Spokesman and former Fairbridge resident David Hill has unveiled designs for the $1 million project which have received funding and approval for work to go ahead.

"All the green lights are on," he said.

"Construction will start in early October. It will be a 16-week construction."

Mr Hill said the official opening was planned for Sunday March 15, which is the regular annual weekend for the Fairbridge reunion.

"There are only 200 survivors of the 1000 who went to the school and I think most of them will be there," he said.

"They will get out of their sick beds to come to this."

Mr Hill said the park, which is on former Fairbridge Farm land between the Mitchell Highway and Molong Creek six kilometres from Molong, would help restore self-esteem to the many children sent to the farm.

Between 1938 and 1974 nearly 1000 underpriveleged British children, some as young as four years, were sent to Australia without their parents.

The boys were trained in farming and the girls in domestic service.

Mr Hill said many were embarrassed to admit they had been a 'Fairbridgean.'

"A lot of Fairbridge children have got their dignity and pride back," he said.

The park has been designed by leading Sydney architect Leonard Lynch who has worked with Mr Hill and other former Fairbridge children.

Mr Hill said the park was laid out to show four stages of the children's journey connected by a winding two-metre wide path from the current roadside rest and parking area at the site.

He said the first stage would show the children's origins in England with large sculptures of children.

The second stage will be the journey from England with a maze-like series of waist-high grasses depicting the ocean waves.

Mr Hill said the third stage would show life on the farm.

He said the floorspace of a typical Fairbridge cottage would be on display after the family of former Fairbridgean Eileen Foakes donated $20,000 to the project.

The centrepiece will be the former Fairbridge bell.

"Our lives were dictated by the bell," he said.

The fourth stage will show outcomes for the children.