Renting out a property comes with a long list of responsibilities, and ensuring the security of the property is one of the most important. While it may seem like a minor detail, changing the locks between tenants should always be standard practice for landlords. It’s not just about peace of mind—it’s about protecting the property, safeguarding future tenants and reducing potential liability.

When a tenancy ends, you simply cannot be sure who might still have access to the property. Former tenants may have made copies of the keys, given spare sets to friends or family, or even lost keys that ended up in the wrong hands. By changing the locks, landlords can guarantee that only authorised people have access when the new tenancy begins.

Protecting Your Investment

A rental property is a significant investment, and its security should be treated with the same importance as its maintenance and upkeep. If a previous tenant—or anyone they gave a key to—retains access, it exposes the property to potential theft, vandalism or squatting. Insurance providers may also take a dim view if a claim is made and it’s discovered that locks were not changed between tenancies.

Changing the locks is a relatively small expense compared to the potential risks involved. It’s a proactive step that protects the landlord’s investment while demonstrating to new tenants that their safety is a priority.

Creating a Sense of Safety for New Tenants

New tenants moving into a property naturally expect a secure and private home. Knowing that they are the only ones with keys helps them settle in and feel comfortable. Tenants who feel secure are more likely to treat the property respectfully and stay for longer periods, reducing turnover and void periods for landlords.

Providing new tenants with freshly cut keys and clear assurances about their security can also foster a better landlord-tenant relationship. It sets the tone for a tenancy built on trust, professionalism and mutual respect.

Legal and Insurance Considerations

While there is currently no legal requirement in the UK for landlords to change locks between tenants, failing to do so could have legal and insurance implications. If a burglary occurs and it is proven that someone entered using an old key, insurers might refuse to cover the loss due to negligence on the landlord’s part.

In cases where tenants raise concerns about security and a landlord fails to address them, disputes can arise that could escalate to legal action. Changing the locks is a simple way to minimise liability and avoid unnecessary complications.

When You Should Definitely Change Locks

There are some situations where changing the locks between tenants becomes even more critical. If the previous tenant left under difficult circumstances, was evicted, or there were reports of domestic disputes, it’s essential to ensure no old keys are in circulation. Similarly, if there’s evidence that spare keys were widely distributed or lost during the previous tenancy, lock changes become even more urgent.

In shared properties or houses of multiple occupancy (HMOs), where multiple people may have had access to the property over time, landlords should be particularly vigilant about changing locks when tenancies change.

The Importance of Using a Reliable Locksmith

When changing locks, it’s vital to use a reliable locksmith who understands landlord requirements. A trustworthy locksmith can provide advice on the best locks to use, ensuring they meet insurance standards such as BS3621 certification for external doors.

A professional locksmith will also install the locks properly, ensuring there are no weak points that could be exploited. They can supply multiple sets of keys, document the key codes securely, and even offer master key systems for landlords managing multiple properties. Having a reliable locksmith you can call upon not only simplifies the process but ensures a consistent standard of security across all properties.

Choosing the Right Locks

Not all locks are created equal. For external doors, landlords should always opt for locks that meet British Standards and are approved by insurance companies. Anti-snap cylinders are highly recommended for uPVC doors, while mortice deadlocks or night latches are suitable for traditional wooden doors.

Window locks should also be checked and replaced where necessary. Ground-floor windows in particular are vulnerable entry points and should be secured properly before a new tenant moves in. A qualified locksmith can advise on the most appropriate locks for different types of doors and windows, ensuring comprehensive security throughout the property.

Making Key Management Easier

Changing the locks also gives landlords the chance to regain full control over key management. Over the course of a tenancy, keys can be copied, lost or even stolen without the landlord’s knowledge. Starting fresh with a new lock and a controlled number of keys ensures landlords know exactly how many copies exist and who holds them.

Landlords should always issue tenants with sufficient copies at the start of the tenancy and discourage unauthorised duplication. Some locksmiths offer restricted key systems where copies can only be made with proof of ownership, providing even tighter control over access.

Building a Professional Approach to Property Management

Treating key control seriously is part of running a professional and successful rental business. Changing locks as a matter of routine after every tenancy protects not only the physical property but also the landlord’s reputation.

A well-managed, secure property is more attractive to tenants, allows for higher rental values, and can even reduce insurance premiums. It’s a small investment that can yield long-term benefits, reinforcing the landlord’s commitment to high standards and responsible management.

Security Is a Priority, Not an Afterthought

In the busy world of property management, it can be tempting to overlook small details like changing locks. But when it comes to the security of your tenants and the protection of your investment, it should never be left to chance. Partnering with a reliable locksmith ensures the job is done properly, with locks fitted to the highest standards and advice available when needed.

In the end, taking security seriously sends a strong message: tenants are valued, properties are protected, and landlords are operating with care, responsibility and foresight.