Nearly five years after the registration of Yued Aboriginal Corporation, Yued Nyoongar people are celebrating acquiring leasehold rights over reserve land held by the Aboriginal Lands Trust.

The lease was signed by WA Minister for Aboriginal Affairs Don Punch and Yued Aboriginal Corporation Chairperson Sharna Meinertz at a ceremony at Mogumber reserve on Tuesday morning.

The lease covering approximately 4,200ha is predominantly bushland but includes 2,000ha of viable farmland.

The former Moore River Native Settlement (later Mogumber Mission) and two burial grounds are not included in the lease area.

Yued Aboriginal Corporation will appoint a committee of Yued Nyoongar members and experts to develop a comprehensive plan for the property. Expressions of interest will be sought and appointments made by the Yued Aboriginal Corporation board.

While that plan is developed, the property will be offered for sublease to suitably experienced agricultural interests with a focus on regenerative farming practices.

Ms Meinertz said: "This is a day we've long dreamed of: this land is coming back to us."

"We will care for it and ensure that our people are generating an economic benefit we can invest in the property and our community," the Yued chairperson said.

"This is exactly what our Elders had in mind when they worked so hard for the establishment of Yued Aboriginal Corporation, and it is extremely satisfying to be able to deliver on the promise they made to our families."

Mr Punch said the agreement is "an important milestone" for the Yued People.

"It provides certainty and supports the Yued People's aspirations to manage and benefit from their Country," he said.

"It reflects the value of government and Traditional Owners working together to create lasting economic opportunities for current and future generations.

"Mogumber holds deep significance for many Aboriginal people, and its future must be shaped through respectful consultation and engagement."