Post & Schell, P.C.

Mason Avrigian Jr.

Principal & Co-Chair, Construction Practice Group
Member, Firm Board of Directors

Philadelphia, PA

Phone: 215-587-1106
Mobile: 610-574-6099
Fax: 215-587-1444
mavrigian@postschell.com

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Bio

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Mason Avrigian, Jr. is a Principal and Co-Chair of the firm's Construction Practice Group and a member of the firm's Board of Directors. For over 30 years, he has represented owners, contractors, subcontractors, material producers, and other parties in construction matters and construction litigation in Southeastern Pennsylvania and New Jersey. He also handles general commercial litigation matters and real estate transactions and disputes. 

Mr. Avrigian has concentrated experience in matters involving general construction, heavy/highway construction, and utility construction. He counsels and represents these parties in all facets of construction projects, from bidding and contract drafting, to contract administration and construction management issues, to liens, claims, and dispute proceedings.

Mr. Avrigian has been honored by his peers as a Pennsylvania Super Lawyer in the Construction Litigation category for 2005, 2007-2013, and 2015-2024. In Chambers & Partners' 2023 USA Guide, he was ranked in “Band 1” for Construction Lawyers in Pennsylvania. He holds an AV Preeminent Peer Review Rating with LexisNexis/Martindale-Hubbell. The Best Lawyers in America© recognized Mr. Avrigian in its 2020, 2021, 2022, 2023, 2024 and 2025 editions in the categories of Construction Law and Litigation-Construction and was recognized as a Lawyer of the Year in the same categories in the 2022 and 2025 editions. For information about these selections and an overview of common third-party publications, rankings, and list methodologies, click here.

Read full bio > Read less >

Practices

  • Construction
  • Commercial Litigation
  • Real Estate
  • Alternative Dispute Resolution

Industries

  • Heavy/Highway & Utility Construction
  • Construction
  • Real Estate

Education

  • J.D., Villanova University School of Law, 1987
  • A.B., Cum Laude, Muhlenberg College, 1984

Bar Memberships

  • Pennsylvania
  • New Jersey

Court Admissions

  • U.S. Supreme Court
  • U.S. Court of Appeals, Third Circuit
  • U.S. District Court for the Eastern District of Pennsylvania

Representative Work

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Mr. Avrigian has handled a wide range of matters involving public and private construction projects and disputes. He serves both as counselor to a number of medium to large volume contractors and subcontractors ($10M to $200M annual volume) on various legal matters, including contracts, claims, disputes, labor/employment and business issues; and as litigation/claims counsel as needed. His areas of work include the following: 

  • Construction Contracts. Drafting, review, and negotiation of general contracts, subcontracts, construction management agreements, material supply agreements, design-build agreements, architectural and engineering services agreements and related construction contracts.
  • Bidding Disputes. Counsel and representation of contractors in the analysis of bidding issues and handling bidding disputes, including injunction actions relating to bid protests.
  • Public Works Projects. Representation of contractors in negotiations and litigation with public owners involving highway construction projects, bridge construction projects, utility construction projects, railroad and transit projects, and related public works’ projects.
  • Joint Ventures. Forming, organizing, and preparing contracts for joint ventures for public and private construction projects.
  • Claims. Analysis, preparation, submission, and prosecution of contractor and subcontractor claims for delay, disruption, inefficiency, and acceleration damages. Extensive work with claims’ consultants and expert witnesses in claim preparation and submission. 
  • Construction Defects Claims. Representation of owners, contractors, and subcontractors in claims relating to defective construction work on public, commercial and residential projects, including damages, remedial work, and remedies for breach of contractual duties and express and implied warranties. 
  • Material Producers and Suppliers. Representation of concrete, asphalt, and other construction materials producers in disputes regarding payments, quality, and sufficiency of materials and related issues.
  • Product and Equipment Claims. Representation of contractors and subcontractors in claims and disputes against manufacturers of equipment and products used on construction projects, including breach of contract and breach of warranty claims.
  • Scope of Work Issues. Representation of parties in negotiation of scope of work and change order issues and related claims and disputes. 
  • Mechanics’ Lien and Surety Bond Claims. Representation of owners, sureties, contractors, subcontractors, and material suppliers in the prosecution and defense of mechanics’ lien and surety bond claims. 
  • Trials/Dispute Proceedings. Jury and bench trials in state and federal courts; practice and trials before the Pennsylvania Board of Claims; arbitrations before the American Arbitration Association and other arbitration tribunals; mediations. 

