Australia’s largest private property developer Walker Corporation has proposed plans to dredge and reclaim a wetland in Brisbane's south to construct 3,600 homes.

The Queensland government states Toondah Harbour is a “priority development area”, but the project is being criticised as the wetland is home to endangered shorebirds.

The proposal would also require the approval of the federal and Queensland governments.

This is the third attempt in three years to dredge the Ramsar-listed wetland.