As a landlord, maintaining the security of your rental property isn’t just good practice—it’s your legal and moral responsibility. One of the most frequently overlooked aspects of this responsibility is changing the locks between tenants.
Whether you’re managing a single flat or a portfolio of properties, rekeying or replacing locks when tenants move out is a simple but crucial step to protect your investment and your future tenants. In this guide, RJ Parker Locksmiths shares the key reasons to change locks, the legal considerations, and how to approach it practically and cost-effectively.
Why Should You Change the Locks Between Tenants?
Changing the locks after a tenancy ends is not a legal requirement under UK law—but it is highly recommended. Here’s why:
You Don’t Know Who Still Has a Key
Even if tenants return all copies of their keys, you can’t be certain others don’t exist. Previous tenants may have made duplicates for friends, family, or cleaners—intentionally or otherwise.
It Protects Your New Tenants
Your incoming tenants deserve peace of mind knowing no one else has access to their new home. Failing to change the locks can leave them vulnerable and could expose you to liability.
It Reduces Liability and Insurance Risk
If a break-in occurs and there is no sign of forced entry, insurance companies may refuse to pay out—especially if it’s proven that someone gained access using an old key.
It’s a Mark of Professionalism
Changing the locks signals that you’re a responsible landlord who takes tenant security seriously. It can also help maintain your reputation with letting agents and renters alike.
When Should You Change the Locks?
We recommend changing or rekeying locks in the following situations:
- Between every tenancy, regardless of circumstances
- If a tenant leaves under dispute or eviction
- When keys are lost, stolen, or not returned
- After a break-in or attempted burglary
- If you suspect unauthorised copies have been made
If you manage Houses in Multiple Occupation (HMOs), you may also wish to change locks to individual rooms rather than the main entrance only.
Legal Considerations for Landlords
While not legally required, there are a few regulations to keep in mind:
Security Obligations Under the Landlord and Tenant Act 1985
You must ensure the property is safe and secure at the start and throughout the tenancy. Failing to change the locks could be seen as negligence in the event of a security breach.
The Tenant Fees Act 2019
Landlords and letting agents cannot charge tenants for lock changes unless it is due to lost keys or damage caused by the tenant. You must cover the cost between tenancies.
Right to Quiet Enjoyment
Once a tenancy has started, you cannot change the locks without the tenant’s consent. This makes it essential to carry out lock changes between tenancies—not during.
Types of Lock Changes Available
At RJ Parker Locksmiths, we offer a range of services tailored to landlords and letting agents:
Lock Replacement
We completely remove and replace the existing lock with a new one. Ideal when the existing lock is outdated, damaged, or not insurance compliant.
Lock Rekeying / Cylinder Change
More cost-effective than full replacement, this involves changing the internal mechanism of the lock so old keys no longer work—perfect for modern euro cylinders.
Master Key Systems
For landlords with multiple properties or HMO rooms, a master key system allows access to all locks with a single key, while tenants still have keys to individual areas only.
What Types of Locks Should You Install?
Choose locks that meet British Standard BS3621 or TS007 3-star rating for compliance with most insurance policies. Common options include:
- Euro cylinder locks (for uPVC and composite doors)
- Mortice deadlocks (for timber doors)
- Rim cylinder locks / night latches (commonly used on front doors of flats)
We always advise using locks with anti-snap, anti-drill and anti-pick features for added security.
Checklist: Changing Locks Between Tenants
Here’s a step-by-step guide for landlords:
- Book a locksmith appointment for the day after the previous tenant vacates.
- Confirm return of all keys, including window and garage keys.
- Inspect the condition of existing locks—check for wear, damage or stiffness.
- Upgrade where necessary to meet current insurance and safety standards.
- Record the new key inventory, and keep a labelled spare securely.
- Hand over keys and security instructions to the new tenant at check-in.
We also recommend testing all locks before handing over the property.
Why Choose RJ Parker Locksmiths?
We’re trusted by landlords, property managers and letting agents across because:
- We provide fast, reliable appointments, often same-day
- All our work is fully insured and guaranteed
- We offer non-destructive entry methods and professional installation
- We understand the needs of landlords and tenants alike
Whether you manage one property or dozens, we make lock changes simple and stress-free.
Final Thoughts
Changing the locks between tenants might feel like a small detail, but it’s one that makes a big difference to safety, compliance and tenant trust. It only takes one former tenant with an old key to create a serious risk. For a small cost, you gain peace of mind, better protection, and a more professional rental experience for everyone involved.
Need to book a lock change between tenants?
Get in touch with RJ Parker Locksmiths today for trusted, affordable, and efficient service.