Helping You Look After

Photo of John J. Mahoney
Paoli, PA


Mr. Mahoney has over 40 years of experience representing municipal governments and municipal authorities as solicitor and as litigation counsel, focused on zoning and land development proceedings, appeals and civil suits, and providing comprehensive legal services pertaining to municipal governance, as well as resolution of problems related to permitting and regulatory compliance.

Mr. Mahoney has also served as legal counsel handling many specialized aspects of environmental law, including defense of enforcement actions, criminal charges, compliance issues with environmental regulations, title insurance claims, storm water management issues, remediation and litigation.

Finally, Mr. Mahoney has served as counsel in land use, zoning and development department representing commercial and residential real estate developers in litigation, zoning and subdivision/land development approval process and government agency permitting in Southeast and Central Pennsylvania.

Practice Areas:

  • Land Use & Zoning
  • Appellate
  • Civil Matters
  • Municipal Law

Past Positions:

  • Chester County District Attorney’s Office, Assistant District Attorney, 1981 to 1984
  • Crawford, Wilson, Ryan and Agulnick, P.C., Shareholder, 1985 to 1999
  • Saul Ewing LLP, Chesterbrook, PA, Special Counsel, 2000 to 2004
  • K. Hovnanian Enterprises, Inc., Delaware Valley Division, Attorney, 2004 to 2005
  • Kaplin Stewart, Blue Bell, PA, Special Counsel, 2005 to 2008
  • Siana Bellwoar, Chester Springs, PA, Partner, 2009 to 2017


  • University of Pennsylvania Law School, Philadelphia, Pennsylvania
    • J.D. - 1980
  • Pennsylvania State University
    • B.S. - 1977
    • Honors: summa cum laude

Classes / Seminars:

  • Procedural and Substantive Challenges to Land Use Ordinances, Lorman Education Services, 2000 to 2007

Professional Associations:

  • Chester County Bar Association
  • Montgomery County Bar Association
  • Pennsylvania Bar Association

Current Employment Positions:

  • Senior Attorney

Bar Admissions:

  • Pennsylvania, 1980
  • U.S. District Court Eastern District of Pennsylvania, 1988
  • U.S. District Court Middle District of Pennsylvania, 1994
  • U.S. Court of Appeals 3rd Circuit, 1991
  • U.S. Supreme Court, 1984

Pro-Bono Activities:

  • Member, Board of Directors, YMCA of the Upper Main Line, 2001
  • Supervisor, Uwchlan Township, Chester County, Pennsylvania, 1990 to 1999