"We have tens of thousands of dollars' worth of machinery in the shed, along with equipment, which was probably just minutes away from going up, especially if the fuel in one of the machines had caught alight," he said. "We were lucky the greenkeeper saw it in time and that the Onerahi brigade got here so quickly.
"If they had been five or 10 minutes later it would have been a disaster as it was just starting to get hold of the framework."
The damage to the greens was not bad enough to prevent yesterday's Pacific Homes Golf Day fundraiser from going ahead.
Mr Atherton said if anybody had information about the vandalism and arson attack, or had seen or heard anything suspicious near the course early yesterday, they could contact Onerahi police on (09) 4260222.