Mondercange is the gateway to the former mining district in the industrial south of the country. As other municialities in Luxembourg, Mondercange has relatively high costs for living. The municipality has identified and implemented a special way of developing affordable housing for its residents.

Rationale for action

Mondercange lies in the densely populated southern part of the country where there is high demand for housing, including high demand for affordable housing. To provide affordable housing for its residents, the municipality of Mondercange has targeted an unused area of 4.15 hectares for development within the town. The objective of this development project, called Molter, is to create a residential district dedicated to affordable housing including a large park.

Objective

In developing this area, the municipality has chosen a special way of creating housing. Issuing building permits in Luxembourg depends on lots being developed with a specific land-use plan (PAP). The PAP specifies aspects of construction, such as density, roof form, parking, etc. and follows provisions laid out in the general land-use plan (PAG), which is valid for the entire municipality. The normal procedure in Luxembourg is for a private developer to create the PAP by contracting an urban planner or an architect. The expert then ensures the public provisions and private plans for the site are compatible. For the Molter PAP, the municipal administration contracted an urban planner. He then planned the new district respecting the public provisions and translating the development concept from the municipality into a concrete development plan. 

PAP Molter, building layout from the specific land-use plan. Source: Municipality of Mondercange.

Time frame

The PAP were developed between 2011 and 2012. After their approval in 2013, construction started until the project was realised in 2017.

Key players

Key players are the municipal administration of Mondercange, urban planning bureaus and SNHBM (the national association for affordable housing).

Implementation steps and processes

The process started with defining criteria for the plot to decide on the future use of the area. The emphasis was put on affordable housing for specific population groups. The allocation of the housing units will depend on the applicant’s age, number of years lived in the municipality and children in the household. Additionally, the housing will be available for families that do not have property yet and that are eligible for a construction premium, as defined by the Ministry of Housing. So, the units are for people in real need of affordable housing. Once the criteria and conditions were established, the municipality tendered the planning procedure. Construction was realised by SNHBM, between 2013 and 2017.

Required resources

Municipalities implementing such approaches must invest more time and money. If a developer creates the PAP, the role of the municipality is limited to the approval procedure. After that it has limited possibilities to influence future use of the plot.

The project illustrates that municipalities creating PAP independently have a strong planning tool at hand. This pre-supposes willingness to invest time and effort. The municipality of Mondercange had to allocate financial resources and labour input to manage the process. The process included managing the procurement and coordinating the cooperation with SNHBM. The urbanistic office (service urbanisme) of Mondercange was in charge of the process. Such a planning process comes at a cost but provides significant added-value for the municipality by making it possible to actively shape developments.

Results

As the municipality has created the PAP, it was possible for the administration to lay out provisions for the site. Mondercange thus created a new district to its own design with 55 single family houses within the municipality. The price per square metre for these houses is lower than the average price for housing in the country of Luxembourg. New and old residents also benefit from a new, large park that was built in the centre of the new district.

Experiences, success factors, risks

The approach is a positive way to develop municipal land. Generally, this requires more efforts (for coordination and procurement of the planning process) but it provides significant opportunities for municipal administrations to actively shape the urban pattern. The case of Mondercange also illustrates how political priorities in the field of affordable housing can be realised through concrete projects in the municipality.

PAP Molter, building layout and the park area from the specific land-use plan. Source: Municipality of Mondercange.

Conclusion

A stable political and administrative framework for local experts and urban planners is key. Such projects usually take longer than a single legislative period. Additionally, the project shows a way of cooperating between different levels of decision-making. SNHBM, a national actor and the municipality of Mondercange as the local stakeholder, have managed to create affordable housing, bypassing market influences. This is important, as private developers are usually less motivated to create affordable housing.

Contacts

Municipal administration of Mondercange: commune@mondercange.lu

Nonnewisen is a development in Esch-sur-Alzette, the second biggest city of Luxembourg, in the South of the country. The development covers 30 hectares of previously agricultural and horticultural land at the northern outskirts of the municipality.

Rationale for action

In Esch-sur-Alzette, prices for housing increased continuously in recent years following the national trend. This has been boosted by the large-scale development of Belval, a former steel-production site close-by, now converted into a new city district. To address the shortage of affordable housing, the municipality of Esch-sur-Alzette in cooperation with Fonds du Logement (the national housing fund) initiated conversion of the site from agricultural land and allotments into a residential area.

