Alexander Leidig



Studied Law in Bonn. 2002 first State examination, 2004 second State examination. Research assistant at the Institute for Civil Procedure Law at the University of Bonn, 2004 to 2005. Lawyerat Redeker Sellner Dahs & Widmaier in Bonn, 2005 to 2006. Junior notary at the Rhenish chamber of notaries, 2007 to 2008.

Joined the firm again in 2008.


Real estate business law, real estate law, comprehensive contract drafting and negotiation management in real estate development, acquisition, sale, construction and use of real estate objects, private construction law (in particular legal advice during construction), commercial (contract law for procurement, production and distribution of goods).

Recommended by Legal 500 in construction and real estate law/​construction law–including dispute resolution. Awarded as “Law Firm of the Year 2022 in Construction Law” by Handelsblatt/​Best Lawyers. Listed by Wirtschaftswoche as “Top Lawyers in Construction Law (2024)" and “Law Firm of the Year in Construction Law (2024)".

Member of the building and real estate law working group of the German Bar Association, member of the institute for building law Freiburg in Breisgau association, member of the board of the Bonn Bar Association, head of the construction and architectural law working group of the Bonn Bar Association.

Lecturer at the Philipps‐University Marburg in the LL.M.‐course Building Law and Construction Supervision and a lecturer at the Federal University of Applied Sciences for Public Administration in the Department of Civil Law.

Real estate project management at Bayer AG, providing legal advice in connection with the divestiture of crop science production sites to BASF. Advising DAX companies on real estate transactions. Legal project management for pilot projects, providing ongoing legal advice during the construction of the new German federal motorway A 14 in Brandenburg and the new B 3 in Hesse for the Federal Republic of Germany (total project volume € 40m). Providing the city of Bonn legal advice on the completion of WCCB and the restoration of the Beethovenhalle. Providing ongoing legal advice to a major German automotive supplier on all aspects of contractual law and damages.

Permanent real estate legal Advising several DAX‑​listed corporations on project developments of industrial sites and infrastructure objects. Ongoing advice to several developers on the Development of commercial and residential real estate.


Publications: co‐author of commentary Messerschmidt/​Voit, Privates Baurecht, commment on §§ 631 ff. BG, co‐author of the Beck’schen Formularbuch Zivilverfahren mit Auslandsberührung, co‐author of Messerschmidt/​Niemöller/​Preussner, Honorarordnung für Architekten und Ingenieure. Several additional publications on private construction law.


¹ member of the partnership with limited professional liability

Alexander Leidig

Alexander Leidig
specialist attorney for construction and architectural law

T +49 228 72625‐167
F +49 228 72625‐99

Rosemarie Käbel