Case Study: nZEC - New construction of 101 dwellings in Attemsgasse, Vienna, Austria (UNDER MONITORING)
Name of organisation: ÖSW - Österreichisches Siedlungswerk Gemeinnützige Wohnungsaktiengesellschaft-AG
Stage of development: completed
Year of finalization: 2008
Type of project: construction
Area: urban
Scale: individual buildings
Type of building: Apartment in a block of six to ten stories
Number of units/dwellings: 101
Tenure: social rental
Street: Attemsgasse, 5
Postcode: 1220
City: Wien
Region/ County: Wien
Country: Austria
Last Update: 15.04.2015
Short Description
The project is a low energy building, built on a standard required by the housing promotion scheme (above the standard of the general building code). T
his standard has been raised in the meantime. Nevertheless the building represents a generation of very low energy standard compared to the standards of former generations. This building has a special light-weight construction façade.
The building is constructed barrier-free, dwellings can be adapted barrier-free if required.
All dwellings are equipped with balconies and loggias which is not common for housing in Vienna. There is also a common terrace on top of the building as well as a common room.
The size of the dwellings shows a variation between 53 and 124 m2 to fulfil the demands of different household types and persons of different age.
Key Elements
Certification
Calculated demand for space heating: 38,5 kWH/m2(gross).
Funding
Mix of own funds, bank loan and public soft loans.
Costs | ||
Total | Per m2 | |
Construction overall | € 11.565.210 | € 1.500 |
VAT | Not included since VAT of construction costs is deductible according to Austrian VAT regime (Vat charged on rents) | |
Space heating + hot water | € 44.000 | |
Operation, inspection and service | € 8.500 | |
Maintenance – repairs and replacement | € 21.000 | |
Thermal Insulation
Special façade: lightweight-construction; sandwich system with integrated thermal insulation (12,5 cm). The construction not only provides efficient insulation but also saving of space.
Ventilation
Central automatic system.
Heating and Hot Water
District heating.
Monitoring
Click here to access the monitoring data on the HIVE Database!
Main Results
When comparing the calculated heating demand to actual consumption it turns out that both levels are in accordance.
Lessons learned
The building proves that with a comparatively low level of costs of construction an efficient level of energy consumption can be obtained.
Additional Information
Ms Eva Bauer
Gbv - The Austrian Federation of Limited Profit Housing Associations
E-mail: ebauer@gbv.at
Web: www.gbv.at
