The Aachen Housing and Settlement Association is a major Catholic housing organization in Germany. It was founded in 1949 with the mission of helping to provide affordable housing and related amenities to broad segments of the population and specific groups, and to play an active role in shaping a well-ordered living environment.

More than 850 innovative and sustainable architects and engineers make up the agn Group.
They are convinced that only genuine general planning can meet the complex requirements of today's construction projects. Interdisciplinary planning means that architects and engineers work as equals. Only by understanding the other disciplines and trades involved is it possible to achieve optimized results for the client in the project. Together with the client, they see finding targeted and tailor-made solutions as their most important goal and achievement. Holistic approach and sustainability are their
planning principles.

With over 23,300 members and around 14,500 apartments, Bauverein der Elbgemeinden is Hamburg's largest housing cooperative. For over 125 years, they have been creating affordable living space in and around Hamburg, providing a lifelong home for many people. At the same time, they offer numerous employees a professional home with enriching jobs. They do not think in quarters, but in generations. 

Bauwens is a family business founded in 1873 that develops, plans, builds and operates real estate for living, working and shopping throughout Germany. At locations in Cologne and the Rhine-Ruhr region as well as in Berlin, Munich, Hamburg and Frankfurt, a total of 400 employees, around 290 of them in Cologne, work for business and private clients.

 

As a Hanover-based company, bauwo Grundstücksgesellschaft mbH has been developing solutions for individually tailored projects in the real estate sector for 30 years. They are active throughout Germany in the field of project development for logistics, offices and hotels. Thanks to their expertise and experience, as well as innovative thinking and the latest technical standards, they offer you all services from a single source – from obtaining building permits to your finished property.

BNP Paribas Real Estate is a leading international real estate service provider that offers its clients comprehensive services in all phases of the real estate cycle: Transaction, Consulting, Valuation, Property Management, Investment Management and Property Development. With 5,300 employees, the company supports owners, tenants, investors and the public sector in their projects thanks to local expertise in 30 countries (own locations and alliance partners) in Europe, the Middle East and Asia. BNP Paribas Real Estate is part of the BNP Paribas Group. 

The Association of German Garden Architects was founded in 1913. It changed its name to the Association of German Landscape Architects (bdla) in 1972. Today, the Association of German Landscape Architects (bdla) has approximately 2,200 members across its 13 regional associations, including about 800 freelance landscape architects. It serves as a voice for self-employed, salaried, and civil servant landscape architects, as well as for the next generation of professionals.

The association engages in dialogue with policymakers, government agencies, the business community, and the public. The bdla represents the interests of the profession and, for example, contributes its expertise to legislative proposals related to construction and planning. It also highlights the extensive expertise of landscape architects in addressing key challenges for the future, such as climate adaptation, the energy transition, and urban growth. 

Happy living: Under this motto, BUWOG Bauträger GmbH realizes high-quality new construction projects throughout Germany and creates new living space. In the process, BUWOG builds condominiums and rental apartments that are incorporated into the existing housing stock. In various neighborhoods, we also create daycare centers for children and provide play, leisure and recreation areas, thus ensuring an attractive living environment for all generations.

 

Dälken Architektur + Generalplanung is an independent, owner-managed firm that designs functional and cost-effective building construction projects nationwide for industrial and commercial clients, general contractors, and public building owners.

With an interdisciplinary team of 140 employees at its locations in Georgsmarienhütte, Cologne, Münster, and Stuttgart, the firm provides all planning services in accordance with the HOAI as well as supplementary consulting services.

Deka Immobilien is part of the Deka Group and specialises in property investments.

As one of the largest globally active property fund companies in Europe, they have been creating sustainable added value for institutional and private investors, users and business partners for over 50 years.

With their management expertise, they are characterised by extensive experience as a property investor and asset manager in a wide variety of markets and across investment cycles. 

Deutsche Post AG, headquartered in Bonn, is a listed logistics and postal company that emerged from the former Deutsche Bundespost authority on January 1, 1995. The Group has been operating under the name Deutsche Post DHL Group since 2015.

 

The German Sustainable Building Council (DGNB) is a central knowledge platform for sustainable building. To promote sustainable building, the non-profit organization has established a certification system for the assessment of buildings and urban districts with a particular focus on environmental impact, use of resources, efficiency and user comfort: the DGNB certificate.

