Overview

Horn Williamson & Collins is a woman-owned law firm serving clients throughout the Mid-Atlantic region. With a strong foundation in construction law and litigation, the firm represents homeowners, community associations, property owners, developers, contractors, subcontractors and businesses in matters involving real estate, construction and commercial disputes. Our attorneys combine industry knowledge with practical legal counsel to help clients assess risk, resolve complex problems and protect their interests, whether through strategic advice, negotiated resolutions or litigation.

Residential Construction Defects

Our Residential Construction Defects Group represents homeowners facing serious problems with the design, construction and performance of their homes. We handle claims involving water intrusion, building envelope and roofing failures, mold, structural and foundation problems, defective stucco, stone and masonry, drainage issues, code violations and other construction deficiencies. Our attorneys work closely with engineers, architects and other experts to investigate the cause and extent of defects, identify responsible parties and develop a strategy for repair and recovery. From newly constructed homes to major renovations and additions, we help homeowners navigate technically complex construction claims and pursue solutions that address both the physical damage to their property and the financial consequences of defective work.

Community Association Law

The Community Association Group serves condominium associations, homeowners associations and cooperative housing corporations in the legal issues that arise from owning, governing and maintaining shared communities. We advise boards and property managers on governing documents, rules and policies, covenant and rule enforcement, assessment collections, contracts, elections and governance matters, maintenance and repair responsibilities, and disputes involving owners, contractors and other parties. The group also represents associations in litigation and in construction defect claims involving common elements and community property. Our attorneys understand that association decisions often involve legal, financial and operational considerations, and we work with boards to provide practical guidance that protects the community while supporting effective governance.

Commercial Construction

Our Commercial Construction Group represents owners, developers, contractors, subcontractors, suppliers and other construction industry participants throughout the life of a project. We advise clients during contract negotiation and project development with an emphasis on clearly defining responsibilities, allocating risk and addressing potential issues before they become disputes. When problems arise, we handle claims involving payment, delays, disruption and inefficiency, change orders, defective work, project defaults, termination and other contract and performance disputes. Our attorneys represent clients in negotiation, mediation, arbitration and litigation, bringing an understanding of both construction law and the practical realities of complex construction projects to every matter.

Size:
21
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Practice Areas:
5
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Best Lawyers Recognized:
2

Rankings

National

Tier
3
National Ranking
Construction Law

Regional

Philadelphia

Tier
2
Philadelphia
Construction Law

Rankings

National

Tier
3
National Ranking
Construction Law

Regional

Philadelphia

Tier
2
Philadelphia
Construction Law

Practice Areas

Horn Williamson & Collins has been ranked by Best Law Firms for excellence in 1 specialty, reflecting the firm's commitment to delivering outstanding legal services.
Additionally, the firm provides services in these practice areas:
  • Business Litigation
  • Community Association Law
  • Condominiums and Community Associations
  • Construction Law
  • Consumer Protection Law

Individuals Recognized in The Best Lawyers in America®

Horn Williamson & Collins proudly has 2 lawyers recognized for their outstanding professional performance in the 2026 edition of The Best Lawyers in America®. This peer-reviewed honor highlights individual excellence and directly qualifies the firm for consideration in the prestigious Best Law Firms rankings. For over four decades, Best Lawyers has been the gold standard for recognizing top legal talent, serving as the cornerstone for Best Law Firms awards. Learn more about our rigorous Best Lawyers research and selection process.
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Offices & Contacts

Philadelphia, PA
One Commerce Square
32nd Floor 2005 Market Street
Philadelphia, PA 19103
United States
Wilmington, DE
1201 N. Orange Street, Suite 7697
Wilmington, DE 19801
United States
New York, NY
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