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[2026] QCA 63
respondent. Appeal dismissed, with costs.
The adjudicator could not treat the value of façade work that York wanted to withhold as if it were the estimated cost of repairing defective work. The BIF Act required the adjudicator to decide whether the work was defective and, if so, estimate the cost of fixing it. The adjudicator found only that the façade might need replacement and had no evidence of actual rectification costs. The Court of Appeal therefore upheld the finding that the relevant part of the adjudication decision was affected by jurisdictional error and dismissed York’s appeal.
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2,661 words · generated 08/10/2026
York Property Holdings Pty Ltd engaged Tomkins Commercial & Industrial Builders Pty Ltd as head contractor for an apartment building on the Gold Coast in August 2021. A later progress payment dispute included a disagreement about the building façade, comprising the curtain wall, aluminium doors and windows. The central appeal issue was whether the adjudicator lawfully treated $4,764,178.27 as the estimated cost of rectifying the façade.
3 cited instruments linked from this judgment.
Tomkins’ payment claim sought just over $22.4 million for work carried out to the end of May 2024. York’s payment schedule disputed parts of the claim and produced a negative figure of just over $1.2 million. The adjudicator ultimately determined an amount payable of $920,892. The appeal concerned one component of the adjudication: the deduction for the façade.
Tomkins claimed $7,510,366 for façade work on the basis it was 46% complete, later reducing the amount in its adjudication application to account for unfixed materials. York said the work was only 29% complete and assessed the value of completed work at $4,764,178.27, an amount it said had already been claimed. York also argued that Tomkins was required to provide a form 15 certification for the façade system. In York’s view, without that certificate it could not determine whether the façade complied with the contract, and the whole façade might be defective.
The adjudicator resolved the completion dispute in Tomkins’ favour. The adjudicator found that York had not substantiated its 29% assessment and accepted Tomkins’ 46% assessment, valuing completed façade work at $6,802,706. But the adjudicator also found that Tomkins was required to provide a form 15. Because York’s concerns remained unanswered, the adjudicator accepted that the façade might require removal and replacement. The adjudicator then used $4,764,178.27 as the “estimated cost of rectifying” the façade and allowed a deduction in that amount.
The primary judge set aside that part of the adjudication decision for jurisdictional error. York appealed. The Queensland Court of Appeal, comprising Bowskill CJ, Brown JA and Bradley JA, dismissed the appeal with costs. Brown JA and Bradley JA agreed with Bowskill CJ’s reasons.
The important distinction in the Court of Appeal’s reasoning was between an amount said to be withheld because work may not comply with the contract, and an estimate of what it would cost to rectify defective work. The Court held that the adjudicator had used the former as though it were the latter, without making the findings and assessment required by the BIF Act.
The Court began with the statutory task. Section 88(1) of the Building Industry Fairness (Security of Payment) Act 2017 (Qld) required the adjudicator to decide the amount of the progress payment, if any, payable by York to Tomkins. Section 71(b) linked the payment amount to the value of construction work carried out. Where the contract did not provide the valuation method, s 72(1)(b) required regard to specified matters, including “if any of the work is defective, the estimated cost of rectifying the defect” (para 5).
Those provisions made the condition important: the rectification-cost factor applied if work was defective. The Court read the task as requiring the adjudicator to determine first whether the relevant work “is defective”, and second, if so, the estimated cost of rectifying it (para 2). The adjudicator did not make the first finding. The adjudicator found that the façade might require removal and replacement because York’s concerns had not been addressed in the absence of a form 15. A conclusion that work may need replacement is not a finding that it is defective (paras 30–31).
The second failure concerned the amount. The adjudicator selected $4,764,178.27 as the estimated rectification cost. But that figure represented York’s assessment of the value of the façade work completed to date and the amount it sought to withhold. The Court found there was no evidence or submission about the estimated cost of actually rectifying any identified defect (paras 27, 29 and 31). York’s argument was that the whole façade might need replacement because it lacked the required certificate; the amount was not an estimate of the cost of carrying out that replacement.
The Court therefore held that the adjudicator had not performed the function conferred by s 88(1), read with ss 88(2) and 72(1). The failure breached an implied condition of the statutory conferral of decision-making authority. The consequence was jurisdictional error (para 32). The decision was not simply an arguably mistaken valuation: on the Court’s analysis, the adjudicator had not carried out the required statutory task.
The inconsistent figures reinforced that conclusion. The adjudicator accepted Tomkins’ assessment that the façade was 46% complete and valued the work at $6,802,706, but used York’s lower $4,764,178.27 figure to value the supposedly defective work. The Court agreed that this was illogical and incoherent, but stressed that illogicality alone does not establish jurisdictional error. Rather, the inconsistency drew attention to the fundamental failure to perform the required task (paras 33–34).
