Residents of the evacuated Mascot Towers building are unlikely to return home before the end of the year, as investigations into the cause of damage to the unit block centre on nearby construction.

Owners of apartments in the cracked tower block attended an extraordinary general meeting on Thursday night to vote on whether to take out a $10 million loan to pay for early remediation works.

At the meeting, apartment owners passed a motion to pay the $7 million levy plus GST, rather than the previously estimated $10 million, which included a 30 per cent contingency fund.

The vote - which took place after 11pm on Thursday - was not unanimous.