The people at Responsible Wood have confirmed that certification under the unbrella of the Programme for the Endorsement of Forest Certification (PEFC) is available for recycled timber. You can contact Responsible Wood on (07) 3359 1758 and will find more information on their website here - https://www.responsiblewood.org.au.
Recycled timber certificationAnswered on 30-07-2020
Please note that our answer is based on the best advice available at the time. If the National Construction Code, Australian Standards or local requirements have been subsequently amended, our answer may no longer be correct in all details. For more information, please read our disclaimer.