
Arthur Cox has a longstanding reputation for handling projects and infrastructure for a diverse client base, including banks, corporations, public bodies, developers, and contractors. The firm has a strong track record in managing complex, high-value projects across Ireland, with notable activity in the fast-growing sectors of social housing, data centres, and digital infrastructure. The team offers extensive support with the planning, development, acquisition, disposal, and operation of ancillary and brownfield projects. Aaron Boyle heads the infrastructure, construction and utilities practice and has significant experience handling infrastructure projects in the transport and telecoms sectors. Karen Killoran is especially well-positioned to handle contentious and non-contentious matters in the construction sector, while Danielle Conaghan is known for her expertise in planning and environmental issues. Other key names of note include Niamh McGovern and Ciara Dooley.
Testimonials
Collated independently by Legal 500 research team.
- ‘In our experience, this team, under the leadership of Danielle Conaghan, has consistently proven to provide the best legal services in this field.’
- ‘The team's knowledge and experience are exceptional.’
- ‘Danielle Conaghan has given us exceptional service.’
- 'Niamh McGovern is responsive to our needs and has an amazingly diverse legal mind from her work. Ciara Dooley is responsive as well, always provides sound advice and pairs well with Niamh to deliver an exceptional product.'
Key clients
- John Laing
- National Broadband Ireland
- Power Capital
- Celtic Roads Group
- Corio
- Greenlink Interconnector Limited
- Invesis
- Ardstone
- Meta
- LDA
- Department of Environment, Climate and Communications
- FuturEnergy Ireland
- Irish Social Housing Property II
- EIB Celtic Interconnector
- Bord Na Mona
Work highlights
- Advised John Laing as purchaser on all aspects of its acquisition of AMP’s Irish assets – Towercom, Valley Healthcare and Convention Centre Dublin PPP.
- Advised NBI on the sale of a majority stake to Asterion.
- Assisted Greenlink with project financing its interconnector project between Ireland and Great Britain.
Lawyers

Practice head
The lawyer(s) leading their teams.
Aaron Boyle