Rekeying vs. Lock Replacement: What London Locksmiths Recommend

Rekeying vs. Lock Replacement: What London Locksmiths Recommend. When it comes to securing your home or business in London, few decisions are as crucial and as commonly misunderstood as choosing between rekeying your locks or replacing them entirely.

Both options serve the essential purpose of changing who has access to a property, but they differ in terms of cost, functionality, and long-term benefits.

At Locksmith Co, we help property owners, landlords, and tenants across London from Tottenham to Westminster make informed choices about their security. This article will help you understand the key differences between rekeying and lock replacement, when each is recommended, and how to determine the right option for your needs.

Rekeying vs. Lock Replacement

What Is Rekeying?

Rekeying involves modifying the internal components (called pins or tumblers) of an existing lock so that it works with a new key. The process is relatively quick and does not require removing the entire lock from the door.

How It Works

1. The locksmith removes the lock from the door.
2. The internal pins are adjusted to match a new key.
3. The lock is reassembled and reinstalled.
4. All previous keys will no longer operate the lock.

Result:

• You keep your original lock hardware but only the new keys can open it.

What Is Lock Replacement?

Lock replacement involves completely removing the existing lock and installing a new one typically with different hardware and a fresh set of keys.

What It Includes

1. Removal of the old lock (including mechanisms and faceplate).
2. Selection and installation of a new lock (can be the same type or an upgraded model).
3. Issuance of new keys for the new lock.

Result:

• You get an entirely new lock system, which may be more secure or better suited to your current needs.

When Should You Rekey Your Locks?

Rekeying is often the more affordable and efficient option, especially when the existing locks are still in good condition. London locksmiths typically recommend rekeying in the following scenarios:

1. You’ve Moved Into a New Property

• If you’ve just bought or rented a home or office in London, rekeying ensures that previous tenants, owners, contractors, or cleaners no longer have access.

2. You’ve Lost Your Keys

• If you’ve misplaced your keys and are worried someone may have picked them up, rekeying offers a fast solution without the need for full hardware replacement.

3. You Want to Consolidate Keys

• If you have different keys for multiple doors, a locksmith can rekey all your locks to operate with a single master key as long as the locks are compatible.

4. You’re Managing Tenant Turnover

• For landlords, rekeying is a cost-effective way to change access between tenants without replacing entire locksets after every move-out.

5. The Lock Is Still Functional

• If the lock mechanism is still in good shape and provides adequate security, there’s no need to replace the entire system.

When Is Lock Replacement the Better Option?

There are situations where a simple rekeying just doesn’t cut it. Full lock replacement is generally recommended when:

1. The Lock Is Worn or Damaged

• If your lock is rusty, sticky, or otherwise compromised, rekeying won’t solve the underlying mechanical issues. Replacing it ensures functionality and durability.

2. You Want to Upgrade Security

• Replacing your current locks with high-security models, such as BS3621 mortice locks or anti-snap euro cylinders, provides better resistance against picking, bumping, or drilling.

3. Your Locks Are Not Insurance Compliant

• Many London insurers require locks that meet British Standards (e.g., BS3621). If your current locks don’t comply, a full replacement may be necessary to maintain your policy coverage.

4. You’re Changing to Smart or Keyless Entry

• Upgrading to a smart lock or digital access system will require replacing your old mechanical locks with electronic or battery-powered alternatives.

5. Your Locks Are Incompatible with Rekeying

• Not all lock models are rekeyable especially budget models or older ones. In such cases, replacement is the only viable option.

Cost Comparison: Rekeying vs. Lock Replacement in London

Rekeying Costs

• Average cost per lock: £30–£50
• Additional key copies: £5–£10 each
• No need to buy new hardware

Lock Replacement Costs

• Basic locks: £50–£100
• High-security locks: £120–£250
• Smart locks or advanced systems: £200+

Labour cost may be higher depending on installation complexity

Rekeying is more affordable upfront, but lock replacement may offer longer-term value depending on your security goals.

Security Implications

Rekeying Pros:

• Keeps working hardware in place
• Removes access from old keys
• Can be done quickly, often same-day
• Ideal for multi-unit properties or landlords

Rekeying Cons:

• Doesn’t improve physical strength of the lock
• Still susceptible to techniques like lock snapping (if the lock type is vulnerable)

Lock Replacement Pros:

• Opportunity to upgrade to modern, more secure hardware
• Meets or exceeds insurance standards
• Customizable to new design preferences

Lock Replacement Cons:

• Higher cost
• May require more time to source and install new locks

What London Locksmiths Recommend

At Locksmith Co, our general advice to clients is:

• Rekey when your locks are in good condition, you’ve had a change in occupancy, or lost keys.
• Replace your locks when they are outdated, damaged, or you want to upgrade your overall security.

We always start with a security assessment, examining:

• The current lock type
• Condition of the lock and door
• Your location and risk profile (e.g., ground-floor flat in Central London vs. second-floor home in Tottenham)
• Budget and insurance requirements

Based on this, we give you a clear, professional recommendation and pricing estimate.

Frequently Asked Questions

Can any lock be rekeyed?

• Most high-quality locks can be rekeyed, but very old, low-budget, or poorly installed locks might not be compatible. We can assess your locks on-site to determine rekeying feasibility.

How long does rekeying take?

• Typically, rekeying a lock takes about 20–30 minutes per unit. For multiple locks, the process may take longer but can often be completed in a single visit.

Will rekeying affect the door or frame?

• No. Rekeying involves internal changes to the lock cylinder only, leaving your door and frame untouched.

Is it possible to rekey smart locks?

• Some smart locks do allow for rekeying, particularly hybrid models that include a mechanical key override. For full digital models, reprogramming or replacement may be needed instead.

Why Choose Locksmith Co in London?

• Local Expertise: We serve clients throughout Central and Greater London, including Tottenham, Camden, Westminster, and beyond.

Certified and Insured:

• ll locksmiths are DBS-checked, City & Guilds qualified, and fully insured.
• Transparent Pricing: We offer fair, upfront quotes with no hidden charges.
• Emergency Services: 24/7 availability for urgent lock changes or security needs.
• Premium Hardware: We only install locks from trusted manufacturers such as Yale, Era, Ultion, and ABS.

Contact Locksmith Co Today

If you’re unsure whether you should rekey or replace your locks, we’re happy to help. Our experienced locksmiths are on hand to offer honest advice, free quotes, and rapid service across London.

Email: contact@locksmithco.co.uk
Website: https://locksmithco.co.uk
Serving all London boroughs, 24 hours a day

Your security is only as strong as the locks on your doors. Whether you’re a new homeowner, a landlord with frequent tenant turnover, or someone simply looking to upgrade your security, understanding the difference between rekeying vs. lock replacement is critical.

At Locksmith Co, we ensure that every lock new or rekeyed is installed with care, expertise, and the highest standards of security in mind. Get in touch today and take the first step toward a safer, smarter property.