Progress Payment Disputes on Residential Builds in Australia

What it is

A progress payment dispute is a fight over money owed at a stage of a residential build. The builder claims a stage is reached. The owner or head contractor says it is not, or that the work is defective, or that the claim is overvalued. Money stops. Site stops with it.

In Australia, two legal frameworks sit over the top of this. The first is state residential building law, which sets the rules for owner-builder contracts. The second is the Security of Payment regime (SoP), which applies between builders and subcontractors but does not apply to owner-builder residential contracts in most states.

Sorting the dispute starts with knowing which framework you are in.

How disputes start

Most progress payment fights fall into a short list of causes.

Stage not actually reached

The contract describes a stage in words. The builder says it is done. The owner walks the site and says the slab is not poured to plan, or frames are not braced, or lockup is missing two windows. Whether the stage is reached is a question of fact tied back to the contract description.

Variations not signed

The claim includes variation work the owner never approved in writing. Most state residential acts require variations to be in writing and signed before the work starts. An unsigned variation is hard to recover.

Defective work

The owner refuses to pay because part of the previous stage is defective. The builder argues defects are dealt with under the defects liability period, not by withholding progress payments. The contract usually decides this. Some defects are serious enough to justify a set-off.

Overvaluation

The claim is for a fixed stage amount but the work done is less than the stage. Common where stages are loosely worded.

Cash flow on the builder's side

The builder is short and pushes a claim early. The owner senses it and pushes back.

How Security of Payment applies

SoP gives a statutory right to a progress payment for construction work. It runs in parallel with the contract. Each state has its own Act with its own timing. NSW runs under the Building and Construction Industry Security of Payment Act 1999. Queensland runs under the Building Industry Fairness (Security of Payment) Act 2017. Victoria, WA, SA, Tasmania, the ACT and NT each have their own.

The critical point for residential work: SoP does not apply where the contract is between a builder and a resident owner-occupier in NSW, Victoria, Queensland and most other states. That carve-out is in section 7 of the NSW Act and the equivalent sections elsewhere. So an owner-builder progress dispute is fought on the contract and under residential building law, not under SoP.

SoP does apply where the builder is the head contractor and the dispute is with a subcontractor or supplier. That is where adjudication is the fast-track remedy. A payment claim is served. A payment schedule is due back within a short window. If the schedule is missing or short, the claimant can apply for adjudication.

The tribunal pathway by state

Residential disputes that fall outside SoP go to the state consumer tribunal or court.

NSW

The NSW Civil and Administrative Tribunal (NCAT) hears most home building disputes under the Home Building Act 1989. Money limit at the Consumer and Commercial Division is generally up to $500,000. Above that the dispute goes to the District Court or Supreme Court depending on quantum.

Victoria

Domestic building disputes first go through Domestic Building Dispute Resolution Victoria (DBDRV). If conciliation fails, the Victorian Civil and Administrative Tribunal (VCAT) hears the case under the Domestic Building Contracts Act 1995.

Queensland

QBCC runs an early dispute resolution process. Unresolved disputes go to QCAT for amounts within its limit, or to the relevant court for larger claims. Building Industry Fairness Act adjudication is still open for builder-subcontractor disputes.

WA, SA, Tasmania, ACT, NT

Each has its own consumer tribunal or building commission pathway. WA uses the State Administrative Tribunal. SA uses SACAT. Tasmania uses CBOS conciliation then the Magistrates Court. ACT uses ACAT. NT uses NTCAT.

How to protect the claim

A few habits keep a progress claim defensible.

Tie stages to clear physical milestones

Write the stage description so a third party can walk the site and tick it off. Avoid words like "substantially complete".

Keep the variation paperwork live

Every variation gets a signed instrument before the work starts. Photos before and after. A line item in the next claim.

Photograph the work each stage

Date stamped. Wide angle and close detail. Attach the relevant photos to the claim.

Issue a clean payment claim

Include the reference date, the amount claimed, the period covered and the contract reference. For builder-to-subbie work, mark the claim as made under the relevant SoP Act so timing rights are preserved.

Respond on time when receiving a claim

Under SoP, missing the payment schedule deadline can lock you out of defences at adjudication. Diary the dates.

When to escalate

Conciliation works for cash flow disputes where both parties want to keep going. It does not work where the builder has walked off, the owner has lost trust, or the amount in dispute is large enough that legal cost is justified.

A formal demand letter sets the timing. If unpaid by the deadline, the next step is the tribunal application or the SoP adjudication application. SoP is fast but only available for construction contracts that are not owner-occupier residential.