Subcontractor Didn’t Pay You: Debt Recovery Options in the Construction Industry

You finished the job. The subcontractor who engaged you has moved on. Your invoice sits unpaid. This scenario plays out across Australian building sites every week, and construction law provides specific mechanisms to deal with it.

When a subcontractor won’t pay in Australia, you have more options than most creditors. Security of payment legislation exists in every state and territory to keep money flowing through construction supply chains.

Why Construction Payment Disputes Are Different

Construction operates on long payment chains. The head contractor gets paid by the developer. The subcontractor gets paid by the head contractor. You get paid by the subcontractor. When one link breaks, everyone downstream suffers.

Australian parliaments recognised this problem and passed security of payment laws in every jurisdiction. These laws give construction industry participants fast-track rights to serve payment claims with statutory force, demand adjudication within weeks, and suspend work if payment doesn’t arrive.

The legislation varies by state but follows similar principles. If you performed construction work or supplied related goods or services under a construction contract, you likely have security of payment rights even if your contract says nothing about them.

Security of Payment Claims: Your First Move

Before sending any letter of demand, check whether you can serve a payment claim under your state’s security of payment legislation. Every state and territory has enacted security of payment laws specifically for the construction industry.

A payment claim is not just an invoice. It is a statutory notice that triggers strict timeframes. The recipient must respond with a payment schedule within the legislated period (typically 10-15 business days depending on your state) or lose the right to dispute the claim.

What Makes a Valid Payment Claim

Your payment claim must:

• Be in writing
• Identify the construction work or related goods and services
• State the amount claimed
• Request payment of that amount
• Indicate it is made under the security of payment legislation
• Be served in accordance with your contract’s notice provisions

Many contractors serve payment claims without realising it by including the right wording on their invoices. If you’ve already invoiced and the payment period has passed, you may need to serve a fresh payment claim to access the statutory regime.

What Happens After You Serve It

Once served, the clock starts. The paying party must either pay the claimed amount in full or serve a payment schedule stating what they will pay and why they’re paying less.

If they do neither within the response period, they cannot later dispute the amount. You can immediately apply for adjudication or pursue the debt as a judgment debt.

If they serve a payment schedule offering less than claimed, you can apply for adjudication. An independent adjudicator will review the claim and schedule, make a determination (typically within 10-15 business days), and issue a binding decision. The losing party must pay within days.

Adjudication is not cheap — application fees and adjudicator costs can run to several thousand dollars — but it’s faster than court and the determination is enforceable as a judgment.

Letters of Demand: The Traditional Approach

If your debt falls outside security of payment legislation (perhaps the work wasn’t construction work as defined, or you’ve missed the claim window), a letter of demand remains effective.

A properly drafted demand letter:

• Identifies the parties and the contract
• Sets out the work performed and amount owing
• Specifies the legal basis for the claim
• Demands payment by a fixed date (typically 7-14 days)
• States the consequences of non-payment

Construction disputes often involve multiple invoices, variations, and running accounts. Your letter must clearly reconcile what was claimed, what was paid, and what remains outstanding. Attach tax invoices, signed variation orders, and any written acknowledgment of the debt.

When to Send a Final Demand

If your first letter goes unanswered, a final demand escalates the matter. It should reference the previous demand, shorten the payment deadline to 3-7 days, and explicitly state you will commence legal proceedings on a specific date.

Many subcontractors pay at this stage rather than face tribunal or court proceedings. The key is demonstrating you’re serious and prepared to follow through.

Tribunal Applications: Small Claims for Big Impact

If the debt is under your state’s small claims tribunal limit (typically $10,000-$25,000 depending on jurisdiction), tribunal proceedings offer a cost-effective enforcement option.

Tribunal proceedings are designed for self-represented parties. You don’t need a lawyer, though you can engage one if the amount justifies it. The process typically involves filing an application with supporting documents, serving the application on the respondent, attending a directions hearing or conciliation conference, presenting your case at a final hearing, and receiving a binding order.

Most tribunals encourage settlement. Many disputes resolve at conciliation without reaching a final hearing. If you do proceed to hearing, bring every piece of evidence: contracts, quotes, invoices, emails, photos of completed work, payment records, and any correspondence about the debt.

Statutory Demands: The Nuclear Option

If the subcontractor is a registered company and owes you at least $4,000, a statutory demand under the Corporations Act is the most aggressive debt recovery tool available.

A statutory demand gives the company 21 days to pay the debt in full, secure or compound the debt to your reasonable satisfaction, or apply to set aside the demand.

