The association secured nearly $100,000 in Department of Veterans' Affairs funding for the project to upgrade Mundijong war memorial, build the Anzac shelter on Paterson Street and construct a 1km historical walking trail between the two.
The walk features interpretive signage to tell the stories of local veterans and a new memorial plaque, funded by Alcoa, lists 344 veterans from the shire in the shelter.
A huge poppy shape filled with poppies made by the children of the shire has been placed beside the shelter.
Solar lighting costing $16,000 will light the memorial at night. Twenty smaller memorial plaques have also been placed beneath trees lining Paterson Street.
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READ NOWCommunity association member Kim Petersen said these were only some of numerous new features across the new facilities.
She said the project could not have been completed without the combined efforts of Karnet Prison Farm workers, the Serpentine Jarrahdale (SJ) Men's Shed and the SJ Youth Activity Group.
"It shows how much the SJ community respects our veterans and wants to acknowledge the sacrifices they made," she said.