Olivia Newton-John, cancer survivor and  Grease  star, has sold her retreat of 40 years in the Byron Bay hinterland  to an unknown buyer. She has had the 136-acre property on the market for 5 months, and it is unknown how much the property went for after it was listed for more than $5 million.

Newton-John bought the home back in 1981 for $622,000 as a country escape as her fame rose to new heights after the musical success of her song  Physical  and the 1978 box office hit that was  Grease.

The home includes a pasture,  creek, two dams as well as a rainforest of more than 10,000 planted  trees.

When it was listed  in February this year, Newton-John’s purchase of the property almost 40 years ago  had been about “having a peaceful base that was completely private [and] that was true to who she is: the animal lover and the environmentalist”, according to  Domain.

The original cottage was rebuilt in 2002 into a French-inspired country house with stone arches and vintage timber doors. There is also a country kitchen and a self-contained guest retreat, as well as a pond and a tennis court.

“The expansive view from the farm is breathtaking and captured my heart all those years ago,”  Newton-John told  Domain  when it was listed.  

“The 136-plus acres gives total privacy with peaceful, calming energy.”

The home has four bedrooms and three bathrooms.

Jillian  McGrath, who is one of Newton-John’s oldest friends, was the obvious choice to sell the property as she is now selling real estate at McGrath Estate Agents. Settlement will reveal the total price of the country escape.

Scroll through the gallery above  to take a tour of the peaceful home and property.