1. Field Name and Definition

Supporting Documentation refers to any relevant evidence that substantiates the work performed, materials supplied, or services rendered as claimed in your payment claim. This includes, but is not limited to, purchase orders, delivery dockets, timesheets, variation orders, site instructions, photographs, and correspondence that validates the claimed amount.

This field appears on payment claims to provide verifiable proof of your entitlement to payment. Under the Building and Construction Industry Security of Payment Act 1999 (NSW) ("the Act"), while supporting documentation isn't mandatory for a valid payment claim, including it significantly strengthens your position and helps prevent payment disputes.

2. Legal Requirements

Statutory Framework

The Act doesn't explicitly require supporting documentation to be attached to a payment claim. Section 13(2) sets out the mandatory requirements for a valid payment claim, which include:

• Identification of the construction work or related goods and services
• The amount claimed
• That it's made under the Act

However, the absence of a specific requirement doesn't diminish the practical importance of supporting documentation.

Case Law Clarifications

Consequences of Omission

While omitting supporting documentation won't invalidate your payment claim, it may:

• Increase the likelihood of a payment schedule disputing your claim
• Weaken your position in adjudication proceedings
• Delay payment while the respondent seeks clarification
• Create opportunities for the respondent to raise genuine disputes

3. Practical Guidance

Step-by-Step Instructions

1. Identify Relevant Documentation: Review the work completed during the claim period and match each claimed item to supporting evidence.
2. Organise Your Documentation: Create a clear index or schedule, number each document sequentially, and cross-reference to specific line items in your payment claim.
3. Compile Essential Documents: Gather signed daily reports, approved variation orders, time and material records, signed delivery dockets, quality certificates, and dated progress photos.

Presentation Best Practices

• Use a clear filing system (electronic or physical).
• Include a summary sheet linking documents to claim items.
• Ensure all documents are legible.
• Highlight relevant sections in lengthy documents.
• Maintain chronological order where applicable.

4. Common Mistakes and How to Avoid Them

Information Overload

Mistake: Attaching every project document.
Solution: Include only relevant documentation that directly supports claimed amounts.

Missing Signatures

Mistake: Including unsigned delivery dockets or site instructions.
Solution: Ensure all documents requiring authorisation are properly signed.

Poor Organisation

Mistake: Providing unsorted bundles of documents.
Solution: Create a clear index and logical filing structure.

While these errors won't invalidate your claim under the Act, they cause delays, provide grounds for disputing amounts, and damage your credibility.

5. Risks of Not Including Supporting Documentation

Legal & Adjudication Risks

Without documentation, you face an increased burden of proof in adjudication. Adjudicators rely heavily on documentary evidence; without it, your submissions lack credibility and you may receive an unfavourable determination.

Financial Risks

Omission leads to payment delays as respondents seek clarification. They may also apply set-offs or deductions against unproven amounts, impacting your cash flow and potentially leading to extra costs to resolve the dispute.

6. Examples

7. Frequently Asked Questions