Seamus O’Brien and Sons Builders (Castlebar) Limited is a family based construction company based in the west of Ireland. Our reputation for excellence is based on over 40 years of trade experience providing exceptional service and outstanding results while utilising cutting edge technology and methodologies. We specialise in one off homes, extensions and renovations of any size and complexity. We have also delivered a sizable portfolio of small and large scale commercial projects as well as residential developments, schools and other public projects. Our experience counts and coupled with our expert staff and outstanding team of tradesmen we are ready to deliver your project, no matter what size, to you, on time and on budget.