Representative Matters

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Mr. Avrigian has handled the following matters: 

  • Lead counsel for Bilt-Rite Contractors, Inc. in the Pennsylvania Supreme Court decision in Bilt-Rite Contractors, Inc. v. The Architectural Studio, 866 A.2d 270 (2005) where the Court for the first time rejected contract privity requirements and adopted the cause of action of negligent misrepresentation for contractors against design professionals in Pennsylvania.
  • Represented highway contractor in claims against Pennsylvania Department of Transportation for delay damages, extra work and contract balance and in defense of liquidated damages assessment arising from $100 million highway reconstruction project.  
  • Represented utility subcontractor in claims against general contractor and New Jersey Department of Transportation arising from NJDOT bridge rehabilitation project.
  • Represented national homebuilder in connection with homeowner claims and in prosecution of claims against subcontractors for defective work.
  • Lead counsel for a contractor in claims against Port Authority for inefficiency and delay damages on bridge re-decking project arising from defective design.
  • Lead counsel for a contractor in claims against Department of Transportation for additional compensation arising from the performance of overrun quantities of contaminated waste materials.
  • Represented owner/developer of high-rise apartment building on the Delaware River in Philadelphia in scope of work and construction defect disputes with construction manager.
  • Represented contractor in successful defense and settlement of multiple Occupational Health and Safety Administration claims on a construction project.
  • Represented highway contractor in successful bid protest on $20.0 million Philadelphia International Airport project and secured award of contract for a client in the second phase of bid dispute.
  • Represented highway contractor in successful value engineering claim against Pennsylvania Department of Transportation before the Pennsylvania Board of Claims. Recovery of 100% of contractor’s claim.
  • Represented foundations subcontractor on a project involving foundations work (205 drilled concrete shafts) in a claim against a general contractor on new parking garage project in Newark, New Jersey. Successful recovery of arbitration award of contract balance and payment for extra work based on impacts to the work caused by geological conditions encountered.
  • Represented highway contractor in successful breach of contract claim against Pennsylvania Department of Transportation before the Pennsylvania Board of Claims arising from emergency repair work on I-95 resulting from a severe fire that shut the roadway down.
  • Represented electrical contractor in two federal court jury trials against product manufacturer to recover damages for defective connectors supplied for a public transit project in Philadelphia. Successfully recovered damages for contractor’s unabsorbed home office overhead under Eichleay.
  • Represented concrete placement subcontractor in successful arbitration claims against a general contractor and concrete testing inspection company to recover damages for costs incurred to remove concrete installed on project based on failures in contractually-required testing to be provided by a general contractor and testing firm.
  • Represented owner/developer of a large apartment project in Montgomery County, Pennsylvania against manufacturers of defective sprinkler heads. Successfully obtained favorable settlement while the jury was deliberating after a three-week trial.

Publications

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  • "The 2018 Steel and Aluminum Tariffs — Do Contractors Have Remedies?," The Legal Intelligencer's Construction Law Supplement (August 2018)
  • “The Continued Erosion of Coverage Post-Indalex,” The Legal Intelligencer (August 11, 2015)
  • “Expert Communications in the Wake of Barrick,” The Legal Intelligencer, (August 5, 2014)
  • “Recent Developments in Pennsylvania Construction Damages,” The Legal Intelligencer (August 4, 2008)
  • “To Arbitrate or Not to Arbitrate? That Continues to Be the Question,” The Legal Intelligencer (August 6, 2007)

News & Insights

News

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Fifty-one Attorneys Recognized as 2025 Best Lawyers in America by The Best Lawyers in America©. 

