Date: Jul 9, 2026

Planning JR: Late Technical Grounds and Superseded Design Objections—Art. 6 of the 2005 Odour/Noise Regulations Satisfied by Standard Compliance Conditions

1) Introduction

In Busher and Ors v An Coimisiun Pleanala and Anor [No. 2] (Approved) [2026] IEHC 434, Humphreys J. dismissed a judicial review challenging An Coimisiún Pleanála’s grant of permission (11 June 2025) to Uisce Éireann for a wastewater treatment plant and pumping station at Kilkee, Co. Clare.

The applicants (local residents) opposed the development on amenity grounds. The case arose against an agreed and pressing factual backdrop: Kilkee had no wastewater treatment infrastructure and untreated wastewater (including raw sewage) had been discharged to coastal waters for decades.

The key legal issues were whether alleged defects in the Commission’s approach to (i) odour/noise regulation, (ii) lighting impacts on neighbouring properties, and (iii) landscaping/visual mitigation—together with complaints about reasons—rose to illegality warranting certiorari, and whether the applicants could rely on (a) points not properly raised in the planning process and (b) affidavit material that, in substance, amounted to submissions or late merits-based expert critique.

2) Summary of the Judgment

Proceedings dismissed. The challenged permission stood.
Affidavit controls applied strictly. A litigant’s affidavit containing argument/commentary was impermissible or of no weight; the purported expert affidavits were inadmissible and/or of no weight where they introduced (or attempted to sharpen) points not raised before the decision-maker and were, in any event, met by contrary evidence without cross-examination.
Ground 1 (odour/noise): no misdirection. The Inspector did not find odour to be outside planning jurisdiction. Article 6 of the 2005 Regulations was largely a “have regard” obligation; the operative duty—to include such conditions as may be necessary in the Board’s opinion—could be satisfied by a standard condition requiring compliance with the plans/particulars (Condition 1), which incorporated commitments to comply with S.I. No. 787/2005.
Ground 2 (lighting): no failure to consider a relevant issue and no inadequacy of reasons. Condition 1 (read with further information) clarified the lighting regime; alleged discrepancies between documents were not shown to create a material defect.
Ground 3 (landscaping): no unlawfulness and, critically, the applicants failed to engage with the appeal-stage alternative landscaping proposal ultimately imposed by Condition 6; criticism aimed at an earlier, superseded scheme could not ground quashing.
Discretion: even if a defect were assumed, the Court indicated certiorari would be disproportionate and contrary to the strong public interest in ending ongoing untreated sewage discharges; further regulatory avenues (EPA oversight/licensing) remained available.

3) Analysis

3.1 Precedents Cited and Their Influence

A. The “record-based” nature of planning JR and the need to have raised points in the process

Coolglass Wind Farm Ltd v. An Coimisiún Pleanála [2026] IESC 5 (para. 118(xiv)) was used for the proposition that (outside autonomous obligations) material capable of sustaining a point must have been properly before the decision-maker so as to give rise to a duty to consider it. This underpinned the Court’s refusal to let late technical points (notably the applicants’ post-decision reliance on the 2005 Regulations) drive invalidation.
Authorities emphasising pleadings discipline—A.P. v. Director of Public Prosecutions [2011] IESC 2, Khashaba v. Medical Council [2016] IESC 10, Casey v. Minister for Housing, Planning and Local Government & Ors. [2021] IESC 42, Concerned Residents of Treascon and Clondoolusk v. An Bord Pleanála & Ors. [2024] IESC 28—were invoked to frame the litigation as confined to properly pleaded grounds, and to caution against “constructing” new angles via affidavits or late submissions.
The High Court also relied on a line of cases (cited in the parties’ preliminary issues) on the impropriety of introducing merits-based expert critiques late, including Monkstown Road Residents Association v An Bord Pleanála [2022] IEHC 318 and Friends of the Irish Environment CLG [2026] IEHC 205, aligning with a planning-JR norm: courts review the legality of the decision on the administrative record, not the “best possible” engineering case assembled later.

