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.

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.

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.

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.

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.

The Nümbrecht School Centre is to be restructured in several construction phases and thus converted from a classical corridor school with internal, anonymous and unused corridors into a new spatial-pedagogical concept, the Cluster School.
The corridors will be activated and transformed into communication zones, supplemented by group / EVA rooms and team stations, as well as niches and self-study areas, and opened to the communication zone.

In order to maintain a clear location of the gymnasium and the secondary school after the merging of the Hauptschule and Realschule to form the secondary school, the former Hauptschule will be demolished and the school centre supplemented by the new building of the secondary school. The planned new building contains 18 classes, 3 team rooms and 12 special learning rooms, which are grouped together in clusters.
The central interface between the existing building and the new one is the "common centre", which ensures the connection of the new building to the existing school centre.

The transformation of Trnavské Mýto into a dynamic cultural and urban hub is entering its next phase. With the building permit secured, Istropolis—designed by CITYFÖRSTER and KCAP in collaboration with Immocap—will break ground in summer 2025.

The project will introduce a state-of-the-art concert and congress hall, modern residences, and high-quality office spaces. The 3,000-person venue will host diverse cultural and business events, featuring in-the-round seating and multi-event flexibility. Offices will include a grand atria and flexible workspaces, while the residences will be nestled within green courtyards and pedestrian-friendly streets.

Istropolis sets new standards in sustainable urban development, integrating passive climate solutions, energy-efficient design, and biodiverse public spaces with 147 trees, 70 local plant species, and dedicated cycling infrastructure. Long overlooked despite its central location, Trnavské Mýto will soon be revitalized with green promenades, fountains, and a lively public square, supporting markets, gatherings, and everyday life.

With construction set to begin, Istropolis moves from vision to reality, shaping the future of Bratislava through architecture, sustainability, and vibrant public life.

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.

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.

The new primary school with 2-court sports hall combines high architectural quality with clear functional structures and a sustainable concept that promotes long-term education and community.

4 buildings - 4 wings:
The school uses are divided into four clearly structured buildings, which are arranged along the common centre. The public areas - sports hall, music school and community library are located in the north and open up towards the town.

Centrality:
The 'Common Centre' forms the heart of the school and combines communal and external
uses into a harmonious overall structure. It links the open spaces and creates a flowing transition between indoor and outdoor spaces.

Connections to all sides:
The central axis links the school in all directions. Side entrances integrate between the buildings on the ground floor and create small, informal passages. At the same time, separate entrances provide access to independent utilisation units.

Sustainable learning houses:
In accordance with the "house within a house" principle, the classes and differentiation rooms in the new self-sufficient learning houses are organised around an educational centre. Concentration,ncommunication and play find the right space here.

As part of the Centrum Bremen 2030+ strategy, the city of Bremen has recognized the potential of rooftops for the transformation of the city centre and has taken initial measures to implement them. The action plan for roofscapes in Centrum Bremen offers new perspectives for the innovative use of roofs. Private and public owners of retail and office properties and parking garages were supported in identifying the potential of their roofs.

The planned conversion of roof areas is intended to create new spaces for people and nature and revitalize the city centre. Possible uses include social meeting places, cultural and gastronomic offerings, urban food production, the promotion of biodiversity, the improvement of the microclimate and energy production. Pilot projects were to be implemented after examining the structural, constructional and legal requirements and supported by funding of the federal ZIZ program.

However, the project revealed that implementation was made considerably more difficult by structural, building law and economic challenges. Although many owners were open-minded and the urban planning conditions were favorable, funding conditions and structural conditions often did not match. Nevertheless, the concept provides important insights into the transformation of the real estate portfolio and shows that realistic, long-term approaches are necessary in order to achieve sustainable and future-oriented development.

The documentation of the concept of action you will find here.
The roof catalogue you will find here.

ONI is located adjacent to Tirana's Pazari i Ri (New Bazaar), in the heart of the old town and close to Kokonozi Mosque and the iconic Skanderberg Square. Pazari i Ri, a historically significant market, recently underwent a significant transformation to include a dynamic center for shopping, dining, and cultural activities. ONI continues that transformation.

Rather than creating a closed and isolated tower, our design's extroverted facades are open to the surrounding streets. This welcoming attitude reflects the nature of the neighborhood, which is characterized by commerce, socializing and enjoyment of urban life. By embracing and responding to this context, the plinth works to foster a sense of community and connection, promoting interaction and engagement among residents and the city.

