The concept of the Coromandel becoming a Heritage Region also sparked the interest of Conversation Minister Maggie Barry who said it warranted further investigation.
But Reihana Robinson, spokesperson for The Upper Coromandel Landcare Association (UCLA), which represents residents who manage and own thousands of hectares of private land on the northern peninsula, said tourism marketing agencies and foreign NGOs have "no business driving the legislative and regulatory framework for our communities, defining our futures, and shaping our unique social and cultural development".
"While sounding attractive and providing a marketing tool for the tourism sector, an official IUCN designation would provide with certainty the legal basis for countless potential rules, obligations, restrictions and heavy cost burdens affecting individuals and communities up and down the peninsula for decades to come.
"Worse still, official status under IUCN rules would take our long tradition of local, democratic decision-making in Thames, Coromandel and Whitianga and send it to New York and Europe for final approval," Ms Robinson says. "That is far, far from our real Coromandel heritage."
Robinson confirmed that residents representing nearly 6,000 hectares around the Moehau Range, along with landowners and others across the Coromandel, have already expressed their opposition to the IUCN landscape proposal.
"Coromandel people have worked long and hard, in some instances for generations, to successfully protect and enhance our environment and traditional way of life. That's why we enjoy the iconic landscapes and lush bush that so many others come to experience. And we have done so, and can continue to do so, under the existing legislative framework of national and regional planning and policies."