The Frankfurt Prototype: Modular Timber Housing

In a courtyard between historic buildings in Frankfurt, a temporary structure rises on steel columns. The Frankfurt Prototype, developed with Barkow Leibinger and built by students from the Stadelschule and Frankfurt University of Applied Sciences, is a two-storey modular building that combines a ground floor market hall with upper level student housing. It is a prototype: a working test of how modular timber construction, recycled steel, and biodiversity-integrated design can produce urban buildings that are temporary, reusable, and alive.

The project is part research, part architecture, part exhibition. The ground floor is an open market hall for events and cultural exchange. The upper floor holds prefabricated residential modules for students. A vertical tower of stacked timber frames holds plants, screens, and a biodiversity programme developed with the Senckenberg Society. A transparent geodesic dome sits on the roof. Nothing about this building is conventional, and that is the point.

The Structure: Steel, Timber, and Modules

The ground floor is a steel frame raised on columns, creating an open market hall that can be configured for events, exhibitions, and gatherings. The upper floor sits on this frame: prefabricated timber-clad residential modules and an open terrace with a red steel balustrade. The structure is deliberately legible. You can see the steel columns, the timber modules, the connections, and the services. This is a building that shows how it was made because showing how it was made is part of its purpose.

Night: The Prototype as Event

The best photographs are taken at night. The market hall glows with pendant lights. People gather at tables below. The residential modules are lit from within, showing the timber interiors. The tower element is the most theatrical: four levels of open timber frames with plants, decorative screens, and warm light. At night, the Frankfurt Prototype stops being a building and becomes an event. The crowd, the lights, the plants, and the timber create an atmosphere that no finished building could match.

The Tower: Plants and Biodiversity

The vertical tower is an open timber frame stacked four levels high. Each level holds a different programme: plants, screens, a small enclosed room, and an open platform. The tower is the biodiversity element, developed with the Senckenberg Society. Plants grow at every level. The timber frames provide habitat. A transparent geodesic dome sits on the roof of the adjacent residential module, creating a greenhouse effect. The tower is not structure. It is landscape, stacked vertically.

Interior: Plywood Gallery

Inside one of the modules, the walls and ceiling are lined in plywood. A textile artwork hangs on one wall. Photographs are pinned along the corridor. A plywood stool sits in the corner. The space is small, warm, and finished entirely in timber. This is the quality of the residential modules: compact, prefabricated, and lined in natural material. The narrow window frames a view back to the courtyard. The module could be a student room, a gallery, or a workshop. That flexibility is the point of a prototype.

The Residential Modules

The axonometric drawings show the individual residential modules: timber-clad boxes with windows, balconies, and integrated planting. The section shows the relationship between the ground floor market hall and the upper floor residential unit: figures sit at tables below, a bedroom occupies the module above, and a stair connects the two. The modules are designed to be prefabricated, transported, and reassembled. When the prototype is disassembled, the modules can be reused on another site.

Drawings and Concept

The exploded axonometric shows how the project is assembled: steel columns support the ground floor platform, residential modules and the terrace sit above, and the tower rises alongside. The rendered views show the full vision: a lush, inhabited structure with plants growing from every surface, people at every level, and colourful accents (pink benches, yellow windows) that signal the building's temporary, playful character. The concept diagrams in teal and pink map the programme distribution and show the project as a social diagram, not just a building.

Why This Project Matters

The Frankfurt Prototype is not a finished building. It is a test. It tests whether modular timber construction can produce housing quickly. It tests whether recycled steel can support a multi-storey structure. It tests whether biodiversity can be integrated into a building's structure rather than applied to its surface. It tests whether a temporary building can host a market, a gallery, student housing, and a garden at the same time. The answer to all of these is yes.

If you are working on modular housing, temporary architecture, student-built projects, or any building that needs to prove a concept before it scales, the Frankfurt Prototype is worth studying for how research, construction, and exhibition can happen in the same structure.

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Project credits: The Frankfurt Prototype, developed with Barkow Leibinger. Frankfurt, Germany. Photographs: Wolfgang Stahr.