| Concerned Residents of Treascon and Clondoolusk v. An Bord Pleanála & Ors. [2024] IESC 28 | Leave permits pursuit of identified legal errors, not new grounds. | The proposed questions were outside the pleaded case. [43][44][45] |
| Doyle v. An Coimisiún Pleanála [2026] IESCDET 123 | Appeal questions must arise from the lower-court judgment and not be abstract. | The Applicant's formulations were open-ended and untethered to the judgment. [44][46][47][48] |
| Leech v. An Bord Pleanála [2025] IESCDET 106 | Pleading disputes and case-specific application of principles generally do not raise public-importance questions. | The pleading issues did not establish a suitable point of law. [49][50] |
| Minister for Justice and Equality v. Andrzejczak (No. 2) [2018] IEHC 11 | A question must arise on the facts and not be abstract. | The proposed questions lacked the necessary factual foundation. [51] |
| GOCE Limited v. An Bord Pleanála [2025] IEHC 43 | A proposed question must actually have been argued and not be newly formulated on appeal. | The Applicant altered its case after the substantive hearing. [52] |
| S.A. v. Minister for Justice and Equality (No. 2) [2016] IEHC 646 | The question should be determinative, timely, specific, and legally focused. | The proposed questions would not alter the result and invited a roving answer. [53][54][55] |
| Rooney v. Minister for Agriculture and Food [2016] IESC 1 | Appeal procedure should not become perpetual litigation focused on isolated points. | The Court rejected continuation based on interesting but non-determinative issues. [53] |
| Monkstown Road Residents Association v. An Bord Pleanála [2023] IEHC 9 | A question must accurately reflect the judgment and not exaggerate it. | The Applicant mischaracterised the judgment. [56][38] |
| B.S. v. Director of Public Prosecutions [2017] IESCDET 134 | Questions applying established law to facts are generally mixed questions, not pure questions of law. | The proposed matters were unsuitable for appeal. [57] |
| Halpin v. An Bord Pleanála [2020] IEHC 218 | Application of legal principles to facts is generally not a pure legal question. | The Court applied this distinction to the proposed appeal. [57] |
| Rushe v. An Bord Pleanála [2020] IEHC 429 | Mixed fact-and-law questions are generally unsuitable in this context. | The proposed questions did not satisfy the legal-question requirement. [57] |
| Stanley v. An Bord Pleanála [2022] IEHC 671 | Same principle concerning factual application of law. | The questions did not identify an independent legal issue. [57] |
| Eco Advocacy CLG v. An Bord Pleanála [2024] IESCDET 62 | Mixed questions and project-specific issues are generally unsuitable. | The proposed issues remained case-specific. [57][58] |
| Patrick McCaffrey & Sons Limited v. An Bord Pleanála [2024] IESCDET 145 | A public-importance question must transcend the facts of the particular case. | The Applicant's questions were tied to its own pleadings and facts. [50] |
| Ógalas v. An Bord Pleanála [2015] IEHC 205 | An appeal may be warranted to resolve genuine legal doubt. | No genuine doubt was demonstrated. [59] |
| Nagle View Turbine Aware Group v. An Bord Pleanála (No. 2) [2025] IEHC 3 | An appeal is generally unwarranted where the law is not uncertain. | The Court found the relevant law clear. [59] |
| Nagle View Turbine Aware v. An Bord Pleanála [2025] IESCDET 41 | An application must engage with the reasoning of the judgment. | The Applicant did not identify a plausible error in the reasoning. [60] |
| Stapleton v. An Bord Pleanála [2025] IEHC 178 | Novelty or official status does not itself make a question suitable for appeal. | Novelty did not establish uncertainty or exceptional importance. [56][61][62][63] |
| Callaghan v. An Bord Pleanála [2015] IEHC 493 | Novelty alone does not establish suitability for appeal. | The Applicant's novel interpretation did not create legal uncertainty. [64][65] |
| Carrownagowan Concern Group v. An Bord Pleanála [2025] IESCDET 8 and [2025] IESCDET 9 | A CJEU-reference request does not cure an abstract or unsuitable question. | The proposed EU-law questions remained unsuitable. [66] |
