how-to
How to Rekey Rental Units: A Step-by-Step Guide
Table of Contents
- Why Rekeying Rental Units Matters
- Landlord Lock Change Laws and Compliance
- Rekeying vs. Replacing Locks: Which Option Is Right
- Step-by-Step Guide to Rekeying Rental Units
- Cost to Rekey Locks for Rental Property
- Smart Lock Benefits for Landlords
- Security Liability and Key Control for Rental Units
- Frequently Asked Questions
Last Updated: September 3, 2026
Why Rekeying Rental Units Matters
Rekeying rental units is a critical security step between tenants. When a tenant moves out, you lose control over who holds key copies. Former tenants, their friends, family, or anyone they've shared keys with could access your property, creating significant liability and security risk.
Rekeying is a practical, cost-effective solution that restores key control without replacing entire lock hardware. By changing the internal pins and springs of existing lock cylinders, old keys no longer work, and only new keys you distribute provide access.
This is especially critical for property managers overseeing multiple units. Managing master key systems, tracking key distribution, and preventing cross-unit access all depend on proper rekeying protocols. A single oversight can compromise your entire portfolio's security.
Landlord Lock Change Laws and Compliance
State and local laws govern when and how landlords must handle lock changes. While federal law doesn't mandate rekeying, many states have specific statutes addressing landlord responsibilities for tenant security and access control. Understanding your jurisdiction's requirements is essential to staying compliant and avoiding legal liability.
Most states recognize the landlord's right to change locks between tenants. However, some jurisdictions have rules about notice requirements, timing, and whether locks must be changed before new tenants move in. A few states also limit when landlords can change locks on occupied units, typically requiring proper notice or specific reasons like non-payment.
"Key control", the landlord's ability to ensure only authorized people have access, is central to most landlord-tenant laws. Failing to maintain proper key control exposes you to liability if unauthorized access causes damage or harm. Documentation is critical: keep records of when locks were changed, who received keys, and when keys were returned.
Consult your state's landlord-tenant act or contact a local property management attorney to understand specific requirements in your area. Laws vary significantly by jurisdiction, and compliance protects you from legal disputes and damages claims.
National Apartment Association landlord-tenant law resources
Rekeying vs. Replacing Locks: Which Option Is Right
The decision between rekeying and replacing locks depends on your existing hardware's condition, security goals, and budget. Both restore key control but have different applications.
Rekeying involves changing the internal pins and springs so old keys no longer function while keeping existing hardware in place. This is cost-effective and fast for routine turnovers when locks are in good condition. If you have consistent lock types across units, rekeying creates a standardized key management system.
Replacing locks means installing entirely new hardware. This is necessary when locks are damaged, worn, or outdated. If a lock has been picked, forced, or damaged, replacement is safer. Replacement also allows upgrades to higher-security or smart locks.
A practical approach is to rekey functional locks between tenants and replace locks only when they show damage, security is compromised, or you're upgrading hardware.
Step-by-Step Guide to Rekeying Rental Units
Rekeying requires precision and proper tools. Whether you're doing this yourself or hiring a professional locksmith, understanding the process ensures it's done correctly.
Step 1: Assess Your Lock Hardware
Examine the lock on the rental unit and identify its type and manufacturer. Most residential rental locks are standard pin-tumbler deadbolts made by Schlage, Kwikset, or Master Lock. Check for damage, rust, or wear. If the lock is damaged or difficult to operate, replacement may be more practical than rekeying.
Verify that locks are keyed-alike across units if you use a master key system. Document the current lock type and condition for your records.
Step 2: Gather Tools and Materials
Rekeying requires a rekeying kit matching your lock manufacturer, typically including a plug follower, tweezers, springs, and new pins. You'll also need a screwdriver, small flashlight, and new key blanks. Professional locksmiths use specialized kits designed for specific lock types. Purchase a kit matching your lock manufacturer if handling this yourself.
Step 3: Remove and Disassemble the Lock Cylinder
Remove the lock by unscrewing the mounting screws on the interior side. Insert the old key and turn it to the "open" position. Use the plug follower to carefully push the lock plug out of the housing, preventing springs and pins from ejecting. Empty the old pins and springs into a container and inspect the housing for damage.
Step 4: Replace the Pins and Springs
The pins inside a lock correspond to key cuts. When rekeying, replace old pins with new pins matching your new key's cuts. Insert the new key into the plug to determine correct pin heights. Using tweezers, carefully place each new pin into its corresponding stack position inside the plug.
This step requires precision. Each pin must be the correct height and properly seated. If misaligned or wrong height, the key won't turn smoothly and the lock won't function.
Step 5: Reassemble and Test
Carefully reinsert the plug into the housing using the plug follower. Ensure the plug is fully seated and aligned. Remove the plug follower and test the new key in the lock, turning it smoothly through full rotation. If the key sticks, a pin may be misaligned; disassemble and check positions.
After confirming smooth operation, reinstall the lock on the door. Test the key from both sides and verify deadbolt function. Once verified, distribute new keys to the tenant and retain a master key copy for your records.
