Enhanced Reasons Duty: Specific, Policy-Responsive Reasons Required When An Coimisiún Pleanála Departs from its Inspector on Height and Parking

Case
Parosi Developments Ltd v An Coimisiun Pleanala and Ors (Approved) [2026] IEHC 86
Court / Judge
High Court (Humphreys J.)
Date
16 February 2026
Area
Planning & Environment; judicial review under ss. 50, 50A, 50B Planning and Development Act 2000

1) Introduction

This judicial review concerned An Coimisiún Pleanála’s refusal (12 December 2024) of permission for a large hotel development at Briarhill Business Park, Galway—an eight-storey over-basement, 186-bedroom scheme on a vacant industrial estate site adjacent to the N6. Galway City Council had granted permission (subject to conditions) and, across three reports (25 November 2022, 5 December 2023, 5 November 2024), the Commission’s inspector repeatedly recommended a grant.

The central issue was not whether the Commission could disagree with its inspector, but whether it did so lawfully: the applicant alleged that the refusal failed to provide adequate reasons—particularly given the inspector’s detailed findings on (i) building height / design quality under the Galway City Development Plan 2023–2029 and the Galway City Urban Density and Building Height Study (2021) (“UDBHS”), and (ii) reduced car parking based on public transport accessibility and “performance-based” standards.

The case also engaged a severability argument: the Commission contended that even if some reasons were flawed, other reasons stood. The Court held the reasons were interlinked through the overarching question of accessibility/public transport, and thus not severable on the facts.

2) Summary of the Judgment

Humphreys J. granted certiorari, quashing the Commission’s refusal. The Court held that:

  • It is settled law that the Commission must give adequate reasons, and this duty is particularly acute where it departs from a reasoned earlier position of an institutional actor (planning authority or inspector).
  • On the facts, the Commission’s reasoning amounted to “assertion rather than legally sufficient reasoning” when contrasted with the inspector’s detailed, criteria-based assessments.
  • The Commission failed to meaningfully engage with key matters relied upon by the inspector, including the plan’s internal flexibility (notably s. 8.8), the non-sensitive receiving environment, and the inspector’s evidence-based analysis of public transport services relevant to car parking.
  • The refusal’s strands (height/urban design and car parking/public transport) were logically connected and therefore not severable.

The matter was remitted to the Commission, in principle to the point immediately after the inspector’s third report (5 November 2024), subject to any contrary submissions within the timetable set by the Court.

3) Analysis

3.1 Precedents Cited (and their Influence)

(A) The duty to give reasons in administrative/planning decisions

The Court grounded the “reasons” obligation in Supreme Court authority:

  • Connelly v. An Bord Pleanála [2018] IESC 31, [2021] 2 I.R. 752, [2018] 2 I.L.R.M. 45 (Clarke C.J.)
  • Balz v. An Bord Pleanála [2019] IESC 90, [2023] 3 I.R. 751, [2020] 1 I.L.R.M. 367 (O’Donnell J.)
  • Naisiúnta Léictreach Contraitheoir Éireann Coideachta Faoi Theorainn Ráthaoichta v. Labour Court & Ors. [2021] IESC 36, [2022] 3 I.R. 515, [2021] 2 I.L.R.M. 1

These cases support the proposition that “main reasons on main issues” must be given, and that what counts as a “main issue” can be assessed objectively by reference to the nature of the decision and the process.

(B) Enhanced reasons where the Commission departs from its inspector (or planning authority)

The judgment treated the inspector’s recommendation as elevating the matters in dispute into “main issues” requiring reasons. It relied on (inter alia):

  • Sherwin v. An Bord Pleanála [2023] IEHC 26, [2023] 1 JIC 2701
  • Crekav Trading GP Ltd v. An Bord Pleanála & Ors. [2020] IEHC 400
  • Clonres CLG v. An Bord Pleanála & Ors. [2021] IEHC 303
  • O'Donnell v. An Bord Pleanála [2023] IEHC 381
  • Killegland Estates Ltd v. Meath County Council [2023] IESC 39
  • Ventaway v. An Coimisiún Pleanála [2025] IEHC 406
  • Phelan Walsh v. An Bord Pleanála [2025] IEHC 533

The Commission itself accepted in submissions that, where it departs from its inspector, the standard is “meaningful engagement” (it cited Konisberry v. An Bord Pleanála [2024] IEHC 194, Morehart v An Bord Pleanála [2025] IEHC 418, and Walsh v An Bord Pleanála [2025] IEHC 533). Humphreys J. agreed with the principle—but held the Commission did not meet it on these facts.