Objective

Nonnewisen is a new district, integrated into the existing urban fabric. When finalised, it will provide around 900 highly modern housing units, hosting 2 300 to 2 500 inhabitants. Providing a high standard of living in the new district is one of the main objectives. Because the district is part of the existing urban fabric of the city. A high population density for the new district is envisaged. To ensure a high quality of life, emphasis was put on high quality green urban areas as recreational sites between and within buildings.

Additionally, the functional mix between living, working, recreation and consuming provides a high level of service for residents. There will be a new school for 300 to 320 students, a day care centre and a central space with shops. Blending different functions ensures that services will be easily accessible by soft means of transport and the site will also be a centre of attraction for the older, surrounding districts.

Another priority was to keep unit costs low. This was achieved by constructing high density buildings, saving material and effort. Economies of scale reduce construction costs. The municipality together with Fonds du Logement allocate residential units directly, excluding real estate agencies, which makes it possible to determine prices independently of market influences.

Timeframe

The project is being developed since 2003. Development of the district is still ongoing in 2021.

Key players

Fonds du Logement is in charge for creating a third and the Municipality of Esch-sur-Alzette is in charge of creating two thirds of the planned accommodation. A large number of planners and architects, private as well as public land land owners are also involved.

Implementation steps and processes

In 2003, the first call for proposals for an urban concept was launched, which was awarded to a Dutch firm. A key criterion was that the new area and buildings integrate well with the surrounding urban fabric. Building the new area following the state of the art construction techniques was equally important as environmental protection in the design of the concept.

For the implementation, the terrain was acquired. Around 20 hectares were already owned by the municipality of Esch-sur-Alzette and a small piece of land belonged to the state. The rest is being bought piece-by-piece from the private owners. Even though development has started in some areas, negotiations with owners of other areas are still ongoing. In 2007, construction of the first units started and in 2011 the first part with 17 apartments and 23 single-family houses was inaugurated by Fonds du Logement. In 2012, another 25 single-family houses, 4 double family-houses and 42 student residences were finalised. In 2015, the third phase provided 32 single-family houses, 24 apartments and ~500 m2 of commercial space. In 2017, 8 commercial spaces, 40 more single-family homes and 75 apartments have been completed.

Buyers of subsidised units provided by Fonds du Logement need to be eligible for a housing construction bonus from the state. This is linked to social criteria such as a below-average household income. Under this, 130m2 of subsidised housing costs around EUR 444 000, or some EUR 1 000 per m2 below the average price in Luxembourg in 2016. Such buyers can also access other financial support. Non-subsidised units can be purchased by anyone and 130 m2 of non-subsidised housing costs around EUR 472 000.

Units can only be bought for a term of 99 years. This is through heredity leasehold that costs around EUR 50 per month. People need to live at least 20 years in the units before they can sell their property again and Fonds du Logement has unconditional pre-emption right. Units sold by the municipality (2/3 of the total units built) can be purchased for a lower price. They are sold without heredity leasehold and thus do not include a usage restriction on 99 years.

Type of wooden single-family houses in the new district. Source: Fonds du Logement, 2020.

Required resources

The development of the new district is organised in stages. The project is not yet completed so total costs are still unknown. As an example, the price for the third phase (32 single-family houses, 24 apartments and ~500 m2 of commercial space) was EUR 17.5 million.

Results

The new district offers residents an attractive environment with a high quality of life. It borders many public green spaces and is close to the city centre of Esch-sur-Alzette. The new district is well connected to surrounding districts as new infrastructure has been created within and towards Nonnewisen and so far the mix of functions promises to be successful.

Nonnewisen development plan ‘urban gardens’. Source: City of Esch-sur-Alzette, Fonds du Logement, 2003.

Experiences, success factors, risk factors

The development shows how an urban environment can be shaped to provide liveable and affordable housing. All proposals submitted in 2003 under the limited competition procedure were in line with the primary requirements of the public institutions that have triggered the development (the municipality and Fonds du Logement). A cooperative competition process permitted the authorities and tenderers to find common solutions to identified problems. During the planning and implementation of the project, the municipality worked closely together with the Fonds du Logement. The stepwise approach of the developments ensures that the construction of the new district does not overburden the resources at hand.

