MGG22 is an innovative housing development located in Vienna’s 22nd district, comprising 160 residential units across three parcels. The project is distinguished by its commitment to sustainability and social inclusion, having pioneered the use of thermal component activation (TCA) in social housing. This system integrates wind energy, brine-to-water heat pumps, and deep probes for low-impact heating and cooling, utilizing the building’s concrete ceilings not only for temperature control but as an energy storage solution. This approach results in reduced operating costs and aligns with ambitious ecological goals.
The architectural design emphasizes community and livability. Seven moderately tall apartment buildings reconnect previously fragmented spaces, creating a network of courtyards, passageways, and communal facilities such as libraries. Each residence features terraces, balconies, or loggias, offering access to sunlight, air, and green views. The project champions the “edible city” strategy, planting fruit trees, herbs, and berries throughout its open spaces. Residents benefit from a 2,500 m² community garden maintained by the local association Stadtgemüse²², which serves as a social and horticultural meeting place.
MGG22 sets a precedent for affordable, high-quality, and resilient housing that adapts to climate challenges. Its successful integration of innovative energy management with accessible urban green spaces reflects Vienna’s broader social housing model—prioritizing mixed-income communities, design excellence, and comprehensive planning. The project continues to inspire replication and further advancement in ecological urban living.