Two Independent Reasons the Historical Premise in Shah May Not Hold In my view, a significant part of the reasoning in Kyson & Power v Shah [2023] EWCA Civ 239 rests on assumptions about the statutory regime that preceded the Party Wall etc. Act 1996. Those assumptions deserve closer examination. The Court of Appeal looked to the London Building Acts (Amendment) Act 1939 and, through Woodhouse v Consolidated Property Corp Ltd and Louis and Louis v Sadiq, treated the earlier legislation as supporting a simple proposition: No notice = no Act. In essence, the judgment treated service of notice as the gateway to the statutory dispute-resolution machinery. Two independent arguments suggest that historical premise is less secure than it first appears. A third point concerns the Court’s reliance on the Barras principle. A fourth identifies a tension within one of the very authorities upon which the historical premise depends. Section 55(i) of the 1939 Act provided: “The agreed surveyor or as the case may be the three surveyors or any two of them shall settle by award any matter which before the commencement of any work to which a notice under this Part of this Act relates or from time to time during the continuance of such work may be in dispute between the building owner and the adjoining owner.” This provision clearly tells us what happens where notice has been served. It does not expressly tell us what happens where a building owner simply fails to serve one. On that question, the section is silent. There is an important distinction between these propositions: ✅ The Act expressly provides a procedure where notice has been served. ❌ The Act expressly provides that the Act cannot operate where notice has not been served. The first proposition is plainly correct. The second is nowhere stated. Moving from the first proposition to the second requires a further interpretative step. The orthodox reading may ultimately be correct, but it is important to recognise that it is an inference rather than an express statutory command. Had Parliament intended notice to be an absolute jurisdictional precondition, it could readily have said so. For example: “No difference shall be determined unless notice has first been served.” It did not. More significantly, section 55 begins by referring to: “any matter connected with any work to which this Part of this Act relates.” At first sight, that language links jurisdiction to works governed by the legislation rather than to the existence of a notice. A striking feature of both the 1939 Act and the Party Wall etc. Act 1996 is that Parliament repeatedly states when their substantive provisions apply. Section 1 has effect where adjoining lands exist. Section 2 applies where adjoining lands are built upon at the line of junction. Section 6 applies where the prescribed excavation criteria are satisfied. In each case the trigger is the existence of objective facts. The trigger is not the service of notice. The notice provisions appear later and impose obligations on the building owner once those factual conditions already exist. This creates an important conceptual difficulty for the “no notice, no Act” proposition. If Parliament has expressly stated when the Act applies, where is the provision stating that it ceases to apply when a building owner fails to perform one of his obligations? Nothing in sections 1, 2 or 6 suggests that their operation depends upon prior compliance with the notice requirements. Rather, the statutory sequence appears to run in the opposite direction. The Act applies first. The Act then requires notice. The same point emerges from section 20. The Act defines a building owner as: “an owner of land who is desirous of exercising rights under this Act.” That definition is significant. A person becomes a building owner because he wishes to exercise rights that the Act confers. The Act therefore recognises his status before any notice has been served. Indeed, the statutory obligations that follow only make sense if the Act is already engaged. One cannot serve a party wall notice unless there is already a building owner and an adjoining owner within the meaning of the Act. The statutory sequence therefore appears to be: Proposed works → Act applies → parties acquire statutory status → obligations arise → notice must be served Not: Notice served → Act suddenly begins to operate Put shortly: The Act invokes the notice. The notice does not invoke the Act. The point can be put more directly. Both the 1939 Act and the 1996 Act identify the categories of work to which they apply. Once proposed works fall within those statutory descriptions, the legislation applies to them by force of statute. What is notably absent from either Act is any provision explaining how the legislation ceases to apply because a building owner has failed to comply with it. The Acts impose obligations: • to serve notice; • to wait prescribed periods; • to participate in the surveyor procedure; • to comply with awards. But nowhere do they state that failure to comply removes otherwise qualifying works from the statutory regime. The Acts contain mechanisms by which disputes end. Awards are made. Works are completed. Jurisdiction may become exhausted. However, there is no equivalent provision stating that the legislation itself ceases to apply because a notice has been omitted. Ordinarily, breach of a statute does not switch the statute off. The breach is the reason the legislation intervenes, not the