There is no single law forcing a lock change between every tenancy, but a landlord has a duty to provide a secure home and to protect a tenant’s right to quiet enjoyment. In practice that means the outgoing tenant must not retain access, so changing the cylinders between tenancies is the safe, expected standard and protects you if anything goes wrong.
Between tenancies, landlords often ask whether they are legally required to change the locks. The honest answer is that it is less about one specific rule and more about two duties that together make a lock change the sensible default.
The two duties that matter
- Providing a secure home. A landlord must let a property that is reasonably secure. If a previous tenant or their associates still hold working keys, that standard is hard to argue you have met.
- Quiet enjoyment. A new tenant has the right to occupy the home without others being able to enter. An old key in the wrong hands undermines exactly that.
You also cannot be sure how many keys the outgoing tenant cut over the course of the tenancy. As with a house move, the only way to guarantee the new tenant controls access is to change what the keys fit.
Why it protects you, not just the tenant
If a new tenant suffers a break-in or theft with no sign of forced entry, and the locks were never changed, you are in a very weak position. A documented lock change between tenancies is cheap insurance against that scenario and against a dispute over deposits or liability.
Treat a between-tenancy lock change the same way you treat a gas safety check: a routine, low-cost step that protects everyone and removes an argument before it can start.
Doing it efficiently across a portfolio
For landlords and agents with several properties, a few practical tips:
- Change cylinders, not whole locks, to keep cost and time down between tenancies.
- Keep a record of the date and property, so you can evidence it if ever questioned.
- Consider keyed-alike sets per property so each home has one simple key, while keeping different properties on different keys.
- Build a relationship with one local locksmith who can turn jobs around quickly between tenancies rather than calling a stranger each time.
Doctor Locks works with landlords and letting agents across the West Midlands and can turn around between-tenancy changes quickly. See our lock change and residential locksmith services, or read why a lock change matters when you move in. We cover areas with high rental demand such as Kings Heath, Harborne and Stourbridge.
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Doctor Locks aims to reach you within the hour across Birmingham and the West Midlands. Read more about Lock Changes.
Frequently asked questions
Are landlords legally required to change locks between tenancies?+
There is no single law mandating it for every tenancy, but landlords must provide a secure home and protect the new tenant’s quiet enjoyment. Changing the cylinders is the practical way to meet both duties and limit your liability.
Can I just change the cylinders rather than whole locks?+
Yes, and for most doors that is the efficient choice. Swapping the cylinder makes every previous key useless without the cost of replacing entire lock assemblies.
Do you offer a quick turnaround for landlords?+
Yes. We regularly carry out between-tenancy lock changes for landlords and agents and can usually attend promptly, often the same day, to keep voids short.
Jason has been a locksmith since 1999 and runs Doctor Locks personally, attending jobs across Birmingham and the wider West Midlands. Every article here is written from real work on real doors, not theory.
