Lawyer profile
Dr. Derk Siebert
Certified specialist in construction and architects' law (Fachanwalt für Bau- und Architektenrecht), Certified specialist in commercial and company law (Fachanwalt für Handels- und Gesellschaftsrecht), MARX SIEBERT Rechtsanwälte Part mbB, Hamburg
- Checked in the official register of the German Federal Bar (BRAK) on 12 October 2026
- Overall rating 4.3 of 5
, from 4 reviews of the firm
More Construction and architects' law specialists in Hamburg
- Dr. Jens Biederer
- Michael Aßmann
- Dr. Jörn Kreutzfeld
- Jürgen Reetz
- Hans-Christian Schwarzmeier
- Dr. Carl Christian Voscherau
At a glance
- Languages
- English
- Focus areas
- Construction law (Baurecht), Public building and planning law (Baurecht (öffentliches)), Real property law (Grundstücksrecht), Business and corporate law (Wirtschafts- und Unternehmensrecht), Economic administrative law (Wirtschaftsverwaltungsrecht)
Sources: Deutsche Anwaltauskunft des Deutschen Anwaltvereins, retrieved on 12 October 2026. Focus areas and opening hours are the lawyer's or firm's own words. Focus areas from the directories' fixed lists have an English label with the German term in brackets; all others stay in German.
Location of the firm
Reviews of the firm
4.3 of 5 Overall rating from 4 reviews on 1 platform. How we calculate the overall rating
Google
These reviews apply to the firm, not to individual lawyers.
Details from the official lawyer register
- Name
- Dr. Derk Siebert
- Professional title
- Lawyer (Rechtsanwalt)
- Specialist titles
- Certified specialist in construction and architects' law (Fachanwalt für Bau- und Architektenrecht), Certified specialist in commercial and company law (Fachanwalt für Handels- und Gesellschaftsrecht)
- Regional bar association
- Hamburg
- Admitted since
- 24 September 1997
- Law firm
- MARX SIEBERT Rechtsanwälte Part mbB
- Firm address
- Auguststraße 14, 22085 Hamburg
- Phone
- 040-229280
- Fax
- 040-22928100
- Website
- www.marx.de
- Identifier in the special electronic lawyer mailbox (beA)
- DE.BRAK.f3d3ed67-1b71-4769-ba88-9c6a35b119ed.83bd
Source: Official lawyer register of the German Federal Bar under section 31 of the Federal Lawyers' Act (BRAO). The register is kept in German. We show names and addresses as the register gives them and add an English description to German professional titles.
Other lawyers at this firm
Is something wrong? Request a correction. We change details from the register only when they change there.
Not sure who fits your case?
Describe your case in English. Our assistant asks a few questions, writes a German summary for the lawyer and shows matching lawyers.