Our Mission

To provide impartial, knowledgeable, effective and efficient dispute resolution services that minimize litigation costs while preserving professional relationships.
2025.05 Dillon_Sean

Sean M. Dillon

Founder / Shareholder

Highly experienced construction lawyer with over 29 years of private practice in construction law, construction litigation, business law, and commercial litigation. Practice heavily focused on resolution of very large and complex disputes relating to all aspects of the construction industry, throughout the entire U.S. and internationally, including on a large number of mega-projects utilizing design-build and public-private partnership delivery methods. After nearly three decades of private practice, transitioned to full ADR services including serving as arbitrator, neutral evaluator, dispute review board member, and mediator.

Experience spans multiple projects each in many separate construction industry sectors: 1) road, bridge, interstate, and toll road infrastructure projects; 2) major / signature bridge projects (including segmental concrete bridges, suspension bridges, and cable-stayed bridges); 3) light rail commuter train and subway projects; 4) heavy-rail projects and the first U.S. high-speed rail project; 5) vertical construction projects (high-rise and low-rise, both private / commercial and public sector); 6) airport terminal, concourse, runway and taxiway projects; 7) major water infrastructure projects (Third Locks Expansion at the Panama Canal, largest U.S. dam raise project, and water treatment plants); 8) EPC / industrial projects (production facilities, petroleum refineries, high voltage transmission lines traversing an entire state); and 9) residential projects. For at least fourteen projects, the matters in dispute ranged from $100 million to over $1 billion.

A substantial portion of experience has been for very large delay, disruption, and productivity loss claims. Types of disputes have also included claims regarding: extra / additional work; liens and bonds; defective construction / defective design; post-design / construction structural failures; differing site conditions; supply-chain issues including tariffs and taxes; qui tam litigation / False Claims Act allegations; bid protests; performance defaults and project abandonment; business torts (fraud, negligent misrepresentation, tortious interference, civil conspiracy, conversion, R.I.C.O.); contested domestication of foreign country money judgment; consequential damages; cardinal change; adjoining property issues (structural damage, loss of value, trespass, nuisance); suspension and debarment proceedings. Additional experience with criminal investigations regarding material substitutions and billing practices; environmental investigations; OSHA investigations and citations; labor & employment claims and union grievances arising out of construction projects (discrimination, retaliation, hostile workplace, violation of collective bargaining agreement); and catastrophic personal injury / property damage claims from heavy civil construction projects.

Practice has included representation of industry participants with differing viewpoints, including design-builders, design / engineering firms, owners, developers, contractors, subcontractors and sureties. Representation has extended to all phases of legal services – from procurement (contract review, preparation and negotiation, and bid protests) to project counsel services for the development / investigation of claims to the prosecution / defense of disputes in all forms of dispute resolution, including appeals.

Beyond the nearly three decades of construction law / litigation experience, educational background is in construction management, with four years of construction work experience in the field.