2955 80th Ave SE Suite 201

Mercer Island, WA 98040

Direct: (206) 515-2388

Mark Hannah MWL_edited_edited.jpg


  • Director of Disputes Services, MWL Advisory, LLC

  • Senior Managing Consultant, MWL Advisory, LLC​

  • Senior Consultant, MRW Advisory, LLC



  • B.A., Environmental Studies: Economics, Magna Cum Laude, Middlebury College (2011)

  • Business Bridge Program, Tuck School of Business at Dartmouth (2011)

  • Certified Management Accountant (CMA)

  • Attorney General of Washington CLE Event, "Approach Construction Claims Like A Pro" (2018)

Mr. Hannah commenced his career in forensic accounting and business litigation consulting in 2011, and has worked in the evaluation of economic damages since that time.  Mark is a Certified Management Accountant, and member of the Institute of Management Accountants.

Mark's primary areas of emphasis have been construction claims and disputes, the evaluation of cost and billing accumulation under contracts, forensic accounting investigations, and the review of internal controls processes.  He has provided deposition testimony in the state of Washington and co-authored multiple expert reports.

Professional Experience

Selected Clients:  State and regional transportation organizations; counties; universities; school districts; mechanical contractors; general contractors; real estate developers; seaports; and individuals.

Selected Experience in Construction Matters


  • Experience includes construction projects related to tunnels, roads, hotels, light rail lines, mining facilities, power plants, commercial and school buildings, municipal parks, mixed-use developments, and other projects.


  • Work performed in this area includes analysis of claims for labor, materials, subcontractor costs, equipment standby, job site and home office overhead, and other types of construction claims, as well as analysis of financial statements, bid documentation, and electronic cost reports to evaluate profit / loss.


  • Experience with a variety of contract types, including fixed price, guaranteed maximum price, cost reimbursable, and contracts containing combinations of fixed price, allowance, and unit price elements.  

Key Engagements


  • Mark recently led the analysis and repricing of a contractor’s claims for delay, extended overhead, and acceleration on a $32 million subcontract; managed the audit of a $170 claim for delay-related costs billed under a $1.1 billion contract for a state transportation organization; served as a testifying expert on a $600 million claim for delay and impact costs; and directed the audit of the costs and billings on various multi-million dollar guaranteed maximum price contracts.

Selected Experience in General Commercial Disputes


  • Experience includes matters involving trust fund administration, billing disputes, and internal controls processes.


  • Work performed in this area includes tracing misappropriated trust fund assets through bank and investment accounts, analyzing project correspondence and billing records, and reviewing work processes and internal controls.

2010 - present

2010 - present