Hannover:
Renovation of Multi-storey Flats, Rehbockstraße

EA.UE

,

Country: a) Western Europeb) Germany
Language:
Type: Project, 2
Area: District/Quarter, 100,000 - 1 mill.
Actors: Local government, Economic sector
Funding: Local government, Regional government, National government, Economic Sector
Topics: Architecture and construction
Building materials
Housing (and new settlements)
Urban renewal / Urban rehabilitation
Water
Objectives: Improve living conditions
Increase cogeneration
Increase district heating
Increase use of ecological building materials
Reduce energy consumption
Reduce water consumption
Waste recycling
Instruments: Demonstration and pilot project

Abstract:

The renovation and urban renewal project comprises 4 buildings with multi- occupancy and is located in a densely inhabited, late 19th century district of Hanover. It included a number of ecological measures which had not yet been tested in public housing projects.

Initial situation and aims of the project

The project comprises 4 buildings with multi-occupancy and is located in a densely inhabited, late 19th century district of Hanover which was scheduled as an urban renewal area in 1985. This procedure meant that urban planning subsidies were available to improve low standards of urban design and buildings.

The project designers were commissioned by the city authorities to draw up a plan for three empty and completely dilapidated buildings, with a number of ecological measures which had not yet been tried out in publicly subsidised housing projects.

Ecological aspects

urban design: retention and improvement of inner city building structures
healthy building: as far as possible use of existing building materials for renovation and use of non-toxic building materials
energy/heating increased insulation, controlled ventilation, use of local gas fired CHP stations to produce electricity and heat for heating apartments and hot water
water: water saving tap units, rainwater use for flushing toilets
waste disposal: separation according to type and recycling
traffic: no parking spaces provided in the courtyard, proximity to public transport
social concept: publicly subsidised housing, mix of apartment size from 1 - 6-person flats, at least 5 different nationalities
open spaces: differentiated open areas private for apartment dwellers; semi-public for building occupants and public play areas, vegetation areas
floor plans: some communal living rooms within apartment buildings, addition of glassed-in balconies
design: retention of characteristic features of 19th century facades, use of building materials common to the district

Results

An evaluation of the use of energy and water by the Institute for Urban Ecology showed that the project planners' estimates of potential average savings were largely correct. Evaluating individual consumption in these areas nevertheless showed tremendous variation in consumption, which proves that consumer behaviour has the greatest influence on savings.

One essential outcome of the Rehbockstraße project was the persuasive effect it had on housing associations and the city council in initiating further ecological projects and measures. For example, discussion over the advantage of local CHP plants, even for smaller numbers of customers, led to more of these plants being subsequently installed in various locations in Hanover. Many interested groups from the city, from Germany and neighbouring countries came to visit this project.

Statistical Information

162

49 public-subsidised apartments, 2 shops

preliminary discussions between architect consortium and the City Planning Department held in 1986, construction work began 1988/89, completion 1991

Architects: Angelika Blencke, Architekturbüro pk Nord Andreas Mauerer, Büro Mosaik Gerd Nord, Lindener Baukontor
Developer: Gesellschaft für Bauen und Wohnen Hannover mbH (Housing Association)
Total size of area: 2 277 m2
Size of built-on area: 955 m2
Total floor area: 4 775 m2
Building costs: (approx. £ 2.6 million))
Costs of external
facilities: 240 000 DM (approx. £ 83 360)
Incidental construction costs: 1 300 000 DM (approx. £ 451 550)

Source of Information

162

European Academy of the Urban Environment (ed.); D. Kennedy, M. Kennedy (a): Designing Ecological Settlements, Berlin 1997

Contact:

Name:Landeshauptstadt Hannover
Firstname:
Telefon:++49 / 511 / 1681-0
Telefax:++49 / 511 / 5351
Address:Landeshauptstadt Hannover
Rathaus
Trammplatz 2
30159 Hannover
Germany

Cities:

Hannover :

Hannover is the capital of the federal state Land of Lower Saxony. It covers an area of 204 square kilometres. The wider conurbation of Greater Hannover has some 20 municipalities and a total population of 1.1 million. It covers an area of 2,300 square kilometres which is equal to the size of the small German state of the Saarland.

The City of Hannover has a diverse industrial structure which also includes some big companies like Volkswagen, the tyre company Continental, the battery producer Varta, the stationary producers Geha and Pelikan, and the cakes producer Bahlsen. The total conurbation has a total employment of 540,000 and 350,000 workplaces are located in the City of Hannover itself.

Hannover is also well-known as the host of important exhibitions like the world-wide biggest industrial exhibition, the computer fair CeBit, and many other specialised fairs. In the year 2000 the EXPO 2000 took place in the city.

Population:

520000

Project was added at 12.08.1998
Project was changed at 09.11.1998

Extract from the database 'SURBAN - Good practice in urban development', sponsored by: European Commission, DG XI and Land of Berlin
European Academy of the Urban Environment · Bismarckallee 46-48 · D-14193 Berlin · fax: ++49-30-8959 9919