The governing body has invited all social senior team contacts to a teleconference on April 16 to address the state of Basketball ACT's postponed winter competitions.

Advice from Basketball Australia has seen all leagues halted until at least June 1 with ACT officials now eyeing a late-July tip-off in a best-case scenario.

But Basketball ACT chief executive David Simpson is preparing for the constantly evolving COVID-19 crisis to delay a return to play far deeper into the year.

Staff in the Belconnen office are looking to cover all bases with senior winter competitions potentially set to carry into next year while juniors are in line for a different structure.

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"My competition manager has done a different scenario for every week right through until the end of the year," Simpson said.

"We've got everything from 22-week competitions down to five-week competitions, Slam competitions and extended into next year competitions.

"We've got a lot of models. We're having fortnightly catch-ups with all of our clubs to update them on progress and activity.

"We've got a lot of different scenarios going on. It depends on what exact dates we kick off as to whether we finish before Christmas or if we would continue into next year.

"There are different structures for juniors and seniors. Social senior competitions would go through until next year at this stage. Our juniors may change.

"We're finalising those models now, it's still in draft format."

Simpson says he has held one-on-one discussions with a number of club representatives with both parties conceding a decline in player numbers may be nearly impossible to avoid.

However Basketball ACT is accepting registrations - while not yet asking for registration fees - for the winter competitions to help craft draft fixtures.

But the player downturn is just one concern for clubs with a lack of potential training venues before a new season begins set to be a major blow.

Clubs across Canberra already struggle to find adequate training venues which has previously left Basketball ACT fearing the prospect of players walking away.

"Everyone is realistic, we might come out the back of it and people might be apprehensive about spending money, so there may be some downturn," Simpson said.

"On the flipside, there is also the line of thought that people have been cooped up inside houses and they may want to jump at competitions.

"Everyone is realistic that there is going to be a potential downturn before picking back up to our usual numbers.

"The other issue is not so much games, but clubs trying to find venues for training. Whilst we may say everything is going to open in June, clubs aren't necessarily guaranteed access to training venues straight away.

"A lot of them use school or government facilities which may not be open as soon as we are. That's obviously a concern, if you've got hundreds of teams trying to train and no venues open, the reality of them being ready for a competition is limited."