Sisk is proud to have been appointed as the main contractor for the Office of Public Works’ (OPW) new 14 storey Landmark Office Building at Opera Square in the heart of Limerick City with construction set to begin in the coming weeks.
The project marks a significant milestone in the wider Limerick Twenty Thirty (LTT) programme, which is transforming the economic and urban landscape of the city and region. Once complete, the building will stand as Limerick’s, and the Mid-West’s, tallest building, overlooking the Abbey River at Bank Place.
The OPW has engaged LTT to deliver the development, reflecting strong confidence in LTT’s proven track record, including recent delivery of the site wide basement works and the One Opera Square building. Sisk will construct the building’s shell and core, including structure, façades, roof, and primary building services.
The 30-month construction programme will employ up to 300 people on site and will deliver 100,000 sq. ft. of high-quality office accommodation. Designed to meet the Nearly Zero Energy Building (NZEB) standard, the development will operate entirely on renewable energy sources, supporting the State’s energy efficiency and emissions reduction goals.

Once operational, the building will serve as a major hub for Government departments in the Mid-West, consolidating up to 1,500 civil servants, 950 at any one time under a hybrid working model, into a modern, digitally enabled workspace. The project will also contribute to reducing the number of buildings in the OPW’s portfolio while supporting the regeneration of Limerick’s city centre.
Leanne Broderick, Managing Director, Sisk said: “Having recently completed the One Opera Square building, we are looking forward to partnering with Limerick Twenty Thirty again to deliver the OPW Building. As we commence works on site, our local knowledge and collaborative approach will be central to delivering this project successfully.”
Minister of State for the OPW, Kevin ‘Boxer’ Moran, said: “I am delighted to be here today to announce the appointment of Sisk and look forward to the commencement of what is an important project for the OPW, Limerick and the wider Mid-West region. This substantial investment in Limerick clearly demonstrates this government’s strong commitment to balanced regional development,” .
Local leaders also welcomed the project’s progress. Príomh Chomhairleoir, Cllr Catherine Slattery, highlighted the positive impact on the city centre, noting that the development will bring renewed activity, investment, and footfall to Limerick. Chair of Limerick Twenty Thirty, James Collins, emphasised the significance of delivering one of the most ambitious elements of the Opera Square masterplan and acknowledged the OPW’s confidence in LTT and its partners.