| Doyle v. An Coimisiún Pleanála [2026] IESCDET 123 | The restricted appeal route is not itself exceptional. | The statutory procedure did not establish exceptionality. [67][68] |
| Cork Harbour Alliance for a Safe Environment v. An Bord Pleanála [2022] IEHC 231 | Planning judicial review prioritises finality, certainty, and expedition. | These objectives weighed against an appeal. [58] |
| Dunnes Stores v. An Bord Pleanála [2015] IEHC 387 | Project nature and delay are relevant to public interest. | Delay to the housing development weighed against leave. [58][69] |
| Phoenix Rock Enterprises v. An Bord Pleanála & Ors. [2023] IESCDET 97 | Assertions of practical difficulty require evidence. | No evidence established systemic practical problems. [70] |
| Colbeam v DLRCC & Jennings [2026] IEHC 613 | Judicial notice may be possible, but normally positive evidence is required. | Mere assertion of practical problems was insufficient. [71] |
| Rural Residents Wind Aware and Environmental Group v An Coimisiún Pleanála [No. 3] [2026] IEHC 300 | Leave questions must not be open-ended or recast unpleaded arguments. | The Applicant's first question was impermissibly reformulated. [35][36] |
| Heather Hill Management Co. CLG v An Bord Pleanála [2022] IESC 43 | Statutory interpretation may require attention to context and purpose. | The Court held that it had applied contextual and purposive interpretation. [72][73] |
| Redwood Extended Care Facility v. Tailte Éireann [2026] IESC 3 | Relevant principles of statutory interpretation. | The judgment was said to have applied this authority. [72][74] |
| Raoul Thybaut and Others v Région wallonne, C-160/17 | SEA concerns plans and programmes, not individual projects. | The Court relied on this principle in rejecting the proposed SEA question. [75] |
| Site de St Teresa's Gardens, C-09/22 | Jurisprudence concerning plans or programmes derogating from other assessed plans or programmes. | The Court distinguished that principle from individual project permissions. [76][77] |
| YY v Minister for Justice and Equality (No. 2) [2017] IEHC 185 | Obiter comments cannot ordinarily provide the basis for a certification question. | The SEA discussion was treated as obiter and non-determinative. [39] |
| Commission v. Netherlands, Case C-339/87 | Inadequate transposition may arise where domestic powers conflict with a directive. | The State Respondents said the case was irrelevant because no such failure existed. [34] |
| Minister for Justice v Workplace Relations Commission, Case 378/17 | National courts may need to disapply conflicting national legislation. | The authority was relied on in the pleaded case, but did not establish a certifiable question. [78] |
| Glancré Teoranta v An Bord Pleanála [2006] IEHC 250 | Most planning cases are intended to be determined in the High Court, with appeals exceptional. | This supported refusal where an appeal would cause further delay. [40] |
| Massey v An Bord Pleanála (No.4) [2025] IEHC 309 | Delay and the nature of a development bear on public interest. | The Court endorsed the notice party's reliance on these considerations. [79] |
| McNamara v An Bord Pleanála [1998] 3 IR 453 | Raised an issue concerning jurisdiction to make a CJEU reference after final judgment. | The Notice Party relied on it in opposing a reference. [80] |
| Grace & Anor v An Bord Pleanála [2015] IEHC 870 | Relevant to the availability of a CJEU reference in a certificate application. | The Notice Party relied on it to contend that the reference request was misconceived. [80] |
| Persidera, Case C-112/16 | A preliminary reference is inappropriate where the issue is hypothetical. | The Commission relied on it against the proposed reference. [81] |
| Van der Weerd, Case C-222/05 | References must concern questions necessary to decide the case. | The Commission relied on it against a hypothetical reference. [81] |
| Friends of the Irish Environment v. An Coimisiún Pleanála (No. 2) [2026] IEHC 413 | Illustrative use of the conditional answer “If” where the premise is not established. | The Court used the formulation to explain why the transposition question did not arise. [82][83] |