"This collaborative approach could include other funders and is open for further discussion.
"We, as the advocacy group, are prepared to fundraise an agreed 'in kind' contribution on receipt of an agreement in principle from the listed parties."
A spokeswoman for the group, Linda Cholmondeley Smith, said the group had already held positive meetings with the district and regional councils.
"They have made an undertaking to move a resolution that enables us to go back to Parliament with their support to consider various options to preserve New Chum."
In December 2010 the land's owners, Coastland Land Trust Holdings, offered to sell the beach to the Crown and give back half the proceeds after a campaign against a subdivision plan at the beach was started.
But the deal fell over after separate valuations provided differed by about $10 million.
"Because they put that proposal to the Government a lot of people in New Zealand and around the world thought that New Chum had been settled and preserved, but it is not," said Ms Cholmondeley Smith.
In May, the Thames-Coromandel District Council approved a motion to agree in principle that it consider being a partner in the purchase of a reserve area for New Chum Beach subject to price, benefits and commitment of other funders.
The regional council said the owners of Te Punga Punga Station, which includes New Chum Beach, intended to submit a revised resource consent application for lots in the Whangapoua - not the New Chum - catchment before the end of next month with a view to a hearing in September.