Adjudication vs Court: Which Is Faster for Unpaid Contractor Invoices in Australia?

You’re owed money. Your head contractor or builder is ghosting your invoices. Your first instinct is probably “I’ll take them to court.” But before you ring a lawyer, you need to know about adjudication—a faster, cheaper path that exists specifically for construction disputes in Australia.

This guide compares adjudication and court action for unpaid contractor invoices, covering timelines, costs, evidence, and when each makes sense.

What’s the difference between adjudication and court?

Adjudication is a fast-tracked dispute resolution process built into Australia’s Security of Payment legislation. A neutral third party (the adjudicator) reviews your claim and the builder’s response, then makes a binding determination within tight statutory timeframes.

Court is traditional litigation through the District or Supreme Court. A judge hears evidence from both sides and makes a final judgment. It’s slower, more formal, and more expensive.

The critical difference: adjudication is designed to get you paid quickly while disputes are resolved later. Court resolves the dispute first, then enforces payment.

How long does adjudication take compared to court?

Adjudication is measured in weeks. Court is measured in months or years.

Here’s the adjudication timeline under most state Security of Payment Acts:

1. You lodge a payment claim (payment claim must be valid and contain required information)
2. The respondent has 10 business days to serve a payment schedule or defend (under NSW Act section 14; similar in other states)
3. If they don’t respond, you can apply for adjudication immediately
4. If they do respond, you have a further period to apply for adjudication (typically 5–10 business days after their response)
5. The adjudicator then has 10–21 calendar days to issue a determination (varies by state)

Total time: 4–8 weeks in most cases.

Court, by contrast, involves:

• Pre-litigation negotiations (weeks to months)
• Filing and serving court documents (weeks)
• Discovery (exchange of documents—often months)
• Directions hearings and interlocutory applications (months)
• Trial or final judgment (6–18 months out, sometimes longer)

Total time: 12–36+ months.

How much does adjudication cost versus court?

Adjudication is significantly cheaper upfront. You’ll pay an adjudication fee (typically AUD $600–$2,500 depending on the claim value and your state), plus any legal advice you seek. Many tradies handle adjudication without a lawyer.

Court is expensive. Legal fees alone can run AUD $5,000–$50,000+, depending on complexity and whether the case goes to trial. Court filing fees are also non-trivial.

However, you can file a payment claim online for a flat AUD $79 through PayClaim, which is the essential first step before adjudication can begin. This gets you through the first gate cheaply.

Cost Item	Adjudication	Court
Payment claim preparation	AUD $0–$200 (DIY or PayClaim $79)	Not required; starts later
Adjudicator/referee fee	AUD $600–$2,500	N/A
Legal advice (optional)	AUD $0–$2,000	AUD $5,000–$50,000+
Court filing/hearing fees	N/A	AUD $500–$5,000+
Total (typical small claim)	AUD $600–$3,000	AUD $10,000–$50,000+

What evidence do you need for adjudication versus court?

Adjudication requires solid evidence but not perfection. You need to show: (1) a valid payment claim under your state’s Security of Payment Act, (2) that payment was due, and (3) how much is owing. Common evidence includes invoices, contracts, variation orders, timesheets, photographs, and email correspondence.

The adjudicator doesn’t need to hear oral evidence in most cases—they decide based on written submissions and documents. The standard is: on the balance of probabilities, is your claim valid?

Court requires more rigorous evidence. Both sides exchange documents (discovery), cross-examine witnesses, and present expert evidence if needed. The threshold is also higher—the judge must be satisfied to a civil standard, but often requires stronger proof than an adjudicator would.

For a simple unpaid invoice claim, adjudication’s evidence bar is lower and faster to meet.

Is an adjudication determination final, or can it be challenged?

This is crucial. An adjudication determination is immediately enforceable, but it is not final in the sense that the underlying dispute is resolved.

Under all state Security of Payment Acts, the respondent can challenge an adjudication determination in court on narrow grounds—usually only if the adjudicator lacked jurisdiction, breached natural justice, or made a manifest error of law. They cannot re-argue the merits of your claim.

In practice, if you win adjudication, you get paid within weeks. If the builder disputes the determination, that becomes a separate court proceeding—but you have cash in hand while it’s fought out.

Court judgment, by contrast, is final (subject to appeal, which is expensive and rare). But you don’t get paid until the judgment is given and any appeal period closes.

When should you choose adjudication?

Choose adjudication if:

• You need money quickly (within weeks, not months)
• Your claim is straightforward—invoice issued, work done, payment overdue
• The builder is disputing liability or quantum, but you have solid documentary evidence
• You can’t afford lengthy court proceedings
• You want to maintain a working relationship (adjudication is faster and less confrontational than court)

When should you choose court?

