Principal Construction | 305 followers on LinkedIn. Consistency • Reliability • Dedication • Co-operation • Delivering quality construction projects since 1999 | WHO WE ARE Principal Construction Limited was established in 1999 by Niall Daly and Peter Mahon, both with over 20 years experience in the construction industry. All members of our management team are qualified to at least B.Sc Honors level in their respective fields of expertise, with a number holding MSc degrees in Construction Project Management, Construction Economics and Architecture What makes us stand apart from our competitors is the quality of our workmanship. We invest heavily in training and development with all personnel participating in continuous learning / educational programs to ensure that our technical and management teams are fully up to speed on all the latest developments in the construction industry.