JLSW Janaszczyk Lis i Wspólnicy is proud to announce its continued recognition in the Legal 500 EMEA 2025 rankings. For the eighth consecutive year, the firm has been distinguished in the Construction category, reaffirming its position as a trusted and leading advisor in the Polish construction law sector.

This longstanding recognition reflects the firm’s unwavering commitment to delivering excellence, navigating complexity, and providing pragmatic, strategic legal support to clients across the construction industry.

“The team at JLSW Janaszczyk Lis & Wspólnicy is instructed by both suppliers and investors to provide advice and representation in complex construction matters. The firm’s work includes supervising the construction process under the FIDIC model, project financing and disputes concerning contractual penalties. Marcin Lis jointly leads the team with an active project financing portfolio, alongside Tomasz Janaszczyk, who regularly acts for domestic and international companies on large-scale projects.” — Legal 500 EMEA 2025 Editorial

This achievement would not be possible without our exceptional team—professionals whose depth of knowledge, teamwork, and drive allow us to successfully navigate even the most demanding projects. We thank every member of our firm for their ongoing dedication and pursuit of the highest legal standards.

We also extend our deepest gratitude to our clients. Your trust, your ambitions, and your extraordinary projects continue to inspire us and shape the way we deliver legal services.

What Clients Are Saying:

“Professionalism at the highest level.”

“Knowledge and commitment.”

“The greatest strength of the JLSW team lies in their ability to collaborate effectively, combining diverse expertise to deliver comprehensive solutions.”

“Tomasz Janaszczyk… is distinguished by his sharp analytical skills, allowing him to quickly identify key issues and craft effective strategies. His ability to communicate complex legal concepts clearly and persuasively sets him apart from the competition.”

“The practice fosters a co-creation environment where client input is valued, resulting in solutions that truly reflect client needs.”

“The team excels at navigating change… this agility ensures that they remain ahead of the curve and can respond effectively to evolving challenges.”

“Absolutely unique combination of knowledge, experience and business-oriented problem-solving. Instant communication and easy-to-understand advice.”

“We have been working with the JLSW law firm for more than 10 years and treat them more as advisors than lawyers. Tomasz Janaszczyk deserves special mention for his in-depth knowledge and many years of experience.”

At JLSW, we are committed to building more than just legal frameworks—we build lasting partnerships, practical strategies, and real-world solutions. This eighth-year recognition energizes us to continue setting the standard for construction law in Poland and beyond.

Together, we build strong foundations – in law, in business, and in trust.