Horn Williamson & Collins

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Horn Williamson & Collins HORN WILLIAMSON, LLC is a law firm located in Center City Philadelphia that serves clients throughout the Mid-Atlantic region. Through Judge Gene D.

Representing homeowners, business owners, contractors, subcontractors, suppliers and community associations in construction claims, residential defects and commercial disputes. We focus our practice on all aspects of construction claims and commercial disputes. We represent business owners, developers, homeowners, general contractors, subcontractors, and material suppliers. 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 85 years of combined legal experience in matters related to the construction industry, 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 listen to you, thoroughly evaluate your situation, 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. Our Zoning—Land Use—Development attorneys advise clients on all facets of land use, zoning and development matters throughout the Delaware Valley, navigating clients through the development approval process. 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 envelope 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.

The Horn Williamson & Collins team escaped the office this past Wednesday for a fun night at Painting with a Twist! 🎨We ...
10/02/2026

The Horn Williamson & Collins team escaped the office this past Wednesday for a fun night at Painting with a Twist! 🎨

We spent the evening painting and enjoying time together outside of the usual workday, ending the night with 16 very different takes on the same Cape May lighthouse. It was a great opportunity to connect with each other in a relaxed, easy setting without the focus being on work or networking.

A big thank you to our instructor, Khia, who was fantastic! And thank you to everyone from HWC who came out and made it such an enjoyable night.

A recent The Wall Street Journal article highlights a construction industry perspective that homeowner concerns about co...
09/04/2026

A recent The Wall Street Journal article highlights a construction industry perspective that homeowner concerns about construction defects are “overblown.” However, the builders’ own SEC filings tell a different story.

In our latest blog, Ryan Lockman looks beyond what builders are saying publicly to what their SEC filings disclose, including significant reserves for construction defect and warranty claims and rising legal expenses.

What do the numbers reveal—and what could they mean for homeowners dealing with water intrusion, mold or other signs of construction defects. Read Ryan’s analysis here:

Ryan Lockman examines what major homebuilders’ SEC filings reveal about construction defect and warranty claims—and what it means for homeowners.

Congratulations to our three attorneys who have been recognized in the 2027 editions of The Best Lawyers in America® and...
08/21/2026

Congratulations to our three attorneys who have been recognized in the 2027 editions of The Best Lawyers in America® and Best Lawyers: Ones to Watch® in America!

Jennifer Horn and Carter N. Williamson are recognized in Best Lawyers for Construction Law, while Lauren McDowell is recognized in Ones to Watch for Workers’ Compensation Law - Claimants. Lauren is an associate in our Residential Construction Defects Group representing homeowners.

Best Lawyers honorees are selected through a peer-review process that evaluates professional excellence within specific practice areas and geographic regions. Ones to Watch recognizes attorneys earlier in their careers for professional excellence in private practice.

What happens when a construction-defect dispute plays out in front of millions of people? In her latest blog, Kathryne H...
08/19/2026

What happens when a construction-defect dispute plays out in front of millions of people?

In her latest blog, Kathryne Hemmings looks at the viral dispute involving social media creators The Chats Fam: Momchats and Dadchats, Dillon and Suzanne White, and their newly built Minnesota home—and why their very public experience may feel familiar to homeowners dealing with construction defects of their own.

From documenting problems and coordinating inspections to navigating warranty repairs, experts and legal options, these disputes can quickly become overwhelming. Kathryne explains how involving experienced construction counsel early can help homeowners understand their options, protect their rights and focus on what matters most: their home and family.

I started following Dillon and Suzanne White (otherwise known as , , and ) for their hilarious and relatable content, including an attorney father trying to keep up with his whip-smart wife, disarmingly clever kids, and allegedly murderous dog, Goose. Recently, however, my...

As summer winds down, we want to thank our summer associate, Max Neuman, for all of his hard work and contributions to H...
08/14/2026

As summer winds down, we want to thank our summer associate, Max Neuman, for all of his hard work and contributions to Horn Williamson & Collins over the past few months!

We gathered for a farewell happy hour earlier this week to thank Max for his hard work, professionalism and dedication, which consistently impressed our team.

Thank you for a great summer, Max. We wish you continued success as you return to law school for the year ahead!

Community association rules and regulations are among a board's most effective governance tools—but only if they evolve ...
07/29/2026

Community association rules and regulations are among a board's most effective governance tools—but only if they evolve alongside changing laws, technology and homeowner expectations.

In his article, originally published in Community Associations Institute - Keystone Chapter's Community Assets magazine, Matthew Collins explores how outdated or unenforced rules can create unnecessary conflict, increase liability and expose associations to legal risk. He also shares practical considerations for keeping governing documents current while balancing compliance with the realities of modern community living.

Read the full article:

Originally published in Community Assets magazine, Matthew Collins explains how outdated community association rules can create legal risk.

We are excited to announce the opening of Horn Williamson & Collins' New York office! Located in Midtown Manhattan, our ...
07/15/2026

We are excited to announce the opening of Horn Williamson & Collins' New York office! Located in Midtown Manhattan, our newest location strengthens our regional presence and our ability to serve clients throughout New York and the surrounding region.

This follows the recent addition of partner Janesa Urbano, whose established New York client base and experience in commercial litigation, business transactions, construction and real estate further expand the services we provide clients.

As our firm continues to grow, our focus remains the same: delivering practical, responsive counsel and building lasting relationships with the clients and communities we serve.

📍 295 Madison Avenue, 12th Floor, New York, NY 10017

Complying with New York's Local Law 11 often requires more than scheduling a façade inspection. When neighboring propert...
07/10/2026

Complying with New York's Local Law 11 often requires more than scheduling a façade inspection. When neighboring properties are involved, negotiating an access agreement can become a critical part of the process.

In her latest blog, Horn Williamson & Collins NY Partner Janesa Urbano discusses three key considerations for property owners, including what an access agreement should cover, how RPAPL Section 881 can help resolve access disputes, and why the City's "Get Sheds Down" initiative makes planning more important than ever.

Read the full blog:

Learn how Local Law 11 access agreements and RPAPL Section 881 help New York property owners complete required façade inspections and resolve access disputes.

Two of our construction attorneys, Janesa Urbano and Kathryne Hemmings, recently joined fellow construction professional...
07/06/2026

Two of our construction attorneys, Janesa Urbano and Kathryne Hemmings, recently joined fellow construction professionals for a behind-the-scenes tour of the restoration work at George Washington's Headquarters in Valley Forge National Historical Park, hosted by the CFMA Philadelphia Chapter.

The tour offered a unique look at the planning, craftsmanship, and collaboration required to preserve one of our nation's most significant historic landmarks. As our country commemorates its 250th anniversary, it served as a meaningful reminder of the importance of preserving the places where our history was made.

Thank you to the CFMA Philadelphia Chapter and Mara Restoration, Inc. for an outstanding experience.

What does sustainable growth look like for a law firm?After attending the Managing Partner Forum's 2026 Leadership Confe...
07/06/2026

What does sustainable growth look like for a law firm?

After attending the Managing Partner Forum's 2026 Leadership Conference, our managing partner, Ryan Lockman, reflected on the leadership lessons that matter most—not just for growing a business, but for building a culture where people are trusted, supported and empowered.

In his latest blog, Ryan shares why investing in people remains the foundation of long-term success and how those principles continue to shape the way we lead, grow and serve our clients at Horn Williamson & Collins.

Read the blog:

Managing Partner Ryan Lockman shares why law firm growth depends on investing in people, empowering teams and building leadership that scales.

Address

2005 Market Street, 32nd Floor
Philadelphia, PA
19103

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12159873800

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