Cost to Rekey Locks for Rental Property
The cost to rekey locks varies based on the number of units, lock types, whether you hire a professional or do it yourself, and your geographic location.
Professional locksmith services typically charge a service call fee plus per-lock rekeying charges. For multiple units, most locksmiths offer volume discounts or flat rates. Property managers handling 10 or more units can negotiate per-unit rates.
If you rekey yourself, primary costs are rekeying kits and new key blanks. A basic kit costs relatively little, but you'll need a separate kit for each lock type. This approach makes sense for many units with the same lock type if you're comfortable with the technical work.
For Blackshirt Lock & Key customers managing rental properties, we offer flexible pricing for bulk rekeying jobs and coordinate turnovers across multiple units to minimize disruption. Our fully mobile service comes directly to your properties with straightforward pricing upfront and no hidden fees.
Smart Lock Benefits for Landlords
Smart locks transform how landlords manage access control. Unlike traditional locks requiring physical key distribution and collection, smart locks enable remote access management, temporary key codes, and detailed audit trails of who accessed the unit and when.
Smart locks eliminate the need to physically rekey between tenants. You can delete the previous tenant's access code remotely and issue a new code to the incoming tenant. This reduces turnover time and cost. If a tenant loses their key or a lock is damaged, you can issue a new access code instantly.
For property managers overseeing multiple units, smart locks provide centralized control through a mobile app or management platform. You can grant temporary access to contractors, cleaners, or prospective tenants without being physically present. The system logs every access event, showing which code was used and when, valuable for security disputes or incident investigation.
The trade-off is that smart locks require battery power, internet connectivity, and tenant familiarity with technology. Older tenants may find them inconvenient. Additionally, smart lock systems have ongoing subscription costs, whereas traditional rekeying is a one-time expense per turnover.
NFCC smart home security guidelines for rental properties
Security Liability and Key Control for Rental Units
Maintaining proper key control is critical for liability management. If an unauthorized person gains access because of inadequate key control and causes damage or harms the tenant, you could face legal liability and insurance claim denials. Courts have found landlords negligent for failing to change locks or maintain secure key management systems.
Key control encompasses rekeying between tenants, collecting all keys from departing tenants, limiting who has master keys, and maintaining distribution records. If a tenant reports a stolen or lost key, rekey that unit immediately. Documenting these incidents shows due diligence.
Your property insurance may require locks be changed within a certain timeframe after tenant move-out. Failure to meet these requirements could void coverage for certain claims. Review your insurance policy and discuss key control practices with your insurance agent.
A liability checklist for rental properties should include:
- Rekey all locks before a new tenant moves in
- Collect all keys from departing tenants and document their return
- Maintain a master key inventory and limit access
- Respond immediately to reports of lost or stolen keys by rekeying
- Document all lock changes, rekeying dates, and key distribution
- Update your insurance agent when implementing new security measures
- Conduct quarterly audits of key control practices
- Train maintenance staff and contractors on key handling protocols
Proper key control demonstrates to insurance companies and courts that you take tenant security seriously, reducing liability exposure and strengthening your defense if a claim arises.
Insurance Information Institute guidance on rental property liability coverage
Frequently Asked Questions
Is it cheaper to replace locks or rekey them?
Rekeying is almost always the more affordable option. When you rekey a lock, only the internal pins and springs are replaced, keeping the existing hardware intact. Replacement means buying entirely new locks and hardware. For rental property turnover, rekeying saves significantly on material and labor costs while providing the same security benefit, a completely new key that previous tenants cannot use. The decision changes only if your existing locks are damaged, incompatible with your master key system, or if you're upgrading to smart locks for remote access management.
Can I rekey my locks myself, or do I need a professional locksmith?
DIY rekeying is possible if you have the right tools and a rekeying kit, but it requires precision and understanding of lock mechanics. One mistake, misaligning pins or springs, renders the lock inoperable. Professional locksmiths complete the job quickly, guarantee the lock functions correctly, and can integrate rekeying into a broader key management policy for multiple units. For property managers handling multiple rental units, professional rekeying ensures consistency and reduces liability risk if a lock fails.
What should I know about landlord lock change laws when rekeying between tenants?
State and local property codes vary, but most jurisdictions require landlords to provide tenants with functioning locks and deadbolts for security compliance. Some states mandate that locks be changed or rekeyed between tenants; others require it only upon tenant request. Federal fair housing standards also apply, any lock changes must not discriminate or violate tenant rights. Check your state statutes and lease agreement language before rekeying. Many property managers include rekeying costs in turnover budgets and document the work for insurance claims and liability protection.
How do smart locks improve rental unit security and management?
Smart locks eliminate the need for physical key duplication and provide remote access control, critical for property managers with multiple rental units. You can grant temporary digital access codes to maintenance staff, remove access instantly when tenants move out, and track entry logs for security compliance. Smart locks reduce unauthorized access risks and simplify turnover procedures. However, they require reliable internet connectivity, regular battery maintenance, and tenant education. Many landlords use smart locks on common areas (mailrooms, laundry facilities) while keeping traditional rekeyed deadbolts on individual units for tenant privacy.