Patrick Reilly | Fieldfisher
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Professional background

Professional background

I advise public bodies in relation to all aspects of their functions, including providing strategic advices on licensing and enforcement functions, freedom of information and planning decision functions, prosecutions and litigation including judicial review and appeals in the Superior Courts.

I have worked on high profile planning judicial review proceedings and regularly advise on and prepare prosecutions in respect of environmental offences, including breaches of various statutory provisions in national and European environmental legislation. I have also assisted with implementing financial provision for environmental liabilities arising from the closure of mines, waste transfer stations and pharma plants.
 
I hold an Advanced Diploma in Planning and Environmental Law from the Honourable Society of King's Inns, and lecture part-time, teaching Planning and Environmental law to undergraduates.
 

Authored pieces

All Resources
Construction site featuring two large cranes and an unfinished multi-story building under a colorful dusk sky. The background displays a cityscape with various buildings illuminated by the transitioning evening light, creating a blend of urban progress and twilight hues.
Planning and Environmental
Insight

Hibernia Real Estate Group Limited v Dun Laoghaire-Rathdown County Council [2026] IEHC 141

30.06.2026
The Definition of a “House” under Section 2 of the Planning and Development Act 2000 This case concerned the interpretation of the term “house” within the meaning of section 2 of the Planning and Development Act 2000 as amended (“the 2000 Act”). The trial Judge, Ms Justice Farrell observed that the proceedings provide a clear illustration of the difference between the ordinary meaning of a commonly understood word, and its meaning in statute.
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A small paper boat made from a five Euro banknote rests on a piece of ice. The background displays a cold, icy landscape with various ice formations and a frozen water body. The scene highlights the contrast between the colorful banknote and the icy environment.
Planning and Environmental
Insight

Advocate General gives Opinion on Water Framework Directive

12.10.2023
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Two people wearing light blue shirts are reviewing architectural blueprints on a table in a brightly lit room. One person is pointing at the blueprints with a pen, while the other rests their hands on the table. A laptop is visible to one side.
Planning and Environmental
Insight

Eco-Advocacy v An Bord Pleanála

24.08.2023
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A construction site featuring the skeletal framework of a building with multiple concrete columns and beams. Visible are cranes, construction materials, and equipment. The sky is partly cloudy, and workers are present in the background.
Insight

Waltham Abbey RA v An Bord Pleanála & Ors [2022] IESC 30

08.09.2022
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Press Release

Fieldfisher Ireland supports Sazerac on acquisition of Sligo’s Lough Gill Distillery

29.06.2022
New Orleans-headquartered Sazerac has acquired Irish company Hazelwood Demesne Limited to add Lough Gill Distillery whiskey to its portfolio of world-class beverage products.
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