This distinction is important when reading the judgment. The Court did not decide that every inconsistent reason, or every mistaken estimate, invalidates an adjudication. It identified a specific failure against the requirements of ss 71, 72 and 88: no finding that the work was defective, and no estimate of actual rectification costs.
The judgment does not describe a change to the law or announce that a prior rule has been displaced. It applies established principles about the statutory function of an adjudicator to a particular valuation issue under the BIF Act. The decision explains how that statutory function operates where a respondent claims a deduction for potentially defective work.
Before the appeal, the statutory text already required the adjudicator to decide the payment amount and, where applicable, to have regard to the estimated cost of rectifying defective work. The Court referred to s 88(1), the matters an adjudicator may consider under s 88(2), and the valuation provisions in ss 71 and 72. It also noted that an adjudicator’s decision under s 88 has no appeal and is not reviewable under the Judicial Review Act 1991 (Qld), with supervisory intervention available for jurisdictional error (paras 17–19).
The Court’s contribution in this judgment is its application of those requirements to a figure that was not presented as an actual repair or replacement estimate. It emphasised that an amount described as a deduction does not become an estimate of rectification costs merely because the adjudicator labels it that way. The adjudicator must perform the statutory valuation task, including the relevant factual assessment required by s 72(1)(b)(iv).
The judgment also treats illogicality carefully. It refers to City of Ryde v AMFM Constructions Pty Ltd for the proposition that deficient or illogical reasons can be significant where they reveal that the adjudicator did not determine the amount by reference to the statutory factors (para 20). It refers to Annie Street JV Pty Ltd v MCC Pty Ltd for the proposition that jurisdictional error may arise where the reasons disclose no foundation or logical basis for a decision (para 21). In this case, however, the Court did not treat illogicality as an independent rule of invalidity. It was supporting context for the conclusion that the adjudicator had not done the statutory task (para 34).
The Court relied on the principle that failure to perform the function entrusted by statute can be jurisdictional, referring to Hossain v Minister for Immigration and Border Protection and LPDT v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (paras 2 and 19). It also referred to Acciona Agua Australia Pty Ltd v Monadelphous Engineering Pty Ltd on the general conditions of an adjudicator’s valid exercise of jurisdiction (para 18). The judgment applies those principles; it does not purport to restate the whole law of jurisdictional error.
Accordingly, the “after” position supported by the text is a practical clarification, not a demonstrated doctrinal reversal: in a BIF Act adjudication, an adjudicator addressing defective-work valuation must determine whether the work is defective and must have a basis for estimating the cost of rectification. The judgment does not establish that the statutory requirements can only be satisfied by a particular type of expert report or calculation.
At paragraph 2, Bowskill CJ identifies the required sequence: the adjudicator must determine “first, whether the contested work ‘is defective’ and second, if so, the ‘estimated cost of rectifying the defect’.” In plain English, the adjudicator must decide whether there is defective work before applying the statutory factor for fixing it. If there is, the amount used must relate to the cost of rectification.
At paragraph 30, the Court distinguishes a possible defect from a finding of defect. The adjudicator accepted that the entire façade “may” require removal and replacement. The Court said that this was not a finding that the work “is defective”. In ordinary terms, a concern that work might be defective does not itself answer the statutory question.
At paragraph 31, the Court explains the evidentiary gap. It says there was no evidence or submission about “the estimated cost of [actually] rectifying the defect”. The amount available was York’s argument that payment should be withheld because it could not establish compliance without a form 15. Put simply, the amount needed to secure compliance or reflect a disputed valuation is not necessarily the amount needed to repair or replace work.
At paragraph 32, the Court states the decisive conclusion: the adjudicator “did not perform the function conferred on him by s 88(1), read with s 88(2) and s 72(1).” This means the adjudicator did not simply make an incorrect choice between competing estimates. The Court found that the required statutory assessment had not been carried out.
At paragraph 34, the Court clarifies the role of inconsistent reasoning. The inconsistency “may not, of itself, support a conclusion of jurisdictional error”, but it brought the fundamental failure into focus. For practitioners, the passage cautions against treating illogicality as an automatic basis for judicial intervention. The question remains whether the reasoning reveals a failure to perform the statutory task.
The judgment is most directly relevant where a payment schedule or adjudication response seeks to reduce a progress payment for alleged defective work, and the adjudicator relies on s 72(1)(b)(iv) of the BIF Act. The key features in this case were that the alleged defect remained uncertain, the adjudicator did not find that the work was defective, and the amount treated as rectification costs was actually the value of work York said should be withheld.
A similar issue may arise where a party argues that missing certification or unresolved compliance concerns mean that work could require extensive removal or replacement. The judgment indicates that the adjudicator must still carry out the statutory task rather than equate a risk of future rectification with a finding of present defect. The specific significance of a certificate will depend on the contract, the statutory framework and the material put before the adjudicator; this judgment’s stated holding concerns the adjudicator’s task, not a general rule about form 15 certificates.
