John J. O’Connell Architects is an RIAI accredited Conservation Practice Grade 1

The practice was established in 1978 by John J. O’Connell, a fellow of the Royal Institute of Architects Ireland since 1993.

The practice is run by John J O'Connell and Colin McCabe. John and Colin have worked together for over 15 years.


The practice has gained considerable experience in conservation within a wide range of building types including museums, commercial developments and high profile residences, with clients from both the public and private sectors.


The practice places a considered emphasis on both energy conservation and sustainability of materials. Through our work with museums, and other public buildings we have a high level of experience working with the most up to date lighting and environmental controls. We place particular care to ensure that these latest technologies are seamlessly integrated into both new build and historic buildings.

Professional Awards:

  • 2014: Hudson Heritage Awards: Best Wedding Venue: The Carriage Rooms at Montalto – Winner.
  • 2013: Royal Institute of Chartered Surveyors Award for Building Conservation: The Carriage Rooms at Montalto, Co. Down – Shortlisted.
  • 2012: ALCI Landscape Award for Best Commercial and Public Authority Landscape over £50,000.00.: The Carriage Rooms at Montalto, Co. Down – Winner
  • 2012: Irish Georgian Society Conservation Award: Fota C19th Glasshouses Restoration, Co. Cork – Winner.
  • 2012: Irish Georgian Society Conservation Award: The Bishop’s Palace Museum, Waterford – Shortlisted
  • 2012: RIAI Conservation Award and Public Choice Award: Fota C19th Glasshouses Restoration, Co. Cork – Shortlisted
  • 2011: Irish Georgian Society Conservation Award: Fota House, Co. Cork – Shortlisted
  • 2011: RIAI Silver Medal Conservation Award: Aula Maxima, UCC, Cork – Shortlisted.
  • 2010: Irish Georgian Society Conservation Award: Kilmainham Congregational Church, Dublin – Second Place
  • 2009: RIAI Architecture Awards: Rubrics Building, Trinity College Dublin – Exhibition Status.
  • 1983: RIAI Silver Award for Architectural Conservation: Fota House, Co. Cork – Winner