Police have released the names of the two people who died in a landslide in Welcome Bay.

Ten-year-old Austen Keith Richardson and his grandmother, 71-year-old Yao Fang, lost their lives when the house they were in was severely damaged by the landslide.

The incident occurred on Welcome Bay Rd last Thursday.

Police say they are providing ongoing support to the grieving family.

The deaths have been referred to the coroner for further investigation.

'Absolutely devastated by the loss'

In a statement, Austen's parents Keith and Angel said they are "absolutely devastated by the loss of our treasured son and his beloved Nai Nai".

"Austen was the much-loved only child of Keith and Angel, and Fang’s only grandchild," they said.

"A gifted musician, Austen loved piano, was extremely mechanically minded, loved building Lego, riding motorbikes, Pokémon and solving math equations.

"The weekend before the tragedy, we visited the Kumeū Classic Car and Hot Rod Festival before surprising him with his dream motocross bike from a mate on the way home. This will forever be a treasured memory."

Keith and Angel said their son spoke Mandarin fluently, was proud of his Chinese heritage and loved visiting China on their trips back.

"We were lucky to have Fang spend so much time with us as a family. She was a beautiful mother and grandmother, deeply caring, so generous and always prioritising looking after others ahead of herself."