Category: Urban heritage

AI-based Visualisation for Sustainable & Affordable Housing

Posted on by burkhard

Cities worldwide face growing challenges in delivering affordable housing, upgrading informal settlements and creating inclusive public and social spaces. Addressing these challenges requires participatory planning, clear communication and tools that make spatial options tangible for citizens and decision-makers.

The Connective Cities Sustainable & Affordable Housing Working Group provides a global peer-to-peer learning platform supporting municipal innovation through the exchange of project ideas, planning approaches and practical solutions. Building on earlier exchanges (2024–2025), the working group has entered a new phase (2026–2028) focusing on visualisation methods to support reverse planning and implementation-oriented project preparation.

Affordable housing in a traffic-calmed neighbourhood | Photo: Connective Cities

On 22 January 2026, Connective Cities convened an online peer-learning workshop on AI-based visualisation for sustainable and affordable housing. Cities from Sub-Saharan Africa. Europe and the MENA-region worked hands-on with the AI-based visualisation platform CoPlan AI, jointly generating and refining visual concepts while explaining their local planning contexts, constraints and priorities. The session followed a peer-learning format and focused on learning and exchange, not on final design solutions.

Participating Cities

Participating cities included Kisumu, Nairobi, Turkana County, Kitengela Municipality, Windhoek, Mariental, Huye, Rwamagana, Lusaka, Mazabuka, Mangaung (Bloemfontein), Mwanza, Hebron and Berlin.
________________________________________

Selected City Examples

Huye (Ruanda)

Model for Huye | Photo: Connective Cities

Huye explored the upgrading of a dense informal settlement along a main street. Visualisations focused on combining higher density with neighbourhood-scale principles, introducing a central public plaza, integrating solar rooftops and green façades, and creating small-scale social infrastructure such as playgrounds, community spaces and local shops.

Another model for Huye | Photo: Connective Cities

Berlin (Germany)

Berlin tested a timber-based affordable housing complex in a new development area with tram access. The concept included multi-layered block perimeter development, commercial uses on the ground floor, affordable housing for approximately 1,000 residents in upper floors, and integration of cycling infrastructure, green façades and solar lighting. The city input was jointly contributed by Lars Löbner and Larissa Häeschel from the Berlin Senate Department for Urban Development, Building and Housing.

Model for Berlin | Photo: Connective Cities

Nairobi (Kenya)

Visions for Nairobi

Nairobi focused on low-rise housing along a busy urban street. The scenario combined affordable brick housing with space for local public and semi-public transport, including boda boda stations. Rear-staggered buildings, active ground floors, shops and green façades were used to improve public space quality and local accessibility.

Photos: Conective Cities

Hebron (Palästina)

Hebron explored a park-centred development at the urban fringe, combined with affordable housing. The park served as the main structuring element, complemented by housing forms derived from traditional models, shaded seating areas, climate-adapted vegetation and pathways following the natural terrain.

Model for the park on the outskirts of the city | Photo: Connective Cities

Methodological Example: Santa Cruz de la Sierra (Bolivia)

Santa Cruz de la Sierra was presented as a methodological example by Ruvi Suárez (GIZ Bolivia). Based on her work with a student group, she introduced backcasting approaches and a model for assessing the impacts of different urban development scenarios. The example illustrated how AI-supported visualisation can be combined with impact-oriented planning to support the transition from vision to implementation, particularly in the context of affordable housing and public and social spaces
________________________________________

Recording of the online peer learning workshop on the Connective Cities platform:

From Vision to Reality: Introducing Visualisation Methods for Affordable & Sustainable Housing

________________________________________

Next Steps

The workshop marked the start of an intensified collaboration phase within the Sustainable & Affordable Housing Working Group. Building on this experience, Connective Cities will further strengthen peer consultation formats and link visualisation methods more closely to reverse planning and implementation-oriented processes.

