Summary of Judgment — Anonymised

Factual and Procedural Background

The Plaintiff sought judicial review of a planning decision under sections 50, 50A and 50B of the Planning and Development Act 2000. The planning application related to a renewable energy project which, after inspection, was approved by the inspector and the planning authority. The High Court (Judge Humphreys) delivered principal judgments on 6 November 2025 and 6 March 2026 and heard a leave-to-appeal application on 29 April 2026. A draft of the present judgment was circulated to parties on 11 May 2026 for limited, non-substantive comments. The Plaintiff now seeks a certificate/leave to appeal to the appellate court. The Developer (notice party) and the planning authority opposed the application. The High Court reserved judgment and subsequently refused the application for leave to appeal.

Legal Issues Presented

1. Whether a court may, absent hearing evidence on noise, conclude that noise at a dwelling 886m from turbines is "not likely to be significantly more intrusive than a washing machine at a less vigorous stage of its cycle" (as posed by the Plaintiff).
2. Whether there is any conflict between jurisprudence assessing predicted effects at the consent stage and jurisprudence in nuisance cases (and which approach governs assessment of wind turbine noise).
3. Whether planning permission for an SID granted in respect of third-party lands without the landowner's consent is void ab initio and whether a later statutory amendment (s.146B) can cure such invalidity.
4. What obligation the planning authority has under s.37G(2) to consider information furnished under s.37F(1) where submissions relate to persons with enhanced sensitivities.
5. The relationship between a standard Condition 1 in a planning permission and other conditions — whether there is a primary obligation to complete development in accordance with submitted plans regardless of conditions.
6. How to assess, within Art. 3(1) of the EIA Directive, direct and indirect significant effects on population and human health where the "public concerned" includes persons with special sensitivities (e.g., to visual/aural stimuli).
7. How public policy determines the "sort of impact" that precludes permission where decision‑makers were on notice of hypersensitivity of a member of the public, and whether that corresponds to tort‑actionable impacts.

Arguments of the Parties

Plaintiff's Arguments

• The observations in the principal judgment about distance and the washing-machine analogy were improperly reached without evidence and are substantive findings open to appellate scrutiny.
• There is an alleged conflict between consenting-stage jurisprudence and nuisance jurisprudence that raises important legal questions about how turbine noise should be assessed.
• The Plaintiff asserted that procedural and substantive errors arise in relation to consent on third‑party lands and in the treatment of submissions from persons with enhanced sensitivities.
• The Plaintiff sought certification on seven points said to be of exceptional public importance, including EU law/EIA Directive aspects.

Defendant's (Planning Authority) Arguments

• The principal judgment merely applied established Supreme Court principles concerning judicial review (legality not correctness; separation of powers; standards of review; reasons; onus on applicant; discretionary relief).
• The "obiter" comparison about distance and washing‑machine noise was illustrative and not evidential; the Commission had considered noise evidence and concluded no significant effect.
• The s.146B/third‑party‑land point was moot because any minor error had been resolved and the issue was fact‑specific.
• The Plaintiff did not plead or argue an enhanced duty in relation to persons with heightened sensitivities; no novel obligation exists in EU or domestic law to require bespoke assessments for particular individuals.
• The purported questions are fact‑specific, not pure points of law, not of exceptional public importance, and therefore unsuitable for certification; no meaningful EU law doubt was shown.

Company A (Developer / Notice Party) Arguments

• The Developer's evidence on noise impacts was before the inspector and the Commission and was uncontroverted; the Commission accepted there would be no significant effect.
• There is no conflict in the case law relied upon by the Plaintiff; consent-stage assessment differs from nuisance adjudication of actual effects.
• Any assertion that permission "sterilises" land or creates widespread uncertainty is speculative and unsupported by evidence; statutory provisions limit the effect of permission.
• The public interest favours refusing leave because further delay would prejudice the public interest in renewable energy and cause non‑compensatable developer prejudice.

Table of Precedents Cited

Court's Reasoning and Analysis

Judge Humphreys analysed the certificate application against the statutory and well‑established criteria for leave to appeal. The court proceeded by reference to settled Supreme Court principles: judicial review reviews legality not correctness; courts must respect separation of powers; evaluative planning judgments attract a deferential irrationality standard; reasons need only address main issues and may be found in related materials (eg. inspector's report); the onus lies on the applicant; and relief is discretionary and should not be granted for hypothetical or academic points.

Applying those principles the court concluded:

• Many of the Plaintiff's proposed questions "do not properly arise" because they mischaracterise the judgment, are premised on false factual premises, are moot (resolved by subsequent developments), or were not pleaded at trial.
• The paragraph in the principal judgment comparing distance/noise to an urban reference and a washing‑machine was an obiter contextualisation, grounded in publicly available material and not a substituted assessment; the noise evidence had been before the inspector and Commission and was not impugned.
• The alleged conflict between consenting‑stage jurisprudence and nuisance jurisprudence is illusory: the two concern different stages (predicted impacts at consent stage v actual effects in operation) and do not create a legal contradiction requiring appellate resolution.
• The third‑party‑lands / s.146B point was moot or fact‑specific and therefore unsuitable for certification; any asserted curative effect was not treated as an error the court refused to remedy but as an issue left open for resolution where relevant facts required it.
• Claims seeking an elevated or bespoke EIA duty for particular individuals (eg. persons with special sensitivities) were unpleaded, procedurally inappropriate, legally novel without supporting authority, and in substance an impermissible ius tertii.
• The proposed points were largely essayistic, mixed fact/law, fact‑specific and not pure points of law of exceptional public importance; no convincing EU law doubt or foreign authority was produced to justify a reference to the CJEU.
• On public interest, the court emphasised statutory aims of finality and expedition in planning judicial review, the significant public interest in timely renewable energy infrastructure, and the absence of evidence of systemic uncertainty; these factors militated strongly against granting leave.

Holding and Implications

HOLDING: The application for leave to appeal is DISMISSED.

Implications:

• The High Court's refusal of leave to appeal stands; the substantive proceedings are dismissed as ordered in the earlier judgments and the present application for a certificate is refused.
• Costs: if leapfrog leave is later granted and the Supreme Court accedes, the costs of the leave application will be costs in that appeal; otherwise there is no order as to costs for the leave application, and no order as to costs for the substantive proceedings as already pronounced.
• The decision does not announce novel legal principles; it applies established authorities to the facts and does not create new precedent beyond applying settled law to the particulars of this case.