In the Wollondilly and Wingecarribee Shires 188 registered properties are eligible for the NSW and Federal Governments free opt-in clean-up program. As of 20 June, 155 have been cleared.

A Laing O'Rourke spokesperson said the team would "continue rolling out machines on the ground to help clear further properties as quickly as safely possible" this week.

"We're also working hard to identify any more property owners who were bushfire affected, but have not registered," the spokesperson said.

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"To achieve this, Laing O'Rourke has been working with local Service NSW outlets and councils to cross reference all of their data and proactively contact anyone identified as having experienced bushfire damage.

"So far, this has uncovered over 100 new registrations, a number we expect to rise as these calls are completed."

It is not too late for bushfire-affected residents to register for the clean-up program.

"Please check in with your neighbours, friends and family to ensure that they too have registered," the spokesperson said.

"Every person who has registered should have heard from Laing O'Rourke by now.

"So, if you haven't heard from the team, please get in touch to double check your registration and get an update on your clean-up."

Visit https://www.service.nsw.gov.au/transaction/register-opt-nsw-bushfire-clean or call 13 77 88 to register for the clean-up.