C5-01-2

Since June 2022, Anja Rosen and Frauke Kaven formed C5 to creatively support the building industry with sustainability for more climate and environmental protection, sufficiency, circular economy, building culture and positive spaces.

Anja Rosen

Prof. Dr.-Ing. Architect and
DGNB Auditor

By combining science and practice, Anja brings innovative directions into each project and supports builders and planners to plan to sustainable buildings. As a founding member of the re!Source Stiftung e.V. and active member of the DGNB, she is committed to a resource turnaround in the construction industry.

AR

Biography

2023

Professor for Circular Construction at the MSA Münster School of Architecture

2022

CO-MANAGING DIRECTOR C5 
CREATIVE CONSULTING FOR CIRCULAR AND CERTIFIED CONSTRUCTION
Foundation of C5 GmbH with Frauke Kaven

2020

Promotion - Development of the Urban Mining Index

2013 – 22

CO-DIRECTOR & DGNB AUDITOR 
energum, sustainable construction group in the agn group 
agn Niederberghaus & Partner GmbH, Ibbenbüren, Germany
Anja combines her teaching and research activities with her practical work.

Awards

2022

URBAN MINING DESIGN RATHAUS KORBACH
Finalist Deutscher Nachhaltigkeitspreis Architektur

2021

URBAN MINING INDEX
DGNB Sustainability Challenge in the category Research 

2020

ATLAS RECYCLING (co-responsible published)
Hans Sauer Award



Frauke Kaven

Dipl.-Ing. Architect and
DGNB Auditor

With many years of international experience in architectural and strategic planning of educational and healthcare buildings, offices, and administrative buildings, as well as urban quarters, Frauke supports the area of certification and competition support.

FK

Biography

2022

CO-MANAGING DIRECTOR C5
CREATIVE CONSULTING FOR CIRCULAR AND CERTIFIED CONSTRUCTION
foundation of C5 GmbH with Anja Rosen
DGNB AUDITOR 

2015 – 21

MÜNSTER
agn Niederberghaus & Partner GmbH / energielenker projects GmbH
data center, offices, institutional buildings, clinic, renovation of existing buildings, school building in timber construction & competitions 

2007 – 15
 

NEW YORK
Perkins Eastman Architects
urban planning, residential construction, hotel, strategic planning health care facilities, exterior & interior medical center

2009 

LEED
Associate Professional

2003 – 07

SHANGHAI
Arquitectonica / Mada Spam LLC / BAU Brearley Architects & Urbanists high-rise buildings, mixed-use quarters, shopping mall & competitions

Christina
Freese

aspiring Dipl.-Ing. Architecture and
DGNB-Consultant

With a focus on sustainable building and construction, Christina consolidates her studies of architecture with her master thesis „The sustainable use of building materials. A study on the deconstructability of wood-concrete composite slabs“ at the Graz University of Technology in cooperation with Brüninghoff GmbH & Co. KG. With us she oversees certification and is on her way to become DGNB auditor.

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Publishings

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Die Ökonomie des Urban Mining. Das Modellprojekt Rathaus Korbach. Beitrag von Anja Rosen …
1 min read
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Urban Mining für den Rathaus-Neubau in Korbach. Gespräch mit Anja Rosen & Marc …
1 min read
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Gebäude als Materialressource Autorin Anja Rosen. A2 Rückbau, Verwertung und Entsorgung im Bauwesen, …
1 min read
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Urban Mining Design in der Praxis. Text von Anja Rosen & Marc Matzken …
1 min read
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Urban Mining - wann schließt sich der Kreis?Artikel von Annette Hillebrandt & Anja …
1 min read

Memberships

DNGB-1
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C5 makes it easier to build sustainably. We offer creative consulting for circular and certified construction.

C5 GmbH
Bült 13
48143 Münster
+49 251 37.977.366

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