The decision also matters where the amount asserted as a deduction has a different stated purpose from the statutory measure. York’s material characterised the figure as the value of completed work being withheld because of non-compliance concerns. The Court found it was not an estimate of the cost of rectification. A lawyer assessing another dispute would likely want to compare the amount claimed, the explanation for it, and the evidence said to support any actual repair or replacement estimate.
The judgment does not prescribe a particular evidentiary format, identify a minimum level of detail for an estimate, or decide how an adjudicator should resolve conflicting expert estimates. Nor does it decide that all work must be physically repaired before a cost can be estimated. Those points are not resolved by the text provided. Its specific warning is that the adjudicator must make the required determination and have a basis for the relevant estimate.
The judgment was delivered on 14 April 2026. The supplied judgment contains no subsequent decisions applying, distinguishing or otherwise treating this decision. It is therefore not possible to describe later judicial treatment from the available source.
Within this judgment itself, the Court discusses several earlier authorities. Acciona Agua Australia Pty Ltd v Monadelphous Engineering Pty Ltd is cited for the general conditions of a valid exercise of an adjudicator’s jurisdiction (para 18). City of Ryde v AMFM Constructions Pty Ltd is cited on the significance of reasons that may disclose a failure to determine an adjudicated amount by reference to relevant statutory factors (para 20). Annie Street JV Pty Ltd v MCC Pty Ltd is cited for the proposition that reasons revealing no foundation or logical basis may indicate a failure to exercise jurisdiction (para 21). Hossain and LPDT are cited in relation to jurisdictional error and failure to perform the statutory function (paras 2 and 19).
The Court also considers the primary decision, Tomkins Commercial & Industrial Builders Pty Ltd v York Property Holdings Pty Ltd [2025] QSC 261. It upholds the primary judge’s conclusion that the adjudicator failed to find that the façade work was defective and failed to estimate the cost of rectification. The appeal judgment says that the primary judge’s reference to a failure to consider material under s 88(2)(d) was not necessary to the result: the fundamental error was the failure to perform the statutory task (para 36).
Any account of treatment after this appeal would require later judgments or other legal sources beyond the text supplied here. No such later treatment is claimed in this analysis.
The judgment leaves several matters open because they were not necessary to decide the appeal. First, it does not specify what evidence will ordinarily be sufficient to support an estimated rectification cost. The Court found there was no evidence or submission of such an estimate in this case, but it did not set a general evidentiary threshold or require a particular form of expert evidence.
Second, the decision does not determine how an adjudicator should address a dispute where there is evidence of defects but uncertainty about their extent, the necessary scope of works, or the cost of repair. The Court’s reasoning requires a finding that work is defective and an estimate if the statutory factor is engaged, but it does not spell out how those questions must be answered where the evidence is conflicting or incomplete.
Third, the Court did not finally decide the appeal ground concerning failure to consider the material under s 88(2)(d). It observed that the adjudicator may have considered the material but misconstrued it, and said that it was unnecessary to examine further what “fail to consider” meant in this context (para 36). The ratio therefore rests on failure to perform the statutory task, not on a definitive finding about the adjudicator’s consideration of each document or submission.
Fourth, although the Court found the reasoning inconsistent, it did not treat inconsistency alone as sufficient. It remains necessary to assess whether an apparent inconsistency, read with the decision and material, reveals a failure to perform the statutory function. The judgment’s analysis is contextual: the mismatch between the 46% valuation and the lower figure used for rectification reinforced the more basic defects in the adjudicator’s approach.
Finally, the judgment does not resolve the underlying contractual question about whether Tomkins was required to provide a form 15, beyond recording that the adjudicator found that it was required. Nor does the Court decide whether the façade was in fact defective or whether any part needed removal and replacement. The appeal concerned the validity of the adjudicator’s method and the primary judge’s jurisdictional-error ruling, not a final determination of those construction issues.
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Source: Queensland Judgments (Supreme Court Library Queensland) (www.queenslandjudgments.com.au). Converted to plain text by ZoeLaw. Not the official version.
SUPREME COURT OF QUEENSLAND
CITATION: York Property Holdings Pty Ltd v Tomkins Commercial & Industrial Builders Pty Ltd [2026] QCA 63
PARTIES: YORK PROPERTY HOLDINGS PTY LTD ATF YORK PROPERTY TRUST / ABN 94 831 587 168 / (appellant) / v / TOMKINS COMMERCIAL & INDUSTRIAL BUILDERS PTY LTD / ABN 98 061 732 778 / (first respondent) / RICHARD ATKIN (ADJUDICATOR NO. J1182971) / (second respondent) / THE ADJUDICATION REGISTRAR (QUEENSLAND BUILDING AND CONSTRUCTION COMMISSION) / (third respondent) / HWL EBSWORTH LAWYERS / ABN 37 246 549 189 / (fourth respondent)
FILE NO/S: Appeal No 4789 of 2025 / SC No 14068 of 2024
DIVISION: Court of Appeal
PROCEEDING: General Civil Appeal
ORIGINATING COURT: Supreme Court at Brisbane – [2025] QSC 261 (Crowley J)
DELIVERED ON: 14 April 2026
DELIVERED AT: Brisbane
HEARING DATE: 12 February 2026
JUDGES: Bowskill CJ, Brown JA, Bradley JA
ORDER: Appeal dismissed, with costs.
