Greater use of MMC offers many potential benefits to those working within the sector and to society at large. It provides opportunities for a more sustainable built environment, better working conditions, and a more productive construction sector that can deliver high-quality homes more quickly than conventional, onsite construction. This report examines the barriers to greater use of MMC in Ireland with a focus on the residential sector. It analyses both the private and the public sectors. This is to improve delivery in terms of speed, quality, and environmental impact. Better public delivery is desirable in and of itself, but is also of interest as public sector investment can be leveraged to encourage the private sector. The report is interested in both sectors and the impact that one has on the other.