This document discusses the impact of urban development on wetlands in Western Australia. It notes that the Perth metropolitan area has experienced a 2.9% increase in population in 2013, the fastest growth in the country, putting pressure on housing needs. As more housing is built to accommodate this growth, 25% of the Swan Coastal Plain wetlands are at risk of being compromised through impacts like disrupted hydrological systems, subsidence, and acid sulfate soil issues. The document advocates for water sensitive urban design, retained links between bushland areas, and rigorous planning to minimize impacts on unprotected wetland areas from urban expansion.