The iconic Bowning Hill, open to the public for one day each year for the popular Can Assist walk, is being sold by owners Stuart and Frances Atkins.

The sale had been touted by Can Assist Yass Valley Branch organisers last year, who said 2018 may have been the last time the hill would be open to the public, depending on the new owner's plans.

The couple is relocating to the UK for sport. Both enjoy target crossbow and Mr Atkins is a reigning champion.

Bowning Hill is 150 acres and the adjoining vacant block, Northside is 51 acres, with subdivision consent, subject to final registration.

The house located at the bottom of the hill includes four bedrooms and two bathrooms with dual occupancy potential.

At the top of Bowning Hill, views stretch over Yass Valley and the Brindabellas.

"It's not too often that you get the opportunity to purchase such a landmark that thousands of people drive past every day," real estate agent George Southwell of Ray White Rural Yass.

The property was just one big block when the Atkins bought it in 1997. Now it's a small farm, separated into five paddocks, Mr Atkins said.

"We improved the place with removal of weeds and made it quite accessible for the stock. It also has an abundant wildlife population," he said.

"We have sugar gliders, wombats, lizards, birdlife, kangaroos, rock wallabies and wedge tail eagles living on the hill, with echidnas in the garden digging their nests."

Mr Southwell said the likely buyer could be an introductory level farmer or a professional seeking a tree-change weekender.

The couple has around 100 head of sheep on the property and there is a single stand shearing shed.

"However, many uses could be adapted by new owners from an outdoor sports destination, suitable family property or even a great property to retire to," Mr Southwell said.