reason it disappears. The “no notice, no Act” proposition therefore requires more than establishing a breach of the notice requirement. It requires the additional proposition that Parliament intended non-compliance to operate as a form of statutory disapplication. Yet no express mechanism producing that result appears in either Act. The difficulty can be stated more starkly. The Act itself imposes the obligation to serve notice. Section 3 does not create the Act. Rather, it assumes the Act is already engaged and requires the building owner to perform a statutory duty before exercising rights conferred by the legislation. That gives rise to a conceptual problem for the “no notice, no Act” proposition. If the Act creates the obligation to serve notice, how can breach of that obligation simultaneously extinguish the very statutory regime from which the obligation derives? The statutory sequence appears to be: Proposed notifiable works → Act applies → duty to serve notice arises → duty is breached The orthodox “no notice, no Act” analysis effectively adds a further step: Duty breached → Act ceases to apply Yet the statute nowhere explains how that transition occurs. Ordinarily, breach of a statutory obligation does not cause the statute itself to disappear. The breach is the reason the legislation intervenes, not the reason it ceases to operate. A motorist who drives without insurance remains subject to road traffic legislation. An employer who breaches employment legislation remains subject to employment legislation. Likewise, it is not immediately obvious why a building owner’s failure to serve notice should remove otherwise qualifying works from the scope of the Party Wall etc. Act 1996. The practical consequence is striking. A compliant building owner remains subject to the Act. A non-compliant building owner purportedly escapes the statutory dispute-resolution machinery altogether. That creates the curious possibility that compliance attracts regulation while non-compliance removes it. The Act was enacted to regulate the exercise of party wall rights and provide a specialist mechanism for resolving disputes. It would be an unusual statutory scheme if the moment a building owner breached one of its core procedural requirements, the legislation effectively disengaged itself and deprived the adjoining owner of the protections Parliament intended him to enjoy. Parliament routinely specifies the consequences of statutory breach. What neither the 1939 Act nor the 1996 Act appears to say is that breach of the notice requirement extinguishes the statutory code itself. Viewed in that light, the proposition may be expressed simply: A breach of the Act is ordinarily a reason for the Act to apply, not a reason for the Act to disappear. The reasoning of HHJ Thornton QC in Crowley v Rushmoor BC appears difficult to reconcile with the notion that non-service disapplies the Act. [F01CL237 S…n 20200227 | PDF] At paragraph 101 he stated: “These provisions of the Party Wall Act are mandatory and it is no answer to the non-service of the requisite notice that it was not appreciated or foreseen that the Party Wall Act would be engaged.” [F01CL237 S…n 20200227 | PDF] More significantly, at paragraph 103 he stated: “the relevant arbitration provisions provided for by the Party Wall Act can always be operated retrospectively.” [F01CL237 S…n 20200227 | PDF] That statement appears to proceed from the assumption that the dispute-resolution machinery continues to exist notwithstanding the failure to serve notice. One cannot retrospectively operate machinery that has ceased to exist. Whether Crowley is ultimately correct is a separate question. However, it does suggest that at least one substantial judicial analysis of the Act proceeded on the basis that failure to serve notice constituted non-compliance with the Act, rather than a mechanism by which the Act disappeared altogether. [F01CL237 S…n 20200227 | PDF] A further point deserves attention. Only months before deciding Shah, HHJ Parfitt handed down judgment in Yamin v Edwards. The circumstances were strikingly similar. No notices had been served, surveyors were appointed retrospectively, an award was made, and the jurisdiction of the surveyors was challenged. [YaminEdwards | PDF] The judgment expressly records: “No notices pursuant to the Act were served by the Claimants in respect of the extension works.” [YaminEdwards | PDF] Thus, the absence of notice was neither hidden nor overlooked. Yet throughout the judgment the dispute was treated as one concerning: “work to which this Act relates”. [YaminEdwards | PDF] More significantly, the judge rejected the argument that surveyors lacked jurisdiction because the works had largely been completed, observing: “I was not referred to any section of the Act that would mean that section 10 … is limited in application to circumstances where work had yet to be completed.” [YaminEdwards | PDF] He went on to conclude that: “surveyors can be appointed to resolve disputes under the Act after the completion of works.” [YaminEdwards | PDF] The significance of Yamin is not that it decided precisely the same issue later argued in Shah. It did not. The specific jurisdictional argument that ultimately prevailed in Shah was not advanced in the same form. [YaminEdwards | PDF] Nevertheless, the judgment appears to proceed on a premise that sits uneasily beside the reasoning later adopted in Shah. In Yamin, the absence of notice formed part of the