- Residential Lockout Guide
Rekeying vs Replacing Locks: Which One Do You Actually Need?
- Locksmith Urbana IL
- 8 min read
- Urbana, IL. 61801 / 61802
The distinction matters more than most guides acknowledge, because the right choice depends entirely on the condition and quality of your existing hardware.
Rekeying changes the internal configuration of your existing lock cylinder without touching the hardware on your door. A licensed locksmith removes the cylinder, disassembles the plug, and replaces the key pins (the small metal pins inside the cylinder that correspond to your key’s cut pattern) with pins of different heights. The result is a lock that works with an entirely new key and renders every existing key useless. The deadbolt, knob, strike plate, and all exterior hardware stay exactly as they were.
Replacing removes the entire lock from the door and installs new hardware. This includes the cylinder, the bolt mechanism, the interior and exterior trim, and in some cases the strike plate. It takes longer, costs more, and is the right call when the existing hardware is the problem rather than just key control.
Stop and Do a 60-Second Check Before You Call Anyone
The single most common mistake in a nighttime lockout is reaching for the phone before doing a quick perimeter check. It feels urgent, but 30 seconds of checking can save you a service call.
Walk the full exterior of your home. Check the back door, side entry, and any door that leads through a garage. Ground-floor windows are worth a look too, particularly if one was left open earlier in the evening. A significant number of lockouts in residential areas near the UIUC campus resolve this way, especially in warmer months when windows and secondary doors get left unlatched.
If you share your home with a roommate, partner, or family member, call or text them before anything else. In Campustown and student housing near Green Street, a spare key holder a few blocks away is often the fastest solution.
Rekey or Replace: The Decision Grid for Every Common Scenario
Every competitor article on this topic gives you a prose description. None of them give you a side-by-side reference. Here is the full breakdown for the situations Champaign County residents actually face.
✓ Rekey When
→ Replace When
Cost Breakdown for Urbana IL and Champaign County
The cost per cylinder difference between rekeying and replacement is significant enough that it drives the decision for most homeowners and landlords in Champaign County.
| Service | Type | Cost Per Lock | Notes |
|---|---|---|---|
|
Single cylinder rekey |
REKEY |
$20–$50 |
During same visit as lockout or service call |
|
Standalone rekey appointment |
REKEY |
$80–$170 |
Includes service call fee + per-lock cost |
|
Whole-home rekey (3–5 locks) |
REKEY |
$120–$250 total |
Single visit, all keyed alike if requested |
|
Standard residential replacement |
REPLACE |
$85–$200 |
Kwikset or Schlage, parts + labor |
|
Grade 1 / high-security upgrade |
REPLACE |
$250–$500 |
Medeco, Mul-T-Lock, Schlage B-series |
|
Smart lock / keypad installation |
REPLACE |
$200–$450 |
Depends on brand and wiring requirements |
Prices reflect typical Champaign-Urbana market rates as of 2026. Always confirm full price before work begins.
💡 Landlord Calculation
A three-bedroom rental near Campustown with four lockable entries: rekeying all four runs roughly $150 to $250 total. Replacing all four with equivalent hardware runs $400 to $700. If the hardware is in good condition, the security outcome is identical. The only difference is key control, which rekeying achieves at a fraction of the cost.
What Illinois Law Requires for Urbana Landlords
This section appears nowhere in any competitor locksmith article for the Champaign-Urbana market, and it matters directly to anyone managing rental property in this area.
⚖️ Illinois Law: 765 ILCS 735/1
Landlords are required to rekey or change locks between tenants before the new tenant takes possession of the dwelling. The statute covers any change that renders the former tenant’s key useless, which means rekeying fully satisfies the requirement. Full replacement is not necessary unless the hardware itself is damaged or the landlord chooses to upgrade.
The Urbana Landlord-Tenant Ordinance (Chapter 12.5) adds local specificity. Urbana landlords who fail to comply with the lock change requirement before a new tenant takes possession are liable for any theft or property damage that occurs as a result. This is a direct financial liability, not a theoretical one.
Champaign-Urbana has one of the highest rental turnover rates in Illinois due to UIUC’s academic calendar. The August and September move-in window creates concentrated scheduling demand for rekeying services across hundreds of units simultaneously. Landlords who wait until move-in week to schedule rekeying consistently face delays. The practical solution is booking rekeying appointments in July, while the outgoing tenant’s lease is still active but the unit is being prepared for turnover.
⚖️ Illinois Safe Homes Act: 765 ILCS 750
According to Illinois safe homes act a tenant who is a victim of domestic violence has the legal right to request an emergency lock change within 48 hours of providing documentation to the landlord. The landlord must comply within that window. Rekeying satisfies the requirement and is typically faster and less disruptive than full replacement. This statute applies to all rental properties in Champaign County.