B. Reasons: “main reasons on the main issues” and reasons located in the wider record

The Court anchored its approach to reasons in Supreme Court authority that rejects a requirement for discursive engagement with submissions: Oguekwe v. Minister for Justice, Equality and Law Reform [2008] IESC 25 and Rawson v. Minister for Defence [2012] IESC 26.
The “main reasons on the main issues” formulation was supported by Connelly v. An Bord Pleanála [2018] IESC 31 and O'Keefe v. An Bord Pleanála [1993] 1 I.R. 39.
The Court emphasised that reasons may be found across the decision and record: Killegland Estates Ltd v Meath County Council [2023] IESC 39 (§71), Lanigan v Barry [2016] IESC 46, and again Connelly v. An Bord Pleanála [2018] IESC 31. This mattered to Grounds 1–3: the Commission’s conclusions on amenity and acceptability could be read with the lodged particulars, further information, and (where relevant) the Inspector’s report.
A presumption that the decision-maker considered the material it says it considered (unless rebutted) was drawn from G.K. v. Minister for Justice, Equality and Law Reform [2002] 2 I.R. 418, An Taisce v. An Bord Pleanála & Ors. [2022] IESC 8, and Rana v. Minister for Justice [2024] IESC 46.

C. Standard of review and the merits/legality divide

Amariei v. Chief Appeals Officer [2026] IESC 22 (and earlier classics including the State (Keegan) v. Stardust Compensation Tribunal [1986] I.R. 642, Meadows v. Minister for Justice, Equality and Law Reform [2010] IESC 3, Sweeney v. Fahy [2014] IESC 50) was used to reiterate that JR is about legality, not merits.
Evaluative planning judgments are reviewable on irrationality where not tainted by legal/procedural/factual error: Sherwin v. An Bord Pleanála [2024] IESC 13. This contextualised the Court’s resistance to turning odour, lighting, and landscaping into a de facto merits appeal.

D. Onus of proof and evidential conflict without cross-examination

The applicants bore the burden of proving the facts necessary for relief: Amariei v. Chief Appeals Officer [2026] IESC 22.
Where there is a conflict of admissible evidence and no cross-examination, the conflict generally falls to be resolved against the party with the onus: RAS Medical Ltd v. Royal College of Surgeons in Ireland [2019] IESC 4. This was applied to undermine reliance on late expert assertions (even on a de bene esse basis) where met by contrary sworn evidence.

E. Discretion and proportionality of certiorari

The Court treated discretion as an integral control on relief, relying on G. v. DPP [1994] 1 I.R. 374 and subsequent lines including Save Cork City Community Association CLG v. An Bord Pleanála [2022] IESC 52 and Ballyboden Tidy Towns Group v. An Bord Pleanála [2024] IESC 4.
A structured modern statement of discretion factors—substantial compliance, technicality, prejudice, public interest—was taken from Pat O'Donnell & Co. v. Dublin City Council [2026] IESC 36.
The “important constitutional or legal value” limit on discretion (“court not at large”) was addressed via Kelly v. Minister for Agriculture [2021] IESC 62 and Christian v. Dublin City Council [2012] IEHC 163 (as cited through Amariei v. Chief Appeals Officer [2026] IESC 22).

3.2 Legal Reasoning

A. Preliminary evidential rulings: affidavits as submissions; late expert critique

The Court drew a firm line between evidence and argument. A litigant affidavit heavily comprised of opinions, commentary, and legal submissions was treated as impermissible and/or of no weight; similarly, the “expert” materials were excluded or given no weight insofar as they advanced points not made during the planning process, or sought to convert JR into a technical merits trial. The Court’s approach reflects a broader concern: if objectors can hold back technical points during the administrative process and later deploy expert critique as a JR “ambush”, the planning system becomes unworkable.

B. Core Ground 1 (odour/noise): no misdirection; Article 6 is satisfied by standard compliance conditions

The applicants’ case depended on reading the Inspector’s comment—“operation is covered by EPA licence requirements and Uisce Éireann guidance”—as a legal error that odour was for the EPA and not a planning matter. Humphreys J. rejected that characterisation: the passage expressly contemplated the use of “standard conditions” (i.e., planning conditions) to address the issue.

The key interpretive move was the Court’s close reading of S.I. No. 787/2005:

Article 6 imposes (i) a “have regard” duty to Article 3, and (ii) a duty to include such conditions as may be necessary in the Board’s opinion to ensure the plant is “operated and maintained” to avoid odour/noise nuisance.
The Court held the applicants were “import[ing] additional duties that are not there”, and that Article 6 does not mandate prescriptive, bespoke odour conditions where the permission already incorporates the design/operational commitments by conditioning the development to comply with the lodged particulars (Condition 1).
As a matter of proof, the applicants did not demonstrate that Condition 1 failed to constitute the “such conditions” contemplated by Article 6, nor that no lawful decision-maker could treat the information as adequate.

A further, independently sufficient reason for refusing relief on this ground was procedural: the applicants did not raise the 2005 Regulations point during the planning process, offered no adequate explanation for that omission, and therefore could not fairly seek to nullify the decision on a technical statutory argument deployed only after the event.

