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

Funding Certification Monitoring Thermal Insulation Heating and Hot Water Ventilation

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


Source: http://www.powerhouseeurope.eu/nc/cases_resources/case_studies/single_view/?tx_phecasestudies_pi3%5Bid%5D=181&cHash=