If they do none of these, the company is presumed insolvent. You can then apply to wind up the company. Most companies pay rather than face insolvency proceedings.

Critical requirements:

• The debt must be genuinely undisputed (if there’s a real dispute about work quality or contract terms, don’t use this tool)
• The amount must be at least $4,000
• You must serve the demand correctly at the registered office or principal place of business
• You must file a supporting affidavit verifying the debt

Statutory demands are powerful but risky. If the company successfully applies to set aside the demand, you may be ordered to pay their legal costs. Use this tool only when the debt is clear, documented, and undisputed.

Protecting Yourself on the Next Job

Once you’ve recovered this debt, take steps to avoid the same problem:

Include security of payment clause in contracts — explicitly state that invoices constitute payment claims under the relevant legislation

Require progress payments — don’t wait until job completion to invoice for large amounts

Get written variations — verbal approvals for extra work are unenforceable nightmares

Document everything — photos, emails, delivery dockets, timesheets, site instructions

Check company status — search ASIC before accepting work from a new subcontractor to ensure they’re solvent and trading

Consider retention terms — negotiate retention amounts and release dates upfront

How ClaimDone Helps Construction Creditors

ClaimDone prepares debt recovery documents for tradies, builders, and suppliers across Australia. Upload your invoices, contract, and correspondence. Our Proprietary AI Engine reads the evidence and generates the appropriate document citing the relevant construction and contract law.

For unpaid construction work:

• Letter of demand — drafted and sent automatically for $79
• Final demand — escalated follow-up when the first letter fails
• Tribunal application — prepared for filing in your state’s tribunal
• Statutory demand — prepared with supporting affidavit for company debtors

Every document is generated in 60 minutes, formatted for your jurisdiction, and ready to serve. No subscription, no hourly billing, no waiting weeks for a lawyer.

When to Engage a Construction Lawyer

ClaimDone handles straightforward debt recovery, but some construction disputes need specialist legal advice:

• Disputed defects or incomplete work
• Complex adjudication applications under security of payment laws
• Defence of adjudication determinations
• Head contractor insolvency affecting multiple subcontractors
• Building warranty claims or defects liability periods
• Disputes over $100,000 or involving multiple parties

For these matters, consult a construction lawyer who understands security of payment legislation and industry contracts.

Start Your Debt Recovery

The longer you wait, the harder recovery becomes. Subcontractors move between jobs, companies get wound up, and evidence disappears.

ClaimDone prepares your letter of demand in 60 minutes. Upload your evidence, answer a few questions, and we’ll draft a demand letter citing the Australian Consumer Law and contract law. We’ll send it automatically to the subcontractor, giving them 14 days to pay.

If they don’t respond, we’ll prepare your tribunal application or statutory demand. Flat fee, no subscription, Australia-wide.

Frequently Asked Questions

Can I use security of payment laws if I don't have a written contract?

Yes. Security of payment legislation typically applies to construction contracts whether written, oral, or implied. You’ll need to prove the contract existed (quotes, emails, text messages, bank transfers) and that you performed construction work under it. A written contract makes enforcement easier, but it’s not required.

What if the subcontractor claims the work was defective?

If there’s a genuine dispute about work quality, security of payment adjudication will still proceed, but the adjudicator will consider the defects claim. For statutory demands, a genuine dispute about the debt means the demand can be set aside. If defects are alleged, get written evidence that the work was accepted or that any defects were minor and don’t justify non-payment.

How long do I have to serve a payment claim after finishing the work?

Time limits vary by state. In some jurisdictions, you typically have 12 months from when the work was last performed. In others, there’s no strict time limit but claims must be made within a reasonable time. Check your state’s security of payment legislation or serve the claim as soon as possible after the payment due date passes.

Can I stop work if the subcontractor doesn't pay?

In most cases, yes, if you’ve served a valid payment claim and not received payment or a payment schedule. Most security of payment laws give you the right to suspend work until payment is made. You must give written notice of suspension and cannot suspend if the non-payment is due to a genuine dispute. Suspending work without following the correct process can put you in breach of contract.

What happens if I win adjudication but the subcontractor still won't pay?

An adjudication determination can typically be filed as a judgment in your state’s court or tribunal and enforced like any court judgment. You can then use enforcement methods including garnishee orders, writs of execution, or bankruptcy and insolvency proceedings. The determination is also admissible as evidence in any later court proceedings about the same payment dispute.