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Diagoon Houses

Created on 25-03-2022 | Updated on 11-11-2022

In an increasingly heterogeneous society, with varied family structures, incomes and cultural backgrounds, there is a need to provide for housing alternatives that adapt to the users’ requirements. Since the past century, there has been an increasing concern on how dwellings should incorporate the space-time concept as a way to allow for the change and growth of a dwelling. Herman Hertzberger introduced the term “spatial polyvalency” in the late 1960’s which is strongly related to Habraken’s theories to divide the building into different control levels to facilitate user participation and freedom of choice. This spatial polyvalency was applied in the development of the experimental Diagoon Houses (1967-1971), where the architecture was understood as a carcase that  allowed each user to inhabit the space differently, which led to the change and growth of the dwelling, characteristic features of a mass society. This case study proves that true value of participation lies in the effects it has on its participants. The same living spaces when seen from different eyes at different situations, resulted in unique arrangements and acquired different significance. Through the signs of occupancy, the building has become a visual demonstration of its own use.  

With regard to its construction system, the repetition of mass-produced components and the prefabrication of the façade elements allowed to lower the cost of the housing units. This intertwining between flexible spatial configurations and the affordability associated with mass production was the spark of mass customisation in the housebuilding industry, which combines the efficiency of prefabrication and the flexibility of personalisation, aiming for a more democratic architecture. 

Architect(s)
Herman Hertzberger

Location
Delft, The Netherlands

Project (year)
1967-1971

Construction (year)
1971

Housing type
Terraced houses

Urban context
Suburb

Construction system
Mix of in-situ and prefabricated components

Selected option
New building Built

Description

The act of housing

The development of a space-time relationship was a revolution during the Modern Movement. How to incorporate the time variable into architecture became a fundamental matter throughout the twentieth century and became the focus of the Team 10’s research and practice. Following this concern, Herman Hertzberger tried to adapt to the change and growth of architecture by incorporating spatial polyvalency in his projects. During the post-war period,  and as response to the fast and homogeneous urbanization developed using mass production technologies, John Habraken published “The three R’s for Housing” (1966) and “Supports: an Alternative to Mass Housing” (1961). He supported the idea that a dwelling should be an act as opposed to a product, and that the architect’s role should be to deliver a system through which the users could accommodate their ways of living. This means allowing personal expression in the way of inhabiting the space within the limits created by the building system. To do this, Habraken proposed differentiating between 2 spheres of control: the support which would represent all the communal decisions about housing, and the infill that would represent the individual decisions. The Diagoon Houses, built between 1967 and 1971, follow this warped and weft idea, where the warp establishes the main order of the fabric in such a way that then contrasts with the weft, giving each other meaning and purpose.  

A flexible housing approach

Opposed to the standardization of mass-produced housing based on stereotypical patterns of life which cannot accommodate heterogeneous groups to models in which the form follows the function and the possibility of change is not considered, Hertzberger’s initial argument was that the design of a house should not constrain the form that a user inhabits the space, but it should allow for a set of different possibilities throughout time in an optimal way. He believed that what matters in the form is its intrinsic capability and potential as a vehicle of significance, allowing the user to create its own interpretations of the space. On the same line of thought, during their talk “Signs of Occupancy” (1979) in London, Alison and Peter Smithson highlighted the importance of creating spaces that can accommodate a variety of uses, allowing the user to discover and occupy the places that would best suit their different activities, based on patterns of light, seasons and other environmental conditions. They argued that what should stand out from a dwelling should be the style of its inhabitants, as opposed to the style of the architect. User participation has become one of the biggest achievements of social architecture, it is an approach by which many universal norms can be left aside to introduce the diversity of individuals and the aspirations of a plural society.  

The Diagoon Houses, also known as the experimental carcase houses, were delivered as incomplete dwellings, an unfinished framework in which the users could define the location of the living room, bedroom, study, play, relaxing, dining etc., and adjust or enlarge the house if the composition of the family changed over time. The aim was to replace the widely spread collective labels of living patterns and allow a personal interpretation of communal life instead. This concept of delivering an unfinished product and allowing the user to complete it as a way to approach affordability has been further developed in research and practice as for example in the Incremental Housing of Alejandro Aravena. 

Construction characteristics

The Diagoon Houses consist of two intertwined volumes with two cores containing the staircase, toilet, kitchen and bathroom. The fact that the floors in each volume are separated only by half a storey creates a spatial articulation between the living units that allows for many optimal solutions. Hertzberger develops the support responding to the collective patterns of life, which are primary necessities to every human being. This enables the living units at each half floor to take on any function, given that the primary needs are covered by the main support. He demonstrates how the internal arrangements can be adapted to the inhabitants’ individual interpretations of the space by providing some potential distributions. Each living unit can incorporate an internal partition, leaving an interior balcony looking into the central living hall that runs the full height of the house, lighting up the space through a rooflight.  

