ONE of Central Queensland's unique properties is being listed for sale for the first time.

The largest freehold property on Great Keppel Island will be put up for tender or auction next month by the Svendsen family.

The 9015sqm beachfront property has been in the Svendsen family for more than 63 years and has been jointly owned by three brothers since their parents passed away.

It is believed Tower Holdings offered to buy the property about six years ago for $4million, but Chris Svendsen said their mother wasn't ready to sell at that point.

"One brother lives in Innisfail and has no intention to live there and I don't go there much," he said.

"Our youngest brother was born there and has lived there all his life."

Mr Svendsen said there was still some legal work to be done before the property could be officially listed for sale and it hadn't been decided if it would be put up for auction or tender.

He said they were open to offers, but were still trying to assess the value of the unique property.

The property has two beach frontages on the northern and western sides.

There are two houses, a shed, a cabin and two permanent tent sites which are used as eco-friendly holiday accommodation.

Inquiries can be directed to Kev Doolan at The Professionals, Emu Park.