Lawyer profile
Dr. Ulf Hellmann-Sieg
Certified specialist in administrative law (Fachanwalt für Verwaltungsrecht), Rechtsanwälte Klemm & Partner mbB, Hamburg
- Checked in the official register of the German Federal Bar (BRAK) on 12 October 2026
- Overall rating 4.4 of 5
, from 70 reviews of the firm
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At a glance
- Languages
- English
- Focus areas
- Construction law (Baurecht), Real property law (Grundstücksrecht), Pollution control law (Immissionsschutzrecht), Local government law and municipal constitutional law (Kommunal- und Kommunalverfassungsrecht), Environmental law (Umweltrecht)
- Opening hours
- Monday to Thursday 9:00 -13:00 and 14 to 17Uhr
- Friday 9:00 to 15:00
Sources: the firm's website, retrieved on 24 October 2026; 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
4.4 of 5 Overall rating from 70 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. Ulf Hellmann-Sieg
- Professional title
- Lawyer (Rechtsanwalt)
- Specialist titles
- Certified specialist in administrative law (Fachanwalt für Verwaltungsrecht)
- Regional bar association
- Hamburg
- Admitted since
- 31 March 1995
- Law firm
- Rechtsanwälte Klemm & Partner mbB
- Firm address
- Reetwerder 23 A, 21029 Hamburg
- Phone
- 040-7254090
- Mobile phone
- 0171-2418679
- Fax
- 040-72540999
- hellmann-sieg@klemmpartner.de
- Website
- www.klemmpartner.de
- Identifier in the special electronic lawyer mailbox (beA)
- DE.BRAK.0b86c23f-926d-4cd8-b6b2-df913e2e1c46.956a
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.
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