The construction system proposed by Herztberger is a combination of in-situ and mass-produced elements, maximising the use of prefabricated concrete blocks for the vertical elements to allow future modifications or additions. The Diagoon facades were designed as a framework that could easily incorporate different prefabricated infill panels that, previously selected to comply with the set regulations, would always result in a consistent façade composition. This allowance for variation at a minimal cost due to the use of prefabricated components and the design of open structures, sets the foundations of the mass customization paradigm.  

User participation

While the internal interventions allow the users to covert the house to fit their individual needs, the external elements of the facade and garden could also be adapted, however in this case inhabitants must reach a mutual decision with the rest of the neighbours, reinforcing the dependency of people on one another and creating sense of community. The Diagoon Houses prove that true value of participation lies in the effects it creates in its participants. The same living spaces when seen from different eyes at different situations, resulted in unique arrangements and acquired different significance. User participation creates the emotional involvement of the inhabitant with the environment, the more the inhabitants adapt the space to their needs, the more they will be inclined to lavish care and value the things around them. In this case, the individual identity of each household lied in their unique way of interpreting a specific function, that depended on multiple factors as the place, time or circumstances. While some users felt that the house should be completed and subdivided to separate the living units, others thought that the visual connections between these spaces would reflect better their living patterns and playful arrangement between uses.  

After inhabiting the house for several decades, the inhabitants of the Diagoon Houses were interviewed and all of them agreed that the house suggested the exploration of different distributions, experiencing it as “captivating, playful and challenging”1. There was general approval of the characteristic spatial and visual connection between the living units, although some users had placed internal partitions in order to achieve acoustic independence between rooms. One of the families that had been living there for more than 40 years indicated that they had made full use of the adaptability of space; the house had been subject to the changing needs of being a couple with two children, to present when the couple had already retired, and the children had left home. Another of the families that was interviewed had changed the stereotypical room naming based on functions (living room, office, dining room etc.) for floor levels (1-4), this could as well be considered a success from Hertzberger as it’s a way of liberating the space from permanent functions. Finally, there were divergent opinions with regards to the housing finishing, some thought that the house should be fitted-out, while others believed that it looked better if it was not conventionally perfect. This ability to integrate different possibilities has proven that Hertzberger’s experimental houses was a success, enhancing inclusivity and social cohesion. Despite fitting-out the inside of their homes, the exterior appearance has remained unchanged; neighbourly consideration and community identity have been realised in the design. The changes reflecting the individual identity do not disrupt the reading of the collective housing as a whole.  

Spatial polivalency in contemporary housing

From a contemporary point of view, in which a housing project must be sustainable from an environmental, social and economic perspective, the strategies used for the Diagoon Houses could address some of the challenges of our time. A recent example of this would be the 85 social housing units in Cornellà by Peris+Toral Arquitectes, which exemplify how by designing polyvalent and non-hierarchical spaces and fixed wet areas, the support system has been able to accommodate different ways of appropriation by the users, embracing social sustainability and allowing future adaptations. As in Diagoon, in this new housing development the use of standardized, reusable, prefabricated elements have contributed to increasing the affordability and sustainability of the dwellings. Additionally, the use of wood as main material in the Cornellà dwellings has proved to have significant benefits for the building’s environmental impact. Nevertheless, while this matrix of equal room sizes, non-existing corridors and a centralised open kitchen has been acknowledged to avoid gender roles, some users have criticised the 13m² room size to be too restrictive for certain furniture distributions.

All in all, both the Diagoon houses and the Cornellà dwellings demonstrate that the meaning of architecture must be subject to how it contributes to improving the changing living conditions of society.  Although different in terms of period, construction technologies and housing typology, these two residential buildings show strategies that allow for a reinterpretation of the domestic space, responding to the current needs of society.  

Alignment with project research areas

Even though the Diagoon experimental houses were built in the late 1960s with very different building techniques, planning, or financing schemes, some of their features and achievements demonstrate a significant relevance with the three research areas of the RE-DWELL trandisciplinary research.  

With regard to Design, Planning and Building, the project promotes resilient design by creating a system that can adapt and incorporate new uses over time supporting the creation of building regeneration through versatility and flexible housing layouts. This, along with the use of prefabricated components to lower the costs making it possible to approach a greater segment of society, leads to a democratization of housing. In addition, Diagoon could be considered as sustainable housing in the way it promotes social cohesion, green spaces and integrates changes with minimum waste. 