Nonnewisen is also an innovative design concept. Issues, resulting from high density were structurally addressed in the planning process by providing areas where residents can meet and where they remain alone.

Conclusions

Nonnewisen illustrates how innovative urban forms of housing can look in the future and that high densities are no rejection to a high standard of living. A pre-condition for the development of the site was the ownership structure. Most of the area needed for the development of Nonnewisen is public property and only some areas have to be purchased from private owners. Considering future adaptions of the structure of the district, the recreational green areas are important in order to sustain a quality of life in Nonnewisen.

Contact

Ms Daisy Wagner, chief planner of the city of Esch-sur-Alzette: Daisy.Wagner@villeesch.lu

Late 2020, we interviewed Ms Lydie Polfer, Mayor of Luxembourg City on the role and potential of climate change adaptation in urban planning and municipal development. The interview also addressed questions on climate action in the capital of the Grand Duchy of Luxembourg.

Interviewer: Ms Polfer, measures addressing climate change can be for climate action, such as measures decreasing hazardous emissions, or for adaptation, so measures dealing with the consequences of climate change. What role does urban and district development play in adapting to climate change?

Mayor Polfer: Climate change adaptation and also climate action are key aspects that need to be considered together when planning in urban areas. On the one hand, climate actions reduce emissions of inhabitants and businesses in a district. On the other hand, climate change adaptation helps to protects inhabitants from natural hazards resulting from climate change.

There is a wide range of possible measures for climate action in the urban environment. For example, in Luxembourg City, we focus on reducing the need for transport by creating functional mixtures in the urban pattern. We adopt circular economy approaches, enabling building material to be reused and recycled in urban construction and we favour net-zero-energy buildings. These measures all have a positive impact on the energy footprint. To reduce this footprint, sustainable transport is also important. Just to give an example, Luxembourg City is a frontrunner in electric public mobility and about 30 % of the city busses are electric as of today in 2020.

For climate change adaptation, we focus on renaturalised rivers and waterways to increase absorption of rainwater in urban areas. We test technical measures for rainwater retention in ponds or temporary reservoirs and we try to limit the amount of soil sealed in existing and newly built-up urban areas. The guiding documents for our city to address climate action and climate change adaptation are the Municipal Environmental Report and Action Plans. These annual reports and plans orient Luxembourg City measures. They help us to work towards a good and secure urban life, and an urban life in line with sustainability objectives.

Interviewer: Where do you see priorities or opportunities to use existing or new spatial planning and urban development instruments for climate change adaptation in Luxembourg?

Mayor Polfer: The City of Luxembourg uses three complementary planning instruments for climate change adaptation. The land-use plan, so-called PAG, the special development plan, the PAP, and the Municipal Building Regulation, defining requirements and technical specifications for buildings and infrastructure.

The PAG is used for zoning areas and defines density requirements and limitations to soil sealing. With the PAP and the Municipal Building Regulation, the municipality uses two more nuanced instruments. These enable our municipal planners to take decisions on the future layout of areas and the location, orientation and shape of buildings. They also detail surfaces to be kept unsealed, and even define materials to be used. Also, we look to optimise the number of parking spaces to keep areas open that are usually sealed. This way, we integrate various elements in our plans to ensure that transformations and new developments are adapted to climate change. And of course, for climate action, these tools work equally well.

We conduct many experiments in urban planning practices and we research experimental building techniques. This leads to a high number of innovations in the building sector, especially in view of climate change. An example is the use of grey water, or rainwater in large residential buildings or greening roofs, for which new concepts are being tested. To benefit from the latest innovations, we need measures that allow us to design the district differently. Faster procedures and increased openness of projects towards new insights and concepts on climate action and adaptation in planning is required.

Interviewer: What potential for climate change adaption is there from converting urban brownfields?

