Under-siege war hero Ben Roberts-Smith has put his Sunshine Coast hinterland estate on the market as he continues to defend himself over claims about his service in the SAS.

The Victoria Cross recipient and his wife, now estranged, bought the five-bedroom, two-storey home in Ilkley for $1.45 million in 2015.

The sprawling property is set to fetch more than that when it goes to auction next month.

"Unfortunately due to changes in our employment, lifestyle and our children's school, the time is right for us to move back to Brisbane and to sell," the couple said in a statement released by their real estate agent.

"It's a magnificent area and a beautiful home."

The retired Special Air Service (SAS) corporal, who now works as general manager with Seven West Media in Queensland, is currently suing The Sydney Morning Herald, The Age and The Canberra Times for defamation in the Federal court over a series of articles he says wrongly characterised him as a war criminal.

The listing follows revelations last week, leaked by News, that Roberts-Smith's boss Kerry Stokes, who is also chairman of the Australian War Memorial, had loaned him as much as $1 million for his legal defence.

Roberts-Smith has put his Victoria Cross medal up as collateral for the large loan, Mr Stokes confirmed in a statement last week.

The listing comes just days after the release of a damning inquiry into the behaviour of elite Australian troops in Afghanistan.

Ray White Buderim agent Kathryn Willshire said the Ilkley Road property was one of the best acreage estates in the region.

"Ilkley is just eight minutes from Buderim, which is one of the most popular home buying destinations in all of Queensland," Ms Willshire said.

"Everyone is looking for a tree change or a sea change in 2020 and here you can have the best of both worlds as it's only 20 minutes to the beach, yet set in a stunning bush environment."

The private-gated, two-storey home features five bedrooms and four bathrooms and sits on a huge 35,612 sqm block.

"The view is arguably one of the most breathtaking settings I have ever seen," Ms Willshire said.

"The owners have created a formal manicured garden brimming full of roses and gardenias.

"The elaborate formal dining area overlooks a charming internal French Provincial inspired courtyard."

Sunshine Coast hinterland properties have been in strong demand with buyers seeking a treechange since COVID-19.

Roberts-Smith has denied any wrongdoing during his time in Afghanistan or Iraq.

Originally published as Under-siege war hero puts Qld mansion on market