The case study demonstrates a strong alignment with the Community Participation area, where not only the interior arrangements were completely decided by the users, but as well the boundaries between their individual green spaces were agreed between neighbours, stimulating collective activities and decision-making amongst them. The control levels proposed by Habraken are exemplified in the different ways of participation, from the urban level until the individual dwelling layout.   

Regarding Policy and Financing, the approach that Hertzberger proposes by dividing the house into the support and the infill, could potentially facilitate certain financial innovative strategies to increase housing affordability, as for example the shared ownership schemes.  

Therefore, in order to implement an affordable and flexible housing system supported by community participation, the three research areas should be taken into account, as the interrelations and dependencies between each other would be necessary for a successful outcome. 

Design, planning and building

Community participation

Policy and financing

* This diagram is for illustrative purposes only based on the author’s interpretation of the above case study

Alignment with SDGs

Although the Sustainable Development Goals had not been established at the time when this project was developed, the examined case study suggests several alignments with some of the goals and targets. There are many qualities that could be extracted from these experimental houses to be incorporated in future housing developments. 

With regard to the SDGs 9 and 12, the Diagoon Houses support the construction of sustainable and resilient infrastructures as well as reducing the waste generation. The intrinsic polyvalency in the living spaces enables the user to change the way of inhabiting the dwelling without having to make major changes to it. The project enhances resiliency by providing a carcase that allows the flexibility to host a family with or without children, one who wishes to develop professional activities at home or even the alternative to create an independent studio to rent. Furthermore, this is tightly linked with the way in which this project fosters SDG 10, as it promotes social and economic inclusion. The fact that the property is given unfinished to the user means that each household determines their internal fit-out based on the most suitable for each economy at that given moment, being able to incorporate improvements over time. Consequently, this variability of economic means and needs in a multi-family development could encourage social inclusion.  

Finally, the Diagoon Houses are especially related to the SDG 11 as it approaches the goal in multiple ways. This paradigmatic project could serve as an example to develop affordable housing as it demonstrates that low-budget construction is not opposed to high-quality architecture. In addition, it fosters an inclusive and sustainable urbanization by supporting participatory design and allowing diverse family structures to coexist.  

References

Literature: 

Aravena, A. (2016) Creando Una Nueva Forma de Habitar. E2E. (n.d.). Retrieved September 19, 2022, from https://www.e2echile.com/vivienda-incremental.html  

Grijalba Bengoetxea, A., Merino del Río, R., & Grijalba Bengoetxea, J. (2019). Representando el tiempo: polivalencia espacial en las viviendas Diagoon y Centraal Beheer. EGA Revista de Expresión Gráfica Arquitectónica, 24(35). https://doi.org/10.4995/ega.2019.9571 

Habraken, N. J., (1966). Three R’s for housing. Amsterdam, Scheltema & Holkema: Forum, vol. XX, nº1 

Habraken, N.J. (1961). Supports: An Alternative to Mass Housing (1st ed.). Routledge. https://doi.org/10.4324/9781003014713 

Hatch, R. (1984). The Scope of social architecture. New York: Van Nostrand Reinhold 

Hertzberger, H. (1991). Lessons for students in architecture. Rotterdam: Uitgeverij 010 Publishers 

Hertzberger, H. (2016 June). Diagoon Housing Delft 1967-1970. Herman Hertzberger. 
https://www.hertzberger.nl/index.php/en/ 

Hull, a. J., (2010) Architecture in Transition: Herman Hertzberger and The Diagoon Dwellings Revisited. 
Retrieved September 19, 2022 from https://static1.squarespace.com/static/567ee040a128e603ba9cfbf0/t/567f50a140667a31535e3787/1451184289847/Architecture+in+Transition.pdf 

Smithson, A., Smithson, P. (1979). Signs of Occupancy [Recorded talk] Pidgeon Audio Visuals. https://www.pidgeondigital.com/talks/signs-of-occupancy/  

von der Nahmer, R. (2019). Diagoon Woning 
https://www.diagoonwoningdelft.nl/visit 

 

