Ranked by Google ratings — updated 2026
John Halligan Architects
Charlestown
John Lambe Architects & Engineers
Westport
BK Engineering Design
Ballyhaunis
SDS (Structural Design Solutions) Ltd
Castlebar
Keith O'Connell Chartered Engineer Ltd.
Westport
Proconex Limited
Source N Build Limited
Roddy Heritage & Design Limited
P&D Lydon
Cross
RODDY AT
Westport
David O'Malley & Associates
Castlebar
Waldron & Associates
Claremorris
Taylor McCarney Architects
Castlebar
Grady Architects
Westport
Broderick Architects
Claremorris
John Madden & Sons Limited
Ballinrobe
OSENG
Claremorris
KAP Eco Homes
Cox Power & Associates
Westport
Maloney Group
Ballina
ACT
Ballina
OMD Design Ltd.
Laughtawanagh
Axo Architects Ltd
Castlebar
Sean Holohan Energy Limited
Coleman Architects
Ballina
Corrib Ber Limited
Patrick Mills Engineering Services Limited
Tagus Engineering Services Limited
Micheál Sheridan Engineering & Design Limited
Westport
Simon Beale + Associates - Architecture, Engineering & Management Consultants is currently the top-rated architecture & engineering in Co. Mayo, with 4.9 stars from 11 Google ratings. See the full ranked list above.
Businesses are ranked by average customer rating, then by how many ratings they have. We use reviews left on LocallyIrish.ie where a business has them, and otherwise its Google rating, which is shown and labelled on each entry.
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