Mason Avrigian, Jr. Elected as a Member of Post & Schell's Board of Directors

Forty-Six Post & Schell Attorneys Named to the 30th Annual Edition of The Best Lawyers in America©
 

Chambers and Partners Recognizes Post & Schell Principals and White Collar and Health Care Practices in Chambers USA 2023 Guide

Thirty-Two Post & Schell Attorneys Named Pennsylvania Super Lawyers and Rising Stars for 2023

Thirty-Eight Post & Schell Attorneys Named 2022 Super Lawyers and Rising Stars for 2022

Forty-Six Post & Schell Attorneys Named to the 2022 Edition of The Best Lawyers in America©

Forty-One Post & Schell Attorneys Named Pennsylvania Super Lawyers and Rising Stars for 2021

Chambers and Partners Recognizes Post & Schell Principals and Health Care Practice in Chambers USA 2021 Guide

Thirty-Eight Post & Schell Attorneys Named to the 2021 Edition of The Best Lawyers in America©

Chambers and Partners Recognizes Post & Schell Principals, White Collar, and Health Care Practices in 2019 Chambers USA Guide

Post & Schell Appoints John W. Dornberger and Mason Avrigian, Jr. Co-Chairs of the Firm's Construction, Government Contracts & Surety Law Practice Group

Chambers and Partners Recognizes Post & Schell Principals and Health Care Practice in 2018 Chambers USA Guide

Mason Avrigian, Jr. and Jeffrey P. Wallack Join Post & Schell as Principals in Construction Practice Group

Media & Articles

Toggle Button Open

Law360 Interviews John Dornberger and Mason Avrigian About Mid-Atlantic Growth of Construction Practice

Mason Avrigian, Jr. and Jeff Wallack Explore the Impact of the Trump Administration's Steel Tariffs on the Construction Industry for The Legal Intelligencer

Mason Avrigian Discusses the Impact of Steel and Aluminum Tariffs on Construction Industry with Law360

Speaking Engagements

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Paul Logan, Mason Avrigian, and John Dornberger Present on CARES Act Opportunities on Associated Pennsylvania Constructors' Webinar on April 10

Mason Avrigian Co-Presents on Commercial Arbitrations at PBI CLE Seminar on March 13

Blogs & Thought Leadership

Toggle Button Open

Pennsylvania Construction Industry Reopening Date Now May 1, 2020

Coronavirus/COVID-19, Construction Contracts, and Legal Next Steps

Post & Schell Construction and Casualty Law Principals Among Faculty That Discussed Construction Law Trends and Issues at PBI Construction Litigation Seminar on Oct. 15

Pennsylvania Enacts Significant Changes to Contractor-Subcontractor Payment Act

Bio Representative Work Representative Matters Publications

Mason Avrigian, Jr. is a Principal and Co-Chair of the firm's Construction Practice Group and a member of the firm's Board of Directors. For over 30 years, he has represented owners, contractors, subcontractors, material producers, and other parties in construction matters and construction litigation in Southeastern Pennsylvania and New Jersey. He also handles general commercial litigation matters and real estate transactions and disputes. 

Mr. Avrigian has concentrated experience in matters involving general construction, heavy/highway construction, and utility construction. He counsels and represents these parties in all facets of construction projects, from bidding and contract drafting, to contract administration and construction management issues, to liens, claims, and dispute proceedings.

Mr. Avrigian has been honored by his peers as a Pennsylvania Super Lawyer in the Construction Litigation category for 2005, 2007-2013, and 2015-2024. In Chambers & Partners' 2023 USA Guide, he was ranked in “Band 1” for Construction Lawyers in Pennsylvania. He holds an AV Preeminent Peer Review Rating with LexisNexis/Martindale-Hubbell. The Best Lawyers in America© recognized Mr. Avrigian in its 2020, 2021, 2022, 2023, 2024 and 2025 editions in the categories of Construction Law and Litigation-Construction and was recognized as a Lawyer of the Year in the same categories in the 2022 and 2025 editions. For information about these selections and an overview of common third-party publications, rankings, and list methodologies, click here.