CATCHWORDS: CONTRACTS – BUILDING, ENGINEERING AND RELATED CONTRACTS, REMUNERATION, STATUTORY REGULATION OF ENTITLEMENT TO AND RECOVERY OF PROGRESS PAYMENTS – where the appellant engaged the first respondent as head contractor for the construction of an apartment building – where the first respondent made a payment claim, including a claim for payment for construction of the building’s façade – where a dispute arose in relation to design responsibility for, and quality of, the building’s façade – where the dispute was referred to an adjudicator under the Building Industry Fairness (Security of Payment) Act 2017 (Qld) – where the adjudicator accepted the appellant’s argument as to design responsibility and found that, in the absence of a form 15 certifying the façade had been constructed in accordance with the design, the entire façade may require removal and replacement – where the adjudicator valued the estimated cost of rectifying the façade at $4,764,178, which was the value of the façade construction work undertaken to date, on the appellant’s assessment – where the primary judge found this part of the adjudicator’s decision void for jurisdictional error, because the adjudicator failed to make a finding whether the work was in fact defective and purported to estimate the cost of rectifying the potentially defective work in circumstances where there was no evidence before him of the estimated cost, only the asserted value of the “defect” relied upon by the appellant, namely, the value of the work carried out to date – where the primary judge also found that the adjudicator’s decision was illogical and incoherent, because in another part of the decision the adjudicator had rejected the appellant’s assessment of the percentage of work completed to date – whether the primary judge’s decision was correct / Building Industry Fairness (Security of Payment) Act 2017 (Qld) / Judicial Review Act 1991 (Qld) / Acciona Agua Australia Pty Ltd v Monadelphous Engineering Pty Ltd (2020) 4 QR 410; [2020] QSC 133, cited / Annie Street JV Pty Ltd v MCC Pty Ltd [2016] QSC 268, cited / City of Ryde v AMFM Constructions Pty Ltd [2011] NSWSC 1469, cited / Hossain v Minister for Immigration and Border Protection (2018) 264 CLR 123; [2018] HCA 34, cited / LPDT v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (2024) 280 CLR 321; [2024] HCA 12, considered / Tomkins Commercial & Industrial Builders Pty Ltd v York Property Holdings Pty Ltd [2025] QSC 261, considered
COUNSEL: M D Ambrose KC, with T W Ambrose, for the appellant / D S Piggott KC, with J E Menzies, for the respondents
SOLICITORS: Holding Redlich for the appellant / Thomson Geer for the respondents
BOWSKILL CJ: In August 2021, the appellant (York) engaged the respondent (Tomkins) as the head contractor for the construction of an apartment building on the Gold Coast. Disputes arose in relation to two progress payments, which were referred to an adjudicator under the Building Industry Fairness (Security of Payment) Act 2017 (Qld) (BIF Act). The disputes included disagreement about the design responsibility for, and quality of, the building’s façade.1 Tomkins challenged a number of parts of the adjudicator’s two decisions on the basis of jurisdictional error. The learned primary judge upheld one of Tomkins’ challenges, finding that a part of the adjudicator’s decision, which allowed a deduction for the “estimated cost of rectifying the façade”, was void for jurisdictional error. By this appeal, York contends the primary judge erred in reaching this conclusion.
The primary judge’s decision was correct. The error made by the adjudicator was failing to perform the task required of him by s 88(1), as informed by s 72(1), of the BIF Act of determining, first, whether the contested work “is defective” and second, if so, the “estimated cost of rectifying the defect”. It is an implied condition of the statutory conferral of decision-making authority on an adjudicator that the adjudicator perform the task required by s 88(1). The failure to comply with that condition results in a decision which lacks the characteristics necessary for it to be given legal force: a jurisdictional error.2 I would dismiss the appeal, with costs.
The legislative context
Section 70 of the BIF Act provides for progress payments to be made.
Under s 71, the amount of a progress payment, where (as in this case) the contract does not provide for the matter, is “the amount calculated on the basis of the value of construction work carried out … by the person in accordance with the contract”3 (s 71(b)).
