting machines in shopping centres. It is distributed only to authorised dealers, and it is cut only against a record. That is the whole mechanism, and it is what makes a key you hand out actually recoverable.
The system is set up in your name
When the cylinders are ordered, a key code and a control card are created against your name and address. The card is the authority. Whoever holds it, or whoever is named on it, is the only person who can order more keys.
You nominate who can order
On a house that is usually one or two people. On a rental or a business it is normally the owner and one manager, listed by name. We keep that list with the code and it is checked every time.
Keys are cut to code, not copied
Additional keys are cut from the recorded code on a machine set up for that keyway, not duplicated from a worn key. That means key number six is identical to key number one rather than a copy of a copy.
Every key is logged
We record how many keys have been issued and when. On a business system we recommend you keep your own register too, one line per key, naming who holds it and the date it was handed over.
Recovering the system is simple
When someone leaves and does not return a key, you do not need to change the locks. You order replacement cylinders on a new code, or in many systems simply have the existing cylinders rekeyed to a new restricted cut. Compare that with the alternative on our rekeying page.
Ordering restricted keys typically takes two to five business days, because the blanks come from the distributor rather than the van. If you need keys urgently, say so when you call and we will tell you honestly what the lead time is.
Drill and pick resistance, in practical terms
Manufacturers publish resistance ratings and they are meaningful, but they are easier to understand as time and noise rather than as grades. A lock does not have to be impossible to attack. It has to be slow enough and loud enough that nobody bothers, or that somebody notices.
Drill resistance
Hardened steel or ceramic inserts sit in front of the pin stacks and in the plug face, and a rotating hardened plate spins under the bit instead of being cut. A standard cylinder is drilled in under a minute. A good high security one either takes many minutes and several bits or defeats the attempt outright.
Pick resistance
Spool and telescopic pins give false sets, and a sidebar or a second row of angled pins means lifting the main stacks correctly still does not release the plug. Raking and bumping stop working entirely. Picking becomes a specialist exercise, not something learned from a video.
Snap and pull resistance
On euro cylinders, a sacrificial break line and a hardened core mean a snapped nose leaves the working part protected in the door. Cylinder guards and security escutcheons stop the nose being gripped in the first place.
Key control
Not resistance at all, but usually the feature that changes real-world outcomes most. Most unauthorised entries into rentals and small businesses involve a key that exists rather than an attack on a lock.
The honest limit is worth stating. None of this helps a door whose frame splits under one kick, and none of it helps a ground floor window. A high security cylinder in a door with a proper box strike and three inch screws is a serious barrier. The same cylinder in a jamb held by short screws is an expensive ornament. That is why we check the frame first, and it is the same argument made on our deadbolt page.
Fitting high security cylinders into hardware you already own
Most Newmarket upgrades are a retrofit, not a rebuild.
The retrofit path is what makes this affordable. Your deadbolt, your handleset, your multipoint gearbox and your storefront mortise lock all keep working. Only the keyed core changes. What has to line up is straightforward, and we check it before ordering.
- Euro doors: the two halves are measured from the centre fixing screw hole so the new cylinder finishes flush. Sizing is covered in detail on our cylinder locks page
- Residential deadbolts: the KIK cylinder has to match the tailpiece drive and the retaining clip used by your lock brand
- Mortise locks: length in quarter-inch steps plus the correct cam shape and clock angle for that maker
- Rim locks: a flat tailpiece cut to length on site, plus a matching backplate
- Multipoint gearboxes: most accept a standard euro cylinder, but a few proprietary units use a non-standard cam and have to be checked before ordering
- Smart and keypad deadbolts: the key override cylinder can often be upgraded, so the mechanical backup is not the weak point. See smart lock installation
- Keying alike: front, back, garage and the padlock on the shed can all run on one restricted key
Fitting itself is quick. A house with three exterior doors is usually finished in under an hour once the cylinders have arrived, including keying them alike and testing every door. The slower part is the order, not the labour.
