Front Door Lock Installation Newmarket
Deadbolts and handlesets fitted properly: correct backset, full one-inch throw, reinforced strike and three-inch screws into the stud behind the jamb.
Quick answer
Front door lock installation in Newmarket means fitting a deadbolt and handleset to the right backset and bore, setting the strike so the bolt throws its full inch into the frame, and anchoring that strike with three-inch screws into the stud. Supplied and installed runs about $145 to $340 depending on whether the door is already bored.
A front door lock installation in Newmarket takes between forty minutes and two hours, and the difference between a good one and a bad one has almost nothing to do with the lock you bought. It has to do with what is behind the strike plate.
Here is the uncomfortable part. You can spend three hundred dollars on a Grade 1 deadbolt, screw it into a factory strike held by two three-quarter-inch screws biting into soft pine, and a determined shoulder will still take the door out of the frame in one hit. The lock will be perfectly intact, dangling in a chunk of splintered jamb. We see it after break-ins constantly.
So this page is about the whole assembly: what the ANSI grades actually mean, how long the bolt should throw, why the screws matter more than the brand, and what is involved when a door has never had a deadbolt in it at all.
Grade 1, Grade 2 and Grade 3 in plain language
ANSI/BHMA grades are a lab test, not a marketing badge. Here is what the numbers mean in practice.
| Grade | Roughly what it survives | Where it belongs |
|---|---|---|
| Grade 1 | Ten strikes from a heavy impact test, 250,000 cycles, and the highest bolt-strength rating | Front doors, any door onto a laneway or side yard, rental units |
| Grade 2 | Five impact strikes, 150,000 cycles | Perfectly adequate for back, side and garage man-doors on a normal house |
| Grade 3 | Two impact strikes, 100,000 cycles | Builder-grade. Fine on an interior or shed door. Not a front door lock. |
The practical takeaway: a good Grade 2 deadbolt properly installed beats a Grade 1 deadbolt badly installed, every single time. If your budget is fixed, spend it on a Grade 2 bolt plus a reinforced strike rather than a Grade 1 bolt on a factory strike.
Grade 1 residential deadbolts are still worth the extra thirty or forty dollars on the front door itself, and a few brands do it well. Schlage B60 and B62 deadbolts are the ones we fit most often when a homeowner asks for the best mechanical bolt without going into high-security territory.
Grades measure the lock body and bolt in a test frame. They say nothing about the door or the jamb it is fitted to, which is where most real failures happen.
Throw length, strike plates and the three-inch screw
Open your front door and throw the deadbolt. Measure from the face of the door to the tip of the bolt. Anything under one inch is a Grade 3 builder bolt and it barely reaches into the frame. A full one-inch throw puts steel deep enough into the jamb that the bolt has to be sheared rather than levered.
Then take the strike plate off. Most Newmarket subdivision builds — Woodland Hill, Summerhill Estates, the Bristol-London infill — came with a thin stamped strike and two screws under an inch long, holding into finger-jointed pine trim. That trim is not structural. The stud sits about an inch behind it, sometimes more, with a shim gap in between.
Swapping those short screws for three-inch screws that reach through the shim and bite into the stud costs about four dollars and roughly triples the force needed to kick the door in. Add a box strike — a heavy plate with a formed pocket, four screw holes and a longer footprint — and you have made the single most cost-effective security upgrade available to a homeowner. It is a $45 to $85 job if we do it, and it is the first thing we do on any front door install.
- Bolt should throw a full 1 inch (25 mm) with the door open
- Strike screws should be 3 inches (75 mm) and hit the stud, not the trim
- Box or security strike rather than a flat stamped plate
- Hinge screws on the top hinge replaced with 3-inch screws too — doors get levered from the hinge side as well
- Bolt should throw freely with the door closed; if you have to lift or pull the door, the strike is misaligned
- Latching knob or lever is not a lock. It is a door catch.
Backset, bore size and fitting a bolt to a door that never had one
Two measurements decide whether a lock will fit your door. The bore is the big hole through the face — the North American standard is 2-1/8 inches, with a 1-inch hole through the edge for the bolt. The backset is the distance from the edge of the door to the centre of that bore. It is either 2-3/8 inches or 2-3/4 inches, and it is not optional; most retail deadbolts ship with an adjustable latch that covers both, but plenty do not.
If your door is already bored, installation is straightforward. Old lock out, new bolt in, strike aligned, screws driven, cylinder tested from both sides with the door open and then closed. Forty minutes on a normal door.
Fitting a deadbolt to a door that has never had one is a different job. It needs a boring jig clamped square to the door, a 2-1/8 hole saw through the face and a 1-inch auger through the edge, both of which have to be perpendicular or the bolt will bind forever. Then the jamb has to be mortised for the strike and drilled through to accept the full bolt throw. Done freehand with a drill and a prayer, this is how doors get ruined. Done with a jig it is clean, and it is why the price runs $210 to $340 rather than $145.
Metal-clad and fibreglass doors need extra care — the skin will tear if the hole saw is pushed. Older solid wood doors on the century homes off Main Street South often have a bore that is out of standard entirely, and those sometimes need a wrap plate to cover the previous hardware footprint.
Handleset or a separate deadbolt?
A handleset is the tall decorative plate with a thumb latch and a deadbolt above it, sold as one matched unit. A separate deadbolt is a plain bolt above a standard knob or lever. Security-wise they are identical — a handleset deadbolt is the same mechanism in a prettier package.
