Marc D. Jonas

Marc D. Jonas

Blue Bell, Pennsylvania

Phone: (215) 542-9345

Fax: (215) 542-9421


Practice Areas

Land Use and Zoning

Municipal Law

Real Estate

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Lawyer of the Year 2018 - Best Lawyers

Best Lawyers Award Badge super lawyers - Marc Jonas


Among his notable accomplishments, Marc Jonas has been named by Best Lawyers in America® the 2018 Lawyer of the Year for Litigation in Land Use and Zoning Law in the Philadelphia Area. This follows his selection as 2017 Lawyer of the Year for Land Use and Zoning Law in the Philadelphia Area, by Best Lawyers in America®.

Marc is co-chair of the firm's Land Use and Zoning practice group. He has distinguished experience in real estate, land use, municipal law, and zoning matters, representing individuals, businesses, institutions, non-profit organizations and municipalities.

In his extensive career, Marc has appeared as counsel in Pennsylvania state and federal courts in matters involving land use and real estate law.

Marc’s diverse practice has included the representation of developers of residential, commercial, institutional, and religious land uses. He has represented neighbors concerned about the impacts of certain proposed land uses. He has successfully obtained land use approvals despite significant local opposition. His experience and credentials have motivated other attorneys to retain Marc as an expert witness in an assortment of legal matters, ranging from condemnation to family law. Some of his recent accomplishments include:

  • Successfully represented the Rothman Institute, securing approval from the Upper Moreland Township Zoning Hearing for significant renovations of a medical office building located in Willow Grove (Montgomery County). The renovations will increase significantly the number of physician exam rooms.
  • Successfully represented the Keystone Sanitary Landfill in dismissing the land use appeal filed by disgruntled residents and their anti-landfill civic association seeking to stop the expansion of a landfill in Dunmore (Lackawanna County). The court order affirmed the Dunmore Borough Zoning Hearing Board’s prior decision that the residents and association lacked standing to appeal, as they failed to establish that they are “aggrieved” parties with direct, immediate, and substantial harm.
  • Obtained final land development approval on behalf of Nappen & Associates for the expansion of the Montgomeryville Nissan car dealership in Montgomery Township (Montgomery County). The approved land development will see the demolition of the existing showroom buildings and construction of a new automobile showroom building of approximately 15,000 square feet and a 2000 square foot addition to the existing service facility adjacent to the showroom building on the same property. The plans include a future pedestrian walkway connection and the installation of stormwater best management practices.
  • Obtained zoning approval from the Hatfield Township Zoning Hearing Board for a 21,000 square foot collision repair facility which will be operated by Caliber Collision, the largest auto collision repair provider in the United States.

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Marc serves as Solicitor to the Zoning Hearing Boards of Towamencin, Upper Merion and Lower Salford Townships. He has been qualified as an expert witness in zoning law in the Courts of Common Pleas of Montgomery, Delaware, and Chester Counties and provided an expert opinion in a federal case arising out of Philadelphia. He has published articles in the Pennsylvania Bar Association Quarterly, the Tri-State Real Estate Journal, Commercial Investment Real Estate Journal, Township Solicitor, The Legal Intelligencer, and The American Bar Association ABA Journal. He was interviewed by Lawyers Weekly USA with regard to the Religious Land Use and Institutionalized Persons Act of 2000, and was also interviewed by Alan Colmes for the Fox News show Hannity & Colmes regarding the same federal statute (watch video).

Marc currently serves as Solicitor to the Montgomery County Development Corporation, a nonprofit corporation established to serve as the administrator for business loan programs offered by the County and the Commonwealth of Pennsylvania. Marc previously served for 3 years as Chairman of the Board of the Montgomery County Planning Commission between 2012 and 2014.

For more than 15 years, Marc has served as the chair/co-chair of the Montgomery Bar Association’s Real Estate committee, a committee whose membership includes real estate, municipal, and land use law practitioners. Under his leadership, that committee twice was recognized by the Montgomery Bar Association as the Committee of the Year. He presently serves as a member of the Association’s Judiciary Committee which evaluates judicial candidates, and in 2017, he was elected to the Board of Directors of the Montgomery Bar Association.


Marc is a member of the Pennsylvania and Montgomery Bar Associations.

Bar Admission

Supreme Court of Pennsylvania; United States District Court for the Eastern District of Pennsylvania; United States Court of Appeals for the Third Circuit.


Marc is a graduate of the University of Pennsylvania and received his J.D. from its law school in 1972.

Honors and Awards

  • Named the Best Lawyers in America® Lawyer of the Year for Litigation in Land Use and Zoning Law in the Philadelphia area, 2018
  • Named the Best Lawyers in America® Lawyer of the Year for Land Use and Zoning Law in the Philadelphia area, 2017
  • Selected by peers for inclusion in The Best Lawyers in America® in the field of Land Use and Zoning law and Litigation in Land Use and Zoning law, 2012 – present
  • Selected for inclusion in Real Estate/Land Use law by Chambers USA: America’s Leading Lawyers for Business, 2014 - present
  • Selected by peers for inclusion in Pennsylvania Super Lawyers magazine, 2004 – present
  • Rated AV® Preeminent™ by Martindale-Hubbell

Clerkship Experience

Marc served as a law clerk to President Judge James S. Bowman of the Commonwealth Court of Pennsylvania.