A door lock extender and method of using the door lock extender in connection with a control panel box. The door lock extender includes an extender base having a lock slot for accepting a tang latch of a lock and an extender latch that is configured to engage a catch member of a control panel box. In use, the tang latch of the lock is inserted into the lock slot of the extender base. The extender latch engages the catch member on a housing of the control panel box locking a door to the housing while providing sufficient clearance for passage of a cable between the door and the housing.