Locksmiths

Why Changing the Locks After Completion Is Important

Completion day is when ownership of a property officially changes hands and the keys are handed over to the new owner. While this is an exciting moment for buyers and a major milestone for sellers, one simple but important step is often overlooked: changing the locks.

Although it may seem unnecessary, replacing or re-keying the locks after completion is a sensible security measure that can provide peace of mind for everyone involved.

You Can’t Be Certain Who Has Keys - Over the years, a property may have had several keyholders.

Previous owners may have given spare keys to: 
Family members
Neighbours
Tradespeople
Cleaners
Dog walkers 
Previous tenants

Even if the seller returns all the keys they have, it’s impossible to guarantee that no additional copies exist.

Changing the locks ensures that only the new owner has access to the property. It’s a Quick and Affordable Security Upgrade Replacing locks is usually quick and relatively inexpensive compared with other moving costs.

Many homeowners choose to change the locks on:
The front door
The back door
Patio or French doors
Garage doors
Side gates
Outbuildings

Some people also take the opportunity to upgrade to more secure or insurance-approved locks.

Insurance Considerations Some home insurance policies require properties to have specific types of locks, such as British Standard (BS3621) locks on external doors.

Changing the locks when you move in allows you to make sure your property meets your insurer’s requirements.

Peace of Mind - For the New Owner Moving into a new home is a major life event, and feeling secure in your property is important. Knowing that only you and the people you trust have keys to the house provides reassurance from day one.

What About Sellers? - Sellers generally do not need to change locks before leaving, but it is good practice to ensure that all keys you hold are handed over to the estate agent or new owner on completion day. This helps the process run smoothly and avoids confusion.

Final Thought - Changing the locks after completion is a small task that can make a big difference to your security. For most buyers, it’s one of the first things worth doing after collecting the keys to their new home. Taking this simple step ensures your new property truly feels like your home from the moment you move in.