Read full bio > Read less >

Mr. Avrigian has handled a wide range of matters involving public and private construction projects and disputes. He serves both as counselor to a number of medium to large volume contractors and subcontractors ($10M to $200M annual volume) on various legal matters, including contracts, claims, disputes, labor/employment and business issues; and as litigation/claims counsel as needed. His areas of work include the following: 

  • Construction Contracts. Drafting, review, and negotiation of general contracts, subcontracts, construction management agreements, material supply agreements, design-build agreements, architectural and engineering services agreements and related construction contracts.
  • Bidding Disputes. Counsel and representation of contractors in the analysis of bidding issues and handling bidding disputes, including injunction actions relating to bid protests.
  • Public Works Projects. Representation of contractors in negotiations and litigation with public owners involving highway construction projects, bridge construction projects, utility construction projects, railroad and transit projects, and related public works’ projects.
  • Joint Ventures. Forming, organizing, and preparing contracts for joint ventures for public and private construction projects.
  • Claims. Analysis, preparation, submission, and prosecution of contractor and subcontractor claims for delay, disruption, inefficiency, and acceleration damages. Extensive work with claims’ consultants and expert witnesses in claim preparation and submission. 
  • Construction Defects Claims. Representation of owners, contractors, and subcontractors in claims relating to defective construction work on public, commercial and residential projects, including damages, remedial work, and remedies for breach of contractual duties and express and implied warranties. 
  • Material Producers and Suppliers. Representation of concrete, asphalt, and other construction materials producers in disputes regarding payments, quality, and sufficiency of materials and related issues.
  • Product and Equipment Claims. Representation of contractors and subcontractors in claims and disputes against manufacturers of equipment and products used on construction projects, including breach of contract and breach of warranty claims.
  • Scope of Work Issues. Representation of parties in negotiation of scope of work and change order issues and related claims and disputes. 
  • Mechanics’ Lien and Surety Bond Claims. Representation of owners, sureties, contractors, subcontractors, and material suppliers in the prosecution and defense of mechanics’ lien and surety bond claims. 
  • Trials/Dispute Proceedings. Jury and bench trials in state and federal courts; practice and trials before the Pennsylvania Board of Claims; arbitrations before the American Arbitration Association and other arbitration tribunals; mediations. 

Mr. Avrigian has handled the following matters: 

  • Lead counsel for Bilt-Rite Contractors, Inc. in the Pennsylvania Supreme Court decision in Bilt-Rite Contractors, Inc. v. The Architectural Studio, 866 A.2d 270 (2005) where the Court for the first time rejected contract privity requirements and adopted the cause of action of negligent misrepresentation for contractors against design professionals in Pennsylvania.
  • Represented highway contractor in claims against Pennsylvania Department of Transportation for delay damages, extra work and contract balance and in defense of liquidated damages assessment arising from $100 million highway reconstruction project.  
  • Represented utility subcontractor in claims against general contractor and New Jersey Department of Transportation arising from NJDOT bridge rehabilitation project.
  • Represented national homebuilder in connection with homeowner claims and in prosecution of claims against subcontractors for defective work.
  • Lead counsel for a contractor in claims against Port Authority for inefficiency and delay damages on bridge re-decking project arising from defective design.
  • Lead counsel for a contractor in claims against Department of Transportation for additional compensation arising from the performance of overrun quantities of contaminated waste materials.
  • Represented owner/developer of high-rise apartment building on the Delaware River in Philadelphia in scope of work and construction defect disputes with construction manager.
  • Represented contractor in successful defense and settlement of multiple Occupational Health and Safety Administration claims on a construction project.
  • Represented highway contractor in successful bid protest on $20.0 million Philadelphia International Airport project and secured award of contract for a client in the second phase of bid dispute.
  • Represented highway contractor in successful value engineering claim against Pennsylvania Department of Transportation before the Pennsylvania Board of Claims. Recovery of 100% of contractor’s claim.
  • Represented foundations subcontractor on a project involving foundations work (205 drilled concrete shafts) in a claim against a general contractor on new parking garage project in Newark, New Jersey. Successful recovery of arbitration award of contract balance and payment for extra work based on impacts to the work caused by geological conditions encountered.
  • Represented highway contractor in successful breach of contract claim against Pennsylvania Department of Transportation before the Pennsylvania Board of Claims arising from emergency repair work on I-95 resulting from a severe fire that shut the roadway down.
  • Represented electrical contractor in two federal court jury trials against product manufacturer to recover damages for defective connectors supplied for a public transit project in Philadelphia. Successfully recovered damages for contractor’s unabsorbed home office overhead under Eichleay.
  • Represented concrete placement subcontractor in successful arbitration claims against a general contractor and concrete testing inspection company to recover damages for costs incurred to remove concrete installed on project based on failures in contractually-required testing to be provided by a general contractor and testing firm.
  • Represented owner/developer of a large apartment project in Montgomery County, Pennsylvania against manufacturers of defective sprinkler heads. Successfully obtained favorable settlement while the jury was deliberating after a three-week trial.
  • "The 2018 Steel and Aluminum Tariffs — Do Contractors Have Remedies?," The Legal Intelligencer's Construction Law Supplement (August 2018)
  • “The Continued Erosion of Coverage Post-Indalex,” The Legal Intelligencer (August 11, 2015)
  • “Expert Communications in the Wake of Barrick,” The Legal Intelligencer, (August 5, 2014)
  • “Recent Developments in Pennsylvania Construction Damages,” The Legal Intelligencer (August 4, 2008)
  • “To Arbitrate or Not to Arbitrate? That Continues to Be the Question,” The Legal Intelligencer (August 6, 2007)