Relevantly, s 72(1) of the BIF Act provides:
“Construction work carried out under a construction contract is to be valued –
if the contract provides for the matter – in accordance with the contract; or
if the contract does not provide for the matter – having regard to –
the contract price for the work; and
any other rates or prices stated in the contract; and
any variation agreed to by the parties to the contract by which the contract price, or any other rate or price stated in the contract, is to be adjusted by a specific amount; and
if any of the work is defective, the estimated cost of rectifying the defect.”4
“88 Adjudicator’s decision
An adjudicator is to decide –
the amount of the progress payment, if any, to be paid by the respondent to the claimant (the adjudicated amount); and
the date on which any amount became or becomes payable; and
the rate of interest payable on any amount.
In deciding an adjudication application, the adjudicator is to consider the following matters only –
the provisions of this chapter [which includes s 72] and, to the extent they are relevant, the provisions of the Queensland Building and Construction Commission Act 1991, part 4A;
the provisions of the relevant construction contract;
the payment claim to which the application relates, together with all submissions, including relevant documents, that have been properly made by the claimant in support of the claim;
the payment schedule, if any, to which the application relates, together with all submissions, including relevant documents, that have been properly made by the respondent in support of the schedule;
the results of any inspection carried out by the adjudicator of any matter to which the claim relates.”5
The adjudicator’s decision
Tomkins made a payment claim for just over $22.4 million, for work carried out to the end of May 2024.6 York responded with a payment schedule, disputing a number of items and deducting amounts for work said to be defective or not in accordance with the contract, resulting in a negative figure of just over $1.2 million.7 The adjudicator decided that the amount payable for this payment claim was $920,892.8
One element of the works the subject of the payment claim was the façade of the building (comprising the curtain wall, aluminium door and windows). Tomkins claimed an amount of $7,510,3669 for this work, on the basis it was 46% complete. Taking account of an amount of $4,764,178 previously claimed, the claimed amount was $2,746,188.10
In response to the claim, York contended the façade works were only 29% complete, and that the value of work completed to that point in time was the amount of $4,764,178 which had already been claimed. Another aspect of the dispute concerned design responsibility. York contended that Tomkins was required, under the contract, to provide a “form 15” certification of design for the building’s “façade system”.11 Tomkins disputed that. In the absence of a form 15, York said it was not able to determine whether the façade had been constructed in accordance with the contract and was “concerned that the entirety of the façade may be defective”. It was on this basis that York, in response to the payment claim, deducted “the value of works undertaken to date” (on York’s assessment, the $4,764,178 already paid) because “the entirety of the façade installed by [Tomkins] [was] rejected”.12
The adjudicator resolved the first part of this dispute in favour of Tomkins, finding that York had not substantiated its assessment of façade works completed (as only 29%) and therefore accepting Tomkins’ assessment of the works as being 46% complete. Taking the amount already paid ($4,764,178) from the value of the work done to that point ($6,802,706, as reduced in the adjudication application), the adjudicator arrived at an adjudicated amount of $2,038,528 for the façade works.
“106.… I consider that the claimant is required to provide a form 15 for the façade works.
The respondent is concerned that the entirety of the façade may be defective in particular weatherproofing and structural integrity. These issues are supported by the reports and photos provided in the adjudication response. The respondent has requested the claimant to provide a form 15 which would address these issues.
In the absence of a form 15, which as discussed above I find the claimant is required to provide, the respondent’s concerns over the façade are not addressed by the claimant. Accordingly, as contended by the respondent, the entire façade may require removal and replacement.
The respondent has estimated the costs of rectifying the defects at the previously assessed value of the work completed (prior to the payment claim) of $4,764,178.27 excl. GST. The claimant has not provided any alternate estimate of the cost of rectifying the defects in the façade.
Accordingly, I value the estimated cost of rectifying the facade at $4,764,178.27 excl. GST pursuant to section 72(1)(b)(iv) of the Act.”14
The decision at first instance
“[160]The first concern I have with the Adjudicator’s approach is that he did not actually make a finding that any of the work was defective. Rather, he accepted that the entire façade ‘may’ require removal and replacement. He reached that conclusion on the basis of his earlier findings that Tomkins was required to provide a Form 15 and that in the absence of doing so the ‘concerns’ raised by York about the work performed had not been addressed. Although it seems that the Adjudicator accepted York’s argument that the work was not in accordance with the contract, that was not a finding that the work was defective, such that it had to be removed and replaced. At its highest, it was a conditional finding that those things might need to be done.
[161]The second concern I have is that irrespective of the absence of an actual finding that the work was defective, the Adjudicator purported to value the work under s 72(1)(b) of the BIF Act without there being any evidence before him of the estimated costs of rectifying the defect. The Adjudicator assessed the estimated costs as $4,764,178.27, which was simply the amount that had previously been paid by York to Tomkins for the work done before Payment Claim No. 32 and which York claimed it was entitled to withhold under the contract. Irrespective of whether that was so, the amount identified was not an estimate of the costs of rectifying the work. Unlike other instances in the First and Second Adjudication Decisions, where the Adjudicator had assessed the value of defective work according to the evidence before him, on this occasion there was no such evidence and thus no foundation for his decision.
