Deadbolt Replacement That Fits the Holes You Already Have

When deadbolt replacement beats a repair

People often assume any deadbolt off the shelf will drop into any door. Most of the time that is close to true, which is exactly why the exceptions cause so much trouble. Before the measuring, though, decide whether the lock should come out at all.

Deadbolt replacement is the better path when:

• The lock has been forced. Pry marks on the trim, a bent bolt or a housing that has cracked or shifted mean the metal has given way somewhere. Parts can be swapped, but you no longer know what else is stressed.
• The cylinder is worn out. Schlage's own troubleshooting guide says that when a key sticks or turns hard after the lock has been in use for a while, a replacement cylinder is required. If that cylinder is not sold separately for your lock, or the rest of the lock is worn too, a complete new deadbolt is the practical fix.
• The lock is underrated for the door. A basic builder-grade lock on the main entry is a common reason to move up.
• You want features the old lock cannot add, such as a keypad or app control. That is a smart deadbolt installation, and it usually uses the same holes.
• The finish has failed. Pitted or peeling trim on an otherwise working lock is a cosmetic reason, but a fair one on a front door.

If the lock is sound and only one part misbehaves, a deadbolt repair visit is cheaper. If the only problem is who holds a key, rekeying the cylinder you have solves it without new hardware.

What has to match for a drop-in swap

A clean deadbolt replacement depends on the new lock fitting the door prep that is already there. Measure these before buying anything.

The adjustable latch is what makes most swaps easy. Yale's Everly and Schlage's B60, for example, set to either common backset, so one box covers both.

Faceplate corners are the detail most people miss. Yale specifies radius corners on the Everly latch. If your door edge has a square recess, a rounded plate leaves small gaps at each corner, which looks sloppy even though it works. If your door has no deadbolt at all, this page is the wrong one: that job is a new deadbolt installation, with drilling from scratch.

Upgrading the rating during a deadbolt replacement

Since the holes are already there, the swap is the cheapest moment to move up in quality. To compare locks, it helps to know that two different scales show up on packaging.

• ANSI/BHMA A156.40 (residential deadbolts) rates each lock A, B or C, separately, for security, durability and finish. A is best, C is good. A lock rated AAA earned the top rating in all three.
• ANSI/BHMA A156.36 (auxiliary locks) is where deadbolt Grades 1, 2 and 3 come from.

The two can appear on one box. Schlage lists its B60 as A156.40 Grade AAA and A156.36 Grade 1. BHMA's public summary of the current A156.40 says a Grade A lock must pass 400,000 cycles and 17 security tests, including one that puts 1,350 pounds of force on the door against the bolt.

Some boxes cite yet another standard. Kwikset's 660 spec sheet, for example, lists ANSI/BHMA A156.2 Grade 3. When labels do not line up, BHMA's free Certified Products Directory shows what a product is actually certified to. Our explainer on deadbolt grades goes through both scales in detail, and doors that need pick and drill resistance belong in high security deadbolt territory.

Matching the finish with your knob or handleset

Finish is the part of a deadbolt replacement homeowners notice every day. Names are not standardized between brands, so "satin nickel" from one maker can look warmer or grayer than the same name from another.

The closest match comes from staying with the brand and finish line already on the door. If that is not possible, compare samples in daylight at the door, not under store lighting.

Handlesets need extra care. They are drilled to their own template, and the deadbolt is often part of the set, so a standalone deadbolt may not line up with the grip or match it. We look at the handleset before ordering and tell you whether a single deadbolt will work or the set should be replaced together.

Keys after the swap

A new lock arrives with its own keys. By default, locks bought together each need a different key, so a replacement can leave you with one more key on the ring than before.

You can avoid that. If the new cylinder uses the same keyway as your other locks, it can be pinned to your existing key during the visit, or all the locks can be set to one new key. Our page on keyed alike deadbolts explains how keyways decide what can share a key.

How a replacement visit runs

1. 01

   Confirm the fit

   We check backset, bore, door thickness and faceplate shape against the new lock before the old one comes out.

2. 02

   Remove and inspect

   The old lock comes off and we look at the bore, the edge recess and the strike for damage or wear.

3. 03

   Fit the new lock

   The latch is set to your backset, the bolt and trim go in, and the cylinder is keyed as agreed.

4. 04

   Set the strike

   We align the strike with the bolt, check the pocket depth and replace short screws with ones that reach the framing.

5. 05

   Test with the door closed

   The bolt has to throw and retract smoothly with the door shut, from both sides, with every key.

Deadbolt replacement cost factors

The lock itself is the biggest variable, followed by keying, any strike or frame work and the time of the visit. This Old House (2026, Homewyse data) puts a typical lockset at $146 to $229 for the hardware plus $91 to $194 for labor, and notes that deadbolt replacement typically costs more than a standard lockset.

Those are national figures that vary by location. The deadbolt cost guide breaks down how quotes for each job are built.

A simple rule: keep, rekey or replace

If the lock turns smoothly and the only problem is who has keys, rekey it. If one part fails on an otherwise solid lock, repair it.

Replace it when any of the metal has been forced, the key binds even after a cleaning, or the lock is a basic model on a door you rely on. And whichever lock you choose, budget for strike screws that reach the framing, because the new lock deserves a frame that can hold it.