Concept and facilitation: Jelena Karamatijević, GIZ – Connective Cities (Bonn)
Regional coordination (SSA): Moses Munuve, GIZ – Connective Cities (Nairobi)

Model for a shaded market | Photo: Connective Cities

Reuse Instead of Demolition: 2nd Hands on Public Buildings

Posted on by burkhard

Author: Dr. Susanne Reiff

Publisher: Connective Cities

For over a year, more than 30 experts from six countries worked as part of Connective Cities‘ learning process ‘2nd Hands on Public Buildings. Repurposing Modernist Public Buildings from the 1960s and 1970s ’ on solutions for aging public buildings from the 1960s and 1970s. How can they be sustainably reused or repurposed instead of being demolished? At four events and two working meetings between September 2024 and September 2025, they learned about current trends in this area, deepened their knowledge, heard details about possible solutions from external experts, and inspired each other with their respective experiences, approaches, and ideas.

But the participants didn‘t just exchange ideas, they also took action. They further developed the project ideas they presented at the dialogue event in Berlin in September 2024 or, in some cases, implemented them directly, taking up suggestions from the other participants. The innovative and very diverse projects impressively demonstrate the potential of the paradigm shift away from rapid demolition toward well-thought-out reuse and conversion.

The documentation provides insights into the key findings.

7 pages

Year of publishing: 2025

Connective Cities Summary & Outlook Event “2nd Hands on Public Buildings. Reuse of modernist buildings”

Posted on by francesco

Building and demolition account for about 60% of carbon emissions and for more than 30% of waste generation. The reuse of buildings is an essential strategy towards a more sustainable building sector. Plus, the decision to reuse an existing building can save municipalities up to 15% of construction and demolition costs. We would therefore like to invite you to join our 2,5h online-event in September and learn more about the successful reuse of public buildings – maybe this insights will come in handy in your work environment?

Please register here and confirm. You will receive the meeting link via email.

Last September, a Connective Cities dialog event in cooperation with the Berlin Senate Department for Urban Development, Building and Housing was dedicated to this paradigm shift. Around 30 municipal experts from Germany, Kenya, Montenegro, the Palestinian Territories, Zambia and Ukraine exchanged ideas on solutions and challenges for the sustainable reuse of modernist buildings and worked together on individual project ideas.

On September 22, 2025, the Connectve Cities Summary and Outlook Event will allow participants and further municipal experts from Germany and worldwide to:

  • Look back on the one year long learning process and the projects’ advances
  • See examples for the revitalization of public buildings from a donors’ perspective
  • Get input on the importance of reuse projects for the global SDGs
  • Get input on the reuse of building parts by practitioners
  • Learn about your opportunities to engage in German development cooperation

 

The working language of the event is English. Please find the agenda attached. Contact us regarding any questions you might have: connective-cities@engagement-global.de.

 

The Haus der Statistik

Posted on by erik

Author: Dr. Susanne Reiff

Publisher: Connective Cities

A new district for administration, housing, social affairs and culture is being built on the large site of the former administrative building for the Federal Statistical Office – Haus der Statistik – in the center of Berlin. A civil society initiative had prevented the demolition of the existing building from the 1960s and, together with the administration and other stakeholders, developed the concept for the conversion – a beacon for alternative approaches to urban development.

4 pages

Year of publishing: 2025

Expert exchange on the interim use of public buildings

Posted on by erik

Are you an expert in the interim use of buildings? If so, we would be delighted to welcome you to a Connective Cities expert meeting, where participants in the Connective Cities learning process ‘2nd Hands on Public Buildings’ will learn about the work of ZwischenZeitZentrale Bremen and Transiträume Berlin e.V. and discuss examples of their projects with experts in this field. The exchange of expertise will take place online on March 12, 2025, from 9:00 a.m. to 10:30 a.m. via WebEx (alternative date as the meeting in February was cancelled).

For ecological and, increasingly, economic reasons, the reuse or conversion of buildings from the 1960s and 1970s is of interest to municipalities and their building stock. The Connective Cities dialogue event in cooperation with the Berlin Senate Department for Urban Development, Building and Housing from 24 to 27 September 2024 was dedicated to this paradigm shift. Around 30 municipal experts from Germany, Kenya, Montenegro, the Palestinian Territories, Zambia and Ukraine exchanged views on solutions and challenges for the sustainable reuse of public buildings and jointly developed project ideas. The ongoing one-year learning process of Connective Cities on the reuse and repurposing of modernist buildings offers further insights into the topics discussed in Berlin and the opportunity to develop concrete solutions through exchange and study tours. On March 12, 2025, we will focus on the topic of ‘interim use’, which arose during the event, particularly for participants from Nairobi. All objects and project examples provided by the participants can be found in this publication.

