An aerial view of the clifftop mansion and grounds of Graeme Hart in 2012. Photo / Brett PhibbsAn aerial view of the clifftop mansion and grounds of Graeme Hart in 2012. Photo / Brett Phibbs

The second of two fires in vegetation near the billionaire Graeme Hart's Glendowie mansion in Auckland last night. Photo / Auckland Police Maritime UnitThe second of two fires in vegetation near the billionaire Graeme Hart’s Glendowie mansion in Auckland last night. Photo / Auckland Police Maritime Unit

Robyn and Graeme Hart in 2019. Photo / Norrie MontgomeryRobyn and Graeme Hart in 2019. Photo / Norrie Montgomery

Graeme and Robyn Hart bought the site their mansion sits on for $2m in 1995. Photo / Brett PhibbsGraeme and Robyn Hart bought the site their mansion sits on for $2m in 1995. Photo / Brett Phibbs