d-on architects ltd acted as Project Managers, Design Team leaders & Principal Designer for a multi-disciplinary team made up of Structural Engineer, Civil Engineer, M&E Engineers, Landscape Architects, Acoustic Consultant & BREEAM Assessor for the new build Halla Éanna, Glengormley. The brief called for a Sports & Community building accommodating a Sports Hall with 4G pitch, associated Changing Rooms with accessible changing, Community Rooms, Offices, ancillary accommodation, etc. We led stakeholder engagement with Naomh Éanna CLG and Croí Éanna Community Group developing the brief and schedule of accommodation. We prepared an initial feasibility report to assist with the Business Case and Economic Appraisal. We assisted Croí Éanna with their funding applications liaising with public body funders. We led the Pre-Application Discussions with the Planning Authority and co-ordinated the planning application securing approval for construction of the new building on a Site of Local Conservation Importance (SLNCI). We co-ordinated the Design Team developing the RIBA Stage 4 on BIM level 2. We co-ordinated the Building Control application securing Building Control Plan Approval. The project was traditional procurement under the NEC Contract with d-on architects ltd acting as NEC Project Manager and Principal Designer. We co-ordinated the design team to assist the BREEAM Assessor to deliver BREEAM. Understanding this landscape and the exposed nature of the site was essential as the challenge faced was how to design a large scale building in a sensitive landscape. The brief from Naomh Éanna CLG and Croi Éanna Community Group called for a large volume sports hall which set the roof height under which classrooms and community rooms were to be accommodated. The form is regular and compact to work efficiently and economically within public funded budgets. The main design decision was to create a facade for the large building form that would mellow over time and transition into the colours and hues of the surrounding landscape. The material chosen was a larch board cladding that was untreated and left to weather and silver naturally over time. The larch in itself broke down the scale of the building which has been broken down further with patterns created by various board sizes and board thicknesses. The boards are turned through 90º revealing a thickness to the material and giving a depth to the patterns. The rotated boards conceal windows by day that are revealed at night when the building interior is lit. The building is viewed from many aspects at this landscape elevation and one important viewpoint is from the Belfast Hills looking down onto the building. The mono pitch roof is covered in an extensive green roof that creates seasonal colour on the roof surface complementing the landscape colours, reducing rain surcharge and eliminating heat sinks common to large roof areas covered with traditional roofing materials. The circular rooflights scattered across the roof provide natural light and ventilation into the sports hall as well as the first floor classrooms. The sports hall below accommodates a 4G pitch for indoor sports and training. The building has created a focal point for the local community. The landscape around the building was left to re-wild and already the diversity of plants is increasing. Croí Éanna Community Group has already organised a community planting event with over 400 trees planted in the grounds around the building.