Please feel free to contact me if you are interested: marcella.sobisch@engagement-global.de.

2nd Hands on Public Buildings

Posted on by erik

Author: Dr. Susanne Reiff

Publisher: Connective Cities

Documentation of the Connective Cities dialogue event from 24 to 26 September 2024 in Berlin.

Public buildings from the 1960s and 70s are a common feature of many cityscapes around the world. Today, they rarely meet the 21st century’s technical, energy and aesthetic requirements, and are frequently demolished and replaced with new buildings. However, they have great potential for reducing emissions in the construction sector, thereby contributing to climate change mitigation.

At the dialogue event, almost 25 municipal experts from Germany, Kenya, Montenegro, the Palestinian territories, Zambia and Ukraine exchanged views on solutions and challenges for the sustainable reuse of public buildings from the 1960s and 1970s and worked together to develop project ideas. New concepts often include multifunctional use for residential, social, educational, cultural, retail and office space.

Short summary and a photo gallery on our microsite ‘More sustainable than demolition‘

9 pages

Year of publishing: 2024

Hebron City Hall – reinvented time and again

Posted on by erik

Built in 1965, the current City Hall of Hebron in the Palestinian Territories has been remodelled and repurposed time and again to meet the increasing demands of a growing city and its administration. The focus was on resource efficiency, technical modernisation and the requirements of work organisation.

Experiences with the restoration of buildings and the construction of new buildings by reusing existing materials

Posted on by erik

As part of the learning process “Towards a Climate Positive Built Environment Using Bio-based and Re-used Materials”, experts from the City of Munich, the Technical University of Munich and the City of Heidelberg travelled to Nepal in October 2024 to learn about Nepal’s long-standing practices in the field of sustainable construction and the reuse of building materials during a week-long delegation trip.

The German delegation met the R.P. Foundation and the international organisation ICIMOD in addition to Banepa’s municipal stakeholders and learned about the architectural landscape and circular building techniques in Nepal. The aim of the German delegation was to explore possibilities for applying such Nepalese approaches in Munich and Heidelberg. The delegation was also interested in discussing building in mountainous regions and resilient construction with regard to increasing extreme weather events.

Transforming primary school “Lovćenski Partizanski Odred”

Posted on by erik

Revitalizing an essential community hub

The Primary School “Lovćenski Partizanski Odred” in Cetinje, Montenegro, has been a cornerstone of education in the community since 2004. Serving 600 students, the school building was constructed as part of a larger plan, which, due to budget limitations, was only partially completed. While the main building was in use, the absence of a sports hall and outdoor facilities, combined with outdated infrastructure, hindered the learning experience.

In 2018, a collaborative effort between the Ministry of Education, Science, and Innovation and the Old Royal Capital Cetinje set out to change this. The joint venture aimed to upgrade the school with a new sports hall, enhanced outdoor spaces, and significant energy efficiency improvements, ensuring a safer, more sustainable environment. This transformation, strengthened by Connective Cities’ knowledge-sharing platform, showcases the power of international collaboration in advancing sustainable urban development.

Connective Cities learning process and knowledge exchange

The Connective Cities network, which fosters sustainable urban practices through peer learning and collaboration, has been an invaluable resource in the transformation of Cetinje’s schools. In October 2023, representatives from Cetinje—Marija Mrvaljević, the City Chief Architect, and Marija Proročić, Secretary for Spatial Planning and Environmental Protection—participated in the Connective Cities Learning Process on Renewable Energy Options at the Municipal Level, in Tbilisi, Georgia. During this event, they presented the school renovation project, gaining valuable insights and technical expertise from other European and German cities facing similar urban challenges. This exchange has been essential in adapting the project to international standards of energy efficiency and sustainable design.

Through the Connective Cities platform, Cetinje has successfully integrated key renewable energy solutions into the renovation of local schools. The municipality installed solar energy systems on school buildings, significantly improving energy efficiency and reducing electricity costs. Additionally, energy-efficient lighting and enhanced insulation were implemented to further decrease energy consumption. These initiatives not only advance Cetinje’s sustainability objectives but also serve as a model for other municipalities seeking to implement similar solutions.