Larry Prosen is a government contracts attorney who holds a degree in architecture and has specialized in construction litigation. Larry focuses his practice on representing and advising contractors (both construction and non-construction) on a broad range of matters related to government contracts, as well as representing clients in public and private/commercial construction litigation. Broadly experienced in all aspects of government contracts, from regulatory compliance, to claims and bid protest litigation, Larry’s experience includes representing contractors and subcontractors in litigation matters and contract disputes including delay, impact, loss of productivity, and geotechnical/differing site condition claims. Larry has appeared frequently in proceedings before many U.S. District Courts as well many state and local courts and agencies. He also counsels contractors on Small Business Administration (SBA) matters ranging from 8(a) formation and status protests to the Mentor-Protégé Program and the Service-Disabled Veteran-Owned (SDVO) and HUBZone small business programs. Larry also sits as an arbitration neutral and mediator on the AAA’s Construction Industry Panel of Neutrals and is the ABA Section on Litigation’s representative to the AAA’s National Construction Dispute Resolution Counsel. He is also a founding Editor-in-Chief of the American Journal of Construction Arbitration and ADR published by Juris Publications. Larry has represented clients in many arbitrations, mediations and ADRs in both domestic and international fora.

Larry's national and international experience includes providing advice and representation in connection with construction and infrastructure projects on six continents and in nearly 20 countries for clients in the infrastructure, environmental, office, commercial, process and manufacturing, energy production/transmission, and real estate sectors. He has also represented clients across over 30 states of the United States in Federal, local and commercial construction, and government contracts matters. He represents clients before virtually all federal agencies including the Department of Defense, Department of Homeland Security, Department of State, Department of the Interior, Department of Veteran Affairs, U.S. Navy, U.S. Army Corps of Engineers, Naval Facilities Engineering Command, General Services Administration, U.S. Agency for International Development, Architect of the Capitol, and Smithsonian Institution.

Larry assists contractors, subcontractors, owners, and architects on a wide variety of commercial/private construction projects in negotiating prime and subcontracts, tenant fit-out agreements, and project workouts with financial institutions and sureties. He also represents clients in all aspects of litigation and claims resolution in connection with nonpublic contracts/projects. In addition, Larry advises clients outside the construction industry on all aspects of government contracts matters including protests, claims, disputes, contract reviews and due diligence for mergers and acquisitions, internal and federal investigations, and debarment and suspension proceedings.

Prior to joining the firm, Larry was a partner in the Washington, D.C. office of a national law firm where he led its Government Contracts Team and focused his practice on all aspects of construction litigation and government contracts including claims, protests, litigation, breaches of contract, Miller Act, Davis-Bacon Act, and mechanic’s lien disputes. Previously, Larry was a partner in the Washington, D.C. office of an international law firm where he focused his practice on government contracts and construction litigation.

Larry has published extensively and was a member of the 2013 Law360 Government Contracts Editorial Advisory Board. He has lectured and conducted seminars for clients and associations including the Associated General Contractors at several of its national conventions, Associated Builders and Contractors of Metro Washington, American Subcontractors Association, and D.C. Metropolitan Subcontractors Association.

While attending law school, Larry was the Lead Articles Editor of the CommLaw Conspectus Law Journal.

Larry is listed in the 2019 and the seven years immediately preceding editions of Chambers USA: America’s Leading Lawyers for Business in the area of Construction. He was recognized in The Best Lawyers in America® for Construction Law in 2019 and the five years immediately preceding. Larry was recognized in 2015, 2016, 2017 and 2018 as a Washington D.C. “Super Lawyer” in the area of Construction Litigation by Super Lawyers magazine. He was recommended in the area of Construction Law by Legal 500 US in 2016 and the three years immediately preceding and in 2018, he was recognized as a "Leading Lawyer" by Legal 500 US. Larry has been recognized as a “Top Rated Lawyer” in Washington D.C. for Construction Law by Legal Leader. He is AV Preeminent® rated by Martindale-Hubbell.*

*AV®, BV®, AV Preeminent® and BV Distinguished® are registered certification marks of Reed Elsevier Properties Inc., used under in accordance with the Martindale-Hubbell certification procedures, standards and policies.


Catholic University of America Columbus School of Law, J.D. (1997)

University of Maryland, B.S., Architecture (1994)

University of Maryland, B.A., History (1994)


District of Columbia (1998)

Maryland (1997)

Virginia (2017)

Court Admissions

U.S. Court of Appeals for the District of Columbia Circuit

U.S. Court of Appeals for the Federal Circuit

U.S. Court of Appeals for the Fourth Circuit

U.S. Court of Federal Claims

U.S. District Court for the District of Columbia

U.S. District Court for the District of Maryland

U.S. District Court for the Southern District of Texas

U.S. District Court for the Northern District of Illinois

Professional & Community Activities

District of Columbia Bar Association, Member

Maryland State Bar Association, Prior Member

American Arbitration Association, Construction Panel Neutral for both Arbitration & Mediation

American Arbitration Association, National Construction Dispute Resolution Committee, ABA Section on Litigation Representative

American Subcontractors Association, Attorney’s Council, Member

American Bar Association, Forum on Construction Industry, Member

Associated Builders and Contractors of Metro Washington, District of Columbia Legislative Committee, Past Chair

District of Columbia Department of Small and Local Business Development, Member; Construction Industry Advisory Council, Past Member

Law360, Government Contracts Editorial Advisory Board, Past Member

The Builder’s Ball, General Counsel and Member; Organizing Committee, Member


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