We explain how NSW builders and subcontractors can prepare supported payment claims, respond to payment schedules and connect variations, delay records and adjudication.
Here is the short version on construction payment claims NSW builders and subcontractors can rely on: start with the contract, identify the work, state the amount claimed and serve a compliant claim backed by good records. Under the Building and Construction Industry Security of Payment Act 1999 (NSW), the recipient can respond with a payment schedule, and eligible payment disputes can proceed to adjudication.
The security of payment NSW framework supports cash flow through an interim payment process while preserving the parties’ final contractual rights. We explain how to organise the commercial evidence below; speak to your lawyer about your own entitlement, service requirements and deadlines.
Who can use the NSW payment claim process?
The scheme covers eligible construction work and related goods or services, including claims by builders, subcontractors, suppliers and consultants. A contract can be oral, written or a mixture, although proving an oral agreement can be harder.
Owner-occupier building work is not automatically excluded. The scheme was extended to owner-occupier contracts entered into from 1 March 2021, while earlier contracts require separate checking; contracts predating the October 2019 reforms also need care.
Eligibility still matters: employment arrangements and work outside NSW are outside the scheme’s relevant coverage, and a corporation in liquidation cannot use the payment claim process. Residential licensing and insurance non-compliance can also affect statutory entitlement, so raise those issues with your lawyer before relying on the Act.
We recommend checking the contracting entities as carefully as the project address. The trading name on a site sign may differ from the legal party that engaged you and owes payment.
Construction payment claims NSW: how do we prepare claims that stand up?
We build a claim around four connected questions: entitlement, notice, evidence and quantum. Good progress claims in construction let the other side see, item by item, why each amount is owed and which record supports it.
- Entitlement: identify the scope, instruction or contractual basis for payment, and flag disputed interpretation for your lawyer.
- Notice: check the contract’s notification requirements, including who receives notices and what information they require.
- Evidence: connect drawings, site diaries, delivery dockets, correspondence and dated photographs to each item.
- Quantum: show how measurements, rates and permitted adjustments produce the amount claimed.
Keep the valuation consistent from month to month. Show the cumulative value, previous payments, retention and other applicable adjustments clearly, so the recipient can reconcile this claim with the previous one.
Explain disputed items separately instead of burying them in a total. Where completion is assessed by percentage, record the quantities or milestones behind that assessment rather than relying on a general impression from site.
A tidy spreadsheet cannot settle a disputed contractual right, but it can make the disagreement precise. Our guide to construction claims management develops this approach across progress claims, variations and extensions of time.
What must a payment claim include, and when can it be served?
A statutory payment claim must identify the relevant work or related goods and services, state the amount claimed, and state that it is made under the Act. A useful endorsement is: “This is a payment claim made under the Building and Construction Industry Security of Payment Act 1999 (NSW).”
Under the post-2019 rules, claims can generally be served from the last day of the month in which work first occurred and each subsequent month, or an earlier contractual date. Monthly frequency rules and the contract should be checked before sending another claim.
The claim must be served within the contractual period or within 12 months after the relevant work was last carried out, or goods or services last supplied, whichever is later. Do not assume the date of your latest invoice restarts that period.
Head contractors claiming against principals must also address the supporting statement requirement, using the appropriate approved form. Check the declaration against actual subcontractor payment records before signing it.
Service is part of the claim, not an administrative afterthought. Check the permitted method and recipient, retain the exact issued documents and preserve proof of service; an informal upload or email should not simply be assumed sufficient.
How do payment schedules and payment due dates differ?
A payment schedule identifies the claim, states the proposed payment and explains any reduction or withholding. The response period is the earlier of the contractual period and 10 business days after service of the claim.
That response deadline is separate from the payment due date. Outside the residential exceptions, the usual statutory limits are 15 business days for principal-to-head-contractor payments and 20 business days for payments to subcontractors, with earlier contractual dates applying where specified.
For owner-occupier contracts and connected residential subcontracts, check the applicable category and contractual payment terms. A 10-business-day default applies where the relevant contract makes no express provision; do not apply the commercial limits indiscriminately to residential work.
These time limits are counted in business days under the Act as it stands today. Parliament passed changes in 2026 (the Fair Trading and Building Legislation Amendment Act 2026) that will switch to “working days”, which also leave out 27 to 31 December, from a date still to be set. Check which counting rule applies on the day, and ask your lawyer if a deadline falls near the holidays.
