• Recyclinghaus

    The recyclinghouse is an experimental residential building in the Hanover district of Kronsberg. It is a prototype that tests the possibilities and potentials of various types of recycling in the real laboratory and shows a cycle-oriented and resource-saving planning approach.

    On the one hand, the recycling center relies on recyclable building products, such as the raw construction made of glue-free solid wood elements. On the other hand, recycled materials such as the foundation made of recycled concrete or wall insulations made from old jute bags are used. There are also large quantities of used components being used which, if possible, originate from the building stock of the client GUNDLACH or have been obtained locally. Particularly important is a recycling-fair design that allows the use and disassembly of the components without loss of quality or a sorted separation of the materials after the end of life.

    The construction industry is one of the largest waste producers and consumers of resources and a significant contributor to global CO2 emissions. When planning buildings, today it is mainly the energy consumption in the operation of a building that is considered. The considerable amounts of "gray energy" involved in the production of buildings remain largely unconsidered. Here, the existing building stock can also be understood as huge raw material storage. The recycling of building materials and materials as well as recycling-friendly construction methods will play an increasingly important role in the future.

  • ecovillage - Tiny Living

    Sufficiency means shared luxury.

    The "Tiny Living" building is part of our project ecovillage in Hanover. It is located at the transition between the centre and the Green Ring and forms the interface between the intimate neighbourhood and communal space with a high degree of publicity.

    The L-shaped building consists of two stepped structures, which are accessed and connected via a generously usable arcade. On the one hand, the arcade enables a diverse exchange between the residents and, on the other hand, a very high degree of flexibility in the use of the building. Based on a grid, a wide variety of apartment sizes and forms of living can be offered and the living space can be adapted to future changing needs.

    The main focus in the development of "Tiny Living" is residential use. This is supplemented by a shared bicycle and storage room, two laundry rooms, a common room and an experiment room for water use and food cultivation operated by the entire ecovillage with access to the adjacent aquaponics greenhouse.

    Responsible use of building materials makes a significant contribution to the sustainability of the property. As early as the construction of the building, the conservation of natural resources is included through a design that is suitable for recycling. Through the targeted choice of materials and the possibility of a clean separation of the elements used, the amount of waste is reduced and the rate of reuse and recyclability increases. The greatest possible use of the renewable building material wood not only minimizes the CO2 emissions during the construction of the building but also serves as important CO2 storage.

    With the development of our ecovillage project in Hanover, there is a great opportunity to make an important contribution to future-oriented urban development with a balanced triad of social, ecological and economic sustainability. Find out more here.

    in progress
  • Schamotte Quarter

    From a factory site to a green living quarter!

    The concept for the area of ​​the former fireclay factory in Bonn-Duisdorf transforms the industrial site into a green neighbourhood with a high quality of living. The urban arrangement of the buildings is derived from the noise impact from the south and the location within a larger city block. A four-storey block building with a stagger along the railway line shields the quarter from the noise. Two polygonal, four-storey solitary buildings in the south form the transition to the more loosely arranged buildings in the area. The structurally identical buildings fit into their surroundings by being twisted against each other and creating diverse and exciting spaces through recesses and bends.

    A neighbourhood square is being created that will serve as an identity-forming address and meeting point. An additional green open space stretches to the east, where the opposite entrances to the buildings are located.

    All adjoining municipal and private plots of land in the east and west can be integrated into the urban picture. The existing building, a shelter for the homeless, can be retained and further developed by adding another story and balconies. The green connection in the middle of the quarter will be extended and merged with a green area with a playground. In the west, a solitary structure can provide a clear edge to the neighbourhood square and minimize the noise impact on the inside of the quarter.

    All new buildings are planned as wood hybrid buildings and can be recycled and later returned to the material cycle thanks to their deconstructability. Noise protection, spatial formation, and the quality of living are not dependent on the development of the neighbouring properties, guaranteeing a functioning and green residential area.

  • Residential Crown Carpark Windmühlenstraße

    The residential crown is a prototype of settlement 2.0. Rooftops of retail and office buildings, as well as parking garages, are activated, attractive locations are opened up, existing infrastructures are used more efficiently and the mixture of programs in the city centre is improved. The existing parking garage is complemented with penthouses as part of the renovation of the façade and entrance area. These residential units distinguish formally from the existing building structure and simultaneously give the building a harmonious completion.

