The works included improved access for visitors and a reconfigured interior, providing undercover space for bookable small events and picnics alongside boat hire.

A new hire boat operator, Leisure Boats, has begun trading. Craft include row boats, kayaks and paddleboats.

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Heathcote MP Lee Evans announced the restart of the "100-year tradition of boat hire in one of the state's most popular national parks".

National Parks and Wildlife Service Royal area manager Brendon Neilly said essential conservation work had been completed on the 80-year-old building.

"Visitors to Royal National Park have enjoyed spending time on the Hacking River at Audley with a boatshed serving the community since the late 19th Century," he said.

Mr Neilly said the project, along with upgrades to toilet facilities and landscaping at Allambie Flat and Ironbark Flat, had revitalised the precinct and conserved its heritage under the guidance of the 2006 Audley Masterplan.

"The Audley Boatshed repair and adaptive reuse project has provided a stimulus to the local economy during construction and will ensure the historic precinct continues its long tradition of welcoming visitors to the picturesque waterway," he said.

"This project is part of the biggest infrastructure investment in NSW national parks history, delivering around $450 million of priority works that benefit the community and boost nature based tourism across the state."

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