Trewarn PlCity of Armadale » BedfordaleDo you (or did you) live on Trewarn Pl in Bedfordale, WA? How has Trewarn Pl changed over the years? What was Trewarn Pl like in the early days? Who were the original residents of Trewarn Pl? Ask a question or tell your story below... April 17, 2017 by PerthMETRO.net zoom out · satellite view · hybrid (zoom out) Rate this street If you would like to be a custodian/moderator of Trewarn Pl, please contact us.