Top 5 signs your lock needs to be replaced
July 30, 2025
If you have ever wondered, do locks last forever, we can safely say - they do not.
These are the top 5 signs that you should be looking into changing your locks for new ones.
Whether it's your home, office, post box or storage door lock, a secure and properly functioning door is the first line of defense against burglars and intruders.
Most people, whether they’ve recently purchased their first home or have lived there for decades, don’t think about changing their locks. In today’s world updated and well-functioning door locks are a must!
If your locks are damaged, getting hard to use or you’ve just moved into a new property, you should think about getting your locks changed. In this blog post we will take you through the top 5 signs you’ll need to change your locks!
1 - Wear and tear
Even if older locks seem to be in good working order, it may be safer to replace the locks with a more modern locking system. Over the years security systems and regulations have changed. Most locks of the same standard today, compared to 20 years ago, are a lot better in many ways.
Burglars use a range of sophisticated techniques and equipment to remove or deactivate lock systems, so modern upgrades such as anti snap locks offer far greater protection for your home. Despite what we think about our kitchen appliances, locks are the pieces of mechanical hardware that see the most daily use.
Because we’re constantly locking and unlocking our doors, the locks themselves are subjected to more wear, making them more likely to break down over time. This is especially true if your locks came with your home or apartment, there's no way to tell how old your locks are and definitely no way to confirm if the previous owners used them correctly or if they enjoyed slamming their doors.
If your locks are particularly old, it might be time to replace them. A standard lock with proper care and maintenance could see you through several years but as wear and tear take their hold the risk of failure grows.
2 - Damage/ incorrect use
We have come across so many occasions where the lock has been damaged due to incorrect use. This can happen due to incorrect installation, age and misalignment. It can be the result of excessive jiggling of the key to make it work or even force a door and lock that shouldn't be forced. If your lock is damaged in any way, you may experience issues turning the key or, in the worst case, the door may fail to lock or unlock resulting in an emergency locksmith needing to come out and gain access. If this happens with your door even once, it’s best to be proactive and look into replacement options before you risk a complete lock-out.
3 - New property
Before you celebrate moving into your new, welcoming home, we recommend that you change the entry door locks.
You cannot confirm that the previous tenant has a copy of the key. Even if your house is new, replacing the door lock set with new ones will ensure your peace of mind, or you may consider installing a customize lock or smart lock (such as a smart fingerprint lock, smart card lock) as an additional line of defense. Moving is an exciting (if not slightly stressful) experience where thoughts on décor and getting the Wi-Fi set up are usually top of the list. However, it’s also important to take a moment to think about changing the locks.
Even if the locks are in working order, you never know who might have a key and what their intentions could be. It’s possible that the previous owners still have a spare key somewhere, have given duplicates to children, friends, or neighbours or might even have lost a few.
We always advise that one of the first things you do in a new home is to change the locks. Calling out a local Locksmith to meet you on your move in day is a great way to protect your home, valuables, and family.
4 - Recent local break - in
If you or someone in your neighborhood or apartment complex has been the victim of a recent break-in, it’s almost imperative that you get your locks replaced. If the burglar entered using brute force, it’s likely that the door or locking mechanism is now damaged, making it all the more likely that it won’t shut or lock properly. However, if the burglar entered by picking the lock or using a poorly-hidden spare key, two things are almost certain: your locks are not secure enough, and criminals are likely to target you again. Replacing the lock is the remedy for both issues.After the break-in incident, none of us can be sure if the keys have fallen into the wrong hands. We should not be lucky, it is vital to replace all locks as soon as possible. Otherwise, it leaves your home vulnerable to another burglary. Not only could your locks have been damaged in the attack but it can also mean that your locks weren’t up to scratch security wise. There is unfortunately no sure-fire way to stop a burglary but different locks can come with different security features, making your home more secure and protected against attack. Likewise, it’s not uncommon for burglars to return to a home they have already targeted with the assumption they will be able to get in again, so it’s even more important that you change your locks to protect your home!
5 - Malfunction & manufacturer error
Buildings can shift, basements are built and the earth moves. All these can put additional unseen stress on your door, the hinges and the lock.
Locks are meant to take extreme pressure in a short amount of time. This is usually the best way to protect against a burglary lock attack. However, constant pressure due to misalignment causes breakages and cracks in the internal parts of the lock. This can expose manufacturer weaknesses and cause your lock to malfunction leaving you locked out or in. If your locks haven't been installed by a professional, this will most likely result in issues down the line. A misalignment now, that only causes slight tension on the bolt, can turn into a much ore serious issue when winter comes and the door swells.
This is perhaps the most obvious — and urgent — sign your lock needs to be replaced. If your lock is damaged in any way, you may experience issues turning the key or, in the worst case, the door may fail to lock or open entirely. If this happens with your door even once, it’s best to be proactive and look into replacement options before you risk a complete lock-out.
