Leon Costello


Ph: 609-399-6333

Fax: 609-399-3710

Leon Costello, CPA, RMA, LPSA

Audit Partner

“I serve the organizations that serve our communities. I understand the unique challenges facing local governments, authorities and school districts, and am dedicated to finding unexpected solutions to their issues.”

Since 1975, Leon Costello has dedicated his career to auditing governmental and nonprofit entities including counties, municipalities, school districts, state and local authorities. As a result, he has acquired a unique expertise in this specialty, allowing him to look beyond basic numbers to uncover possible challenges as well as new trends and opportunities for his clients. Leon provides the organizations he serves with the insights and business intelligence necessary to become sound financial stewards while fulfilling their missions to strengthen our communities.

Educational Background:

  • B.S. in Accounting from St. Francis University

Professional Affiliations and Credentials (past and present):

  • American Institute of Certified Public Accountants
  • New Jersey Society of Certified Public Accountants
  • Registered Municipal Accountants Association of New Jersey
  • Associate member of the Government Finance Officers Association

Community Service:

  • A frequent guest speaker for the New Jersey League of Municipalities and The New Jersey Government Finance Officers Association


Outside the Office:
Leon resides in Ocean City, New Jersey, with his wife Jennifer, their son Alexander, and their daughter Juliana. He is also the proud father of three adult children. His free time is spent with family, dining out and chasing the elusive perfect golf score.