Back to All Professionals

John J. Sylvanus
Back to All Professionals
John J. Sylvanus

York, PA

John is an attorney in the firm’s Litigation and Construction Law Groups. He is an experienced litigator who counsels clients in construction-related matters, with experience in litigation in both state and federal courts, arbitration and mediation and appellate litigation. His practice focuses on the defense of professional liability claims against design professionals, commercial litigation, construction contract review and litigation, insurance defense and products liability defense.

John represents architects, engineers, builders, contractors and subcontractors in matters involving contract interpretation and disputes as well as insurance, indemnification and arbitration contract provisions. John also assists his clients with collections, bid challenges, change orders, and the resolution of construction-related liquidated damages claims.

John also maintains an active practice in appellate litigation, successfully representing a variety of industries in the appeals process.

  • The Best Lawyers in America®, Construction Litigation (2020, 2021, 2022, 2023, 2024)
  • York County Bar Association
  • Pennsylvania Bar Association
  • “Construction Risk Management: From Contract to Completion”, Wake up with Barley: A Morning on Real Estate (September 2017)
  • “Financial Impact of Construction Litigation”, Construction Financial Management Association – Central PA Chapter (February 2017)
John J. Sylvanus
  • University of Pittsburgh School of Law, J.D.
  • University of Delaware, B.A.
  • Pennsylvania
  • United States District Court, Middle District of Pennsylvania
  • United States Appeals Court for the 3rd Circuit
  • Various other state and federal courts pro hac vice
  • U.S. District Court for the Western District of Pennsylvania
Community Involvement
Cultural Alliance of York County

Board member

York Symphony Orchestra

Former board member

Dallastown Area School District Long Range Planning Committee (2000-2001)


York City School Board (1985-1992)


Related News

View More News
Press Release
August 25, 2021

“Best Lawyers” Honors 30 Barley Attorneys

For Immediate Release  Lancaster, Pa. – Barley Snyder is please...

Learn More
Press Release
August 20, 2020

Nearly Thirty Barley Snyder Attorneys Named “Best Lawyers”

Media Contact: Michael Sadowski, Communications Coordinatormsadowski@barley...

Learn More
News Alert
May 5, 2020

Legal FAQ for the Construction Industry

With Pennsylvania construction activities back underway companies are using...

Learn More
Press Release
August 15, 2019

Barley Snyder Places 21 Attorneys on “Best Lawyers” List

Media Contact: Michael Sadowski, Communications Coordinatormsadowski@barley...

Learn More
Press Release
December 21, 2016

John Sylvanus Named to Cultural Alliance Board

York, Pa. – Barley Snyder is proud to announce that John Sylvanus, an at...

Learn More
Press Release
January 28, 2013

John Sylvanus Appointed to York Symphony Orchestra’s Board of Directors

York, PA – The Law Office of Barley Snyder is pleased to announc...

Learn More

Get in Touch

Our attorneys, paralegals and staff look forward to hearing from you. Please reach out to let us know how we can help.

Get In Touch
Super Lawyers
Best Law Firms US News
Best Lawyers