If you are looking for a lock change locksmith, you have come to the right place When someone searches for lock change locksmith, they’re seeking more than just a service—they want a trusted partner to keep their property safe. At SMS Locksmiths, we understand that replacing or upgrading locks is about security, peace of mind, and protection for your home or business. With years of experience serving London and the surrounding areas, our team of fully trained, DBS-checked locksmiths delivers reliable, professional lock change services every time. In this comprehensive guide, we cover everything you should know about changing locks—from why it matters and when to do it, to choosing the right locks and understanding the advantages of using professionals. By the end, you’ll know why SMS Locksmiths should be your first call for all lock and security upgrade needs. 1. Why Change Your Locks? Changing locks is about more than just replacing hardware. It’s a critical step in ensuring your property remains secure, especially when key control is uncertain. Here’s why professional lock changes are important: Unknown key holders: If previous occupants, tenants, or staff may still have keys, changing locks ensures only authorised persons have access. Wear and tear: Over time, locks can become loose or malfunctioning, making them less secure. Enhanced security measures: Upgrading to high-security or anti-snap locks can significantly reduce the risk of break-ins. Insurance compliance: Policies often require insurance-approved locks. A professional locksmith can recommend and install compliant hardware. 2. When You Need a Lock Change Here are common scenarios that warrant immediate lock replacement: Moving into a new property Keys lost, stolen, or unaccounted for After tenant departure or staff changes Following a burglary or break-in For security upgrades, including anti-snap or smart locks When locks show signs of wear or are difficult to operate 3. Lock Change vs. Lock Repair Knowing whether to repair or replace your lock is essential: Repair: Ideal if mechanisms are clogged or key entry is limited. Works best for wear-and-tear issues, and can be done quickly. Replace (Lock Change): Necessary if the lock is broken, non-operational, or security needs to be improved. Recommended for move-ins or post-burglary situations. At SMS Locksmiths, we assess and recommend the best option for both security and cost efficiency. 4. Types of Locks and Upgrades We specialise in a range of lock types suitable for different door types, usage scenarios, and levels of security: Lock Type Features & Benefit Whether your priority is keyless convenience, insurance compliance, or maximum protection, we have the right solution. Anti-Snap Cylinder Locks British Standard (BS3621) Deadlocks Multipoint Locking Systems High-Security Cylinder Locks Emergency Locks & Night Latches Smart/Keyless Entry Systems Security Hardware for Doors/Frames Window & Patio Door Locks Prevents forced entry commonly seen in burglaries. Insurance-approved, durable locks for wooden doors. Adds multiple locking points for uPVC or composite doors. Designed to resist drilling, picking, and bumping. Provides quick access control and additional security. Convenient, code-based access without traditional keys. Reinforced plates, hinges, and strike plates to prevent kick-ins. Secures all exterior openings—essential for full-property protection. 5. Our Lock Change Process Here’s how SMS Locksmiths ensures a smooth, fast, and secure lock change: 1. Initial Contact You provide details such as postcode, lock type, and availability. 2. Local Locksmith Assignment A professional locksmith from our London team is dispatched—no call-out fee. 3. Security Assessment on Arrival We check the door, frame, and current lock to determine the best solution. 4. Clear Quotation You receive a written, all-inclusive quote by text or email—no hidden fees. 5. Lock Change or Upgrade We install the replacement lock or upgrade components (cylinders, multipoint mechanisms) efficiently—most jobs are completed in under an hour. 6. Testing & Warranty Final checks ensure the lock operates smoothly. All work is covered by our workmanship warantee. 7. Documentation Provided You receive an invoice and insurance-compliant paperwork for your records. 8. Security Assessment and Upgrade Advice Our expert locksmiths don’t just change locks—they provide strategic advice to strengthen your security: Door frame reinforcement with metal strike plates Window and patio door upgrades with Yale or mortice locks Frame lining solutions to prevent drilling Home security risk assessments to identify weak points 9. Frequently Asked Questions Q. How much does a lock change cost? A. Usually between £100–£180 depending on the lock type. Includes all materials, labour, and zero call-out fee. Q. How long does it take? A. A typical lock change is completed within 60 minutes. Q. Are you insured? A. Yes—fully insured with DBS-backed locksmiths. Q. Do you work evenings and weekends? A. Yes—24/7 emergency availability is available. Call to schedule visits. 10. Need a Lock Change? Here’s How to Book Call us now for immediate assistance or to schedule a visit Message us via GMB or book through our website Email for a quote if you’d prefer to avoid phone calls Final Thoughts lock change locksmith isn’t just a search phrase—it’s a critical service for secure living and working environments. At SMS Locksmiths, we deliver top-tier products, expert service, and total transparency. Don’t leave your security to chance. Contact SMS Locksmiths today for fast, reliable, and guaranteed lock change services across London.
Getting locked out is never fun — but if you're in Clapham, help is just a call away. Whether it’s late at night or first thing in the morning, SMS Locksmith offers fast, reliable locksmith services throughout Clapham with no call-out charges and 30-minute average response times. Step 1: Don’t Panic We know it’s stressful, especially if it’s cold or you have somewhere to be. Try to stay calm and check for any open windows or alternative entry points (safely, of course). Step 2: Avoid DIY Entry Trying to force the lock or use makeshift tools can damage your door – and cost you more in the long run. Always leave it to a professional. Step 3: Call a Local Clapham Locksmith We’re based nearby and can usually be with you in under 30 minutes. Our experienced technicians use non-destructive methods wherever possible to get you back inside quickly and safely. Step 4: Consider a Security Upgrade If your lockout was due to a lost or stolen key, now might be the perfect time to consider upgrading your locks. We offer a full range of British Standard and high-security locks. Need help right now? Visit our Clapham Locksmith page or call us directly for immediate assistance.
