What should owner do ? When developer close down and strata title not yet out. 

Do you mean after or before property handover to owner?

While the developer still holding the strata title under company name when they close down?

Look for Liquidator who take over

@domng while still under master title. 

After few year completion

If I am not mistaken you would need to apply from the Authority but would need the consent from the Management or the Liquidator.

panic and give up! hahaha just joke! go to tribunal and report

normally the title will handover to someone 

@freemanwoo good sharing