Mayor Polfer: In conversion or re-conversion projects, for example ‘Porte de Hollerich’ or the 10 hectare area of ‘Josy-Barthel’, planners have a free hand. When we develop a district from scratch, we face fewer limitations. We also need to compromise less when it comes to implementing climate change adaptation measures. For example, a river can take its natural course again, an inundation area can fulfil its initial function. It also provides us with unique opportunities to design park areas as both zones helping to adapt the city to climate change and also as recreation areas for inhabitants of the districts.

Planning on unbuilt land also allows us to develop a priori climate change adaptation and action concepts that guide urban design and the layout. This way, the best option, yielding the best protection or adaptation can be planned and tested before being realised. We look at such concepts not just at the neighbourhood level but also for the district. Hence these new urban developments are key to increasing the resilience of our city, as changes to existing urban districts are limited for various reasons.

However, the question of ownership significantly influences climate change adaptation measures in such urban projects. Unless all land is owned by the City of Luxembourg, we rely on a consensus between all owners on what climate change adaptation measures will be implemented. If an owner does not approve, the procedure is postponed, or the plans have to be amended, compromising on the planned adaptation measures.

Interviewer: How can one combine the persistently high pressure on the housing market with measures of climate change adaptation, in your opinion?

Mayor Polfer: High pressure on the housing market and climate change adaption are not mutually exclusive. In a way, planning in cities is already an adaptation and a climate action measure. Let’s take the example of the City of Luxembourg. Luxembourg City accounts for about 2 % of the national territory and of this 2 % half are green areas, so forests, grassland, pastures or farmland. At the same time, about 20 % of the country’s population lives on the other 1 % and about 40 % of the national workplaces are located in the City of Luxembourg.

This results in density that offers proximity to daily activities such as workplaces or grocery shops, for inhabitants, reducing the need for transport. This helps us to offer much more targeted and effective measures.

The City of Luxembourg population has increased by more than 30 % during the past 10 years. This very high pressure is a challenge to urban planning in many ways. Increasing traffic, increasing pressure on the housing market, increasing pressure on public services, and so on. But despite this pressure, we have managed to make progress in achieving our environmental objectives, defined in the Municipal Environmental Report and Action Plans. This applies to the climate action measures, so to lower energy consumption or less municipal waste. This also applies to the adaptation measures, including the implementation of natural water retention systems or unsealing soil.

Of course, this does not come easily: when planning urban districts, we integrate environmental aspects in the conception plans from the very beginning. Therefore, it is important that the objectives and measures are clearly defined. This way, urban development and other urban functions can incorporate and work on environmental protection and climate change adaptation.

Mayor Lydie Polfer. Copyright: Maison Moderne – LaLa La Photo.

Interviewer: What is the role of the CIPU for climate change adaptation in Luxembourg?

Mayor Polfer: Urban development and planning is a complex and interrelated matter. When we develop plans, we usually touch on a variety of inter-connected disciplines, requiring us to work with various constrains and limitations. Sometimes urban planning meets disapproval from inhabitants and experts in related fields. Climate action and adaptation measures especially require planners to plan in a way that does not appear logical to the outside viewer.

CIPU should enhance mutual understanding and coordination between different policy fields, between planners and also between planners and inhabitants. This way, CIPU could be a mediator in the framework of urban development and for this year, focusing on climate change adaptation.

Interviewer: Thank you very much Mayor Polfer for the interview.

In case of questions or comments, please feel free to contact the editor (sebastian.hans@spatialforesight.eu) of this article.

Wiltz is a city in the north of the Grand Duchy of Luxembourg. The city is the only urban centre with more than 7 000 inhabitants in the sparsely populated north and is therefore classified as a national centre of attraction. Until 2030, the municipality and the state would like to see an increase of population to reinforce the city’s position as ‘capital of the north’. One step in this is a master plan for developing a 25.5 hectare district in the city centre, called ‘Wunne mat der Wooltz’.

Rationale for action

The area covered by the master plan lies between Oberwiltz and Niederwiltz and was an industrial area with many factories. The area experienced a downturn when structural changes decreased the demand for industrial goods. Already in 1996 the municipality has identified the need to develop this district next to the city centre.

The master plan shall help developing Wiltz as the capital of the North by attracting more inhabitants and jobs. This is in line with the decentralisation objectives and the ‘CAP 2030’ integrative development plan for the municipality of Wiltz (‘plan integratif du développement de la commune de Wiltz’) for the municipality and the northern region.