factual background to a dispute falling within section 10. In Shah, absence of notice became the reason section 10 was said never to arise. That is not necessarily a contradiction. But it does reveal a shift in analytical starting point that warrants explanation. Why, in a case involving no notices, retrospective appointments, a section 10 award, and a challenge to jurisdiction, was the absence of notice treated in Yamin as a failure to comply with the Act rather than as a circumstance preventing the statutory machinery from operating at all? [YaminEdwards | PDF] The question becomes more striking given that both Yamin and Shah arose in the same court, involved the same surveyors, concerned similar factual circumstances, and were decided by the same judge within a matter of months. [YaminEdwards | PDF], [F01CL237 S…n 20200227 | PDF] Whether there is a satisfactory answer may be debated. But the transition from one apparent premise to the other is not immediately obvious and forms part of the wider historical picture against which Shah should be understood. Consider the result. Serves notice. ⬇️ Statutory machinery becomes available. ⬇️ Adjoining owner receives the benefit of specialist dispute resolution. Fails to serve notice. ⬇️ Statutory machinery disappears. ⬇️ Adjoining owner loses access to the specialist tribunal and must resort to ordinary litigation. That is a curious outcome. The building owner’s breach becomes the very reason the adjoining owner is deprived of the protections that Parliament created. Put another way: If the Act applies because the proposed works fall within statutory categories, and the Act contains no provision disapplying itself upon non-service, why should the adjoining owner’s statutory protections vanish solely because the building owner has breached the Act? A construction producing that outcome risks rewarding the very conduct the legislation was enacted to regulate. The policy concern does not determine the answer. But it illustrates why exclusion should not be lightly implied. The Government’s explanatory guidance states that: “the Act contains no enforcement procedures for failure to serve a notice” and explains that an adjoining owner may seek an injunction or other legal remedies. [no-notice-…ents_embed | HTML] That language appears to contemplate alternative remedies operating alongside the statutory scheme. It does not suggest that the statutory scheme itself ceases to exist. This argument stands independently of the first. Even if silence can imply exclusion, section 55(i) contains a textual feature that appears largely unexplored. The section contains two limbs joined by the word “or”: Disputes arising before commencement of: “any work to which a notice under this Part of this Act relates” Disputes arising: “from time to time during the continuance of such work” Notice appears expressly in Limb 1. It does not appear expressly in Limb 2. Everything therefore turns on the phrase: “such work” The conventional interpretation is straightforward: “such work” refers back to the immediately preceding notice-qualified work. That interpretation has obvious force. However, another possibility exists. Earlier in section 55, Parliament had already referred to: “any matter connected with any work to which this Part of this Act relates” That broader description is not qualified by notice. Accordingly, it is at least arguable that “such work” refers back to the broader category of statutory works already identified in the section, rather than importing Limb 1’s notice qualification into Limb 2. If Parliament intended notice to qualify both limbs equally, a more direct formulation might have been: “before the commencement of, or during the continuance of, any work to which a notice under this Part relates.” Instead, the notice reference appears only in Limb 1. Whether that linguistic distinction is decisive is open to debate. But neither Shah nor the earlier authorities appear to address the possibility directly. The point gains some support from Park Lane Holdings v Saidco. There, HHJ Parfitt held that surveyors’ jurisdiction arising from a particular notice had come to an end once that dispute had been resolved. Yet Limb 2 speaks of disputes arising: “from time to time during the continuance” of the works. That language appears to envisage fresh disputes emerging during ongoing works, potentially re-engaging surveyor jurisdiction. At the very least, Limb 2 appears capable of carrying more weight than it has traditionally been given. A fair objection must be addressed. The Court of Appeal did not rely solely upon statutory text. It relied heavily upon the Barras principle. Under that principle, where Parliament substantially re-enacts language that has already received a settled judicial interpretation, Parliament is presumed to have adopted that interpretation. The Court therefore treated Woodhouse and Louis v Sadiq as establishing the relevant meaning under the 1939 Act, with section 10 of the 1996 Act carrying that meaning forward. The difficulty is that the historical picture may not have been as settled as the reasoning requires. In Crowley v Rushmoor BC, HHJ Thornton QC stated: “A building owner … has a strict duty to serve appropriate notices and to take all other prescribed steps set out in the Party Wall Act, even if he considers that the proposed work does not engage that Act.” [F01CL237 S…n 20200227 | PDF] That reasoning treats applicability as an objective question. The