 

Through a wide range of applied building physics research projects, the Fraunhofer Institute for Building Physics IBP develops scientifically sound, intelligent, and effective solutions for the construction industry and related sectors. Our experts know that the challenges are significant—and that practical solutions addressing advancing climate change, the need for affordable, healthy housing, sustainable and environmentally friendly building materials, and concepts for a functioning circular economy are more in demand than ever.

Nationwide service provider for infrastructural, technical and commercial facility management. With around 12,900 employees and 81 locations and service points, they have a nationwide presence.

Greyfield is an innovative company in the German real estate market with a specific focus on existing properties. Creative ideas, clear yield orientation and architectural flair are the principles with which Greyfield creates marketable investments from ordinary and unattractive properties with redevelopment potential.
Real estate in which others see only difficulties, Greyfield recognizes as potentials and transforms them into valuable properties.
 

Professional project management in the construction industry

As a medium-sized engineering firm, Hitzler Ingenieure stands for professional project management in the construction industry with interesting contracts throughout Germany and Austria.

Instone Real Estate is a listed German project developer for residential real estate based in Essen. 

 

LXSY Architects focus on the field of circular design and construction and are actively committed to the transformation toward a climate-friendly construction industry that conserves resources and avoids waste—in short, toward circular construction. As ambassadors of the construction revolution, they are setting new standards for the future of architecture and challenging established practices in the construction industry. They transform existing buildings and are pioneers of circular construction. They view every existing building as a material repository. They consider the entire life cycle of a structure, incorporate materials from the past, and plan today for the reparability and reuse of tomorrow. 

With a strong heritage as a family business and deeply rooted values, the Otto Group looks to the future with confidence. Over the past 75 years, the company has evolved from a catalog mail order business into an internationally active digital retail and services group with 36,300 employees and a large number of key companies, brands, and holdings in over thirty countries, primarily in Germany, the rest of Europe, and North America. Its business activities span the segments of platforms, brand concepts, retailers, services, and financial services. In the 2024/25 fiscal year (February 28), the Otto Group generated sales of €15 billion. As the largest online retailer of European origin, it is shaping the digital commerce and digital services of the future with its strength, market significance, and values.

With a team of approximately 20 architects, the Cologne-based planning firm provides services across all phases of the HOAI. Pannhausen + Lindener Architekten works for investors, the public sector, and institutional clients—from feasibility studies through to project completion.

In addition to new construction projects, the firm—led by Claudia Pannhausen—primarily plans and implements energy-efficient renovations, as well as expansion, remodeling, and repurposing projects in existing buildings. As a general planner, the firm also offers specialized planning services from a single source—building services, building physics, structural engineering, and fire protection. Its portfolio includes office and commercial buildings, sports facilities, schools, hotels, and residential buildings.

For 30 years, steg Hamburg has been working on districts and properties that focus on people. In line with the dynamic processes in urban and real estate development, they create individual solutions in balance between the parties involved. To be able to do this, you have to understand how cities and real estate work - and they do.

Werner Sobek's work is characterized by high-class design, innovative constructive solutions and integral concepts for minimizing emission generation and material consumption. Special emphasis is placed on the design and planning of the supporting structure, façade and technical building equipment, as well as on consulting in the field of building physics.
 

Wirtschaftsbetriebe Duisburg is a municipal employer and a modern business enterprise. 
Its range of responsibilities extends from bridge and canal construction to real estate management, waste disposal, and the maintenance of green spaces.

More than 2,100 employees of Wirtschaftsbetriebe Duisburg - AöR work for Duisburg every day.

Die Wohnstätte Krefeld Wohnungs-AG (WKR) ist das größte Krefelder Wohnungsunternehmen mit einer über 125-jährigen Unternehmenshistorie. Ihre etwa 9.000 Wohneinheiten bewirtschaften sie mit rund 95 Mitarbeitenden aus dem Herzen der Stadt.

Als kommunales Wohnungsunternehmen schaffen sie Wohn- sowie Lebensqualität für die Menschen in ihrer Stadt. Sie bauen, sanieren, modernisieren und bewirtschaften lebenswerten und bezahlbaren Wohnraum. Ihr Anspruch dabei ist, mit attraktiven Quartieren einen positiven Beitrag zur Stadtentwicklung zu leisten. Bei ihrer täglichen Arbeit verbinden sie soziales Handeln mit solider Wirtschaftlichkeit und verstehen sich als nachhaltiges Unternehmen.