Upton & Hatfield values the health and well-being of our employees, clients, families, and communities. To uphold these values, we have implemented recommendations from the Center for Disease Control by encouraging our employees to work remotely whenever possible. This does not change our commitment to you, and we are still available to handle your legal needs and provide you with the highest quality legal services during these unsettled times. Our offices are open, but for urgent matters only in conformity with state and federal authority recommendations. If you have any questions or concerns, we are ready and available to discuss them with you. We want all of us to stay safe while we work during this temporary situation.

Barton L. Mayer


Bart Mayer is highly recognized for his expertise in serving the special needs of New Hampshire’s cities and towns and is listed annually in Woodward and White’s directory of The Best Lawyers in America® in the field of municipal law and was listed in the 2010 - 2012 issues of New England Super Lawyers in the areas of Government/Cities/Municipalities. He counsels municipalities in all areas of related law, including:

  • Land use development
  • Real estate taxation
  • Government administration
  • Municipal highways
  • Civil litigation
  • Eminent domain
  • Municipal trusts
  • Town meetings
  • Finance

Currently representing 25 municipalities in New Hampshire, Bart has appeared before the New Hampshire Supreme Court more than 35 times, with over 30 reported cases.

Bart was the former legal counsel for the New Hampshire Municipal Association (1981-1986), and was a member of the Legislative Committee for the Recodification of Zoning and Planning Statutes (1983). He is a frequent speaker at conferences sponsored by the New Hampshire Bar Association, Governor’s Office on Energy and Planning and the Local Government Center.

Bart is the author of New Hampshire Roads and Highways Manual, published by the New Hampshire Municipal Association. He served as law clerk to the New Hampshire Superior Court (1979-1980). He has a Martindale Hubbell BV rating.

Celeste Blais

Representative Matters

  • Dow v. Town of Effingham, 148 N.H. 121 (2002)

    Successfully enforced the Town's ordinance and procedures for implementing the ordinance over objection of a racetrack owner. The decision clarified the Town's authority to enact ordinances regardless of motivation and to inspect a permitee's premises. 

  • Doyle v. Town Gilmanton, 155 N.H. 733 (2007)

    Established authority of planning board to establish a buildable area separate and apart from the zoning ordinance. 

  • Forster v. Town of Henniker 167 N.H. 745 (2015)

    Clarified and enforced the Town's ability to regulate both agriculture and agritourism. 

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