Lock Installation and Replacement
Old, worn, or damaged locks are one of the easiest security upgrades to make. We install and replace deadbolts, knob locks, lever handles, and commercial-grade hardware.
Problems we solve
- The front-door deadbolt is loose or worn out.
- You want to add a deadbolt where there's only a knob.
- The lock was damaged in a break-in attempt.
- You're changing hardware finishes across the house.
- You want higher-security locks on exterior doors.
What this service covers
Lock installation means fitting new hardware into a door, either replacing an existing lock or adding one where a hole has to be drilled. We measure carefully so the new hardware sits flush, aligns with the strike, and operates smoothly.
Common situations
- Deadbolt install on an entry door
- Replace worn front-door knob and deadbolt
- Upgrade exterior locks to higher-security cylinders
- Commercial lever handle replacement
How it works
- 1
Choose hardware
We help you pick locks that fit your door and security goals.
- 2
Estimate
You approve the parts and labor before we start.
- 3
Install and align
Bolts, strikes, and screws are set correctly for smooth operation.
- 4
Test
We test the lock repeatedly to confirm it works with your door and frame.
Why it matters
- Doors that actually lock cleanly
- Better-fitted hardware means less wear
- Options across price points
Frequently Asked Questions
Should I install a deadbolt if I already have a knob lock?
Do you bring locks with you or do I buy them?
Can you install a deadbolt on a door that doesn't have one?
Can you match the finish across multiple doors?
Ready to book lock installation and replacement?
Call (815) 446-1440 or request service online. Same Day Locksmith is a mobile locksmith service. We travel to customers throughout our service area and do not operate a walk-in storefront.
Service hours: 7:00 AM – 11:00 PM, every day. Illinois Locksmith License No. 191.000919.