(C) Severability: when errors in some reasons do (or do not) vitiate the decision

The Commission argued that its reasons were severable, citing:

  • Kennedy v. Law Society of Ireland (No. 3) [2001] IESC 35, [2002] 2 I.R. 458
  • Olakunori v. Minister for Justice and Equality [2016] IEHC 473
  • Murtagh v. An Bord Pleanála [2023] IEHC 345
  • Ironborn v. Dún Laoghaire-Rathdown County Council [2023] IEHC 477
  • S.M. & M.T.A. v. Minister for Justice [2024] IECA 145
  • B.D. v. International Protection Appeals Tribunal [2025] IESC 38
  • AAI Baneshane Ltd v. An Coimisiún Pleanála [2025] IEHC 641

Humphreys J. accepted the general severability doctrine but emphasised its limits. Where reasons are “interrelated by a logical, factual or legal cross-over” they cannot be treated as independent supports for the outcome. He drew on:

Applying that approach, the Court found the refusal’s “height/scale/mass” and “car parking/public transport” strands were connected by the single, overarching question of accessibility/public transport; thus, the stool’s “legs” were not independent.

(D) Development plan interpretation as a justiciable legal question

Although the application was framed primarily as a “reasons” challenge, the judgment engaged with development-plan interpretation and legal error using:

  • Sherwin v. An Bord Pleanála [2024] IESC 13
  • Attorney General (McGarry) v. Sligo County Council [1991] 1 I.R. 99, [1989] I.L.R.M. 768
  • Byrne v. Fingal County Council [2001] IEHC 141, [2001] 4 I.R. 565
  • Maye v. Sligo Borough Council [2007] IEHC 146, [2007] 4 I.R. 678
  • South-West Regional Shopping Centre Promotion Association Limited v. An Bord Pleanála [2016] IEHC 84
  • Wilson v. An Bord Pleanála [2025] IEHC 523

The key doctrinal point reiterated from Sherwin v. An Bord Pleanála [2024] IESC 13 was that misconstruing a development plan can be an error of law going to jurisdiction, and that plans are construed as ordinary public documents rather than as technical legislation.

(E) Fair procedures context (draft judgments) and confidentiality of drafts

While not central to the planning-law holding, the judgment contains an extended discussion on draft-judgment circulation and boundaries of legitimate engagement, citing:

  • O'Sullivan v. Health Service Executive [2023] IESC 11
  • O'Sullivan v. Sea Fisheries Protection Authority [2017] IESC 75, [2017] 3 I.R. 751, [2018] 1 I.L.R.M. 245
  • Attorney General v. Crosland (No. 2) [2021] UKSC 58, [2022] 1 W.L.R. 367

(F) Material alteration by condition

In discussing conditioning and “materially different” permissions, the Court referred to:

  • White v. Dublin City Council [2004] IESC 35, [2004] 1 I.R. 545, [2004] 2 I.L.R.M. 509

This was used to illustrate that whether a mid-process change is impermissible depends on whether it introduces a real planning issue affecting participation (as in an “overlooking issue” emerging late), not merely on the abstract fact of change.

3.2 Legal Reasoning

(1) What the Commission decided—and why that mattered for reasons

The refusal relied principally on two substantive themes:

  • Height/scale/mass: the Commission characterised the location as an “outer suburban area” with a “prevailing two-three storey” pattern, treated the eight-storey proposal as a “fundamental departure,” and stated it did not share the inspector’s view that “exceptional design quality” had been demonstrated.
  • Car parking/public transport: the Commission stated it did not share the inspector’s view that the site was sufficiently well serviced by public transport to justify reduced parking below the development plan standards.

Humphreys J. rejected the Commission’s attempt to recast the order as having multiple additional “reasons” (including viability/material alteration) as stand-alone refusal grounds. The Court held those remarks were, properly understood, reasons for not “saving” the scheme by further conditioning (i.e., reducing height further), not independent bases for refusal.

(2) Non-severability: accessibility linked the “height” and “parking” reasons

The Court’s severability analysis is practical and fact-sensitive: because the Commission’s assessment of site accessibility/public transport permeated both height acceptability (policy justification for taller buildings) and the car parking departure, an inadequately reasoned finding on accessibility undermined the overall decision structure.

(3) The Commission’s failure of “meaningful engagement” with the inspector

The inspector’s reports contained detailed, criteria-based findings, including:

  • Frequent bus services (routes 401 and 409) with stated frequencies and hours, supported by timetables.
  • A conclusion that the site was not in a sensitive receiving environment (not in a protected landscape/conservation area), and the context included other taller hotels and a permitted seven-storey scheme nearby.
  • Engagement with the UDBHS criteria (s. 20.5) and the development plan’s express statement that height ranges are guides, not absolutes (s. 8.8).
  • A performance-based approach to car parking consistent with the plan and National Planning Framework (“NPF”) tolerances.

