WEST Coast has moved to lock away emerging forward prospect Oscar Allen after his excellent start to the season, adding two more years to his current contract.

Allen was already secured until the end of 2020, after inking a one-year extension to his draft contract last April.

But just five games into his career the 20-year-old tall has been tied down longer term.

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"I'm really excited to sign with the club until the end of 2022. I love the club and I love the people at the club," Allen said.

"They've been so welcoming of me in my first 18 months at the club and I couldn't wait to extend.

"As a young kid, I just want to focus on playing the best footy I can and helping the club in any way possible, so to get this done was a big milestone for me.

"Now I can just try to play some good footy and help the team any way I can."

Allen's maturity and level-headedness has struck those inside the club since he was drafted via pick 21 in 2017, after winning the Larke Medal in the NAB AFL Under-18s Championships.

The West Perth product was used at both ends of the ground in two games last season, but his understanding of where he fits has made him a valuable foil in the Eagles' forward line alongside twin towers Josh Kennedy and Jack Darling this year. 

Allen has booted six goals in three games – only one fewer than Darling – including three against Greater Western Sydney in round two.

"I'm feeling more and more comfortable out there every weekend," Allen said.

"Obviously being a young kid and only playing five or so games, I'm still building confidence each game when I'm out there.

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"But I'm really comfortable in terms of my relationship with the other forwards in the side and other team members.

"I'm loving the opportunity to play some senior footy."