Handleset
Looks better on a front door and matches trim finishes. Costs $180 to $500 for the set. Downside: if one piece fails you often have to replace the whole assembly, and the fixed strap ties you to that manufacturer.
Separate deadbolt and lever
Cheaper, easier to service, and you can mix a Grade 1 bolt with a modest lever. This is what we recommend on side, back and garage man-doors, and on rentals.
Single vs double cylinder
Double cylinder needs a key on both sides. Only worth it where glass sits within reach of the thumbturn. It is a fire-exit trade-off, so the key lives on a hook near the door, never in the lock.
Keyed alike
Whatever you choose, have it keyed to match the rest of the house on the same visit. A front door on its own key is how spare keys end up under flowerpots.
One more thing that gets asked a lot: matching a new front door lock to your existing keys. If the rest of the house is on a common keyway, we can usually key the new cylinder to your current key so nothing else changes. If not, we rekey the other doors during the same call so the whole house ends up on one key.
Front door lock installation prices in Newmarket
| Job | Included | Typical range |
|---|---|---|
| Deadbolt swap, existing bore | Grade 2 deadbolt, keys cut, strike aligned | $145 – $260 |
| Grade 1 deadbolt, existing bore | Grade 1 bolt, box strike, 3-inch screws | $190 – $300 |
| New bore in an unprepped door | Jig, face and edge bore, jamb mortise, bolt | $210 – $340 |
| Handleset and deadbolt set | Matched set fitted and keyed alike | $240 – $460 |
| Strike reinforcement only | Box strike, 3-inch screws, hinge screws | $45 – $85 |
| Double-cylinder conversion | Keyed both sides, existing bore | $170 – $290 |
| Install-only, your hardware | Labour and alignment, you supply the lock | $110 – $190 |
| Add second door, same visit | Any of the above on an additional door | $70 – $180 |
Ranges are typical for a Newmarket address in 2026 and cover labour plus standard hardware. Overnight, weekend and statutory holiday call-outs carry a premium. A firm price is confirmed on the phone before anyone is dispatched.
Why Newmarket calls us first
Doors we fit across Newmarket and nearby
Front door work runs across Newmarket and out into Aurora, East Gwillimbury, Holland Landing, Sharon, Keswick, Bradford and Mount Albert. Steel-skinned insulated doors on the 1990s subdivisions, fibreglass on the newer builds, and solid wood on the older Main Street South and Quaker Hill houses — each takes a slightly different approach to boring and strike prep.
Frequently asked questions
How much does front door lock installation cost in Newmarket?
A deadbolt supplied and fitted into an existing bore is $145 to $260, or $190 to $300 for a Grade 1 bolt with a box strike. Boring a door that has never had a deadbolt runs $210 to $340 because of the door prep involved. Install-only with your own hardware is $110 to $190. After-hours calls carry a premium.
What is the difference between Grade 1 and Grade 2 deadbolts?
Grade 1 survives ten strikes in the ANSI impact test and 250,000 operating cycles; Grade 2 survives five strikes and 150,000 cycles. On a front door Grade 1 is worth the extra thirty or forty dollars. On back and garage doors Grade 2 is genuinely fine. Grade 3 is builder hardware and should not be on any exterior door.
Are three-inch screws in the strike plate really that important?
Yes, and it is not close. Factory strikes use screws under an inch that bite only into the pine trim around the frame. Three-inch screws pass through the shim gap into the structural stud behind. That one change dramatically raises the force needed to kick a door in, and it costs a few dollars in parts. It is the cheapest real security upgrade available.
How long should my deadbolt throw?
A full one inch, 25 mm, measured from the face of the door to the tip of the bolt with the door open. Many builder-grade bolts throw only five-eighths to three-quarters of an inch, which leaves very little steel inside the frame. If the bolt only throws part way with the door closed, the strike is misaligned and the door is far weaker than you think.
Can you put a deadbolt on a door that does not have one?
Yes. It needs a boring jig, a 2-1/8 inch hole saw through the face and a 1 inch auger through the edge, both square to the door, plus a mortise and through-hole in the jamb. On steel and fibreglass doors the skin has to be cut rather than pushed. Budget $210 to $340 and about ninety minutes.
What backset does my door have?
Measure from the edge of the door to the centre of the existing hole. It will be either 2-3/8 or 2-3/4 inches. Most modern deadbolts ship with an adjustable latch that handles both, but some designer and smart lock bolts are fixed to one, which is a common reason a lock bought online does not fit.
Should I get a double-cylinder deadbolt?
Only where there is glass within arm’s reach of the thumbturn — a sidelight, a glazed panel in the door itself. Everywhere else it is a needless fire-exit hazard. If you do fit one, keep the inside key on a hook beside the door, high enough that it cannot be reached through broken glass, and make sure everyone in the house knows where it is.
Can the new front door lock match my existing keys?
Usually. If your other doors are on a common residential keyway, we cut the new cylinder to your existing key on site. If the keyways are incompatible we rekey the rest of the house to the new key on the same visit, which is $25 to $45 per additional cylinder. Either way you leave with one key.
Related locksmith services in Newmarket
Get a front door lock fitted properly
Call 866-820-1331. Tell us the door material and whether it already has a deadbolt, and we will quote the job before we leave the yard.
