Dublin Landings

Engineering Excellence

Designing for Technical and Commercial Certainty in Mechanical and Electrical Systems since 1956.

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Recent Projects


Dublin Landings

Dublin Landings Client: Ballymore Group Architect: RKD Architects Arrow Architects Project Status: Completed [...]


70 St Stephens Green

70 St Stephens Green Client: Irish Life  Architect: Wejchert Architects Project Status: Completed [...]


Shanganagh Castle Residential Scheme

Shanganagh Castle Residential Scheme Client: Land Development Agency (LDA) / Dún Laoghaire-Rathdown County Council Architect: ABK Architects [...]

About Us

Homan O’Brien was formed in 1990 by the amalgamation of two long established consulting engineering practices, Robert Jacob and Partners (1955) and Seamus Homan Associates (1978).

Since its foundation, the practice has become firmly established for the excellence of its design concepts coupled with its committed policy of value for money engineering solutions.

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Drogheda Courthouse

Get in Touch

Email us or give us a call at our office in Booterstown.

We are always happy to discuss your projects and proposals and look forward to hearing from you

Main Office: +353 1 205 6300
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The Rediscovery Centre

Sustainable Engineering Design Solutions

Homan O’Brien are recognised as pioneers in Sustainable Engineering Design Solutions in Ireland over the last 20 years and have achieved a number of notable firsts in Irish Engineering.

Homan O’Brien designed from first principles the first Ice Bank Thermal Storage System in Ireland in Beresford Court in 1992, the concept of which has been copied ever since.


We are affiliated to a number of professional bodies including Engineers Ireland, Association of Consulting Engineers of Ireland, Chartered Institution of Building Services Engineers, American Society of Heating, Refrigeration and Air-Conditioning Engineers, Institute of Healthcare Engineers and Estate Managers and the European Federation of National Engineering Associations.

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The practice is renowned for pioneering innovative design solutions which is reflected in the numerous awards achieved to date.

We have achieved formal certification for ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 Occupational H&S Management System