In the school precinct, a Mentone lock change means cutting a rated deadlock into a solid post-war timber door that has only ever had a latch, then keying the laundry, garage and back doors to the same key. Off Balcombe Road, it means changing a unit's cylinder without breaking the complex's master key, so the driveway gate still opens afterwards.
True Locksmith has done both across Mentone, Victoria, for 30+ years, and the first question on the phone is always which kind of property it is, because the hardware on the van depends on the answer. The lock change service
explains the hardware; the Mentone locksmith page
covers everything else we do here.