About Us


McCarthy Keville O’Sullivan Ltd. is a professional consultancy offering an extensive range of Planning, Environmental and Project Management services. Our large multi-disciplinary team of experienced professionals have the necessary skills and expertise to successfully manage the most complex of projects. Our clients are the focus of everything we do.

We respond promptly to their ever-changing needs by delivering a cost-effective, dynamic and quality–driven service, on time and within budget. We provide a wide range of services to both public and private sector clients. Our public sector experience spans projects completed on behalf of Government Departments, Local Authorities and State Agencies.

Our services to private sector clients cross a wide range of industries, including: energy, construction, transport, tourism, commercial and residential development, education, healthcare, waste management and leisure.

Our extensive experience and wide range of services has seen us successfully complete projects in every Irish county. The combination of our Planning, Environmental and Project Management services ensures we can effectively deal with our client’s business needs.
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