[162]In the result, I am satisfied this aspect of the Second Adjudication Decision was at least affected by jurisdictional error of the kind complained of under Jurisdictional Error 7. I also accept, as Tomkins contends in respect of Jurisdictional Errors 4 and 5, that it was illogical and incoherent for the Adjudicator to decide that the value of the work to date was $6,802,706.65, yet then value the supposedly defective work at $4,764,178.27. If in fact the work to date was defective because it may need to be replaced, then according to the Adjudicator’s reasoning the value of those works should surely have been the full amount of $6,802,706.65. Whilst that finding alone might not demonstrate jurisdictional error, the matter is put beyond doubt in my view by the Adjudicator’s approach of selecting the figure of $4,764,178.27 as an estimate of the costs of rectifying defective work when valuing the work under s 72(1) of the BIF Act. To my mind, the Adjudicator’s approach shows that he did not consider the matters he was required to consider under s 88(2) of the BIF Act, in particular the payment schedule to which the application relates, together with all submissions, including relevant documents, that had been properly made by the respondent in support of the schedule under s 88(2)(d). Had he done so, it would have been evident to him that York’s submissions did not actually suggest that he should value the work in the manner he did and, moreover, that there was no evidence of an estimate of costs of rectifying the supposed defective work.”15
The reference to jurisdictional errors 4, 5 and 7 in the Reasons are references to the errors which Tomkins submitted affected this part of the adjudicator’s decision – that the decision was illogical or perverse (error 4) and incoherent (error 5) and that the adjudicator had failed to consider Tomkins’ submissions and the provisions of the contract (error 7).16 In relation to another part of the decision, Tomkins argued that the adjudicator fell into jurisdictional error by failing to perform the task of valuing the work or the estimated costs of rectification (error 3).17 As explained below, the latter is a more appropriate description of the particular error made by the adjudicator, in so far as the façade deduction is concerned. The primary judge captures this, in substance, in [160] and [161] of the Reasons. The fact that the particular nature of the jurisdictional error made by the adjudicator may be different from that which was contended by Tomkins below does not affect the outcome of this appeal. If affected by jurisdictional error, the decision (or relevant part of it18) is “in law … no decision at all”.19
As a result of finding this part of the decision void for jurisdictional error, the primary judge found the adjudicator’s decision should be adjusted, so that the amount payable by York was increased by $4,764,178, for the value of the façade works completed by Tomkins.20
The grounds of the appeal
Jurisdictional error
The only basis on which an adjudicator’s decision may be challenged is by invoking the supervisory jurisdiction of this Court on the basis of jurisdictional error.22 There is no appeal from an adjudicator’s decision under s 88 of the BIF Act, and such decisions are not reviewable under the Judicial Review Act 1991 (Qld).23
In broad terms, the valid exercise of an adjudicator’s jurisdiction is conditioned on the adjudicator carrying out the function conferred on them by s 88(1), by a process which considers the matters set out in s 88(2) and does not consider the matters set out in s 88(3) of the BIF Act, giving reasons as required by s 88(5) and affording both parties procedural fairness.24
An adjudicator who purports to make a decision, but in doing so fails to perform the function conferred on them by s 88(1), makes an error which is jurisdictional,25 rendering the decision invalid.
One element of the argument in this case, at least at first instance, was that the adjudicator’s decision was, in one respect, “illogical and incoherent”. However, it was not disputed that illogicality or incoherence of reasons (or reasoning) does not, of itself, amount to jurisdictional error. As Brereton J said in City of Ryde v AMFM Constructions Pty Ltd [2011] NSWSC 1469 at [9]:
“… The significance of the reasons, or their inadequacy, is that in the context of the surrounding material they may reveal jurisdictional error, or that the adjudicator has not performed the task of determining an adjudicated amount by reference to the specified relevant factors [under the legislation].”
There will, however, have been a failure to exercise jurisdiction where “the reasons do not reveal any foundation or logical basis for the decision”.26
The key enquiry in this case is whether the adjudicator performed the task required of him under s 88(1) of the BIF Act, namely, to decide the amount of the progress payment, if any, to be paid by York to Tomkins. This task required the adjudicator to determine “the value of construction work carried out” (s 71(b)) which in turn required the adjudicator to have regard to the factors listed in s 72(1)(b), in particular, “if any of the work is defective, the estimated cost of rectifying the defect” (s 72(1)(b)(iv)).27
Argument before the adjudicator
It is relevant to understand the way York put its argument to the adjudicator.
