Rekey vs. Replace Locks: Which One Do You Need?

One of the most common questions we get from Huntsville homeowners is: "Should I rekey my locks or replace them entirely?"

The honest answer is — it depends. Both options improve your security, but they serve different purposes and come at different price points. Here's everything you need to know to make the right call.

Rekeying a lock means changing the internal pin configuration so that your old key no longer works. A locksmith removes the lock cylinder, replaces the pins inside with a new set, and cuts a new key to match.

The lock hardware stays exactly the same. Only the internal mechanism changes.

Rekeying is ideal when:

• You've just moved into a new home
• You've lost a key and aren't sure who has it
• A tenant or roommate has moved out
• You want all your locks to work with one key (called "keying alike")
• Your existing locks are in good condition

Cost: Rekeying is significantly cheaper than replacement — typically $20–$50 per lock for the labor, plus the cost of new keys.

Replacing a lock means removing the entire lock hardware — the knob, deadbolt, or handle set — and installing a brand new unit.

Replacing is ideal when:

• Your lock is old, worn, or damaged
• You want to upgrade to a higher-security lock
• You're installing a smart lock or keypad entry
• The lock has been tampered with or shows signs of forced entry
• You want a different style or finish to match new hardware

Cost: Lock replacement costs more because you're paying for new hardware plus installation labor. Expect $80–$200+ per lock depending on the brand and security level.

This is the #1 reason Huntsville homeowners call us. When you buy a house, you have no idea how many copies of the key exist — the previous owners, their family members, contractors, real estate agents, and neighbors may all have copies.

Rekeying immediately after moving in is the most cost-effective way to ensure you're the only one with a working key. You don't need to replace perfectly good locks — just change what they respond to.

If your keys are lost or stolen, rekeying is faster and cheaper than full replacement. Unless the lock itself is compromised, there's no reason to swap out hardware that's still in great shape.

Landlords and property managers in Huntsville should rekey between every tenant. It's a legal and ethical best practice — and it protects you from liability if a former tenant uses an old key to re-enter the property.

If your lock is stiff, sticky, or difficult to turn, rekeying won't fix the underlying mechanical problem. A worn lock needs to be replaced.

Similarly, if a lock has been drilled, pried, or otherwise damaged during a break-in attempt, replacement is the only option.

Not all locks are created equal. If your home has basic builder-grade locks (the kind that come standard in most new construction), upgrading to a Grade 1 deadbolt from Schlage or Medeco dramatically improves your security — and that requires replacement.

Want keypad entry, remote access, or integration with your home automation system? That requires new hardware. Smart locks from brands like Schlage Encode, Kwikset Halo, or Yale Assure can't be achieved through rekeying.

Technically, yes — rekey kits are sold at hardware stores. But there are a few reasons most Huntsville homeowners choose to call a professional:

1. It's easy to damage the cylinder if you're not experienced
2. Mismatched pins can cause the lock to stick or fail
3. A locksmith can rekey multiple locks to one key in a single visit, saving you time and hassle
4. Professional rekeying is fast — we can typically rekey an entire home in under an hour

If you've just bought a home in Huntsville or Madison County, here's what we recommend:

1. Rekey all exterior locks immediately — front door, back door, garage entry, and any other keyed entry points
2. Inspect each lock while we're there — if any are worn or low-quality, we'll let you know
3. Consider upgrading deadbolts on your main entry points to Grade 1 hardware
4. Key all locks alike so you only need one key for your whole home

This approach gives you maximum security at a reasonable cost.

At Rocket City Locksmith, we give you an upfront quote before any work begins. As a general guide:

• Rekeying: $25–$45 per lock (discounts for multiple locks)
• Lock replacement (standard): $85–$150 per lock including hardware
• Lock replacement (high-security): $150–$300+ per lock including hardware
• Smart lock installation: $100–$200 per lock including hardware

We'll always recommend the most cost-effective solution for your specific situation — not the most expensive one.

• Rekey when your locks are in good condition and you just need to control who has a working key
• Replace when locks are damaged, worn, or you want to upgrade your security level
• Both options are significantly cheaper than dealing with a break-in
• Call a professional for fast, reliable results with a warranty on the work

Ready to secure your Huntsville home? Call Rocket City Locksmith at (256) 384-8624 for a free estimate. We serve all of Huntsville, Madison, and Madison County — same-day service available.