The cost of the clean-up for the 2019/2020 bushfire season will be split between federal and state governments and will be free for residents whose homes were destroyed in the fires.

Bushfires destroyed 448 homes in the Bega Valley, but the region's council believes up to 40 per cent of the owners of these properties have not registered for the clean-up.

READ MORE: Bushfire damage count: two-thirds of Far South Coast burnt, eight lives lost

"We're worried that people have been lost and confused by the multiple registrations they have had to undertake," Bega Valley Shire Mayor Kristy McBain said.

"The hoops people have had to jump through are not acceptable, a point we will continue to make strongly to state and federal government, this has been a massive leaning process for the future.

"But in the here and now we need to get people on that clean-up list."

Also, Labor's Shadow Minister for Rebuilding and Recovery Yasmin Catley is concerned lead contractor Laing O'Rourke will not meet the original operation deadline that had been reported by the state government.

READ ALSO: Lead contractor for bushfire clean-up starts work on Bega Valley properties

Ms Catley claimed during a hearing on budget estimates in NSW Parliament on Tuesday Deputy Premier John Barilaro could not guarantee the clean-up would be finished by June 30.

In January, NSW Premier Gladys Berejiklian said she hoped the "bulk of the clean-up" would be done by the end of June, the AAP reported, and the date of June 30 was understood by both Bega Valley Shire Council and the NSW Police to be when the clean-up would be completed.

Ms Catley also said during budget estimates government bureaucrats had been unable to point to key performance indicators or benchmarks for Laing O'Rourke to demonstrate their progress on the clean-up effort.

"These bushfire survivors, many of whom would be paying both a mortgage and rent on temporary accommodation, need their destroyed properties cleaned up quickly so they can tackle their rebuild projects, but every bit of dithering and delay by this government just adds to their costs and their heartache," Ms Catley said.

In response to Ms Catley, Mr Barilaro said the majority of the clean-up work was expected to be completed across the state by June 30.

"The clean-up is a mammoth and complex task, with more than 2400 destroyed properties across the state," Mr Barilaro said.

"A number of factors have constrained the start of the clean-up in the north, including access and weather-related issues.

"Safety has always been the number one priority and, before any clearing work could start, hazardous materials, such as asbestos, needed to be identified and contained."

So far, 13 Laing O'Rourke crews have been mobilised across the state and 1000 local sub-contractors have registered to assist in the clean-up.

By the end of March it is expected that 250 properties will be cleared of debris, according to the NSW government.

To register for the free clean-up visit the Service NSW website or call 13 77 88.

To check if you are registered for the clean-up call or email Laing O'Rourke on 1800 007 539 and nswbushfirecleanup@laingorourke.com.au.