In response to a changing industry, Ledonne Constructions Pty Ltd has been proactive on the continual improvement on its management systems.

On the 20th of April 2010, we had our Integrated Management System accredited by QMS Certification Services. The System combines the 3 management systems (Quality, WHS, and Environmental) listed below. The certificates below indicate compliance with ISO9001:2008 (Quality), AS4801:2001 (WHS) and ISO14001:2004 (Environmental).

Current ISO9001:2008 Certificate (PDF)

Current AS4801:2001 Certificate (PDF)

Current ISO14001:2004 Certificate (PDF)


Ledonne Constructions Pty Ltd is committed to quality and has developed a Quality Management System to AS/ANZ ISO 9001:2008. Our system has achieved third party accreditation with QMS Certification Services, beginning 2007, currently accredited to be re-audited 21 April 2016.

Prior to that, our system was accredited to AS/NZS ISO 9002 by Quality Assurance Services and by NCS International.


Ledonne Constructions is committed to sound WHS practices. As such, we have developed a WHS Management System in compliance with the Work Health and Safety Act 2011, and the Workers Compensation Act, 2010.

We are now proudly the 287th contractor to have our system accredited under the Federal Government’s Building and Construction OHS Accreditation Scheme. Our accreditation expires on the 6th June, 2015.

Our compliance with AS4801:2001 currently accredited to be re-audited 21 April 2016.

Australian Government Building and Construction OHS Scheme Accreditation (PDF)


The management and staff of Ledonne Constructions are committed to the conservation of the environment and minimising impact during construction of our works.

We have a wealth of experience in successfully undertaking construction in environmentally sensitive areas such as the Blue Mountains, Central Coast, Sutherland, Smiths Lake, Royal National Park in NSW and the Ramsar Wetland in East Gippsland, VIC.

Our Environmental Management System has previously been accredited by the NSW Department of Commerce to the NSW Government Environmental Management System Guidelines derived in accordance with Australian Standard AS/NZS 14001 1996.

Our compliance with ISO14001:2004 currently accredited to be re-audited 21 April 2016.