Practice Overview

Dave Hammargren has been representing contractors, sureties, subcontractors, design professionals, owners and lenders in all types of construction and surety litigation and arbitration for more than 30 years.
He represents:

  • Sureties with respect to bid, performance, payment and miscellaneous commercial bond claims, and indemnity actions
  • Contractors, subcontractors and suppliers with respect to mechanics’ liens, bond claims and other efforts to collect payment for completed work, and, also, in defense of claims from owners and others of defective or incomplete performance
  • Project owners in connection with claims against contractors and design professionals for negligence and breach of contract, including construction defects

Dave drafts, reviews and negotiates construction-related contracts and frequently acts as an arbitrator or mediator to assist other parties in resolving their disputes. He is active in the industry, having served on the Board of the Minnesota Chapter of the Construction Management Association of America and the Board of the Associated General Contractors of Minnesota.
Dave frequently writes and speaks to construction, surety and professional organizations on relevant legal issues and developments. Dave is an active member of the American Arbitration Association Panel of Construction Arbitrators.

Bar Admissions
  • Minnesota, 1985
  • U.S. Court of Appeals, Eighth Circuit
  • U.S. District Court, Minnesota
  • U.S. District Court, North Dakota
  • U.S. District Court, South Dakota


  • William Mitchell College of Law, St. Paul, MN; 1985, J.D.
  • St. Olaf College, Northfield, MN; 1978, B.A. Economics, English

Professional Associations & Memberships

  • Construction Management Association of America, Former Board Member, Minnesota Chapter
  • Associated General Contractors of Minnesota, Former Board Member
  • Construction Lawyers Society of America