Our Experts

Andrew Merrilees

Partner

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Highlights

Chartered Quantity Surveyor with over 30 years of experience.
Proven as a credible expert witness under cross-examination.
Specialises in quantum, delay, and disruption matters.
Expertise across construction, engineering, and insurance disputes. 
President of the Chartered Institute of Building Singapore.

Services

Construction Delay & Disruption | Construction Quantum | Insurance Claims | International Arbitration

Industries

Enjoying a strong reputation as a leading quantum and delay expert, Andrew Merrilees is known for his “detailed and meticulous approach” in technically complex disputes. He is further recognised as “clear and coherent” and for his “ability to convey his position clearly and persuasively”.

Lexology Index - Consulting Experts - Construction - Quantum, Delay, and Technical

Expertise

Andrew Merrilees is a Chartered Quantity Surveyor with over 30 years of experience. He has been appointed as a quantum and delay expert on more than 15 occasions.

Andrew has testified in arbitration, litigation, mediation, adjudication, and provided support to dispute boards under the rules of SIAC, AIAC, HKIAC, DIAC, LCIA, and the courts. He has produced expert reports for disputes with values of up to $500 million.

Andrew specialises in expert witness and dispute avoidance involving complex claims and disputes across the construction, engineering and insurance industries. He has particular expertise in delay and disruption and quantum matters of loss and expense.

Professional recognition

Lexology Index

Construction – Recommended

Consulting Experts – Construction – Quantum, Delay & Technical – Recommended

Andrew Merrilees stands out for his deep technical knowledge and strong track record in construction and engineering disputes. He is lauded as a “trustworthy and convincing expert witness” who regularly assists on major, multi-jurisdictional matters.
Lexology Index - Construction

Background

Andrew has extensive experience in building and civil engineering projects, including construction management, design and build, and target cost contracts. He has led commercial and quantity surveying teams while interfacing and liaising with the employer’s representatives, design, architectural, and engineering consultants, construction and planning staff, and legal representatives.

Andrew is dual-qualified, with qualifications in quantity surveying and law. He is a fellow of the Royal Institution of Chartered Quantity Surveyors, the Chartered Institute of Building, the Association for Project Management, the Chartered Institution of Civil Engineering Surveyors, the Association of Cost Engineers, and the Chartered Management Institute. Andrew is a member of both the Chartered Institute of Arbitrators and the Society of Construction Law, a practising member and accredited expert of the Academy of Experts, and a registered professional surveyor in Hong Kong.