    Entrances and circulation of the building have been reorganized so that independent addresses for the car park and the residential building are clearly recognizable. The residential building is accessed (barrier-free) via a representative lobby on the ground floor with exclusive elevators that lead directly to the central, landscaped residential courtyard. The residential units are accessible from this common space. Each apartment (50 to 120m²) has a spacious, private terrace overlooking the rooftops of the city.

  • Jugendherberge For Future

    As part of the CEWI-cooperation, Cityförster is developing an implementation concept that shows how the sustainable and careful renovation of real estate can be implemented in the DJH Landesverband Baden-Württemberg e.V.

    The mission for DJH Lochen is to be a flagship project for circularity, sustainability and sufficiency. This concept is translated to the offer of the youth hostel, and the architectural design and planning. Following the didactic focus of DJH Baden-Württemberg, the hostel should offer its guests an educational experience for sustainable awareness. This means programs with sustainability themes, active outdoor experiences, and workshops with local resources. These themes are also represented in the architectural concept. The main target groups are school groups, leisure (sports) groups, conference groups, and individual travelers like hikers, cyclists and retreat participants.

    The theme of sufficiency has guided the hostel to rethink its offer of rooms: smaller rooms to emphasize the outdoor experience, and the development of a summer house for the peak season. This summer house provides extra guest rooms in the warmer months, making a low-tech building without heating or cooling possible. The summer house transforms the old garage by extending it with a new floor on top. Upon arrival, the summer house is the eyecatcher of the circularity concept.

    The main goal of the renovation is to restructure the rooms and meet today's requirements. Because the exterior was renovated in 1982, the focus of the renovation is on the space plan and installations. This means a minimal renovation is sufficient. Where possible, building components are harvested on site or in the region, and repurposed in the summer house and the youth hostel. Where larger quantities of materials are needed, materials based on recycled resources and granulated raw materials are applied, for example recycled rubber, concrete and repurposed wood shingles.

    The beautiful location of DJH Lochen next tot the Lochenpass creates an inspiring natural environment in the forest on the hills. The existing outdoor facilities are upgraded, and new functionalities are added to extend the possibilities for outdoor activities. The new multifunctional outdoor spaces contribute to the sustainable outdoor experience of DJH Lochen.

  • New Istropolis

    CITYFÖRSTER and KCAP design a new cultural district for Bratislava, Slovakia. Trnavské mýto will house a state-of-the-art concert and congress venue and the area will be transformed into a modern open neighbourhood including a series of green and public areas.

    Immocap, the owner of Istropolis, has presented its vision of New Istropolis, developed in cooperation with the international architectural studios KCAP and CITYFÖRSTER. The project aims to bring Bratislava a world-class multifunctional cultural and social centre with top-level architecture, creating a long deserved cultural landmark for the Slovakian capital.

    The new multifunctional hall enables Istropolis to meet Bratislava's real needs and leverage the potential of Trnavské mýto, and will foster cultural and congress tourism. New Istropolis offers the capacity to host various events simultaneously, such as acoustic, rock, jazz, pop concerts, numerous events and cultural events, and conferences and congresses of all sizes. The hall will be able to hold three different events simultaneously and have a maximum capacity of 3000 seats and 5000 combined seats for sitting and standing. The unique in-the-round seating configuration brings the audience close to the stage, creating a sense of intimacy and connection with the performers.

    Trnavské mýto is a key location in Bratislava in terms of pedestrian movement, traffic, and potential contribution to urban development. The project aims to bring new life to this important part of the city that has been neglected too long. Besides the world-class cultural venue, there will be a park with promenade, fountains, and cycle paths. Public areas will be accessible to visitors throughout the day, while the square will support and develop community activities such as seasonal markets.

    in progress
  • Buchholzer Green

    The development of Buchholzer Grün creates a residential area in an attractive location. The five-storey and the four-storey apartment buildings in combination with ten three-storey townhouses form the northern opening of the new quatier. The three new buildings develop a powerful, own identity, which incorporate the urban connection to the surrounding city districts and the neighbouring Podbielskistraße. The rhythmization in the height development as well as the verticality through the overlapping windows and balconies in the clinker facade are central design principles. The change of material makes the entrance areas clearly recognizable and at the same time they fit into the overall structure of the facades. The result is a robust, unpretentious and solid figure. The multi-storey housing units impress with an exciting mix of tenements and condominiums in different sizes, while the townhouses offer a small type of building as well as a large one and enable parking inside the house.


