074 910 3888

We’re a highly collaborative and supportive team, coming together on every project to ensure our clients get the very best result.

Our Mission

Build the best projects that creates the most value for our customers, use business to inspire and implement high quality solutions.

Our Values

We strive to go above and beyond for our clients no matter the challenge. We aim to deliver our very best work every single day across our services.

We build to last

Quality is at the heart of everything we do.

Our Story

MDT Construction (McDermott and Trearty Construction ltd.) was founded in 2004 with the aim of developing the north west of Ireland. Our organisation is headed by the three directors with a combined 60 years of experience in the construction industry. Over the last 18 years we have worked on a number of significant projects all across Ireland. These projects include but are not limited to schools, hospitals, sports facilities, housing and the regeneration of listed buildings.

MDT Construction (Mc Dermott and Trearty) is a family owned construction firm based in the North-West of Ireland.






Contact Us

6A Beechwood Avenue, Letterkenny, Co. Donegal

+353 (74) 910 3888