Police said the 14-year-old was last seen at Green Point, near Gosford, about 10pm yesterday.
Jess said he bought a train ticket at Gosford train station, probably after walking from the nearby suburb, and was likely heading for Penrith, in Western Sydney.
“He has James’ phone so James is not contactable.
“We are desperate to know he’s ok and if he doesn’t want us to know exactly where he is, that’s ok we just desperately want to know he’s safe.”
Police, who are helping in the search, said Kade was last seen wearing a white T-shirt, dark blue North Queensland Cowboys NRL shorts and carrying a black bag.
They described him as of Caucasian appearance and about 170 centimetres tall with a medium build, short light brown hair and blue eyes.
Anyone with information should call their local police station or Crime Stoppers on 1800 333 000.