Here are some key (pun intended) situations when you should consider changing the locks on your home:
1. When you move into a new house or apartment
Who really knows how many copies of your keys exist? Previous owners might have given spares to neighbors, family members, or service providers. Don’t risk your safety and valuable belongings on the hope that all keys were returned.
What to do: Replace locks within the first week of moving in. Consider upgrading to smart locks that let you monitor who enters your home and when. Add reinforced strike plates with 3-inch screws that anchor into the door frame’s studs, not just the trim.
2. After losing your keys
Lost keys can end up in anyone’s hands. Even if you think they’re just misplaced somewhere in your home, can you really be sure?
What to do: Don’t wait to see if they turn up. Replace your locks immediately, especially if your keys had identifying information attached like your address.
3. Following a break-in or attempted break-in
Burglars might have damaged your locks or learned weaknesses in your security system. Plus, the emotional peace of mind from fresh locks can’t be overstated.
What to do: Upgrade to high-security locks with pick-resistant features. Consider adding a deadbolt if you don’t already have one. Install door jamb reinforcement plates that prevent the frame from splintering when force is applied – a common weak point that criminals exploit.
4. After a roommate or tenant moves out
Even trusted former housemates might have made copies you don’t know about. And what if they shared keys with friends or partners?
What to do: Change locks promptly after move-outs, no matter how amicable the separation was. Use this opportunity to inspect door hinges for wear and replace them with security hinges that have non-removable pins.
5. During a separation or divorce
Emotional times call for extra security precautions. Protecting your personal space becomes even more important during relationship changes.
What to do: Change locks as part of your separation process, and consider additional security measures if tensions are high. Reinforce doors with stronger hinges and jamb shields to prevent forced entry.
6. If your keys were stolen
Stolen keys put you at direct risk, especially if the thief has information about where you live.
What to do: Replace locks immediately and file a police report about the theft. Consider a complete door security overhaul, including reinforced strike plates and door edge protectors.

Maximum Security Latch Strike
(Click image for more detail)
7. When locks become worn or outdated
Have you ever wondered what happens when lock mechanisms wear down over time? They become more vulnerable to bumping, picking, and other bypass methods that thieves use.
What to do: Inspect your locks yearly for signs of wear and replace them before they fail completely. Check door hinges for sagging – a sign they need replacement with heavier-duty versions.
8. If you’ve given keys to contractors who no longer need access
Do you know exactly how many copies contractors might have made during your renovation project? That temporary access could become permanent if you don’t act.
What to do: Either change locks or rekey them after major home projects are complete. Have contractors install security hinges and door jamb reinforcements during renovations for added protection.
9. If you notice signs of tampering with your current locks
Scratches around keyholes, loose components, or difficulty turning the key could indicate someone tried to break in without your knowledge.
What to do: Have locks inspected by a professional locksmith and replace if there’s any evidence of tampering. Check the entire door frame for damage and consider installing door jamb armor – metal reinforcements that make it nearly impossible to kick in a door.
10. As part of a general security upgrade
Modern locks offer features your outdated ones simply can’t match. Why stick with old technology when your family’s safety is at stake?
What to do: Consider upgrading to smart locks, keyless entry systems, or high-security lock cylinders. Pair these with heavy-duty hinges and reinforced strike plates for complete door security.
11. After lending keys for an extended period
Ever wonder what happened during the weeks your house-sitter had your keys? Even trusted friends might have made copies for convenience.
What to do: Change locks after anyone has had extended access to your keys, especially if they’ve been out of your possession overnight or longer.
12. When neighborhood security concerns arise
Has there been a spike in break-ins nearby? Your outdated locks might not stand up to modern burglary techniques.
What to do: Stay informed about local crime patterns and upgrade locks proactively if your neighborhood experiences security issues. Install complete door security systems, including reinforced jambs and security hinges that prevent doors from being lifted off their frames.
Even if none of these situations apply, it’s generally a good security practice to change your locks every few years. Modern lock systems with enhanced security features can provide better protection than older models.
Beyond Just Locks: The Complete Door Security System
Many homeowners focus solely on locks, but did you know that most forced entries occur by attacking the door frame, not the lock itself? A complete security upgrade should include:
- Reinforced strike plates: Standard strike plates often come with short screws that only penetrate the door frame trim. Upgrade to models with 3-inch screws that anchor into the wall studs.
- Door jamb reinforcement: These metal shields prevent the door frame from splintering when force is applied. They distribute the impact across a larger area, making kick-in attempts much more difficult.
- Security hinges: Standard hinges can be compromised by removing the pins. Security hinges have non-removable pins and interlocking leaves that prevent the door from being removed even if the pins are somehow extracted.
- Door edge protectors: These metal plates reinforce the edge of the door where the deadbolt extends, preventing splitting.
Smart Locks: Security for the Digital Age

EXAMPLE: Smart Lock U-Bolt Pro, 7-in-1 Fingerprint Keyless Entry Door Lock with App Control
(Click image for more info)
Are traditional locks becoming a thing of the past? Smart locks offer compelling advantages that make them worth considering:
Remote Access Control
Ever rushed home wondering if you locked the door? With smart locks, you can check your door’s status and lock or unlock it from anywhere with your smartphone. This feature is invaluable for letting in service providers or family members when you’re away.
Activity Monitoring
Who’s been entering your home and when? Smart locks maintain detailed logs of all entries, allowing you to monitor access. Some systems even send real-time notifications when your door is unlocked.
Multiple Access Methods
Forgot your keys? No problem. Access your home via PIN code, fingerprint, smartphone app, or even voice command through smart home integration. Some models still include traditional key backup for peace of mind.
Temporary Access Codes
Need to let the dog walker in while you’re on vacation? Generate a temporary code that works only during specific times or dates. Once expired, the code becomes useless – no more worrying about collecting keys afterward.
Smart Home Integration
Modern smart locks integrate with other security devices like cameras and alarm systems. Imagine your outdoor lights automatically turning on when someone unlocks your door after dark, or your home security system disarming when you enter.
Considerations Before Upgrading
Before jumping into smart locks, consider:
- Battery life and backup entry methods
- Compatibility with your existing door and home automation systems
- Encryption and security protocols to prevent hacking
- Weather resistance for exterior doors
Remember: The cost of changing locks and upgrading door security is small compared to the potential loss from a break-in – not to mention the emotional toll of feeling unsafe in your own home. Don’t wait for something bad to happen before taking these simple security steps!
As your local real estate agent in Irvine, Newport Beach, and of Orange County, I specialize in using digital and modern marketing strategies to showcase homes as a listing agent to my sellers. I put in the work to create engaging content, promote listings with strategic social media campaigns, and ensure properties get the exposure they deserve.

Hiring me means choosing dedicated representation that can give your home a powerful online presence, attracting serious buyers and work toward securing the best possible offers!
Let’s talk about what we can do together.
For you.
For your family.
References:
City of Vernon, CA, Home Security Tips
https://www.cityofvernon.org/government/police-department/staying-safe/home-security-tips
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