If you receive a claim as a builder, record receipt immediately and prepare any schedule promptly. Explain disputed quantities, defects or deductions with evidence, because reasons omitted from the schedule cannot simply be introduced later in an adjudication response.
What happens if payment is disputed or missing?
Adjudication is a statutory process in which an independent adjudicator determines the payment due on the claim. The application goes to an authorised nominating authority, and the applicable route depends on what the respondent has done.
Published NSW guidance identifies three key routes:
- A schedule proposes less than claimed: apply within 10 business days after receiving the schedule.
- A scheduled amount remains unpaid: apply within 20 business days after the payment due date.
- No timely schedule and the claimed amount remains unpaid: serve a notice of intention within 20 business days immediately following the due date, allow five business days for a schedule, then apply within 10 business days after that period ends.
The third route has an additional notice step; silence does not let you skip it. Where a valid claim receives no timely schedule, the respondent becomes liable for the claimed amount on the due date, and court recovery may also be available if payment is not made.
We organise the valuation, chronology and supporting documents so each disputed item can be followed. Speak to your lawyer promptly about the correct route and the application requirements. Suspending work has its own notice rules under the Act, so get advice before you stop work.
Keep commercial discussions moving, but do not assume negotiations pause statutory deadlines. Our subcontractor payment dispute guide explains how quantity surveying evidence supports builders and subcontractors when payment disagreements escalate.
How do variations, extensions of time and delay costs connect?
A variation concerns a change to the agreed scope, while an extension of time concerns the completion date. Delay costs concern the financial consequences of delay, and each requires its own contractual and evidentiary assessment.
For a variation, compare the original scope with the instruction and revised work. Record who directed it, the notice given, the quantities added or omitted, and the pricing method relied on; an instruction to proceed does not necessarily settle the price.
For time, maintain the construction programme and record how the event affected the work leading to completion. Site diaries, access records and programme updates should explain what changed, when it changed and what was done to reduce the impact.
An extension of time does not automatically establish an entitlement to delay costs. Separate the time assessment from the cost calculation, identify actual resources and periods affected, and avoid claiming the same supervision or plant cost through both a variation and a delay item.
Before including disputed delay amounts in a statutory payment claim, speak to your lawyer about their contractual basis and whether they belong in that claim. We can measure the cost consequences once the basis for assessment is clear.
What does a supported claim look like in practice?
Consider an illustrative subcontractor instructed to add a partition and relocate a doorway during a fit-out. The subcontractor records the instruction, checks the notice requirements and compares the revised drawing with the original scope.
We measure the added partition and doorway work, deduct omitted original work, then apply the relevant rates and permitted adjustments. The calculation is: added work plus permitted extras, less omitted work, producing the net variation value; previous payments and applicable retention are then reconciled in the overall claim.
The revised doorway also affects access to a following trade. We organise the programme evidence separately and identify any supported additional costs, without treating the variation instruction as automatic approval of extra time or money.
If the payment schedule accepts the partition but disputes the relocation, the difference is traceable to a specific item. The subcontractor can address that disagreement while checking the applicable adjudication deadline, without rebuilding the whole claim from scattered emails.
When should a quantity surveyor become involved?
Bring us in when quantities, rates, completion percentages or variation values are becoming difficult to reconcile. Early involvement helps establish a consistent claim structure and identify missing records while the people involved still remember the work.
On construction payment claims NSW projects, our role is to make the measurement and valuation evidence clear. Through our claims and variations support, we help organise the commercial assessment, with reports prepared by a Certified Quantity Surveyor.
When the disagreement has become a formal dispute, our construction dispute quantity surveyor guide explains how independent cost evidence can assist. Your lawyer advises on legal entitlement, procedure and strategy; we support the quantities, pricing and records behind the position being assessed.
Frequently asked questions
Can an ordinary invoice be a payment claim in NSW?
It can, provided it meets the applicable statutory requirements, including identifying the work, stating the amount and carrying the required endorsement. Timing and service matter too, so the invoice heading alone does not determine compliance.
Can I claim payment without a written construction contract?
The Act can apply to oral or partly oral construction contracts. Keep quotations, acceptance emails, instructions and payment records to help establish the agreement, and speak to your lawyer about eligibility and proof.
Does adjudication finally resolve the whole construction dispute?
Adjudication determines an interim payment outcome under the Act, while final contractual rights can still be determined separately. If an adjudicated amount is not paid, speak to your lawyer about enforcement rather than treating the determination as automatic receipt of funds.
