FacultyFaculty/Author Profile
Denis F. Shanagher

Denis F. Shanagher

Duane Morris LLP

San Francisco, CA, USA

Denis F. Shanagher has handled jury trials, court trials, mediations and arbitrations for more than 30 years. He advises clients on land use and related litigation (CEQA, entitlement, subdivision map act and administrative hearings). In addition, Mr. Shanagher handles matters involving broker liability; complex construction defect; insurance coverage (advice and litigation for both policyholders and insurers); and general commercial and real estate contracts and disputes. He also has provided counsel in the areas of employment; professional negligence, emphasizing real estate agents, attorneys, accountants and insurance brokers; and directors' and officers' liability.

Mr. Shanagher is a 1981 graduate of the University of California, Hastings College of the Law, where he was a member of the Constitutional Law Quarterly, and a graduate, with distinction, of Stanford University.

Representative Matters

  • Representing developers and owners in obtaining project approvals (commercial, residential, and industrial) before local and state agencies.
  • Representing property developers/owners in CEQA litigation and contract disputes.
  • Representing property owners and contractors in complex construction defect litigation.
  • Representing insurers and insureds in the evaluation and litigation of complex insurance coverage disputes throughout the Western United States.
  • Representing temporary employment and retail firms in various employment matters, including wage/hour class actions, wrongful termination and discrimination claims.
  • Representing commercial firms in trade secrets and unfair competition claims.
  • Represented national retailer (850+ stores in 26 states) in various commercial litigation matters, including trade secret and unfair competition litigation, SEC litigation and in wage/hour class action.
  • Representing real estate and insurance brokers in errors and omissions litigation.

Areas of Practice

  • Land Use and Land Use Litigation
  • Real Estate Litigation
  • General Commercial Litigation
  • Insurance Coverage and Insurance Coverage Litigation
  • Construction Litigation
  • Professional Liability Litigation
  • Arbitration and Mediation

Professional Activities

  • American Bar Association- Litigation Section-- Committee on Corporate Counsel- Business Section-- Committee on Business and Corporate Litigation
  • State Bar of California
  • San Francisco Bar Association
  • Barristers Club of San Francisco
  • Defense Research Institute
  • American Inns of Court
  • San Francisco Superior Court Arbitrator, 1989-present
  • San Francisco Superior Court Settlement Conference panelist, 1988-present
  • San Francisco Superior Court judge pro tem, 1991-present


  • California
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. District Court for the Central District of California
  • U.S. District Court for the Eastern District of California
  • U.S. District Court for the Northern District of California
  • U.S. District Court for the Southern District of California


  • University of California, Hastings College of the Law, J.D., 1981- Member, Constitutional Law Quarterly
  • Stanford University, B.A., 1978


  • Duane Morris LLP- Partner, 2015-present
  • McKenna Long & Aldridge LLP- Partner, 2012-2015
  • Luce Forward Hamilton & Scripps LLP- Partner, 2004-2012
  • Preuss Walker & Shanagher- Partner, 1993-2002
  • Bronson Bronson & McKinnon- Associate/Partner, 1981-1993

Civic and Charitable Activities

  • St. Francis Homes Association, President, 1994-1996
  • The Randall Museum Board of Directors, 1998-2002
  • The Drew School Board of Directors, 2002-present
  • San Francisco Little League, President, 2006-2009, Board Member
  • Stanford Rugby Foundation, Chairman, 2004-present

Honors and Awards

  • Northern California Super Lawyers, Business Litigation, 2008-2016
  • Super Lawyers Business Edition, Business Litigation, 2012-2015
  • Super Lawyers Corporate Counsel Edition, Business Litigation, 2010-2014
  • AV® Preeminent™ Peer Review Rated by Martindale-Hubbell

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

Selected Speaking Engagements

  • Annual Claims Seminar, RSUI, Atlanta, May 2015
  • PLI Commercial Real Estate Institute, November 2014
Denis F. Shanagher is associated with the following items:
Web Segment  Web Segment Real Estate Litigation: A Toolkit for Transactional Lawyers - 19th Annual Commercial Real Estate Institute, Monday, November 13, 2017
MP3 Audio  MP3 Audio Real Estate Litigation: A Toolkit for Transactional Lawyers - Real Estate Litigation: A Toolkit for Transactional Lawyers, Monday, November 13, 2017
MP4 - Mobile Video Seg  MP4 - Mobile Video Seg Real Estate Litigation: A Toolkit for Transactional Lawyers - Real Estate Litigation: A Toolkit for Transactional Lawyers, Monday, November 13, 2017
On-Demand Web Programs  On-Demand Web Programs 19th Annual Commercial Real Estate Institute, Friday, November 17, 2017, San Francisco, CA

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