York’s response to Tomkins’ payment claim included a table headed “work not in accordance with contract”. One of the items of construction works in this table is the façade. The “value of deduction” for this item is $4,764,178. In the “comments” section, the following appears:
“Full details and particulars have been previously provided in the Scott Schedule/John deduction noted herein is the value of the works undertaken to date which have not been completed in accordance with the Contract. The total value of the façade works completed as assessed earlier in this schedule are hereby reduced by this sum. In the alternative, the deduction is made pursuant to clause 29.3 and/or 37.7 of the Contract. Notice has been issued in S1168 that façade works are not in accordance with the Contract under Clause 29.3 and/or not currently in accordance with the Contract. Claim for façade rejected because the entirety of the work installed by the Contractor is currently non-compliant with the Contract. We further note deficiencies in relation to the waterproofing around installed windows (including openings not being waterproofed and a lack of waterproofing behind sliding doors in accordance with AS 4654.2), leaking façade, rusting façade members, noted in Schedule issued in S1170, S170A and S1209 including smoke seals clashing with pelmets among other things. Significant glazing removal and replacement may be required…”28
“In respect of the ‘construction works’ deductions, these are not for costs incurred by the Respondent to engage others to rectify defects and instead reflect the Superintendent’s assessment of the estimated cost of rectification (in accordance with section 72(1)(b)) due to certain works being defective or not in accordance with the Contract.”29 (at [385])
Although described as the superintendent’s assessment of “the estimated costs of rectification”, it was not controversial that the assessment was limited to what appears in the table referred to in paragraph [24] above – that is, the estimated cost of rectification was said to be “the value of the works undertaken to date”.
There was information, in the Scott schedule which accompanied York’s payment schedule, about particular alleged defects in the façade works (in particular, as to waterproofing).30 But there was no evidence, or submission, as to the estimated cost of rectifying any particular defects. The approach to this issue, by York, was to contend that, in the absence of a form 15, there was a risk that the entire façade would need to be replaced, the estimated cost of which was the cost of the work undertaken to that point in time (on York’s assessment) to construct the façade.
In York’s submissions to the adjudicator, York noted that in the first adjudication decision, the adjudicator had valued York’s “façade deduction” at $952,934 (at [401]). York identified that the superintendent had now “certified a deduction of $4,764,178.27 (excluding GST) in respect of the façade” (at [398]), which reflected the value of the works completed at that stage (on York’s assessment, of 29%). York stated that the “value of the deduction has increased because the value of the non-compliant façade work has increased” (at [403]). York submitted that it was “justified in withholding payment for the façade works completed to date (by way of this deduction) due to significant non-conformances with the contractual requirements” (at [408]). York submitted that “[w]ithholding payment is a prudent measure (permitted under the Contract) to ensure that the façade works meet all contractual obligations and safety standards before any further payments are made” (at [425]).
These paragraphs of York’s submissions make it clear that the figure put forward by York as the appropriate “deduction” for the potentially defective façade work was not an estimate of the cost of (actually) rectifying any defects.
The adjudicator failed to perform the task required of him
The adjudicator made no finding that the façade work, or any particular part of it, “is defective”. The adjudicator recorded York’s “concern” that the entirety of the façade may be defective, in particular as to weatherproofing and structural integrity (at [107]). The adjudicator found that Tomkins was required to provide a form 15, and accepted the respondent’s argument that, in the absence of a form 15, “the respondent’s concerns over the façade are not addressed” by Tomkins (at [108]). On that basis, the adjudicator accepted the respondent’s contention that the entire façade may require removal and replacement. This is not a finding that any of the construction work “is defective”.
Further, the adjudicator made no finding as to “the estimated cost of rectifying the defect”. In fairness to the adjudicator, he had no evidence of the estimated cost of rectifying the potential defect. All that the adjudicator had was an argument, by York, that, the “entirety of the façade installed by the claimant is rejected”, because York could not determine, without a form 15, whether the works had been completed in accordance with the contract, and that a deduction should be made “for the value of the works undertaken to date” to reflect this: in substance, that payment should be withheld until it could be determined whether the façade had been constructed in accordance with the contract. There was no evidence before, or submission made to, the adjudicator about “the estimated cost of [actually] rectifying the defect”.
In reaching his decision, the adjudicator adopted the figure attributed to this deduction by York as the “estimated cost of rectifying the façade”, but he did not address the statutory requirement under s 72(1)(b)(iv). In short, he did not perform the function conferred on him by s 88(1), read with s 88(2) and s 72(1). The decision was therefore made in breach of the implied condition of the statutory conferral of decision-making authority on the adjudicator – namely, that he perform the task required of him by the BIF Act.
The failure to perform that task is apparent from [107]-[110] of the adjudicator’s decision. It is reinforced having regard to the earlier finding made by the adjudicator, as to the value of the façade work completed at the time of the payment claim (at [75]-[79] of the decision). As the primary judge found, it was illogical and incoherent for the adjudicator to decide:on the one hand, that York had “not substantiated its assessment of the façade works completed” (as only 29%), and to value the façade work completed at that point in time at the figure claimed by Tomkins (representing 46%); andon the other hand, to “value the supposedly defective work”, on the basis that this represented the cost of the work done to that point in time, at the lower figure (representing 29%) claimed by York.
