The $2.5 million park features a robot-themed cubby house, dual flying fox, basketball half-court, climbing structures and tunnel slides.
It is on the corner of Mason Road and Doryanthes Avenue.
Stockland WA general manager Col Dutton said the development of the park had been a community effort.
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READ NOW“Newhaven locals and youngsters from the Piara Waters Primary School provided us with details as to what the park should feature. The result is a unique, creative family-friendly outdoor space that allows kids of all ages to let their imaginations run wild,” he said.
Mr Dutton said a large number of trees had been retained through planning and consultation with the City of Armadale.