Civil Procedure texts are shelved at 347.94.
Subject terms to search in the catalogue include: Civil procedure -- Australia and Civil law -- Australia
There are a number of "major texts" in this area with regular editions being released. Check the catalogue for details of the current edition.
CCH iKnowConnect - Litigation and Court Practice Collection includes:
Lexis Advance - Litigation, Evidence and Procedure includes:
Costs
Westlaw Australia - Digest
CCH iKnowConnect - see Litigation and Court Practice Collection Cases
District Court of WA website - only Civil judgments available
State Administrative Tribunal (WA)
Note: Magistrates Court of WA decisions are not publicly available or searchable.
Transcripts of decisions may be available if you are a party to the matter.