Against that backdrop, the Court held the Commission’s reasoning was too generic—relying on formulaic expressions (“mass, scale and form”) and bare disagreement (“did not share the Inspector’s view”) without grappling with the inspector’s specific evidential and policy analysis.

(4) The plan’s internal flexibility (s. 8.8) as a “main issue” once relied upon by the inspector

A central feature of the judgment is the Court’s focus on what the Commission did not do: it did not address the development plan’s own qualification that the UDBHS ranges are “a guide” and “not absolute measures,” and that heights “lower or higher” may be appropriate “when assessed against other relevant policy and guidance.”

The Court drew an important distinction with AAI Baneshane Ltd v. An Coimisiún Pleanála [2025] IEHC 641. It accepted that a decision-maker is not generally required to give reasons for not invoking a discretionary “exception.” But it held this cannot be overgeneralised where:

  • the plan itself contains an express flexibility clause; and
  • an institutional actor (the inspector) has made that flexibility decisive to a recommendation; therefore, it becomes objectively a “main issue” requiring reasons if rejected.

(5) Mischaracterisation of the site as within the “outer suburban area”

The inspector had been careful: the site fell outside the mapped neighbourhood boundaries and was “most closely aligned” to outer suburbs. The Commission’s order asserted it was an “outer suburban area” and applied the two-three storey “prevailing” character as if dispositive. Humphreys J. held that the distinction was not meaningless: formal non-application of the mapped area criteria could increase flexibility, and the Commission gave no reasoned explanation for treating the area policy as determinative regardless.

(6) Car parking: failure to engage with performance-based standards and the inspector’s transport evidence

The inspector explicitly invoked the NPF approach that car parking standards in urban areas should be performance-based and subject to tolerances (mirrored in the development plan). He examined the actual service levels of routes 401 and 409. The Commission rejected the conclusion but did not explain, in a way that engaged with that evidence and policy architecture, why those services were insufficient or why tolerances should not apply.

3.3 Impact

  • Reinforced “meaningful engagement” standard with teeth: the case illustrates that generic disagreement will not suffice where the inspector has produced detailed, criteria-based reasoning on the very issues that determine the outcome.
  • Elevates plan flexibility clauses into “main issues” when they do real work in the process: where an inspector relies on an internal plan “guide/not absolute” clause (here, s. 8.8) to justify a departure, a refusal must explain why that flexibility is not engaged on the facts.
  • Practical warning on severability arguments: decision-makers (and litigants) must assess whether reasons are genuinely independent. If height, parking and location are bound together by accessibility/public transport, an inadequately reasoned finding on that common element may destabilise the entire decision.
  • Drafting of Commission orders: the judgment signals judicial scepticism toward post hoc “reprogramming” of reasons in litigation; the contemporaneous structure and content of the order will be treated as a reliable indicator of what the Commission’s real reasons were.

4) Complex Concepts Simplified

  • Certiorari: the court order quashing an unlawful administrative decision (here, the refusal of permission).
  • Remittal: sending the matter back to the decision-maker to decide again lawfully (here, back to the Commission, to a specified point in the process).
  • “Main reasons on main issues”: a decision must explain the key grounds that actually drove the outcome, especially on contested, outcome-determinative points.
  • “Meaningful engagement” with an inspector: if the Commission rejects an inspector’s recommendation, it must do more than state disagreement; it must explain why the inspector’s reasoning is not accepted, in a way that addresses the substance.
  • Severability: if a decision has multiple independent reasons, one flawed reason may not invalidate the decision. But if the reasons are connected (e.g., by a shared assumption like accessibility), an error in one can undermine the whole.
  • Performance-based parking standards: parking is not always a rigid numbers game; policies may permit departures where accessibility, transport options, and design outcomes justify it.

5) Conclusion

Parosi Developments Ltd v An Coimisiun Pleanala and Ors (Approved) [2026] IEHC 86 is a fact-driven but significant reaffirmation of a core control on planning appeals: when An Coimisiún Pleanála departs from a detailed inspector recommendation on determinative issues (height/design policy application and car parking justified by public transport), it must provide reasons that are specific, evidence-responsive, and policy-aware. Bare assertions and formulaic phrases—especially where a development plan itself contains structured flexibility—will not satisfy the enhanced duty to give reasons, and interlinked reasons cannot be rescued by severability if they share the same unreasoned foundation.