Ask what actually decides modern planning judicial reviews and one answer recurs: screening — the gateway determination of whether a project needs environmental impact assessment, or appropriate assessment for European sites. It keeps deciding cases for a structural reason: the obligation is procedural, front-loaded, and binary on the record.
Why This Ground Is Different
Most disappointed parties want to argue merits — and merits complaints fail in JR, because the court doesn’t re-judge density or design. Screening is different in kind: EU law requires the examination to happen before consent, properly, on defined criteria, with reasons a reader can follow — and the record either demonstrates that or it doesn’t. No deference rescues a determination that wasn’t made, engaged the wrong criteria, or excluded significant effects without followable reasoning; and the courts — Irish and European — have been exacting for years. The recurring vulnerable patterns: the assumed screening — no actual determination on the file; salami-slicing — phases walked under thresholds that the cumulative project plainly crosses, the pattern courts see through fastest; the untraced pathway — the drainage to the European site downstream that nobody followed source-to-receptor; mitigation at the gate — leaned on at screening stage in ways the case law confines; and the stale survey — ecology assessed out of season or out of date. Each is checkable on documents — which is what makes this ground disciplined rather than speculative, in either chair.
Both Chairs, Same Ground
For objectors, the ground works at every stage, and earliest is strongest: the environmental point made specifically in the five-week submission — the named site, the actual pathway, the identified survey gap — forces the record to answer it, builds the participation thread standing rests on, and outweighs a hundred template paragraphs; developed on appeal, it gets inspector-level engagement; and at judicial review, the defective record meets the environmental costs-protection framework rooted in EU law and Aarhus — assessed case by case, and genuinely protective where it applies. For developers, the same list read in reverse is the cheapest insurance in Irish planning: screen demonstrably and in writing, scope the project as what it cumulatively is, respect the mitigation discipline, commission ecology for the judge who may read it, participate generously — the heart of JR-proofing, bought before lodgement or not at all. And behind both chairs, the absolute stake: assessment-class development cannot be cured by ordinary retention — the door the case law closed — which is why “which world is this project in” is the first question on the environmental page, and the first question here.
The one-line version of the whole topic: screening cases aren’t won by loving nature or lost by ignoring it — they’re won and lost on whether a documented examination, done right and reasoned, exists on the file. Check the file.
A record to test — or a record to build? The documents read against the standard: 01 5827148.