Order
As no error has been shown in the decision of the primary judge, the appeal should be dismissed, with costs.
BROWN JA: I agree with the Chief Justice that the appeal should be dismissed for the reasons set out by her Honour.
BRADLEY JA: I agree with the reasons of Bowskill CJ and the order her Honour proposes.
Tomkins Commercial & Industrial Builders Pty Ltd v York Property Holdings Pty Ltd [2025] QSC 261 (Reasons) at [5] and [135]. ↩
Hossain v Minister for Immigration and Border Protection (2018) 264 CLR 123 at [24] per Kiefel CJ, Gageler and Keane JJ; LPDT v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (2024) 280 CLR 321 at [2]. ↩
Underlining added. ↩
Underlining added. ↩
Underlining added. ↩
Reasons at [103]. ↩
Reasons at [104]. ↩
Reasons at [106]. In these reasons, for ease of reference, whole dollar amounts only are referred to. ↩
In the adjudication application, this figure was reduced to $6,802,706, to account for “unfixed materials” (see [69] of the adjudicator’s decision). ↩
Reasons at [136]. The figures quoted are taken from the extract from the payment claim itself, which differ slightly from those in [136] of the Reasons. ↩
This is a reference to a compliance certificate for building design or specification under the Building Act 1975 (Qld). See Reasons at [143]. ↩
York Property Holdings Pty Ltd
Tomkins Commercial & Industrial Builders Pty Ltd [2026] QCA 63
(2018) 264 CLR 123
(2024) 280 CLR 321
(2002) 209 CLR 597
Appeal dismissed, with costs.
However, the adjudicator resolved the next part of the dispute in favour of York. In dealing with this part of the claim, the adjudicator said:
Although this illogicality may not, of itself, support a conclusion of jurisdictional error, it draws into sharp focus the fundamental failure to perform the task required.
It follows that none of the grounds of appeal are made out. As to ground 2, the primary judge did not err in finding that the adjudicator only made a conditional finding as to defective work. As to ground 3, nor did the primary judge err in finding that there was no foundation for the adjudicator’s finding of the amount of $4,764,178 as an estimated cost of rectifying the work. And as to ground 4, the primary judge’s observation of illogicality or incoherence of reasons underscored the conclusion as to jurisdictional error.
As to ground 1, the fundamental error identified by the primary judge, in [160] and [161] of the Reasons, was a failure by the adjudicator to perform the task required of him by the statute. That conclusion was correct. The reference to a failure to consider the matters the adjudicator was required to consider under s 88(2)(d) of the BIF Act, in [162] of the Reasons, was made in the context of the point about illogicality and having regard to the formulation by Tomkins of “jurisdictional error 7”.31 The primary judge found that it was to be inferred the adjudicator did not consider the matters he was required to consider under s 88(2)(d), including the payment schedule and submissions, because it was clear from that material that York was not contending that $4,764,178 was an estimate of the cost of rectifying the supposed defective work; rather, it was the amount proposed to be withheld in order to compel compliance with the contract. That may be so – or another explanation may be that he did consider the material but misconstrued it. In substance, the jurisdictional error made by the adjudicator was a failure to perform his task, as found by the primary judge at [160]-[161]. For present purposes, therefore, it is unnecessary to deal in any further detail with what it means in this context to “fail to consider” something.
Adjudicator’s decision at [99]. ↩
Adjudicator’s decision at [78]-[79] and [147]. ↩
Underlining added. ↩
Underlining added. ↩
Reasons at [144]. ↩
Reasons at [113]. ↩
See s 101(4) of the BIF Act. ↩
LPDT v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (2024) 280 CLR 321 at [2], referring to Minister for Immigration and Multicultural Affairs v Bhardwaj (2002) 209 CLR 597 at [53]. ↩
Reasons at [163]. ↩
There was a fifth ground identified in the notice of appeal, but senior counsel for York acknowledged at the hearing that it added nothing as a standalone ground and was subsumed by the first four grounds. It is, therefore, unnecessary to address it separately. ↩
For a recent summary of the relevant principles regarding jurisdictional error see LPDT v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (2024) 280 CLR 321 at [2]-[16] and [38]. ↩
See s 18(2)(b) and schedule 1, part 2 of the Judicial Review Act. ↩
Acciona Agua Australia Pty Ltd v Monadelphous Engineering Pty Ltd (2020) 4 QR 410 at [34]-[41]. ↩
LPDT v Minister for Immigration, Citizenship, Migrant Services and Multicultural Affairs (2024) 280 CLR 321 at [6]-[7]. ↩
Annie Street JV Pty Ltd v MCC Pty Ltd [2016] QSC 268 at [29]-[30]. ↩
Underlining added. ↩
Emphasis added. ↩
Underlining added. ↩
See items 8 and 16 of the Scott schedule dated 5 May 2024. ↩
See paragraph [14] above. ↩