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113,891 companies71,393 contracting authorities2,564 BoQs with a specified brand27,690 planning offices360,321 awardsAwards up to 3 Oct 2026
Planning office
Ingenieurbüro Ralph Ziehn
Ingenieurbüro Ralph Ziehn from Weimar has received 2 public planning contracts since 2024 (as of 3 Oct 2026).
As of: · Source: official notices (Datenservice Öffentlicher Einkauf, CC0), EU Official Journal (TED) and procurement portals · How we count
99423 Weimar, ThuringiaBuilding servicesRegister No. 2353
2
planning contracts, since 15 Feb 2024
0
in the last twelve months
no value
no contract states a value
?
number of bids not stated
Contracts per year
The network of this office
Contracting authorities
Services
- Building services2
Contracting authorities from the award notices, services from the planning contracts.
Recently commissioned
| Date | Contract | Contracting authority | Value |
|---|---|---|---|
| 12 May 2025 | Vergebener Auftrag - Neugestaltung/Sanierung Marktplatz Arnstadt, 1. BA und 2. BA, Planungsleistungen BrunnentechnikSpecialist planning, other · Notice | Stadt ArnstadtThuringia | |
| 15 Feb 2024 | Technische Ausrüstungen Wasser- und AbwasserSpecialist planning, other · Notice | Stadtverwaltung Limbach-OberfrohnaSaxony |
The 2 most recent of 2.
Questions and answers
How many public contracts has Ingenieurbüro Ralph Ziehn received?
Ingenieurbüro Ralph Ziehn has received 2 public planning contracts since 2024.
Which contracting authorities does Ingenieurbüro Ralph Ziehn plan for most often?
Most contracts came from Stadt Arnstadt (1) and Stadtverwaltung Limbach-Oberfrohna (1).
Which planning services does Ingenieurbüro Ralph Ziehn provide?
Most contracts fall under “Specialist planning, other” (2).
In which German states does Ingenieurbüro Ralph Ziehn plan?
Most contracts came from Saxony (1) and Thuringia (1).