In property preservation, lock changes are a critical service used to secure vacant or foreclosed properties. This process ensures that unauthorized individuals, such as former tenants, previous owners, or trespassers, cannot access the property, protecting it from vandalism, theft, or unauthorized occupancy. Lock changes are often one of the first steps taken when a property is repossessed or when a lender gains control after a foreclosure.

During the lock change, all exterior locks are typically replaced, and new keys are issued to authorized personnel, such as property managers or contractors. In some cases, specialized locks with coded systems may be installed to allow controlled access for maintenance teams or inspectors. This process also involves documenting the change to ensure proper tracking of access and security.

Lock changes in property preservation are vital for maintaining the integrity and value of the property while it remains unoccupied, minimizing risks and potential damage that could complicate future resale or occupancy.