Supplier payment risk and the PPSR.
The principal contractor funds the supply chain.
In residential construction, the homeowner contracts with the principal builder. The principal builder subcontracts work to trades — framers, bricklayers, electricians, plumbers, concreters — and purchases materials from suppliers. The homeowner's progress payments fund this entire supply chain through the principal.
When a builder does not pay subcontractors or suppliers on time — or at all — those parties can take actions that directly affect the homeowner's project. A subcontractor owed money can stop work. A supplier owed money can repossess materials that have not yet been fixed to the land. An unpaid subcontractor can lodge a caveat on the property title in some jurisdictions.
Non-payment of the supply chain is often an early indicator of a builder in financial distress — occurring before formal insolvency, before defaults appear on the credit file and well before any public notice is issued. Subcontractors and suppliers who have experienced payment problems may register their security interests on the PPSR.
Subcontractor stops work
A trade owed money has a right to stop work under security of payment legislation after issuing a payment claim that has not been paid.
Supplier withholds materials
Materials not yet delivered can be withheld. Materials delivered but not yet fixed to the land can be subject to a supplier's retention of title claim.
Caveat on title
An unpaid party with a contractual or statutory entitlement may lodge a caveat on the property title, affecting the homeowner's ability to sell or refinance.
Defects from insufficient labour
Where subcontractors leave mid-project, the builder may engage less experienced labour or rush remaining works to manage cash flow, increasing the risk of defective work.
PPSR is the security register.
The Personal Property Securities Register (PPSR) is the national register maintained under the Personal Property Securities Act 2009 (Cth). Secured parties register their interest in personal property — which includes plant, equipment, vehicles and unfixed materials — to protect their position if the debtor (the builder) becomes insolvent.
For homeowners, PPSR registrations against a builder are relevant in two ways. First, they indicate that creditors — typically suppliers and finance providers — hold security over the builder's assets. If the builder becomes insolvent, those creditors can seize and sell the secured assets ahead of unsecured creditors, which includes the homeowner. Second, a large volume of PPSR registrations against a builder, particularly from suppliers, may indicate that those suppliers are not being paid and are protecting their position.
PPSR registrations are public and searchable by ABN or company name at ppsr.gov.au.
Run a builder reportSecurity of payment legislation.
Each Australian state and territory has security of payment legislation that gives subcontractors and suppliers a statutory right to make a payment claim and, if unpaid, obtain a rapid adjudication from an authorised nominating authority (ANA). An adjudicated amount becomes a judgment debt.
In NSW, this is the Building and Construction Industry Security of Payment Act 1999. In VIC, the Building and Construction Industry Security of Payment Act 2002. QLD has the Building Industry Fairness (Security of Payment) Act 2017, which also introduced Project Bank Accounts for larger contracts to protect subcontractor entitlements.
Where a builder has multiple adjudication decisions or judgment debts arising from security of payment claims, that pattern is visible on the commercial credit file and court record — and TrustSignal includes it in the report.
What to look for.
Multiple PPSR registrations from trade suppliers (not just plant financiers)
Court writs or judgments from subcontractors or building suppliers
A pattern of adjudication determinations under security of payment legislation
Adverse entries on the commercial credit file from construction-related creditors
News reports or industry commentary about subcontractor non-payment (not part of TrustSignal's data but relevant context)
TrustSignal sources commercial credit and PPSR data from Equifax and the PPSR register. Not all subcontractor non-payment events reach the formal record — informal disputes, negotiated settlements and industry relationships mean many payment problems are not publicly documented.