You're building a legacy.

You want to build spaces with minimal environmental footprint that are healthy throughout their life cycles. You need a contractor that shares your goals. That’s why mac has been chosen to deliver 8 large construction and fit out projects to LEED and BREEAM certifications, 2 of which have achieved PLATINUM – the highest rating the USGBC has to give.  We know that green building is an iterative process of continual improvement through design, planning, construction and operations practices.  That’s why we have a designated in-house LEED AP and WELL AP and we finance LEED certification for all employees.

Katsiaryna Mazur


Environmental Manager

At any moment on site we are conscious of how our local and even tiniest of actions and choices impact global environment and humanity, how we are contributing to scaling from green buildings and healthy environments to smart and green cities:

  • ISO 14001 accredited environmental management system
  • Samson subcontractor pre-qualification process
  • European transition to circular economy.
  • By delivering LEED, WELL and BREEAM projects, not only we facilitate Ireland’s progress towards low-carbon economy in the long run, we help our clients to achieve measurable life-cycle economies of energy and water, produce healthy and comfortable spaces which boost productivity and prosperity for businesses and individuals.


LEED Projects Delivered:

Citi, Belfast – LEED Gold

Oracle Block B – LEED Platinum

Swansea University – BREEAM Very Good

Brown Brothers Harriman– LEED Gold

Aercap – LEED Platinum

BMS  LEED Silver

Irish Life, I George’s Quay – LEED Platinum

In progress:

River House, Belfast – BREAM Very Good

Oracle Block A – Platinum Platinum


mac’s Dublin office employees currently represent as much as 20% of LEED professionals in the whole Irish green building industry. You, the environmentally responsible construction professional, are pursuing the goal of advancing spaces that both have minimal environmental footprint and are healthy environments throughout their life-cycle. Your choice of contractor allows you to achieve this goal, and deliver spaces where you want to be, from the very first day of construction to years ahead.

A building, as a system, is something larger than the sum of its parts put together. Every building, every interior is part of a larger interplay of technology, innovation, psychology, economy and socio-ecological systems.

Approaching construction and fit-out as both a technological and artistic process, we conceive and manage construction sites that are not – aesthetically, ecologically, health-wise – a disruption to the surrounding life, but, on the contrary, are a safe, beautiful and engaging part of it.