The deadbolt that came with your house was chosen to hit a builder's price target, not to stop a determined kick. Upgrading it is one of the cheapest security wins a Denver homeowner can make, but only if you fix the frame at the same time.
Builder-grade deadbolts are picked to pass inspection at the lowest cost, and that shows the first time anyone tests them. The bolt is often shorter than a full one-inch throw, the cylinder is easy to pick or bump, and the strike plate is a thin stamped piece held by two short screws. It looks like a deadbolt. It behaves like a doorstop under real force.
This matters across Denver's split housing stock. The century-old brick homes in Capitol Hill and Five Points often carry original hardware that was never meant for modern threats, while the new stucco-and-frame tracts pushing out toward the suburbs come with the cheapest deadbolt the builder could spec. Either way, the front-door lock is usually the weakest link on a home, and it is the easiest one to fix.
ANSI grades rate a deadbolt's strength and durability on a 1-to-3 scale, and the number is stamped right on the packaging. Grade 1 is the toughest residential rating: it survives the most operating cycles and the hardest strikes. Grade 2 is solid for most homes. Grade 3 is the builder-grade floor, the one we replace more than any other on Denver doors.
For a house, a Grade 1 or strong Grade 2 deadbolt is the right target. The grade reflects bolt strength, cylinder resistance, and how many times the lock can throw before it wears. We break down the testing behind the numbers in the ANSI grade guide. The short version: paying a little more for Grade 1 buys a meaningfully harder door, and the difference is real, not marketing.
The strike plate is where most break-ins are actually won or lost, and it is the part homeowners overlook. A burglar rarely defeats the bolt itself. They kick beside it, and the screws holding a flimsy strike tear out of the soft jamb wood, splitting the frame and swinging the door open. The lock stayed locked. The wood failed.
The fix costs almost nothing and changes everything. Swap the thin strike for a heavy box strike or a reinforced plate, then anchor it with three-inch screws that drive past the jamb into the framing stud behind it. Now a kick lands against the house, not against two half-inch screws. We add this on nearly every deadbolt upgrade, and it is the same reinforcement we install on break-in repairs after the frame has already given way once.
A deadbolt install usually runs $100 to $250 with the hardware included, and the figure depends on the lock grade and whether the door needs prep. A straightforward swap on a properly bored door is near the low end. Boring a new hole, fitting a stubborn old door, or installing a high-grade lock pushes higher. A reinforced strike is a small add-on, not a separate trip.
If you want every lock on the same key, or a clean new key nobody else holds, a full home rekey usually runs $150 to $300 across four to six cylinders. We can do the deadbolt upgrade and the rekey on one visit. Cold matters here too: a worn or poorly lubricated bolt drags worse through a Front Range winter, so an upgrade is a good moment to set the whole door right rather than fight a sticky lock again in January.
Any home with its original builder hardware is a candidate, but a few situations make it urgent. Just moved in? You do not know who holds a copy of the old key, so a rekey or new deadbolt should happen before you unpack. After a break-in or attempted entry, the frame and lock both need attention. And if your bolt no longer throws fully or the key fights the cylinder, the lock is telling you it is near the end.
The metro's housing split shapes the call. Mid-century ranch and split-level stock in Lakewood often runs on aging hardware overdue for replacement, while the newer master-planned tracts in Arvada come with cheap deadbolts straight from the builder. In both cases the upgrade is the same idea: a better bolt, a reinforced strike, and a door that finally holds. We assess the door first so the quote matches the work.
A deadbolt install usually runs $100 to $250 with the hardware included, and the spread depends on the lock grade and whether the door needs prep. Adding a reinforced strike plate is a small extra. A full home rekey to match a new deadbolt to your existing keys usually runs $150 to $300. We quote it all before we start.
For a Denver home, an ANSI Grade 1 or strong Grade 2 deadbolt is the sweet spot. Grade 1 is the toughest residential rating and survives the most cycles and force. Grade 3, the builder-grade default on many doors, is the weakest and the one we replace most. The grade is stamped on the packaging, so check before you buy.
Not by itself. Most forced entries split the door frame beside the bolt, not the bolt. A top deadbolt seated in a weak strike plate held by short screws still gives way to a kick. Pair any deadbolt upgrade with a reinforced strike and three-inch screws into the wall stud. That combination is what actually holds.
Usually yes, but it depends on the door. We bore a new hole for the cylinder and the bolt, then fit the strike into the jamb. Solid-core and metal doors take a deadbolt well. Hollow-core interior-style doors are weak hosts and may need replacing first. We assess the door before quoting so there are no surprises mid-install.
Most homeowners want to, and we can key a new deadbolt to your current house key so you do not carry a second key. Right after moving in, the better move is rekeying everything to a fresh key nobody else holds. We can do either on the same visit, matching to old keys or setting a clean new key across every lock.
A better bolt is only half the job. We pair every upgrade with a reinforced strike and long screws into the stud, so the door holds. Hardware included in the quote, insured, local crew.
Last updated: May 28, 2026.
