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Katarzyna Marzec

attorney-at-law / partner

Her profiessional interests revolve around European Union law, construction law and court proceedings related to investment processes. Katarzyna protects clients’ interests in disputes arising ou of FIDIC Rules, involving infrastructural projects, shopping malls and expressways.

Katarzyna represents clients before arbitration courts, including the Court of Arbitration at the Polish Chamber of Commerce in Warsaw, as well as in reprivatization proceedings before administrative courts. She has recently advised Polimex Mostostal and Strabag Group in cases related to the performance of construction works contracts, and construction and design agreements drafted in accordance with the FIDIC Rules, as well as cooperation with subcontractors, investors and administrative authorities.

She has conducted due diligence investigations of numerous real properties, including ones intended for large retail developments and office buildings. She has also taken part in corporate due diligence analyses of producers of steel structures for civil engineering and other industries.

Katarzyna is fluent in English.

Graduate of the Faculty of Law and Administration at Jagiellonian University in Kraków. She also completed training courses in European funds: “European Funds for Small Enterprises” and “EU Project Management” (“European Funds Management Academy” module).


Practice Areas



Advising Griffin Group on the purchase transaction of the property located at Miedziana St. in Warsaw, from Zakłady Graficzne “Dom Słowa Polskiego". The property possess the total area of more than 15 thousand square meters along with the buildings located on that property. BWW also advised Griffin ...

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Dispute concerning the performance of a construction investment within the area of Elektrownia Kozienice

Representing Polimex-Mostostal in a dispute with a subcontractor, concerning the performance of a construction investment within the area of Elektrownia Kozienice.

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Dispute between a consortium and GDDKiA

Representing Capgemini Polska in a dispute between a consortium of which Capgemini Polska was a part and GDDKiA, regarding improper performance of a software implementation agreement.

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act BSWW in transaction comprising sale of 11 A-class office properties

act BSWW advised management boards of disposed companies on the sale of completed and under-construction office buildings owned by Buma development company to fund managed by Partners Group, the global private markets investment manager. The transaction comprised the s...


act BSWW advised Echo Investment on its Łódź-based project

Echo Investment, Poland’s leading developer, has laid the cornerstone for Fuzja, a section of Łódź that will combine modern urban features with the historical spirit of Księży Młyn (a complex of textile factories). The company has started restoring the former Scheibler ...


act BSWW ranked in The Legal 500 EMEA 2019

We are delighted to announce that we have received industry recognition from The Legal 500 EMEA 2019 in seven categories and numerous individual recommendations for our practitioners. Recommendations for the law firm: - banking and finance - capital markets - comm...

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