Horn Williamson & Collins

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 clien

ts 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.

We’re pleased to welcome Alex Hubschmidt to Horn Williamson & Collins! We’re excited to have him on board and look forwa...
06/01/2026

We’re pleased to welcome Alex Hubschmidt to Horn Williamson & Collins! We’re excited to have him on board and look forward to the contributions he will make to our team and clients.

Alex is an associate in our Residential Construction Defect Group, representing homeowners and community associations in disputes involving defective construction, water intrusion, structural defects and other construction-related issues. https://bit.ly/3RZ5SgB

Please join us in welcoming Janesa Urbano to Horn Williamson & Collins!With more than 20 years of experience handling co...
05/28/2026

Please join us in welcoming Janesa Urbano to Horn Williamson & Collins!

With more than 20 years of experience handling complex commercial matters, Janesa strengthens the service and strategic counsel our firm provides clients across our commercial construction and real estate practices. Her addition further expands the firm’s capabilities in corporate transactions and contract negotiation and drafting.

We’re excited to have Janesa on board and look forward to the experience, insight and practical perspective she brings to our clients and team.

Another Horn Williamson & Collins CLE in the books! Today, construction partner Carter Williamson presented on mechanics...
05/28/2026

Another Horn Williamson & Collins CLE in the books!

Today, construction partner Carter Williamson presented on mechanics’ liens as part of our monthly in-house continuing education program. These sessions give our attorneys and paralegals the opportunity to stay sharp, share practical insights and continue building knowledge across our practice areas.

At Horn Williamson & Collins, professional development is part of our culture—and we’re proud to keep investing in our team through hands-on learning and collaboration.

Managing Partner Ryan Lockman recently attended ImpactPHL's Total Impact Summit, joining leaders and organizations focus...
05/27/2026

Managing Partner Ryan Lockman recently attended ImpactPHL's Total Impact Summit, joining leaders and organizations focused on the future of Philadelphia and the long-term impact of investment in our communities.

The summit centered on the idea of “Capital Orchestration for the Future of Place”—bringing together conversations around housing, infrastructure, development, neighborhood investment and economic growth across the region. As a Philadelphia-based firm, these conversations matter deeply to us. We live here, work here and represent the people, businesses and communities helping shape the future of our city every day.

Thank you to Kafi Lindsay and the entire ImpactPHL team for creating space for thoughtful dialogue, collaboration and forward-looking leadership around the future of Philadelphia.

Jennifer Horn and Denise Adamic, CMCA, AMS, PCAM recently attended Community Associations Institute - Keystone Chapter's...
05/27/2026

Jennifer Horn and Denise Adamic, CMCA, AMS, PCAM recently attended Community Associations Institute - Keystone Chapter's Ladies on the Links: Golf & Gather, where they were joined by Lisa Rayca and Tracy Bunsick for a great day on the course supporting the Pennsylvania Legislative Action Committee.

Horn Williamson & Collins is proud to have sponsored this year’s event, and our team appreciated the opportunity to connect with so many women across the community association industry.

Thank you to CAI Keystone for hosting such a fun and well-organized event!

It’s been a busy few weeks for Horn Williamson & Collins Managing Partner Ryan Lockman! Earlier this month, he attended ...
05/27/2026

It’s been a busy few weeks for Horn Williamson & Collins Managing Partner Ryan Lockman!

Earlier this month, he attended the Managing Partner Forum Leadership Conference in Atlanta, joining law firm leaders from across the country for conversations focused on the future of the legal profession.

Ryan returned with valuable insights and perspectives that will continue to shape conversations around leadership, growth and innovation at our firm. Thank you to the Managing Partner Forum for hosting such a thoughtful and engaging program.

Congratulations to our team members Ryan Lockman, Benjamin Gordon and Katie Shub on running the Broad Street Run yesterd...
05/04/2026

Congratulations to our team members Ryan Lockman, Benjamin Gordon and Katie Shub on running the Broad Street Run yesterday—one of Philly’s greatest traditions!

A full 10 miles through the city is no small feat. Katie’s 13th BSR, Ryan’s second and Ben’s first—thanks for sharing photos from the race, and the great turnout from your cheer squads made it even better.

Earlier this week, we celebrated our March and April birthdays with a Philly-style spread— Rita's Italian Ice & Frozen C...
05/01/2026

Earlier this week, we celebrated our March and April birthdays with a Philly-style spread— Rita's Italian Ice & Frozen Custard and pretzels from Philly Pretzel Factory.

A great way to take a break and spend time together. Happy birthday to everyone we celebrated! 🎉

This week, the Horn Williamson & Collins team showed up in a meaningful way for Denim Day, a global initiative focused o...
05/01/2026

This week, the Horn Williamson & Collins team showed up in a meaningful way for Denim Day, a global initiative focused on raising awareness about sexual assault and challenging harmful misconceptions.

We were proud to support our own Kathryne Hemmings, who serves on the Board of Directors of The Summer Willis Foundation, by wearing denim and contributing to her Denim Run fundraiser—helping her reach her goal in support of survivors of sexual violence.

New name. Same foundation.We’re excited to share that Horn Williamson LLC is now Horn Williamson & Collins—marking an im...
04/28/2026

New name. Same foundation.

We’re excited to share that Horn Williamson LLC is now Horn Williamson & Collins—marking an important step forward in our firm’s growth.

This milestone reflects the leadership and impact of Matthew Collins, as well as the continued strength of our team and the work we do for clients across the Mid-Atlantic.

As we enter this next chapter, our focus remains unchanged: delivering practical, strategic counsel to homeowners, businesses and community associations facing complex construction and legal challenges.

Read more about the announcement: https://bit.ly/3QDSVIv

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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