You’ve lost your keys and can no longer get into your home—or worse, you’re worried someone found them. Replacing the entire lockset (deadbolt and/or knob/lever set) is the safest solution when keys are lost, stolen, or compromised. In Cicero, IL, where many homes and apartment buildings have standard entry door hardware, lockset replacement is a common and straightforward service.
When keys are lost, simply rekeying the lock may not be enough if the keys were stolen or found in a public place. Replacing the entire lockset ensures that no one with the old keys can access your home. This is especially important for front doors, garage side doors, and any exterior entry point.
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Quick Answer: How Do You Replace a Door Lockset After Lost Keys?
Remove the existing lockset (knob/lever and deadbolt), measure the bore hole sizes and backset, purchase a matching replacement lockset, and install it according to the manufacturer’s instructions. If the existing lockset is damaged or non-standard, you may need a locksmith for rekeying or a custom lockset. For most standard doors, a handyman can complete the replacement in 30–60 minutes.
When to Replace vs. Rekey
Replace the lockset when: Keys were stolen, the lockset is old or damaged, you want to upgrade to a different style or smart lock, or the existing lockset is non-standard and difficult to rekey.
Rekey the lockset when: Keys were simply lost (not stolen), the lockset is in good condition, and you want to keep the existing hardware. Rekeying is typically done by a locksmith and changes the internal pins so the old keys no longer work.
Important note: If there’s any chance the lost keys could be used by someone with malicious intent, always replace the lockset rather than rekey. Rekeying doesn’t address a compromised lock mechanism.
Types of Entry Door Locksets
Knob lockset. A round knob with an integrated latch and key cylinder. Common on older homes and interior doors.
Lever lockset. A lever handle with an integrated latch and key cylinder. More accessible and common on modern entry doors.
Deadbolt. A separate bolt lock that provides primary security. Can be key-operated on both sides or key-on-one-side with a thumb turn inside.
Smart lock. An electronic lock that uses codes, fingerprints, or smartphone apps instead of (or in addition to) keys.
Keyless entry lockset. A lockset that uses a keypad code instead of a key. Common on back doors and side entries.
Can You Replace It Yourself?
Yes, if you have the right tools and the replacement lockset matches your door’s bore holes and backset. Most standard entry doors use a 2-1/8 inch bore hole for the knob/lever and a 1 inch bore hole for the deadbolt, with a 2-3/8 inch or 2-3/4 inch backset. Measure these dimensions before purchasing a replacement.
If your door has non-standard holes, a damaged edge, or you’re unsure about the installation, call a professional. A poorly installed lockset compromises your security.
Tools and Materials Needed
- Replacement lockset. Match the bore holes, backset, and handiness (left/right) to your door.
- Screwdriver. For removing and installing screws.
- Drill and drill bits. If new holes need to be drilled.
- Measuring tape. For measuring bore holes and backset.
- Chisel. For adjusting the edge bore hole if needed.
Step-by-Step: Replacing a Door Lockset
Step 1: Remove the old lockset. Unscrew and remove the interior and exterior halves of the knob/lever and deadbolt.
Step 2: Measure the door. Measure the bore hole diameters, backset distance, and edge bore hole size.
Step 3: Purchase the replacement. Buy a lockset that matches your measurements. Most hardware stores carry common sizes.
Step 4: Install the new lockset. Follow the manufacturer’s instructions. Insert the latch into the edge bore hole, align the interior and exterior halves, and secure with screws.
Step 5: Install the strike plate. Mount the new strike plate on the frame, aligning it with the latch.
Step 6: Test. Operate the lockset several times. The latch should extend and retract smoothly, and the key should turn easily.
When to Call a Professional
The door has non-standard holes. Custom drilling or filling may be needed.
The lockset is mortise-style. Mortise locks require specialized installation.
You need a smart lock. Smart lock installation requires proper alignment and sometimes electrical work.
The door edge is damaged. The door edge may need repair before a new lockset will fit properly.
How a Handyman Replaces It Properly
A professional will assess the door, measure the existing holes, and select a matching replacement lockset. We carry common lockset brands and sizes and can usually complete the replacement in one visit. We also check the strike plate, door alignment, and overall security to ensure the new lockset functions properly.
For Cicero homes and apartments, we commonly replace standard knob and lever locksets with matching or upgraded replacements. If you need a locksmith for rekeying, we can coordinate with a trusted local locksmith.
Cicero, IL: Local Door Repair Service
Cicero is a diverse city on Chicago’s west side with a mix of single-family homes, apartment buildings, and commercial properties. Lockset replacement is a common service, especially after lost or stolen keys. Fast, reliable service ensures your home is secure again quickly.
Lost your keys? Get your lockset replaced today.
We serve Cicero and all surrounding Chicago suburbs. Fast response, fair pricing, quality workmanship.
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FAQ: Lockset Replacement After Lost Keys
Q: How much does it cost to replace a lockset?
A: A standard lockset costs $20–$60 for parts. Professional replacement typically costs $75–$150 including the lockset and labor.
Q: Should I replace both the knob and the deadbolt?
A: If the keys for both were lost, replace both. If only the deadbolt keys were lost, you can replace just the deadbolt.
Q: Can I keep my old keys and just change the lock?
A: That’s called rekeying, and it’s done by a locksmith. If the keys were stolen, replacement is safer than rekeying.
Q: How long does lockset replacement take?
A: Most replacements take 30–60 minutes per lockset.
Q: What if my door has non-standard holes?
A: A professional can adapt the door to fit a standard lockset or source a matching custom lockset.
Q: Should I upgrade to a smart lock?
A: Smart locks are convenient but require proper installation and alignment. A handyman can install most smart locks on standard doors.
Q: Do I need a locksmith for this?
A: A locksmith is needed for rekeying. Lockset replacement is a handyman/carpentry job that doesn’t require locksmith licensing.
Get Your Lockset Replaced Today
Lost keys mean compromised security. Replace your lockset now to ensure your home is safe.
Contact Handy Alek for lockset replacement in Cicero and all Chicago suburbs.
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