  • Pelikan Mix⁴

    The project PELIKAN MIX4 is characterized by a variety of dwelling types according to urban lifestyles. Within an urban master plan four distinctive characteristics are developed:
    A landscape tableau is the connecting element, forming an entrée for the private, semi-public and public spaces. Generous lobbies in each house compose a discrete identity and a space of encounters. A great flexibility in the floor plans allows a variety of different apartments in size and type. According to society demands, the types "wellness", "sustainable", "extravagant" and "comfortable" are developed. They differ in constellation of rooms, material, building equipment and the offer of outdoor spaces. So called "Glorietten" crown the buildings and optimize light, spatial peculiarity and views.

  • Düsseldorf VIERZIG549

    The colourful life!

    In the middle of the Vierzig549 quarter, the "heart" of the entire area is being created, a lively meeting place with a high quality of stay and programmatic diversity; the pacesetter for "The colourful life". The different building types „high-rise" (wooden hybrid), „courtyard house", and point house are designed as a coherent ensemble. The mix of commercial and residential uses promotes the urban character of the area. In particular, the programming of the ground floors, which ranges from commercial to Live+Work to mezzanine living, contributes to this. However, with the exception of the ground floors, the buildings are used for either residential or commercial purposes to allow clear and easy circulation.

    The green "urban grove" with park character and the multifunctional "square" complete the building structure. With their different atmospheres, they create a spatial and qualitative diversity in the quarter. Rainwater management is based on natural circulatory systems. Intensive green roofs (and extensive under the PV systems) delay runoff and encourage evaporation. An improvement in the local microclimate is expected through the systematic use and infiltration of rainwater in the open space. The inner area is car-free.

    The design of the building is guided by the image of urban architecture with echoes of the history of the area. The façade grid is robust and reminiscent of industrial building types. It is used as a base layer for all buildings and thus combines the different types of high-rise building, courtyard building, and point building as an ensemble. At the same time, the grid allows flexible filling depending on use and orientation as well as individualization for recognition value. The structural concept consistently relies on recyclable building materials and sustainable construction with wood.

    in progress
  • High Q

    Urban integration creates a neighborhood
    In its immediate surroundings, HIGH Q picks up on the typological and urban development characteristics of its neighborhood. The existing principles of block structures, incisions and polygonal high points are transferred to HIGH Q in order to create a harmonious overall urban image.
    On the west side of the construction site, a neighborhood square with outdoor gastronomy will be created at the interface between the office and the hotel, creating a lively meeting place for everyone. This square also serves as an entrance to the hotel lobby.

    Striking appearance creates identity
    Whether viewed from a passing train, as a pedestrian or from a bicycle, the HIGH Q always looks different and yet is unmistakable. The special façade design with 6 partial façades makes the high-rise appear slender and without a rear side, creating ever new impressions.

    Recognition value and an identity-creating design are an important requirement for this building in this exposed location. On the one hand, the façade and the striking shape create a variety of impressions depending on the viewing angle, while on the other hand the building also offers diverse and special situations in its immediate context. The undercut to Celler Strasse with its forecourt forms a clear address, the neighborhood square offers a common center for the neighborhood and the differently designed facades improve orientation and create different places.

  • Karstadt Recycling

    How can we transform vacant department stores in Germany and bring them to a new stage of life with new uses?

    Hundreds of department stores stand empty in German city centers. At Hermannplatz in Berlin, an old Karstadt building could be redesigned. A new façade creates a strong face in the urban context and an invitation to a differentiated courtyard sequence, which was redesigned as a playful open space experience. Instead of shopping, living, working and community-oriented offerings now meet the needs of the growing urban society in the 21st century.

    The existing Karstadt building provides valuable building materials that are deconstructed, recycled and reused. According to the layer principle, load-bearing and non-load-bearing components are structurally independent of each other. Thus, they can be used independently in their various life cycles.
    A durable, urban façade forms the new face to the city and creates a gateway to the interior.