What Most Rekeying vs Replacing Guides Don't Tell You
- Not every lock can be rekeyed. Certain budget lock brands use proprietary pin systems that standard rekeying kits cannot accommodate. Severely worn cylinders with damaged plug faces or broken springs cannot accept new pins reliably. Some older locks found in Downtown Urbana’s vintage apartment stock use skeleton key or warded mechanisms that have no pin system to rekey at all. Before assuming you can rekey your existing hardware, a licensed locksmith should confirm the brand and condition of the cylinder on site. Calling a locksmith and assuming rekey will work without checking first can result in a same-day change of plan and a higher bill than expected.
- Lock brand compatibility matters for keying alike. Kwikset locks can only be keyed alike with other Kwikset locks. Schlage locks can only be keyed alike with other Schlage locks. If you have a property with mixed brands across multiple doors, a locksmith either replaces the cylinders with matching brand hardware or installs all-new matching locks. This is a common discovery in older Champaign County rental properties where hardware has been replaced piecemeal over years. Know your brands before booking the appointment.
- The security level stays the same after a rekey. Rekeying restores key control but does not change the security grade of the lock. A builder-grade lock remains a builder-grade lock with new keys. If your reason for changing access is a security concern rather than key control, ask your locksmith to assess the grade and condition of your current hardware at the same visit. The cost difference between rekeying a Grade 2 lock and upgrading to an ANSI Grade 1 deadbolt is often $60 to $100 per door.
- Replacing a lock does not automatically mean it is rekeyed. A new lock from a retail store is not uniquely keyed at the point of sale. Multiple units of the same model use the same factory keys. For rental properties in Urbana with high foot traffic and frequent tenant changes, rekeying a newly installed lock immediately after installation is the correct procedure. A licensed locksmith completing a replacement should include a rekey of the new lock as part of the job, or clearly explain that it has not been done.
Frequently Asked Questions
Rekeying is almost always cheaper. Rekeying a single cylinder in Champaign County runs $20 to $50 per lock plus a service call fee. Full lock replacement runs $85 to $200 per lock for standard residential hardware, not including the service call. If the existing hardware is in good condition, rekeying delivers the same key control outcome at a fraction of the cost.
Yes, in most cases. Rekeying only changes the internal pins inside the cylinder. The lock body, deadbolt, and all exterior hardware remain on the door. The exception is locks that are mechanically worn, damaged, or built with proprietary pin systems that standard rekeying kits cannot accommodate. A licensed locksmith can confirm on site whether your specific lock is rekeyable.
Rekeying is the right response to a lost key, not full replacement, unless the lock itself is also damaged or you were planning a security upgrade anyway. Rekeying renders the lost key permanently useless and costs significantly less than replacement. If the lost keys were attached to identification showing your address, treat it as a higher-priority situation and have the rekey done the same day.
A new lock from a retail store is not uniquely keyed at the point of sale. Multiple units of the same model use the same factory keys. For a primary residence or rental property, rekeying a newly installed lock immediately after installation is the correct procedure. A licensed locksmith completing a replacement should include a rekey or clearly inform you it has not been done.
Yes. Illinois law (765 ILCS 735/1) requires landlords to rekey or change locks before a new tenant takes possession. The Urbana Landlord-Tenant Ordinance (Chapter 12.5) adds local liability: if you fail to comply and a theft occurs, you may be financially responsible for the damages. Rekeying fully satisfies this requirement without the cost of full replacement.
Under 765 ILCS 750, a tenant who is a victim of domestic violence has the right to request an emergency lock change within 48 hours of providing documentation to the landlord. The landlord must comply within that window. Rekeying satisfies the requirement and is typically faster and less disruptive than full replacement. This statute applies to all rental properties in Champaign County.
No. WD-40 is a water displacer and light solvent, not a lubricant. Spraying it into a lock cylinder temporarily loosens sticking but leaves a residue that attracts dust and debris, which accelerates cylinder wear over time. The correct lubricant for a lock cylinder is a dry graphite spray or a purpose-made lock lubricant like Tri-Flow. If your lock is sticking significantly despite lubrication, the cylinder may be worn and require professional assessment rather than repeated lubrication.
✅ Key Takeaways
Rekeying vs replacing locks is primarily a question of hardware condition and security goals. If the lock works well and you only need to change who has a working key, rekey. If the hardware is worn, damaged, or you want a genuine security upgrade, replace.
Illinois law requires landlords to rekey or change locks between tenants, and Urbana’s local ordinance adds financial liability for non-compliance. For most rental properties in Champaign County, rekeying satisfies this obligation faster and at lower cost than replacement.
Not every lock can be rekeyed. Brand compatibility, cylinder condition, and lock age all affect whether rekeying is possible. A licensed locksmith should assess the hardware before the decision is finalized.
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