Act applies if the works fall within it. The building owner’s belief is irrelevant. Likewise, in Bridgland v Earlsmead Estates, Judge Grant held that section 7(1) bound a building owner: “irrespective of whether or not he serves a party structure notice.” [no-notice-…ents_embed | HTML], [F01CL237 S…n 20200227 | PDF] That conclusion sits uneasily with the proposition that non-service removes a building owner from the statutory regime altogether. If the authorities were divided, nuanced, or capable of supporting different interpretations, then the foundation for applying the Barras presumption becomes materially weaker. The 1996 Act requires notice before works begin. For party structure works: ➡️ At least two months’ notice For adjacent excavation works: ➡️ At least one month’s notice Once works have commenced without notice, compliance with those timing requirements becomes impossible. Yet Louis v Sadiq, one of the authorities commonly cited for the importance of notice, appears to proceed upon the assumption that a late notice can still restore statutory authority. Evans LJ stated: “If he does then give notice he will in due course acquire statutory authority…” and later referred to authority being obtained in the future. [no-notice-…ents_embed | HTML] The judgment therefore appears to assume that statutory authority may still be acquired after works have already begun. That sits uneasily beside a statutory scheme framed expressly by reference to notice being given before commencement. 🔹 What happens when notice is served? 1939 Act: Procedure expressly prescribed. 1996 Act: Procedure expressly prescribed. 🔹 What happens if notice is not served? 1939 Act: No express provision. 1996 Act: No express “no notice, no Act” provision. 🔹 What determines whether the legislation applies? 1939 Act: Works to which the relevant Part relates. 1996 Act: Works to which the Act relates. 🔹 Is there an express mechanism disapplying the Act because notice was not served? 1939 Act: None. 1996 Act: None. 🔹 Is notice expressly stated to be a jurisdictional precondition? 1939 Act: No. 1996 Act: No. The predecessor legislation clearly establishes what happens once notice has been served. What it does not do is expressly state that failure to serve notice removes otherwise qualifying works from the statutory scheme. More fundamentally, both the 1939 Act and the 1996 Act specify the circumstances in which they apply, yet neither appears to contain a mechanism by which non-compliance causes the legislation itself to cease applying. The proposition “no notice, no Act” therefore requires a substantial interpretative step beyond the statutory text. The Act appears to apply because objective statutory conditions are satisfied, not because a notice has been served. Indeed, the Act creates the obligation to serve notice in the first place. The Act invokes the notice. The notice does not invoke the Act. And if that is correct, a further question follows. How can breach of an obligation created by the Act simultaneously operate to extinguish the statutory regime from which that obligation derives? A breach of the Act is ordinarily a reason for the Act to apply, not a reason for the Act to disappear. Authorities such as Crowley appear to proceed on that assumption. So too, arguably, did HHJ Parfitt’s own decision in Yamin, where the absence of notices was treated as part of the factual background to a dispute concerning “work to which this Act relates” and where surveyor jurisdiction was accepted despite the works having substantially progressed. [F01CL237 S…n 20200227 | PDF], [YaminEdwards | PDF] The significance of Yamin is not that it decided the precise issue later argued in Shah. It did not. Rather, it appears to proceed from a different analytical starting point. In Yamin, non-service was treated as a failure to comply with the statutory scheme; in Shah, non-service became the reason the statutory scheme was said never to arise. [YaminEdwards | PDF] That is not necessarily a contradiction. But it does reveal a shift in analysis that warrants explanation, particularly given that both cases arose in the same court, involved the same surveyors, concerned closely comparable factual circumstances, and were decided by the same judge only months apart. [YaminEdwards | PDF], [F01CL237 S…n 20200227 | PDF] None of this conclusively disproves the orthodox interpretation. But it does suggest that the historical materials relied upon to support a universal “no notice, no Act” principle are capable of bearing more than one meaning. If so, reliance on the 1939 Act as decisive proof of that proposition may risk assuming the very conclusion that remains to be demonstrated. © 2026 Lee Kyson Building Consultancy Ltd. All rights reserved.No Notice, No Act?
“The Act invokes the notice. The notice does not invoke the Act.”
1️⃣ Argument One: Silence Is Not Exclusion
📌 The Act Determines Its Own Application
🏗️ The Definition of “Building Owner”
📌 The Act Contains No Mechanism of Disapplication
⚖️ The Breach Disengagement Absurdity
📖 Crowley: The Opposite Assumption?
📖 Yamin: The Missing Step
⚠️ The Practical Consequence
Compliant Building Owner
Non-Compliant Building Owner
📖 Government Guidance Points the Same Way
2️⃣ Argument Two: The Forgotten “Or”
Limb 1
Limb 2
🏗️ The Park Lane Difficulty
3️⃣ The Barras Gap
4️⃣ A Fourth Point: The Timing Impossibility Within Louis v Sadiq
📊 Historical Comparison at a Glance
🔑 Conclusion
Historical and textual analysis