Western Australia · CCA 2004
Calculate your Construction Contracts Act 2004 (WA) payment claim deadlines. WA uses calendar days — not business days. Residential: 14 days. Commercial: 42 days. Adjudication: 28 calendar days after response due date.
Construction Contracts Act 2004 (WA) · Calendar days (not business days) · Applies to written contracts only
Western Australia — CCA 2004 (different to SOPA)
Uses calendar days, not business days. Applies to written contracts only. No endorsement required on payment claims.
Adjudication body: Building and Energy (WA)
The date the respondent received your WA payment claim.
For WA CCA disputes or adjudication applications under the Construction Contracts Act 2004, a specialist WA construction lawyer can advise on your options.
Western Australia does not use SOPA. Instead, the Construction Contracts Act 2004 (CCA) governs payment disputes. Key differences from SOPA states:
Calendar days: Weekends and public holidays count — unlike the business day counting in NSW, VIC, QLD, SA, ACT and TAS.
Written contracts only: The CCA only applies to written construction contracts. Oral contracts are excluded.
No endorsement required: WA payment claims do not need a statutory endorsement statement.
Payment Response: 14 calendar days for residential contracts. 42 calendar days for commercial and other construction contracts.
Adjudication: Must be applied within 28 calendar days after the payment response due date (or earlier if the response was received early).
WA CCA — Frequently Asked Questions
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