Dennis Allen


Dennis has over 40 years of experience in the construction industry. He has acted in disputes across the USA and international construction markets and has been appointed as quantum expert of more than 75 occasions.

Dennis has worked with contractors, owners and developers, throughout the construction and operational processes, in overall project development, preparing and monitoring project cost controls and in helping to manage risk. He analyses issues such as actual cost audit, economic losses, labour and equipment costs, acceleration costs, lost profits, cumulative costs of changes, insurance claims, and delay costs. He has provided claims related services to projects ranging from buildings, defence and infrastructure, to oil and gas, power and utilities across North and South America and the Middle East.

Dennis has served as an expert witness on some of the largest construction and real estate claims in both the USA and overseas. He has testified on over 30 occasions and delivered more than 20 sworn depositions. Dennis has been cross-examined in both arbitral and court proceedings, including concurrent evidence (hot-tubbing). He also works in contract disputes and other issues between government contractors and state or federal governments.

Dennis is a published author, Construction Accounting – A Guide for Attorneys and Other Professions – ABA Book Publishing (2010) and Forms I Advocate for Project Management, Construction Formbook – Aspen Publishers (2004). He is a Fellow of Royal Institution of Chartered Surveyors and has delivered numerous seminars on various construction matters. Dennis is also a certified public accountant, certified construction industry financial professional, certified fraud examiner, certified cost professional and certified in financial forensics.

Dennis is a renowned expert in the field of cost and damages, his clients have come back to him time and again, some for over 20 years.  One client of 20 years says, “he is the only damages expert I use as Dennis knows his way around damage presentations and the practical aspects of construction projects”. Another international attorney says Dennis is like a famous credit card, “don’t leave home without him”. His associates describe him as a “muddy boots accountant”, an appellation Dennis gladly accepts.

Qualifications BBA Accounting
Contract Specialities US Federal government, cost basis contracts
Expert Details
Location Washington, DC, USA
Services Quantum
Sectors Buildings, Infrastructure, Industrial, Power & Utilities, Oil & Gas, Aerospace, Defence, Security & Space
Expert Statistics
Years of Experience 40+
No. of Expert Commissions 75+
No. of Cross Examinations 30+
No. of Depositions 20+

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