Luchswiese Affordable Housing
Client: City of Zurich
Place: Zurich, Switzerland
Date: 2022 Competition
Area: 5557 m2
Budget: CHF 42.7 million
Alejandro Zaera-Polo, Maider Llaguno-Munitxa, Ivaylo Nachev, Miguel Bello, Eleonora D’Agostino
Daniel Jauslin, Niccolo Centrone
Our overall massing strategy has been to concentrate the residential units in two compact volumes, orient-ed towards East and West to ensure adequate solar exposure.
We are maximizing the heights within the 7 + 1 level regulations for residential, to minimize the building footprint, to preserve the natural ground as much as possible and reduce foundation costs.
Along the South edge of the site, we propose to have a water-retention garden which will collect the stormwater in the complex and filter it before returning it to the aquifer. We aim to vegetate as much as possible with groundcovers and a dense tree canopy, to absorb stormwater, evapotranspirate, and contribute to the urban microclimate of the area.
We have avoided using access corridors, which are not only costly, but also lower the quality of the residences by exposing the units to the traffic of neighbours to access the homes.
The building typology has been designed to provide the required variety of typologies in the complex, while using only two vertical circulation cores, where fire escape, lift and air supply and return, and utilities will be located. We have grouped the different residential types in order to give access to at least four units in every floor, so that we can optimize the vertical circulation cores. (1 for every 32 units) We have designed the blocks for maximum compactness, grouping the toilets and the kitchens in the centre of the block, to optimize the use of the façade for the living spaces and the bedrooms. Compactness is our first argument of environmental efficiency: the façade ratios are 0,57-0,59 m2/m2 surface and 0.19 m2/m3 volume.