The plan is to merge the former districts of in der Geetz, Lambert/Baumaself and Eurofloor. The new district will support the regional development targets for 2030 to make the city more attractive for residents and businesses.

Model of the future district ‘Wunne mat der Wooltz’. Source: Fondsdulogement.lu

Objective

The plan envisages creating 1 000 new residential units in the new district. This will provide housing for 2 000 additional inhabitants and about 550 new jobs will be created in the new district. The 25.5 hectare project is a classic conversion as the site was previously industrial.

The new residential area will be integrated into the existing urban fabric. New green public spaces and public functions (i.e. schools) will not only be used by new residents. They shall also become points of attraction for the inhabitants of the surrounding districts. Additionally, the area will connect two neighbourhoods previously separated by the industrial site.

Time frame

The technical feasibility study was conducted between 2010 and 2011. The master plan was developed from 2013 to 2017 and construction started in 2018. The district will be finalised until 2030.

Implementation steps and processes

Since 1996, the municipality of Wiltz has underlined the potential to transform an der Wooltz into a new residential district. However, the city did not have the financial means to realise an independent development. In 2010, the state reviewed the city’s plan and contracted a technical preparatory study as well as an urban management plan as input for the local land-use plan. In the meantime, a concept for de-pollution was elaborated. From 2013 to 2017, a master plan detailing the construction was created with the cooperation of 19 public partners. The first civil works, namely tearing down the factory buildings and de-polluting the soil ran from 2014 to 2015. With the finalisation of the master plan in 2017, the planning stage was completed and the concept was presented to the public.

Development involved 19 public actors working closely together. The master plan is thus a result of thorough cooperation between different public representatives and fields of expertise (housing, environmental protection, commerce, etc.).

Model of the future district ‘Wunne mat der Wooltz’, view towards East. Source: Fondsdulogement.lu

Required resources

The costs amounted to EUR 2 300 000 for planning, demolition and de-pollution of the former industrial area.

Results

The planning and the preparatory works have been completed. Construction however will only start after the approval of the PAP (specific land use plans), which act as building permits. They were submitted for approval in late 2017 and approved in 2018. Since then, construction for developing the new district started.

Construction and assignment of units will be organised through Fonds du Logement, a public developer, guaranteeing a social mix of residents in the new district. Housing will be assigned conditional on low household income, or the number of children.

Experiences, success factors, risks

With units for 1 800 inhabitants, the city will be able to increase its population by 30%. The district does not only target residents currently living outside of the municipality. Key to success is to encourage also current residents to move to the new district, for instance by making the new housing units more attractive and comfortable than those currently available in the surrounding neighbourhoods.

Model of the future district ‘Wunne mat der Wooltz’, view towards West. Source: Fondsdulogement.lu

Conclusions

Pressure on housing in Wiltz is less strong than in central or southern Luxembourg. Within the city and surrounding villages, the urban fabric could still absorb more new residents. The example of Wunne mat der Wooltz must be seen against very positive demographic and economic forecasts for the country in the upcoming years. At the same time, the government is pursuing a decentralisation policy, making regional centres more attractive. A significant increase in population and businesses in regional centres such as Wiltz, is envisaged.

The example follows the tradition of planning flagship projects in Luxembourg. Compared to other available areas in villages and cities, conversions could be a more general instrument of spatial planning and territorial development. So far, these urban developments are still exceptions not least because they are large and require significant finance. Providing a toolbox to municipalities could also give local administrations the opportunity to implement smaller conversion projects independently from the state. Collaboration across different levels in a small country such as Luxembourg risks local interests being strongly influenced by state objectives.

Model of the future southern district of the development ‘Wunne mat der Wooltz’. Source: Fondsdulogement.lu

Contact

Wiltz City Management: citymanagement@wiltz.lu

The urban development ‘am Duerf’ was inaugurated in 2017 to revive and increase the
attractiveness of an area next to Dudelange city centre. Development of housing, parking and commercial areas in an area previously used as open-air parking started in 2005. The
municipality of Dudelange has developed an adjacent shared space to create a lively urban area.