Choose court if:

• Adjudication has already failed, and the builder is challenging the determination
• Your dispute involves complex contractual interpretation, defects, or counterclaims that adjudication cannot fairly resolve
• You need a final, unchallengeable judgment for finality or insurance purposes
• The builder’s challenges to your claim go to jurisdiction or natural justice, not just merits
• You can afford months of legal proceedings and litigation risk

What are the state-by-state differences in adjudication timeframes?

All Australian states and territories have Security of Payment legislation, but timeframes vary slightly. Here’s the snapshot:

State/Territory	Act	Payment Schedule Deadline	Adjudication Decision Deadline
NSW	Building and Construction Industry Security of Payment Act 1999	10 business days (s.14)	21 calendar days (s.22)
Victoria	Building and Construction Industry Security of Payment Act 2002	10 business days (s.14)	10 business days (s.19)
Queensland	Building Industry Fairness (Security of Payment) Act 2017	10 business days (s.17)	14 calendar days (s.23)
Western Australia	Construction Contracts Act 2004	10 business days (s.11)	14 calendar days (s.15)
South Australia	Building and Construction Industry Security of Payment Act 2009	10 business days (s.14)	14 calendar days (s.19)
Tasmania	Building and Construction Industry Security of Payment Act 2009	10 business days (s.14)	14 calendar days (s.19)
Northern Territory	Construction Contracts (Security of Payments) Act 2004	10 business days (s.11)	14 calendar days (s.15)
Australian Capital Territory	Building and Construction Industry (Security of Payment) Act 2009	10 business days (s.14)	14 calendar days (s.19)

Victoria’s 10 business day adjudication deadline is the tightest; NSW allows 21 calendar days. Most other states fall in between. These differences are marginal—adjudication is fast everywhere compared to court.

Can you do both adjudication and court at the same time?

Technically, yes. You can lodge a payment claim, pursue adjudication, and file a court claim simultaneously. However, this is rarely practical because:

If adjudication succeeds, you’ve been paid and the need for court diminishes. If adjudication fails and you challenge the determination in court, a second separate court action becomes redundant.

Most tradies follow adjudication first, reserve court action for if the builder challenges the adjudication determination, or if they need finality beyond what adjudication offers.

What happens if the builder ignores an adjudication determination?

If you win adjudication and the builder doesn’t pay, you can enforce the determination in court without re-litigating the merits. This is much faster than a full court case.

Enforcement typically involves filing the determination as a judgment and pursuing debt recovery—garnishing bank accounts, registering caveat on property, or engaging a debt collector. The builder cannot simply ignore an adjudication determination; it has the force of law.

The practical choice: adjudication first, court if needed

For most tradies chasing unpaid invoices, adjudication is the smarter first move. It’s fast, cheap, and gives you a binding decision and payment obligation within weeks. If the builder challenges that determination, court becomes the backstop—but by then you know exactly what’s in dispute.

Court alone, without adjudication, is slower and more expensive from day one. It makes sense only if your dispute is too complex for adjudication (e.g., major defects or counterclaims) or if you need absolute finality.

To get started with adjudication, you’ll need a valid payment claim. The first step is cheap and quick—prepare your payment claim online for AUD $79, ensure it meets your state’s requirements, serve it properly, and wait for the builder’s response.

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Frequently Asked Questions

Q: Can I skip the payment claim and go straight to court?

No. Under all state Security of Payment Acts, a valid payment claim is the first legal step. You must serve a payment claim (with proper notice period) before adjudication can be initiated. Court also assumes you’ve exhausted statutory remedies first. A payment claim is a prerequisite, not optional.

Q: How do I know if my payment claim is valid?

Your payment claim must comply with your state’s Act—it must be in writing, identify the work or goods, state the amount claimed, include GST, and be served on the right person within the statutory time. Each state’s Act specifies exact requirements (e.g., NSW Building and Construction Industry Security of Payment Act 1999, section 13). If it doesn’t meet these, the builder can reject it, and adjudication won’t proceed. Using a service like PayClaim ensures compliance with your state’s rules.

Q: If I win adjudication, am I guaranteed payment?

Adjudication gives you a binding determination and an immediate payment obligation. However, the builder must still pay voluntarily or be enforced against. If they don’t pay, you can pursue enforcement through court—registering the determination as a judgment and using debt collection tools. Most builders pay once an adjudication is issued; if they don’t, enforcement is your next step, which is faster than a full court case.

Q: Can the builder appeal an adjudication determination?

Not a typical appeal. The builder can challenge the determination in court only on narrow grounds—jurisdiction, natural justice, or manifest error of law—not on the merits. They cannot ask a judge to re-hear your claim. This is why adjudication is so powerful: the decision sticks unless the process itself was fundamentally flawed.

Q: What’s the difference between a payment claim and an invoice?

An invoice is your usual bill for work done. A payment claim under the Security of Payment Act is a formal legal document that triggers statutory rights and deadlines. Not all invoices qualify as payment claims; they must meet specific legislative requirements (section 13 of most state Acts). A payment claim is more formal and carries legal weight that an ordinary invoice does not.