25_Esch Sintzel | Housing Development Oberzelg

Category
Switzerland

NAME

Project title: Housing Development Neudorfstrasse

Recommending party
The project has been submitted by:

Monique Bosco-von Allmen

LOCATION

Country: Switzerland

City: Winterthur-Sennhof

Address: Oberzelgweg

AUTHOR

Designer or design team architects:
Esch Sintzel GmbH, ETH BSA SIA

D – DETAILS – DATI

Plot area – Superficie lotto: mq 26.700

Gross Area – Superficie lorda totale: mq 28.059

Of which
residential – Di cui Residenziale: % 94

Public/communal areas – Spazi collettivi/comuni: % 4

Facilities for the public – Attrezzature pubbliche: % 1

Business/trade – Commerciale: % 1

Offices – Uffici: %

Number of residential units – Numero di alloggi: 144

Typology of users – Tipologia di utenti: Families – Famiglie
Old-aged people – Anziani
Students – Studenti
Foreigners/immigrants – Stranieri o immigrati
Other – Altro

Total building costs Euros – Costo di costruzione totale in Euro: € 70.000.000

Building Cost = Total Bulding Cost / Gross Area – Costo di costruzione = Costo di costruzione totale /Superficie lorda totale: 2.495 €/m²

Floor area ratio = Gross Area / Plot Area – Densità = Superficie lorda totale /Superficie lotto: 1,05

Work started on date – Data inizio lavori: Friday, 1st July 2011

Work completion date – Data ultimazione lavori: Tuesday, 1st October 2019

E – OWNERSHIP – PROPRIETA’

Heimstätten-Genossenschaft Winterthur

Allotment rule – Regola di assegnazione: Heimstätten-Genossenschaft Winterthur

Reduction cost percentege compared to the market value – Percentuale di riduzione di costo rispetto al valore di mercato

assignement %: 100%

rent %: 80 %

G – CANDIDATURE REPORT – RELAZIONE DI CANDIDATURA
ECONOMIC SUSTAINABILITY | SOSTENIBILITÀ ECONOMICA

Very low construction cost:
Einsteinmauerwerk (monolithic insulated brick), good ratio glazed to opake

Rental/sale cost compared to market price
Costo di affitto/ vendita rispetto al mercato The rent is 20% lower than average market values.

SOCIAL SUSTAINABILITY – SOSTENIBILITÀ SOCIALE
Rules of allocation – Regole di assegnazione: Yes: Reduced rent, assignment for rankings.

Protection of fragile categories
Tutela categorie fragili: Cooperative housing: Targets low- to moderate-income people.

Involvement of inhabitants in the building process – Coinvolgimento degli abitanti nel processo: Yes: Design of common areas and open spaces, especially playgrounds.

Community accompaniment in the life of the building – Accompagnamento della comunità nella vita dell’edificio: 
Yes, the inhabitants can participate in many ways in the communal life of the housing development (see the next two answers): Regular meetings and events.

ENVIRONMENTAL SUSTAINABILITY
SOSTENIBILITÀ AMBIENTALE:
Functional mixitè – Mix funzionale
Community room 400m2 , café and store (cross-subsidized by the cooperative) =240m2, kindergarten and after-school care 240m2, base ‘settlement coach’ and janitor 74m2, ‘idea house’ (youth club, craft rooms, music practice room, yoga room) total =507m2

Common spaces and shared living – Spazi comuni e abitare condiviso:
Community room 400m2 , café and store (cross-subsidized by the cooperative) =240m2, kindergarten and after-school care 240m2, base ‘settlement coach’ and janitor 74m2, ‘idea house’ (youth club, craft rooms, music practice room, yoga room) total =507m2 , playground. The spaces are partly open to the public.

ENVIRONMENTAL SUSTAINABILITY
SOSTENIBILITÀ AMBIENTALE
Techniques and strategies for environmental saving: 
Minergie-P certificate

Description of the project:

Administratively Sennhof belongs to the City of Winterthur, but geographically the suburb is clearly separated from the municipal area and forms a village-like enclave in the Töss Valley. The river not only moulds the topography, it also aligns the elements of the settlement along its course: buildings, streets, railway line, forest boundaries. The same applies to the architectural volumes and the open spaces in the new Oberzelg development, situated constricted between the A-road and the railway line.

For Esch Sintzel the project in Sennhof is amongst the few they have undertaken that do not involve densification, but rather open planning for a green-field site. Instead of accentuating the identity of the locality, the aim here was to develop a new – suburban – status. This is why the project is conceived on the basis of public areas, and this is why these public areas are very explicitly arranged as exterior urban spaces, interacting as a series of squares and alleyways. The squares are framed by airy loggias and raised private gardens, and are ideally suited either to be adopted for individual use or to create a convivial framework for community living.

The reference to traditional settlements extends to the construction, which is executed in single-layer masonry with scraped rendering.