High security lock prices in Newmarket
These are typical 2026 supply-and-fit ranges. The spread is wide because the difference between an entry-level restricted cylinder and a top-tier patented one is genuinely large, and because commercial systems involve key registers and master keying rather than just parts.
| Job | What it covers | Typical price |
|---|---|---|
| High security euro cylinder, supplied and fitted | Anti-drill, anti-pick, anti-snap core, restricted keys, sized to the door | $220 – $420 |
| High security KIK cylinder into your existing deadbolt | Retrofit, no new lock body, restricted keys | $180 – $320 |
| High security mortise or rim cylinder | Correct length and cam, escutcheon, restricted keys | $200 – $380 |
| Extra restricted keys | Cut to code against your control card | $20 – $45 per key |
| Whole house changeover, three to five cylinders keyed alike | Fit, key alike, keys and control card | $700 – $1,600 |
| Small business on a restricted master key system | Cylinders, master keying, key register set up | from $900 |
Ranges are typical for Newmarket in 2026 and cover parts and labour on a standard door. Overnight, weekend and statutory holiday call-outs carry a premium. A firm price is confirmed on the phone before anyone is dispatched. Restricted cylinders and keys are ordered in and typically take two to five business days.
Why Newmarket calls us first
High security lock fitting across Newmarket and nearby towns
Most of this work happens on detached homes in Stonehaven, Glenway Estates, Summerhill and Woodland Hill, on rental and duplex properties around Central Newmarket and Yonge and Davis, and on small business units along Mulock Drive, Green Lane and Davis Drive. The same service runs to the neighbouring towns from the Newmarket base.
Frequently asked questions
What makes a lock high security rather than just a good lock?
Three things together: a hardened core that resists drilling, a mechanism that resists picking and bumping through spool pins or a sidebar, and a patented keyway so no one can cut a copy of your key without authorisation. A good lock may have one of those. A high security lock has all three, and it is the third that usually matters most day to day.
Do I have to buy a whole new lock?
Usually not. In most Newmarket homes we fit a high security cylinder into the deadbolt, mortise lock or multipoint door you already have. The finish and the trim on the door stay exactly as they are. A new lock body only comes into it if the existing hardware is worn out or a commercial door needs a higher grade.
How does a restricted key stop copies being made?
The blank itself is patented and only sold to authorised dealers. Hardware stores, kiosks and self-service machines do not have it. Additional keys are cut to a recorded code against a control card held in your name, so a tenant, a contractor or a former employee cannot quietly have one made.
How do I get extra keys later?
Call us with the property address. We check the name against the control card, then have keys cut to the recorded code. Turnaround is normally two to five business days. Keys are cut from the code rather than duplicated from a worn key, so the tenth key works as well as the first.
What happens if a tenant or employee does not return a key?
You do not necessarily need new hardware. On most restricted systems the cylinders can be rekeyed to a fresh cut on the same keyway, which invalidates every existing key at a fraction of the cost of new cylinders. That is the practical advantage of a restricted system over ordinary keys.
How long does the work take?
The fitting is quick, usually under an hour for a house with three exterior doors including keying them alike and testing. The waiting is in the order. Restricted cylinders and blanks come from the distributor and typically take two to five business days to arrive.
Is a high security lock worth it on a normal Newmarket house?
It depends on the property, and we would rather you read the reasoning than take our word. Our high security lock upgrade guide works through it by situation, including the cases where the honest answer is that a Grade 2 deadbolt with a reinforced strike is enough.
Can high security cylinders be master keyed for a business?
Yes, and it is one of the better reasons to choose a restricted system. Staff hold keys that open only their own areas, a manager key opens a group, and one master opens everything, all on blanks nobody can copy. We set the hierarchy up with you and keep the code. See master key system installation.
Related locksmith services in Newmarket
Find out what fits your doors before you order anything
Tell us what hardware you have and we will confirm whether a high security cylinder retrofits into it, and what the real lead time is. Call 866-820-1331, any hour.
