If you’re trying to decide between rekeying your existing locks or upgrading to a smart lock, the honest answer is that neither one wins outright. Rekeying gives you a fresh, reliable lock at a low cost, while smart locks trade some of that simplicity for convenience and remote control. Which one is “better” really comes down to what you’re trying to protect against and how you want to manage access to your home.
Let’s break down what each option actually does, where they hold up, and where they fall short.
What Rekeying Actually Does
Rekeying means a locksmith changes the internal pin configuration of your existing lock so that old keys no longer work, and new ones are cut to match. The lock itself stays in place. Only the mechanism inside changes.
This is the go-to move after moving into a new home, ending a lease with a tenant, losing a set of keys, or going through a breakup where someone still has access. It’s fast, usually done in under 20 minutes per lock, and doesn’t require replacing any hardware.
Rekeying doesn’t add any new features. It simply resets who can get in with a key.
What Smart Locks Actually Do
Smart locks replace the traditional key-and-tumbler system with an electronic one. Depending on the model, you can unlock your door with a PIN code, a smartphone app, a fingerprint, or a key fob. Many models also let you:
- Generate temporary codes for guests or service providers
- See a log of who came and went, and when
- Lock or unlock the door remotely
- Get an alert if the door is left open
Some smart locks still accept a physical key as a backup, and others go fully keyless.
Rekeying vs Smart Locks: How They Compare on Security
Here’s where the two actually differ in practice:
Factor | Rekeying | Smart Locks |
Physical break-in resistance | Depends on lock grade, unaffected by rekeying itself | Depends on lock grade, same as traditional locks |
Key duplication risk | Eliminated for old keys instantly | Not applicable, no physical key to copy in most cases |
Digital vulnerability | None | Possible, hacking, app exploits, signal jamming |
Power dependency | None | Requires battery or hardwiring |
Access tracking | None | Detailed logs available |
Remote lock/unlock | Not possible | Available on most models |
A rekeyed deadbolt with a solid strike plate is still one of the most dependable ways to keep a door secure. It has no battery to die, no app to malfunction, and no wireless signal to intercept. Its main weakness is that anyone holding a valid key can get in, and there’s no record of who used it.
Smart locks solve that visibility problem. You know exactly who accessed the door and when, and you can cut off access instantly without calling a locksmith. But that convenience comes with new risks: a dead battery can lock you out, a weak Wi-Fi connection can delay remote commands, and poorly secured smart locks have been shown to be vulnerable to hacking in independent security tests.
Cost Differences
Rekeying is the cheaper route in almost every case. A single lock typically runs $50 to $150 depending on your location and the locksmith. Rekeying a whole house usually falls between $150 and $400.
Smart locks cost more upfront. Basic models start around $150, while feature-rich options with cameras, biometric sensors, or full smart home integration can run $300 or more per lock, not including installation if you’re not doing it yourself.
Convenience and Everyday Use
This is where smart locks pull ahead for a lot of households. If you frequently have guests, dog walkers, cleaners, or contractors coming and going, a smart lock lets you assign temporary access without handing out physical keys or worrying about getting them back.
Rekeying doesn’t offer that flexibility. Every person who needs access still needs a physical key, and if you want to revoke someone’s access later, you’re rekeying again.
On the other hand, if you value a system that just works without an app, a network connection, or a charging schedule, a rekeyed traditional lock is about as low-maintenance as it gets.
Which One Should You Choose
A few questions can help point you in the right direction:
Do you need to track or manage access for multiple people? Choose a smart lock.
Are you on a tight budget or renting a property where you can’t modify the hardware? Choose rekeying.
Do you want a system with zero digital vulnerabilities? Choose rekeying.
Do you want remote control and don’t mind occasional battery maintenance? Choose a smart lock.
Many homeowners land on a middle ground: rekey the primary entry points for a dependable baseline, then add a smart lock to a secondary door, like a side entrance or garage access, where the convenience features matter most.
Final Thoughts
Rekeying and smart locks solve different problems. Rekeying is the more affordable, low-maintenance way to make sure old keys stop working. Smart locks add tracking, remote access, and guest management, at the cost of relying on batteries and software.
If you’re still weighing the options for your specific home, a licensed locksmith can walk through your doors, your budget, and how you use your space, then recommend the setup that actually fits.
Frequently Asked Questions
Yes, in most cases. Rekeying resets which keys work with the existing lock, so it provides the same security as a new lock as long as the hardware itself is in good condition and rated for your door type.
It’s possible, though most reported cases involve outdated firmware or weak default passwords. Choosing a reputable brand and keeping the firmware updated significantly reduces this risk.
Battery-powered smart locks keep working during a power outage since they don’t rely on home electricity. Most also include a physical key override or a backup power port for emergencies.
Not always. Many smart locks are designed for DIY installation and fit standard door prep. A locksmith can help if your door has non-standard measurements or if you want it integrated with an existing security system.
Or Ben Haim is a seasoned writer specializing in locksmithing and security solutions. With a passion for providing practical insights, Or creates engaging content that empowers readers to make informed decisions about their safety. His expertise ensures accurate, up-to-date information for homeowners, businesses, and vehicle owners alike.
