Rekeying Vs Replacing Locks: Which Is Right For Homes And Businesses?

Rekeying keeps your existing lock hardware in place and changes the internal pin layout so old keys no longer work. Your locksmith cuts fresh keys to match the new pin pattern, then tests and lubricates the lock. You get a new key set without changing the visible hardware on the door. For most pin tumbler locks and many commercial cylinders, this is quick, neat and cost effective.

Good to know: rekeying can also create a keyed-alike setup so one key opens several doors, or a simple master key system for landlords and small sites.

Replacement swaps the entire lock or cylinder body for new hardware. You might keep the same style in a newer model, or upgrade to a higher security platform with restricted keys. Replacement is the better move when the lock is worn, damaged or below the standard you now need. It also lets you add features like a stronger strike plate, anti-drill pins or a smart keypad where appropriate.

Bottom line: if the lock body is tired or the door hardware no longer suits the risk level, replacement is the cleaner long term fix.

• Rekeying: Usually the lower cost option because you are not paying for new hardware. Most doors can be rekeyed in one visit with minimal disruption to trade or family life.
• Replacing: Costs more due to parts and extra fitting time. You gain hardware warranties and the chance to upgrade security, but allow more time for sourcing and installation.

For busy households and retail spaces, a same day lock rekeying on the Gold Coast visit often restores control fast. Larger upgrades are best scheduled outside trading hours or between tenancy handovers.

If a lock is in good condition, rekeying can deliver the same day-to-day security as replacement because old keys are rendered useless. The weakness is not the rekey itself, but the baseline quality of the lock you are keeping. A light-duty cylinder that was easy to pick yesterday is still easy to pick after a rekey.

Choose replacement when you need:

• Higher resistance to forced entry at an exposed front door
• Restricted key control so keys cannot be copied without approval
• Hardware rated to a standard requested by your insurer or builder

For many internal doors or back-of-house storerooms, rekeying is perfectly adequate.

• Moving house or taking a new lease: You do not know how many keys are in circulation. Rekey the main entries on day one, then plan any upgrades later.
• Lost or unreturned keys: Staff changeover, contractors not returning keys, or a key gone missing at the beach. A fast rekey restores control with minimal cost.
• Keyed-alike convenience: Too many keys on the ring? Rekey cylinders so one key fits front, laundry and garage.
• Short-term tenancy turnover: Quick security reset between tenants without changing the look of doors.

If you manage apartments, a scheduled rekey program after each tenancy is simple and keeps risk low without ripping out sound hardware.

• Worn or unreliable locks: If the latch sticks or the key turns roughly, the mechanism is failing. Replacement avoids repeat call outs.
• Security uplift: Move to a restricted key system, heavier duty deadlatch, reinforced strike or an electronic keypad where access logs matter.
• Compliance or insurance requests: Some policies or fit-outs specify particular hardware types, fire ratings or escape functions.
• Door or frame changes: New doors, new use of a space or an upgraded roller shutter usually call for fresh hardware matched to the job.

If you run a site with regular staff turnover, a master key system on a restricted profile limits uncontrolled copying and usually pays for itself in saved headaches.

Standard keys can be copied at many key cutters. That convenience is also a risk. Restricted systems use patented key profiles and controlled duplication. Copies are only cut by authorised locksmiths with written approval. You can pair restricted keys with either rekeying or replacement, depending on your current hardware. For businesses with stock rooms or records storage, this step is often the single biggest security improvement.

A strong lock needs a strong foundation. If the strike plate is loose or screws are short, even a high-grade cylinder underperforms. During a lock replacement visit, a locksmith can fit longer screws into the frame, align the latch and upgrade the strike to spread force. On commercial aluminium doors, correct cylinder length and cam type matter so hardware sits flush and resists twisting. Ask for a quick hardware health check while you decide between rekey and replace.

Smart locks add keypad or Bluetooth entry, handy for Airbnbs, offices or homes with school-age kids. If you already use a quality mechanical deadlatch, you can often replace the cylinder with a smart platform. If the existing lock is basic, a full replacement with a smart-rated deadlatch is better. Keep batteries fresh and retain a keyed override for emergencies, especially in coastal weather.

Rekeying keeps serviceable metal out of landfill, which is a quiet win. When you do replace, ask your locksmith to recycle old brass cylinders and steel components. Some suppliers offer take-back programs for packaging and old hardware.

1. Assess condition: Is the current lock smooth, secure and well-fitted? If yes, rekeying is on the table.
2. Set the risk level: Front door on a busy street or a staff entrance at the rear? Higher risk favours replacement or restricted keys.
3. Decide on key control: If copying is a concern, move to restricted keys whether you rekey or replace.
4. Plan convenience: Keyed-alike or master key now saves time later.
5. Budget and timing: Need an immediate reset after a move or lost key? Rekey first, upgrade later if needed.
6. Check insurance: Confirm any hardware requirements before you buy.

• Leaving one old key active: If you rekey some doors and forget the side gate or garage, you have not closed the loop.
• Ignoring the door and strike: The best cylinder will not save a loose frame.
• Skipping key control: Cheap keys copied without approval undo good planning.
• DIY cylinder swaps: Small alignment errors lead to lockouts. Professional fitting saves callbacks and frustration.

At Border Locksmiths, we help homeowners, landlords and business owners choose the right mix of lock rekeying and lock replacement. Whether you have moved house, changed staff or lost keys, we can secure entries fast and advise on upgrades that match your risk and budget. Visit borderlocksmiths.com.au to book a service or request a site review.