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John W. Dennehy - Nashua, NH

127 Main StreetSuite 1 Nashua, NH 03060- 2711

Updated: 12/14/2017

Nashua Construction Law Lawyer


John W. Dennehy's practice areas include Business Litigation, Design and construction Law, Corporate Law and Personal Injury. He served as a Litigation Partner at Donovan Hatem LLP where he oversaw the firm's New Hampshire Practice and served as a senior member of the General Trial Group and Professional Senior Member of the General Trial Group and Professional Practices Group. He was also counsel at Devine Millimet in Manchester, and served in the U.S...

About John W. Dennehy

Practice Areas

  • Construction Law
  • Business & Commercial Law


  • 70%

Current Employment Position(s)

  • Managing Partner


  • Spanish


Bar Admissions

  • Massachusetts, 2003
  • New Hampshire, 2004
  • U.S. District Court District of Massachusetts, 2007
  • U.S. District Court District of New Hampshire, 2004
  • U.S. Court of Appeals 1st Circuit

Other Affiliations

  • New Hampshire Bar Association
  • Boston Bar Association
  • Massachusetts Bar Association
  • Massachusetts Defense Lawyers Association
  • Charted Property & Casualty Underwriters Society
  • Defense Research Institute


  • Suffolk University Law School, Boston, Massachusetts, 2003
  • University of North Carolina, Wilmington, North Carolina, 1994
    Honors: Honors in English Literature

Past Positions

  • Devine, Millimet & Branch, Professional Association, New Hampshire, Counsel
  • United States Marine Corps.
  • Donovan Hatem LLP, Litigation Partner, 2007 - 2014

Pro Bono Activities

  • Hampstead Congregational Church (Moderator)
  • Hampstead,N.H.Civic Club (Served as Soccer and Basketball Coach)
  • Major Dennehy Foundation (N.H. Non-profit Corporate Officer)
  • National Marine Corps Bus. Network-Boston (President)

Classes and Seminars

  • Commercial Construction Contracts, ACEC-NH, 2010 - Present

Ancillary Businesses

  • Writing and Publishing


Representative Clients

  • SDM Investment Group, LLC
  • ADA Engineering, Inc.
  • Real Trust IRA Alternatives, LLC
  • Nicholoas Paterakis


  • Stephen Kesselman, Esq.
  • Edmond Schneider, CPCU
  • Kelly Martin Malone, Esq.
  • Stephan Jouret, Esq.

Video & Photo


Office Information


127 Main StreetSuite 1 Nashua, NH 03060- 2711


  • 603-943-7642

Accepts Credit Cards


Office Hours

9:00 a.m. to 5:00 p.m M-F



  • Indiana Appeals Court Holds Economic Loss Doctrine Bars Negligence Claims Against Professionals, The Design and Construction Management Professional, 2009
    Review of case where court by the dismissal of the defendant where plaintiff sought economic loss for damages but did not have a contract with the defendant
  • Massachusetts Court Rules Design Team is Not Responsible for Contractor's Failure to Perform Work, Design and Construction Management Professional, 2009
    Article about design team getting dismissed from lawsuit due to contractor's work not within their obligations.
  • New Hampshire section of American Bar Association's Manual on Product Liabililty Warnings
  • Design Professionals Dismissed from Two New Hampshire Lawsuits, The Design and Construction Management Professional Reporter, October, 2009
    Article discussing the dismissal of an architect and two engineering firms from New Hampshire lawsuits.
  • American ABr Associations Manual on Product Liability, ABA, 2006
    A state by state review of product liability warnings in which I co-authored the N.H. section.

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127 Main StreetSuite 1 Nashua, NH 03060- 2711

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