Recognized in Best Lawyers since 2027 
Mark Rosencrantz is a Seattle, Washington commercial litigation and construction law attorney with nearly three decades of experience representing businesses in complex disputes. He serves as Chair of the Construction Group at Carney Badley Spellman PS and advises clients ranging from closely held companies to national organizations.
Mark’s commercial litigation practice includes contract disputes, shareholder disagreements, business torts, fraud claims, trade secret litigation, and enforcement of non-compete and confidentiality agreements. He has handled matters in state and federal courts across the country and represents clients in arbitration and mediation.
As part of his Construction Law practice, Mark represents contractors, subcontractors, developers, owners, and design professionals in disputes and negotiations arising throughout the life of a construction project. His experience includes construction defect claims, delay and impact disputes, bid protests, contract negotiations, and construction risk management matters.
Mark takes a practical approach to dispute resolution and works to help clients address legal issues efficiently while protecting their business interests.