Above the commercial plinth rises a striking residential tower which ingeniously combines apartments and penthouses. Playful setbacks transform the facade shape, reducing the perception of mass and creating an elegant silhouette which echoes and complements its surroundings. Meanwhile the relationship between the residential spaces and their commercial neighbors adds an exciting dimension, fostering a vibrant community atmosphere and creating opportunities for social interaction and commerce.

This forward-thinking design concept not only enhances the functionality of the building but also contributes to the overall urban fabric and residents' quality of life, enriching the surrounding neighborhood and adding a new hotspot to this lively neighborhood.

The Henschel Quarter opens up hertitage sites to the public and secures them through flexible use. It is integrated into the city and is accessible to everyone. The aim is to preserve the historic industrial culture and make it usable. Listed buildings are carefully restored and remain part of the public space. The industrial past will be preserved through minimally invasive interventions, while new and predominantly commercial uses will revitalize the old halls. The open space will be transformed, historical traces such as tracks and crane runways will be preserved, supplemented by green spaces and playgrounds. In terms of urban planning, small-scale building typologies create the transition to adjacent districts, while high points mark important locations. Connections for pedestrians and cyclists create a continuous and close-knit network in the district. The existing buildings will be supplemented by new buildings whose design is based on the industrial character. Historic parts of the buildings will be retained and partially integrated into the outdoor space. In the center of the quarter, a "hall for all" with restaurants, culture and sports will be created, surrounded by creative and commercial uses.

The Henschel Quarter focuses on sustainability by preserving the existing buildings and reusing gray energy. Demolition materials are recycled on site and new buildings are constructed from sustainable materials. Renewable energies such as solar panels and geothermal energy supply the quarter, while open spaces improve the microclimate, and the combination of history, commercial, cultural and innovative offerings makes the Henschel Quarter a vibrant part of Kassel.

Tirana Crevices—a 160-meter-tall mixed-use tower in the heart of Albania's capital, designed as a civic landmark that integrates culture, housing, work, and leisure. The design features two elegant towers with crevice-like collective spaces, providing shared amenities at intermediate levels that act as public breaks in the vertical city. Designed in partnership with LOLA Landscape Architects, the ground floor is elevated, creating a public landscape of rocks and water that engages the surrounding neighborhood, while the building's façades are clad in locally sourced natural stone, with distinct materials highlighting the communal areas and reinforcing their programmatic significance.

The design introduces a composition of two elegant towers placed on a cityscale four-floor plinth, each structured as stacked blocks with equal proportions.These blocks are subtly shifted creating crevices —communal spaces that offer a civic and social dimension throughout the vertical structure.

To enhance public integration, the building is lifted from the ground, creating a generous landscape beneath it—an open space inspired by rocks and water, developed in collaboration with LOLA Landscape Architects. This gesture grounds the building in its context and invites the public into the site, making the project not only a residential development but also a new urban anchor.

The design of this project was guided by a desire to enhance both the functionality and aesthetic value of the area. The team sought to complete Engel's visionary concept for Victory Square, creating a central space that would serve as a dynamic and vibrant hub within Dejvice. By closing the semicircle around Victory Square, the project reinforces the strength of the square's geometric design and establishes a clear, cohesive axis through the heart of the UCT campus. This newly completed space offers a destination for students, residents, and visitors alike, contributing to the broader vitality of Prague.

A key aspect of the project was the creation of a new urban layout with carefully designed, symmetrical blocks that prioritized high-quality public spaces. These spaces were intended to be interconnected and easily accessible from all directions, enhancing the flow and integration of the area. The two adjacent blocks, while sharing a similar footprint, respond to their different contexts in distinct ways. The western block features a sunken square at the center of Zikova Street, serving as a lively academic and administrative hub. In contrast, the northern block offered a residential setting with a semi-enclosed courtyard, providing a peaceful retreat for its residents and visitors.

The architecture of the development took its cues from the surrounding Dejvice area, blending modern functionality with a clear sense of place. Each building's facade is designed to reflect its unique function, context, and orientation. The apartment buildings offer flexible layouts, accommodating a range of residential needs, while the office and institutional structures feature large, open atriums that activate the ground floor. These spaces remain inviting and lively year-round, even during the winter months. Additionally, the project prioritized sustainability, with an emphasis on energy-efficient buildings and infrastructure made from durable materials. The surrounding public spaces were designed to promote sustainable transportation options, contributing to a greener, more resilient urban environment.