Tom Johnson House

Contract Duration

34 Months

Contract Value



Office of Public Works


The Commissioners of Public Works in Ireland

Civil / Structural Engineer

WS Atkins Ireland Limited

Services Engineer

Noel Lawler Consulting Engineers

Quantity Surveyor

WH Stephens Limited


We are pleased to announce that we have officially commenced works this week on the deep retrofit of Tom Johnson House, Beggar’s Bush, Dublin 4. This project has been selected as a Public Sector Retrofit Pathfinder Project and we are proud to have been appointed by the Office of Public Works (OPW) to this prestigious project. The OPW is responsible for a number of key roles within the project (Employer, Architects, Contract Administrators, etc.)

The completed project will be an exemplar, energy efficient, State office for occupation as a Headquarters Building by the lead Irish Government Department on the environment – the Department of the Environment, Climate and Communications. The works will consist of a significant upgrade to the 1970s building thermal fabric and overall energy use – that will upgrade the Building Energy Rating (BER) from a G rating to an A2 rating, resulting in an 85% reduction of annual energy use and will greatly extend the buildings useful life.

The refurbishment will retain the existing 1970s structure, taking advantage of the energy already embodied in the concrete structure and brick external façade. By retaining and upgrading these resources rather than demolishing and rebuilding, the works will have significantly less impact on the carbon footprint of the building. Internally, the existing cellular office layout will be modified to a more open plan arrangement – increasing the overall building occupancy – while the introduction of a new central floor void will create improved daylight and natural ventilation conditions.

The embodied carbon in those existing structures will considerably mitigate the climate change impact of the investment when compared with any new build option. Use of heat pump technology and the application of the OPW’s Green Procurement Policy will also mitigate the climate change impact of the project. All EU Regulatory requirements in relation to building material inputs, waste management and the re-use and recycling of waste materials have been incorporated into the project Works Requirements.

On completion of this deep retrofit project, Tom Johnson House will act as an exemplar in the transformation of existing buildings for future use. The building, which is currently occupied by the Labour Relations Commission and the Geological Survey of Ireland, will become the new headquarters of the Department of Environment, Climate & Communications (DECC).