Robert F. Roos

Partner at Lewis Roca Rothgerber Christie LLP

Robert Roos has been with the firm for more than 30 years. Robert practices in the firm's Litigation Practice Group with a particular emphasis on commercial and construction disputes, procurement disputes, and environmental matters. He has been recognized as a top Arizona attorney by Best Lawyers, Martindale-Hubbell, and Southwest Super Lawyers. Robert counsels businesses on all facets of commercial, construction, and environmental law and regularly represents clients in litigation, arbitration, and administrative proceedings. He is a past chair of the Construction Section of the State Bar of Arizona and the Environmental Committee of the Arizona Rock Products Association.

Robert is experienced in all aspects of building and engineering construction from contract negotiations and procurement, to claims avoidance, counseling, and resolution. His experience includes representing contractors and service providers in procurement disputes, and representing owners and contractors in construction disputes of all kinds, including contract terminations, delay claims (including acceleration, interference, and lost productivity claims), license issues, and defective work and negligence claims. He regularly counsels clients on risk management techniques, dispute avoidance, and alternative dispute resolution.

Robert has broad experience with the Flood Control District of Maricopa County. He has represented clients in Flood Control District permitting and compliance matters and regulatory development.

Robert is general counsel to the Arizona Chapter of the Associated General Contractors. He has spoken to various industry organizations, including the Arizona Builders Alliance, the Construction Section of the State Bar of Arizona, the National Association of Credit Managers, and Lorman Education Services.

Robert completed the American Arbitration Association’s 40-hour Essential Mediation Skills Course in November 2012.



  • Partner

    Current role