    A varied sequence of courtyards accompanies the crossing and becomes an urban experience: the Werkhof with its lively hustle and bustle, the Green Heart as a central interface and at the same time as a place of retreat, and the city playground, which promotes interaction and participation. Flora and fauna form the connecting element of the spatial sequence within the courtyard structure up to the roof terraces.

  • Köstra Reuse

    The proposal for the revitalization of Königstrasse 1ab is based on the following 5 guiding design themes:

    Development of a building structure that completes the ensemble of the hotel and Königsstraße 1c, which incorporates heights and gradations, creates addresses and forms the prelude to Königstraße through its orientation towards the train station.

    Creation of lively, green passages with small-scale retail, gastronomy and areas for culture and events in the interior of the ensemble and a generous setback on Königstraße to provide more space for planting and passers-by.

    Enabling maximum exchange between inside and outside through diverse and generous entrances and transparent façades.

    Creating modern retail, office and restaurant layouts that can react flexibly to changing future requirements.

    Reuse of the existing load-bearing structure and individual components to minimize energy consumption and thus reduce CO2 emissions.

  • The Rubber House

    The Rubber House as a price winning project in the Eenvoud/ Simplicity competition was selected to be built in Almere, Netherlands, as one of 12 experimental housing projects. In volume and style inspired by the simple and archetypal Dutch barn architecture the Rubberhouse forms a simple asymmetric double pitched roof inhabiting 2 storeys, in combination with a single pitch roof with one storey. The resource saving construction consists of massive wood panels from cross-laminated timber. The outer walls and the roof surface are clad with black EPDM foil. In contrast to that the atmosphere of the inside is characterized by the natural warm surface of the massive wooden walls. The utilization concept proposes small private rooms in favour of a generous open plan living area. Clear lines of sight through the entire building support the robust, open space sequence and allow visual connections into the adjacent forest. The living room can be expanded via the large sliding glass doors onto the terrace. The high degree of prefabrication allowed for a building period of only three months.

  • Max and Moritz

    The primary focus of our project entails the resilient and environmentally conscious transformation of two Plattenbau buildings situated on the outskirts of Erfurt, with the objective of establishing a model that can be universally applied throughout the entire neighborhood. The volumes of the two buildings are enveloped by a prefabricated modular grid system, thereby creating an aesthetically refined and low-maintenance design. This approach facilitates not only the seamless integration of novel features, such as entrances on the north side and more expansive balconies on the south side, but also fosters the customization of living spaces and engenders a vibrant sense of community. Additionally, a continuous base serves to integrate the building into the surrounding street context, thereby reinstating a harmonious relationship with the adjacent neighborhood.

    Our material choices prioritize economic and sustainable utilization. Easily replaceable wood is employed for planter cladding and facade, complemented by natural fiber insulation and plant charcoal to offset the CO2 emissions associated with the concrete structure. Concurrently, the primary load-bearing structure is composed of concrete, ensuring both fire safety and minimal maintenance costs. A pivotal aspect of our climate-resilient transformation involves the incorporation of greenery on the facades to positively influence the microclimate in the vicinity of the building. This is coupled with a comprehensive rainwater management system, incorporating storage for utilization and retention during intense rainfall events. As a contribution to biodiversity, an assortment of plant species is judiciously combined to provide a year-round supply of flowers and sustenance for insects and birds.

  • Build Simply

    How to build using simple means in construction, building services, fire protection, floor plan design and open space and still react to the ongoing questions of climate adjustment and resiliency?

    "Build Simply" shows answers to these questions in a 5-step strategy which we developed together with our cooperation partners on levels of structural engineering, building technology and landscape design:

    1. Simple volumes connected to an active arcade
    2. Intelligent fire protection
    3. Reduction of technology through clever construction
    4. Use of local energy resources
    5. Cradle-to-cradle/Build sorted

    On an architectural level, these principles are implemented by public and semi-public spaces aligned to the common yard, the lowest building class possible, continous floor plans for a better ventilation within each apartment and a structure allowing an effective planning with wood. Nevertheless, the main focus of the design relies on the needs of people to promote a
    communal and sustainable togetherness