Rationale for action

‘am Duerf’ and development of the adjacent shared space was planned next to Dudelange city centre. The area was previously used as open-air parking and backyard gardens. The
transformation also helps the city to tackle the increasing housing need.

Tackling the housing shortage is a key priority on the political agenda in Luxembourg. By
constructing more housing units, the shortage of living space can be reduced and prices could drop. Some 13 000 new residents settle each year in Luxembourg overall, exceeding the annual supply of living space.

Larger cities, being the main centres of attraction, play an important role in accommodation. Housing developments within existing settlement structures and urban fabric can limit urban sprawl. Also, housing developments within urban centres provide the potential for densification and the development of vacant lots.

The project ‘am Duerf’ is also an attempt to counter the movement of urban functions to the periphery. By developing commercial functions, parking and housing in their centres, cities remain attractive. Restoration of public spaces also increases their attractiveness.

Central square of the project. Source: ondiraitlesud.lu

Objective

The ‘am Duerf’ project was designed to create an attractive new urban centre with parking, commerce and living spaces. Through these functions and the shared space, the amenities are not only for residents but also for inhabitants of surrounding areas.

The shared space was designed to overcome divisions between different modes of transport that could be troublesome. It combines pathways of individual, common and soft transport in a common zone with a focus on soft and public modes of transport. Breaking the divisions between different modes of transport increases the quality of the public space.

Time frame

The development ‘am Duerf’ was inaugurated in 2017. Building works to create the district started in 2014, the development of the shared space was started in 2016.

Key players

The key players are the City of Dudelange, with the Ministry of Housing and the Ministry Energy and Spatial Planning in supporting functions. The district was planned by the architect and urbanism bureau STEINMETZDEMEYER from Luxembourg. Private developers implemented the project.

Architecture of the project. Source: ondiraitlesud.lu

Implementation steps and processes

The site of ‘am Duerf’ was owned by a private real estate developer who was also the project developer. Implementation began in 2005, when the idea came up to increase the city centre’s attractiveness by developing the area. An architectural competition was held in 2006. Development of the shared space is in three phases with the last due to be finalised in 2020.

Required resources

The total amount of urban development is unknown. The resources required to develop the shared space was EUR 3.5 million and the project was co-financed by the ERDF (European Regional Development Fund) through an Integrated Territorial Investment project for nearly EUR 1 million.

Results

The project ‘am Duerf’ resulted in three multi-functional buildings. Public spaces in between are used as crossroads for residents and inhabitants of the surrounding districts. A total of 104 apartments include studios, one to three bedroom-, two-story- and penthouse-apartments. Two apartments are rented as social housing. All units were built using state of the art principles to ensure maximum living quality and sustainability.

The design of ‘am Duerf’ places functionalities within the district on different levels. The
parking floor in the basement provides about 180 parking places very close to the city centre, as well as public and soft modes of transport. These are 70 more places than before, when the area was used as open-air parking. The ground floors provide 4 400 m2 of new commercial surfaces for a supermarket, hairdressers, cafés and more. Floors one to four are dedicated to apartments.

The adjacent shared space integrates this new district into the existing urban pattern. With
fewer barriers separating pedestrians, cyclists and vehicles, it invites interaction across streets, bridging barriers between old structures and new developments. The development has created a new public space in the centre of Dudelange using contemporary architecture and modern urban development planning.

Experiences, success factors, risks

Integrated planning enabled several functions to be combined in the new district including
new residences for new and former inhabitants as well as commercial surfaces. The preceding function of parking could even be extended. The vertical division of functions in the new district into parking, public space/commercial and residential areas help improving urban life and attractiveness. Separating functions on different floors allows their full development without getting in each other’s way. At the same time, the shared space enables a functional mix and social interaction that enlivens the district.

Conclusions

‘am Duerf’ and the shared space in Dudelange is an innovative urban development project. Following state of the art planning principles and modern urban architecture, the project improves the quality of life within and around the new district. This has led to a revival of the city centre, not least because of modern architecture and urban planning. In conclusion, ‘am Duerf’ and the shared space have contributed to changing the image of Dudelange’s city centre.

Contact

If you wish to receive further information, please contact Ms Eva Gottschalk, municipality of Dudelange: Eva.Gottschalk@dudelange.lu