Lightening quick small forward Zac Bailey is staying with Brisbane until at least the end of 2021 after signing a two-year contract extension.

The 18-year-old has made a big impression in his first season, playing 10 games after being taken with the 15th pick in last year's AFL Draft.

Bailey told AFL.com.au it was an easy decision to extend his stay, despite having more than 12 months remaining on his initial deal.

"I've enjoyed my time at the club so far and with all the other boys re-signing it was an easy decision to be honest," Bailey said.

"The whole club has been really good over the first seven or eight months and I want to stay with them for the next couple of years."

Bailey joins No.1 draft pick Cam Rayner (2021) and second-year stars Hugh McCluggage (2021) and Alex Witherden (2020) as young Lions to recommit to the Club this year.

The Northern Territory product moved to Adelaide to attend boarding school and said the transition to professional life in Brisbane had gone well.

He is living with teammates Tom Cutler and Dan McStay, and credits them with making him feel comfortable in his new environment.

Bailey made his debut against premier Richmond at the MCG in round four – a game the Lions were hammered by 93 points in – and played the next 10 games before being left out last week.