C. Core Ground 2 (lighting): Condition 1 and the further information defined the operative lighting regime

The Court treated the “lighting impact on neighbouring properties” complaint as answered by the record when read holistically: Condition 1 incorporated the further information stating that (apart from emergencies) external site lighting would be off during normal unmanned night-time operation. The Court also identified the distinct treatment of lighting columns (emergency/manual use) and bollards (low-level, low-power), and held that the applicants did not discharge an evidential burden of showing non-consideration or a materially defective assessment.

Importantly, the Court refused to equate “not addressed under a discrete heading” with “not considered”. The Commission’s overall conclusion that the proposal would not seriously injure residential amenities, read with the incorporated materials, was sufficient in law.

D. Core Ground 3 (landscaping): superseded proposals and failure to join issue

The Court’s treatment of the landscaping ground has a practical “process discipline” message: where a permission is granted subject to an appeal-stage revised/alternative landscaping scheme (Condition 6), objectors cannot succeed by attacking an earlier, superseded version—particularly where they did not engage with the alternative proposal before the Commission.

On “reasons”, Humphreys J. held that the Inspector’s discussion of planting difficulty was not a central reason for refusal, and that the Commission’s divergence from the Inspector was explained by its reasoning on site selection/optimality and its acceptance of the developer’s updated material. The Court additionally treated the trees-based criticism as moot where the final permission was premised on the alternative landscaping solution.

E. Draft judgment procedure and confidentiality directions

Although not dispositive of the substantive grounds, Humphreys J. set out detailed operational directions regarding draft judgments under Practice Direction HC 137, including (i) strict limits on “draft comments” (errors/ambiguities, not reargument) and (ii) a strong statement that draft judgments are confidential and that confidentiality obligations are “an immediately effective direction of the court”, supported by comparative authority including Attorney General v. Crosland (No. 2) [2021] UKSC 58.

3.3 Impact

Planning JR will remain tightly record-based. The judgment reinforces that technical legal attacks and technical evidential critiques should, absent special circumstances, be ventilated in the planning process, not reserved for JR.
Operational environmental nuisances and overlapping regimes. The Court’s reading of the 2005 Regulations affirms that An Coimisiún Pleanála may satisfy Article 6 through standard “compliance with lodged particulars” conditions where the record contains commitments to comply with S.I. No. 787/2005, leaving enforcement/oversight to the EPA under Article 4 without treating planning jurisdiction as ousted.
Reasons challenges face a high bar. The judgment consolidates the modern Irish approach: reasons are assessed in context, may be found across the record, and need not take the form of submission-by-submission engagement.
Discretion/proportionality in environmental infrastructure cases. The Court’s discretionary analysis signals that even arguable technical errors may not justify quashing where the public interest in critical infrastructure (here, ending long-running raw sewage discharge) is powerful and alternative regulatory remedies exist.
Procedural takeaway for objectors. If a developer materially revises proposals at appeal stage, objectors who do not address the revised scheme may lose the ability to later claim that the Commission ignored defects said to arise from earlier iterations.

4) Complex Concepts Simplified

Judicial review vs merits appeal: Judicial review asks whether the decision was made lawfully (proper procedures, correct legal tests, rationality), not whether the court would have chosen the same outcome.
Certiorari: The quashing order. Even if an error is shown, certiorari is discretionary and may be refused where quashing would be disproportionate or contrary to compelling public interests.
“Have regard to” duties: A legal obligation to consider a factor, not necessarily to decide in any particular way. Here, Article 6 required the Commission to have regard to Article 3, but left the content of conditions to what is “necessary” in its opinion.
Reasons “in the record”: Irish planning law allows reasons to be gleaned from the decision plus contextual materials (e.g., the inspector’s report, the application documents, further information), not only from the Commission’s order.
Onus of proof and conflicting affidavits: The applicant must prove the facts entitling them to relief. Where evidence conflicts and there is no cross-examination, the court will generally not resolve the conflict in the applicant’s favour.

5) Conclusion

[2026] IEHC 434 is a robust application of Supreme Court guidance on planning judicial review: discipline in pleadings and process participation, record-based review, contextual reasons, and discretionary control of remedies.

Its clearest doctrinal contribution is the treatment of Article 6 of S.I. No. 787/2005: the Commission’s obligation is not a mandate for bespoke, narrative odour/noise conditioning in every case; it may lawfully be met through standard conditions incorporating the developer’s documented compliance commitments, particularly where objectors did not raise a focused technical objection during the planning process. The decision also highlights that JR is not a forum for late-stage technical “re-litigation” of evolving design packages—especially where objectors did not engage with the final, operative revised proposals.