How much does deadbolt installation cost?
Deadbolt installation often costs $100 - $350+ per lock. It is cheaper when the door is already bored and aligned; it costs more when the locksmith must drill fresh holes, fit a new strike plate, reinforce the frame, or install higher-grade hardware.
A deadbolt is only useful if the bolt throws fully into a solid strike. A misaligned strike plate or weak short screws can make a new lock feel secure without adding much protection.
Deadbolt cost by scope
Replace existing deadbolt
$100 - $200 plus hardwareHow to tellSame bore, same backset, door closes cleanly
The fixSwap hardware and test latch/bolt operation
Add deadbolt to prepped door
$125 - $250 plus hardwareHow to tellDoor has existing deadbolt bore but no lock installed
The fixInstall lock, latch, strike plate, and keys
New bore and strike prep
$200 - $350+ plus hardwareHow to tellDoor never had a deadbolt or holes are wrong
The fixMeasure, drill, mortise latch/strike, and align bolt
Reinforced strike or smart deadbolt
$250 - $500+How to tellExterior security upgrade, keypad/smart lock, or weak frame
The fixInstall better strike hardware, longer screws, or connected lock setup
Before adding a deadbolt
- Check if the door already has a deadbolt bore above the knob.
- Measure whether the door closes without lifting or pushing. Alignment problems should be fixed first.
- Ask what hardware grade is being installed and whether frame reinforcement is included.
- For rentals, condos, or HOAs, confirm whether hardware changes need approval.
Unlock the hiring checklist
Use this before you call a locksmith, so you know what to ask and what to avoid.
Call a pro when…
- The door needs a fresh deadbolt hole drilled
- The strike plate does not line up cleanly
- The door or frame is metal, fiberglass, old, warped, or expensive to replace
- You want a smart deadbolt or keypad installed without binding
Deadbolt vs smart lock
A standard deadbolt is usually the simplest security upgrade. A smart deadbolt adds codes, app control, access logs, and auto-locking, but it still depends on the same physical alignment. If the door is out of square, fix the fit before blaming the lock.
Need a cleaner scope before you call around?
Use the locksmith checklist to compare the same work, questions, cleanup, and warranty before choosing a local company.
Related questions
Can a deadbolt be installed on any exterior door?
Most wood, fiberglass, and metal exterior doors can accept a deadbolt, but door thickness, stile width, glass placement, and frame condition matter.
What makes deadbolt installation expensive?
Fresh drilling, mortising, misaligned doors, reinforced strike plates, smart hardware, and high-grade locks add time and parts.
Should the strike plate be reinforced?
For exterior doors, longer screws into framing and a stronger strike plate are usually worth discussing. The deadbolt needs a strong frame path, not just a shiny lock.
Can a handyman install a deadbolt?
Simple replacements may be fine, but use a locksmith or door pro when drilling, alignment, exterior security, or smart hardware is involved.