Located 1,600 km off Australia's east coast on Norfolk Island, KAVHA comprises over 40 historic structures and standing ruins. It has been managed as a cultural heritage portfolio since the 1980s, following initial conservation efforts in the 1960s.

Purcell was initially commissioned by the Commonwealth Heritage Manager for Norfolk Island, Australia, to review the Condition and Maintenance Manual for the buildings and standing ruins. The goal was to ensure that practices aligned with current best practice standards and the principles of the Australia ICOMOS Burra Charter. A report outlining recommendations for changes to the work specifications was provided, carefully substantiated through demonstrated best practice and contemporary research. More recently Purcell has updated the Conservation Management Plan and roof conservation works for Government House, and together with consulting engineer AC Been Consulting, have undertaken a Condition Audit of all historic features across KAVHA in support of a prioritised maintenance program.

Purcell developed a Heritage Maintenance Manual to guide a preventative maintenance program, outlining best practice for cyclical and routine tasks crucial to preserving the heritage site. The manual includes decision-making and condition grading tools for prioritising work, along with inspection forms and technical data sheets to assist those carrying out traditional maintenance practices.

The site's isolation and constraints on freight, passenger transport, and resources pose significant challenges. To restore best practices in the use of mortars, renders, and surface coatings, practical and pragmatic guidance was essential, considering the limited access to materials and the need for appropriate trades training.

Our Australian teams continue to lead various conservation, management, and maintenance projects at this remarkable UNESCO World Heritage Site, highlighting their dedication to preserving and enhancing Norfolk Island's cultural landscape.