The following are the results of the Architectural Association of Ireland's AAI Awards 2005 – the 20th in this series of annual awards for excellence in architectural design – which were adjudicated on Friday 10 December 2004.

The Downes Bronze Medal may be awarded at the discretion of the Assessors. This year, the jury awarded the Downes Bronze Medal to: (HOUSE AT) Alma Lane, South Dublin — Boyd Cody Architects

The maximum number of AAI Awards is seven. This year the jury selected 3 projects for Awards. They are (in alphabetical order by architect):
(HOUSE AT) Wellington Road, Dublin 4 — Boyd Cody Architects
Youth and community Centre, Donore Avenue, Dublin 8 — Henchion + Reuter Architects
Peabody Housing, Silvertown, London E16 — Niall McLaughlin Architects

A number of entries may be selected for Special Mention. This year the jury selected 9 projects for Special Mention. They are (in alphabetical order by architect):
Refurbishment of Car Park, Drury Street, Dublin 2 — Robert Payne, Naomi Lloyd, Cullen Payne Architects
Connemara BoatHouse, Moyard, Co Galway — Agata Falat, Michael Cullinan, MV Cullinan Architects
DUBCO Credit Union, Little Green Street, Dublin 2 — Donnelly Turpin Architects
Finglas Swimming Pool and leisure Centre, Mellowes Park, Dublin 11 — Donnelly Turpin Architects
House at Dirk Cove, Clonakilty, Co Cork — Niall McLaughlin Architects
Houseboat — Niall McLaughlin Architects
Vehicular and Pedestrian Bridge, University of Limerick — Hugh Kelly, Murray O'Laoire Architects / Adrian Duffy, Arup Consulting Engineers
Lewis Glucksman Gallery, University College Cork — O'Donnell + Tuomey Architects
Ireland's Pavilion at the Venice Biennale, Arsenale, Venice — O'Donnell + Tuomey Architects