Mark Wearen is a senior director and quantum expert in the Expert Services practice.



Managing Director

Mark Wearen is a managing director and quantum expert in the Expert Services practice, based in the Dublin office. He is a Chartered Quantity Surveyor (FSCSI/FRICS) and Chartered Civil Engineering Surveyor (MCInstCES) with over 33 years of cost and commercial management experience in the construction and engineering industry. He has been appointed as an expert on quantum and quantity surveying disputes on building, civil engineering and utility infrastructure projects in Ireland, the UK and internationally.

He has worked for contractors, employers and sub-contractors on both public and private sector projects. His project experience includes contracts procured using a range of procurement options including traditional, design and build, target cost, turnkey and PPP/PFI. He has extensive experience of the Irish Public Works suite of contracts as well as FIDIC, NEC, ICE/IEI, RIAI and JCT contract forms.

He has provided independent reports on claim risk and quantum for public and private sector clients and has been appointed as an expert witness on multiple occasions. Instructions taken include referrals to mediation; conciliation, arbitration, adjudication; and litigation. He has given evidence under cross examination and concurrently (“hot-tubbing”) in arbitrations, non-statutory adjudications and conciliations.

Mark has produced and maintained reference cost and unit rate databases for a number of Irish government agencies and is experienced in the identification and quantification of risk and the organisation and facilitation of risk management workshops.

He holds a postgraduate diploma in construction law and administration and an MSc with distinction in construction law and practice.

Construction Expert Services

Expert analysis, testimony and advice for construction and engineering disputes and projects.

Construction Project Advisory

Manage challenges and uncertainties throughout the project lifecycle.

Commercial and Economic Disputes Expert Services

Kroll excels in assessing financial loss and damages in complex commercial litigation, and offers robust analysis and testimony in M&A and post-acquisition matters.

Expert Services

Independent expert analysis, testimony, advice and investigations for complex disputes and projects.