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Horn Williamson, LLC

United States 2025

Overview

Content is provided by the firm.

EXPERIENCE NAVIGATING CONSTRUCTION AND COMMUNITY ASSOCIATION CHALLENGES

HORN WILLIAMSON, LLC is a law firm located in Center City Philadelphia that serves clients throughout the Mid-Atlantic region. We focus our practice on all aspects of construction claims, commercial disputes, and community association law. We represent business owners, developers, homeowners, general contractors, subcontractors, material suppliers, as well as community associations and cooperatives. Our firm provides clients with the highest quality legal representation and is committed to excellence both in and out of the courtroom. With more than eighty-five years of combined legal experience in matters related to the construction and community association industries, we are committed to helping our clients resolve their legal issues in a prompt and efficient manner.

A PRACTICAL APPROACH TO RESOLVING LEGAL ISSUES

We understand that litigation is not always in our clients’ best interest. We take a practical and straightforward approach to resolving legal issues to best serve our clients’ needs. We will thoroughly evaluate your situation, listen to you and inform you of the risks of pursuing certain strategies.

FOR COMMERCIAL CLIENTS: A FRESH INTEGRATED APPROACH TO TRADITIONAL LAW PRACTICE

Whether Horn Williamson attorneys are representing large and mid-sized commercial contractors, property owners, developers, business owners or employers, we are ready at every business milestone, and at every stage of litigation. Our attorneys assist clients with an array of construction matters including contract review and negotiation, scopes of work, change orders, delays, mechanics’ liens and payment disputes. Prior to construction, our attorneys draft and negotiate the full panoply of construction contracts from AIA, modified AIA, consensus to individualized contracts. During construction, we assist with project documentation and claims. Through Judge Gene D. Cohen (Ret.), the firm offers alternative dispute resolution for Fee disputes, Intra-law firm difficulties and Inter-law firm disputes. The Firm offers construction accident defense, representation during OSHA investigations and other regulatory matters, as well as ERISA litigation.

FOR RESIDENTIAL CLIENTS: ANALYTICAL APPROACHES BASED IN BUILDING SCIENCE AND ENGINEERING

Horn Williamson offers a unique and vigorous approach to protecting homeowners’ most valuable investment. The firm fills an unmet market need for experienced construction attorneys who represent families whose homes are damaged by water intrusion and building envelop defects. Combining analytical approaches based in building science and engineering, as well as years of experience representing the construction industry, Horn Williamson attorneys draw on unique skill sets to solve complex and thorny problems.

FOR COMMUNITY ASSOCIATION CLIENTS:

Our Community Association Group provides our clients with practical and strategic legal guidance on every aspect of Community Association Law. From day-to-day operations to multimillion dollar construction defect litigation and everything in between, we stand ready to guide community associations through all their legal challenges. We become an integral part of our clients‘ professional team.

Rankings

Horn Williamson, LLC is nationally ranked in 1 practice areas and metro ranked in 1 practice areas. Best Law Firms rankings are based on a rigorous evaluation process.

Read how Best Law Firms ranks firms

National Rankings

Tier 3
Tier 3 for Construction Law

Metro Rankings

Philadelphia
Tier 2 for Construction Law

Rankings

National Rankings

Tier 3
Tier 3 for Construction Law

Regional Rankings

Philadelphia
Tier 2 for Construction Law

Practice Areas

The below are areas of legal specialty volunteered by the firm and do not designate a specialty in which a Best Law Firms ranking is held.
  • Arbitration
  • Commercial Litigation
  • Community Association Law
  • Construction Law
  • Consumer Protection Law
  • Employee Benefits (ERISA) Law
  • Government Contracts
  • Litigation - Construction
  • Litigation - ERISA
  • Litigation - Real Estate
  • Mediation
  • Personal Injury Litigation - Plaintiffs
  • Real Estate Law

Individuals Recognized in The Best Lawyers in America®

Horn Williamson, LLC has 3 lawyers recognized for individual performance in the 2025 edition of The Best Lawyers in America®. By receiving this Best Lawyers recognition from their peers for their professional excellence, these lawyers made Horn Williamson, LLC eligible for evaluation for Best Law Firms rankings. For almost two decades, Best Lawyers has awarded these singular accolades, making them the foundation of our Best Law Firms awards. Read more about our Best Lawyers process here.
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Main Location

Philadelphia, PA
Two Penn Center, Suite 1700
1500 JFK Boulevard
Philadelphia, PA 19102
United States
215-987-3800 Call our Philadelphia, PA location at 215-987-3800 Get Directions Get directions to our Philadelphia, PA location

Management and Personnel

Founding Partner
Jennifer M. Horn
Managing Partner
Ryan Lockman
Chair of Community Association Practice Group
Matthew C. Collins
Inside General Counsel
Judge Gene D. Cohen (Ret.)

Contacts

Director of Operations
Jennifer Allegra 215-987-3800
Director of Community Association Services/Marketing
Denise Adamic 484-845-5708
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