Practices

  • Construction
  • Commercial Litigation
  • Real Estate
  • Alternative Dispute Resolution

Industries

  • Heavy/Highway & Utility Construction
  • Construction
  • Real Estate

Education

  • J.D., Villanova University School of Law, 1987
  • A.B., Cum Laude, Muhlenberg College, 1984

Bar Memberships

  • Pennsylvania
  • New Jersey

Court Admissions

  • U.S. Supreme Court
  • U.S. Court of Appeals, Third Circuit
  • U.S. District Court for the Eastern District of Pennsylvania

News & Insights

Blogs & Thought Leadership Media & Articles News Speaking Engagements

Pennsylvania Construction Industry Reopening Date Now May 1, 2020

Coronavirus/COVID-19, Construction Contracts, and Legal Next Steps

Post & Schell Construction and Casualty Law Principals Among Faculty That Discussed Construction Law Trends and Issues at PBI Construction Litigation Seminar on Oct. 15

Pennsylvania Enacts Significant Changes to Contractor-Subcontractor Payment Act

Law360 Interviews John Dornberger and Mason Avrigian About Mid-Atlantic Growth of Construction Practice

Mason Avrigian, Jr. and Jeff Wallack Explore the Impact of the Trump Administration's Steel Tariffs on the Construction Industry for The Legal Intelligencer

Mason Avrigian Discusses the Impact of Steel and Aluminum Tariffs on Construction Industry with Law360

Fifty-one Attorneys Recognized as 2025 Best Lawyers in America by The Best Lawyers in America©. 

Mason Avrigian, Jr. Elected as a Member of Post & Schell's Board of Directors

Forty-Six Post & Schell Attorneys Named to the 30th Annual Edition of The Best Lawyers in America©
 

Chambers and Partners Recognizes Post & Schell Principals and White Collar and Health Care Practices in Chambers USA 2023 Guide

Thirty-Two Post & Schell Attorneys Named Pennsylvania Super Lawyers and Rising Stars for 2023

Thirty-Eight Post & Schell Attorneys Named 2022 Super Lawyers and Rising Stars for 2022

Forty-Six Post & Schell Attorneys Named to the 2022 Edition of The Best Lawyers in America©

Forty-One Post & Schell Attorneys Named Pennsylvania Super Lawyers and Rising Stars for 2021

Chambers and Partners Recognizes Post & Schell Principals and Health Care Practice in Chambers USA 2021 Guide

Thirty-Eight Post & Schell Attorneys Named to the 2021 Edition of The Best Lawyers in America©

Chambers and Partners Recognizes Post & Schell Principals, White Collar, and Health Care Practices in 2019 Chambers USA Guide

Post & Schell Appoints John W. Dornberger and Mason Avrigian, Jr. Co-Chairs of the Firm's Construction, Government Contracts & Surety Law Practice Group

Chambers and Partners Recognizes Post & Schell Principals and Health Care Practice in 2018 Chambers USA Guide

Mason Avrigian, Jr. and Jeffrey P. Wallack Join Post & Schell as Principals in Construction Practice Group

Paul Logan, Mason Avrigian, and John Dornberger Present on CARES Act Opportunities on Associated Pennsylvania Constructors' Webinar on April 10

Mason Avrigian Co-Presents on Commercial Arbitrations at PBI CLE Seminar on March 13

 

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