Highlights included working with Whangaroa College students and taking them on Blue Light camps in Auckland and at Lonsdale Park, and helping then college student Charlotte Morunga in her campaign for a liquor ban in Kaeo.
He had enjoyed being an iwi liaison officer on Waitangi Day, with its opportunities to interact with other Maori and encourage new recruits. Mr Avery was also involved, along with local businesses and the district council, in getting CCTV cameras installed, giving the town extra security and reassurance.
His philosophy was to "treat others how you would like to be treated", he said.
Mr Avery started his working life as a panelbeating apprentice. He then joined the navy, drove trucks and joined the police, inspired by former Kaeo officers Jim Bratty and the late Paddy Whiu.
"It was because of Jim Bratty and the way he supported youth in a little town like Kaeo. He was an awesome role model," he said.
He began his police career at Auckland Central, followed by eight years in Rodney. When his "dream job" came up in Kaeo, he jumped at it.
While he still enjoyed policing, at 48 he now wanted a change of career and his own business. There were also family reasons for the move to Auckland, where the plan was to take up an apprenticeship in a building-related trade.
"It's never too late to learn," he added.
Ultimately he hoped to return to Kaeo to set up a business and take on an apprentice from the college.
A temporary constable will be appointed to cover the busy summer period, while recruiting for a permanent replacement is under way.
The Kaeo community organised a surprise farewell for Mr Avery at the fire station on Thursday evening.