The NRL has been given the go-ahead to allow stadiums to open at quarter capacity from July 1.
New South Wales premier Gladys Berejiklian approved the move on Sunday in line with a nationwide easing of COVID-19 safety restrictions.
"If there is any outside organised event with ticketing and seating, up to 25 per cent capacity of that venue can be utilised for an event," Berejiklian said.
"It can be a concert, a music event, a sporting event. That is for venues with 40,000 capacity and lower.
"A 40,000 capacity can potentially have up to 10,000 people if it is done with strict guidelines in place."
None of the three stadia the NRL elected to use under its restart plans in New South Wales have a capacity of over 40,000, with Bankwest Stadium the largest at 30,000. Central Coast Stadium and Campbelltown Stadium cater for 20,059 and 20,000 supporters respectively.
A small number of fans have been allowed to attend NRL games this weekend in corporate boxes and the first match to benefit from the rolling back of limitations will be Canberra Raiders' round-eight clash with St George Illawarra Dragons at Campbelltown on July 3.
Everyone attending NRL venues this weekend has been subjected to temperature checks, and fans returning to stadiums will be required to observe social distancing rules, with one person every four square metres.