Related vocabulary

Affordability

Co-creation

Community empowerment

Social sustainability

Area: Design, planning and building

Affordability is defined as the state of being cheap enough for people to be able to buy (Combley, 2011). Applied to housing, affordability, housing unaffordability and the mounting housing affordability crisis, are concepts that have come to the fore, especially in the contexts of free-market economies and housing systems led by private initiatives, due to the spiralling house prices that residents of major urban agglomerations across the world have experienced in recent years (Galster & Ok Lee, 2021). Notwithstanding, the seeming simplicity of the concept, the definition of housing affordability can vary depending on the context and approach to the issue, rendering its applicability in practice difficult. Likewise, its measurement implies a multidimensional and multi-disciplinary lens (Haffner & Hulse, 2021). One definition widely referred to of housing affordability is the one provided by Maclennan and Williams (1990, p.9): “‘Affordability’ is concerned with securing some given standard of housing (or different standards) at a price or a rent which does not impose, in the eyes of some third party (usually government) an unreasonable burden on household incomes”. Hence, the maximum expenditure a household should pay for housing is no more than 30% of its income (Paris, 2006). Otherwise, housing is deemed unaffordable. This measure of affordability reduces a complex issue to a simple calculation of the rent-to-income ratio or house-price-to-income ratio. In reality, a plethora of variables can affect affordability and should be considered when assessing it holistically, especially when judging what is acceptable or not in the context of specific individual and societal norms (see Haffner & Hulse, 2021; Hancock, 1993). Other approaches to measure housing affordability consider how much ‘non-housing’ expenditures are unattended after paying for housing. Whether this residual income is not sufficient to adequately cover other household’s needs, then there is an affordability problem (Stone, 2006). These approaches also distinguish between “purchase affordability” (the ability to borrow funds to purchase a house) and “repayment affordability” (the ability to afford housing finance repayments) (Bieri, 2014). Furthermore, housing production and, ultimately affordability, rely upon demand and supply factors that affect both the developers and home buyers. On the supply side, aspects such as the cost of land, high construction costs, stiff land-use regulations, and zoning codes have a crucial role in determining the ultimate price of housing (Paris, 2006). Likewise, on the policy side, insufficient government subsidies and lengthy approval processes may deter smaller developers from embarking on new projects. On the other hand, the demand for affordable housing keeps increasing alongside the prices, which remain high, as a consequence of the, sometimes deliberate incapacity of the construction  sector to meet the consumers' needs (Halligan, 2021). Similarly, the difficulty of decreasing household expenditures while increasing incomes exacerbates the unaffordability of housing (Anacker, 2019). In the end, as more recent scholarship has pointed out (see Haffner & Hulse, 2021; Mulliner & Maliene, 2014), the issue of housing affordability has complex implications that go beyond the purely economic or financial ones. The authors argue that it has a direct impact on the quality of life and well-being of the affected and their relationship with the city, and thus, it requires a multidimensional assessment. Urban and spatial inequalities in the access to city services and resources, gentrification, segregation, fuel and commuting poverty, and suburbanisation are amongst its most notorious consequences. Brysch and Czischke, for example, found through a comparative analysis of 16 collaborative housing projects in Europe that affordability was increased by “strategic design decisions and self-organised activities aiming to reduce building costs” (2021, p.18). This demonstrates that there is a great potential for design and urban planning tools and mechanisms to contribute to the generation of innovative solutions to enable housing affordability considering all the dimensions involved, i.e., spatial, urban, social and economic. Examples range from public-private partnerships, new materials and building techniques, alternative housing schemes and tenure models (e.g., cohousing, housing cooperatives, Community Land Trusts, ‘Baugruppen’), to efficient interior design, (e.g., flexible design, design by layers[1]). Considering affordability from a design point of view can activate different levers to catalyse and bring forward housing solutions for cities; and stakeholders such as socially engaged real estate developers, policymakers, and municipal authorities have a decisive stake in creating an adequate environment for fostering, producing and delivering sustainable and affordable housing.   [1] (see Brand, 1995; Schneider & Till, 2007)

Created on 03-06-2022

Author: L.Ricaurte (ESR15)

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Area: Community participation

In a broader sense, co-creation means the joint effort of bringing something new to fruition through acts of collective creativity (Sanders & Stappers, 2008) which can be manifested in both tangible (making something together) or intangible (learning something together) outcomes (Puerari et al., 2018). Recently, the concepts of co-creation or co- production have been applied to describe the processes of participation in urban planning and design. Both terms place particular emphasis on the partnerships formed between citizens and the public sector, in which a high level of citizen involvement is pivotal. Participation has been defined through its different levels of citizen involvement, ranging from non-participation to greater degrees of citizen control (Arnstein, 1969) indicating the different levels of influence a participant can have on a participatory process. From the perspective of urban planning, citizen participation is beginning to be described as co-creation when citizens’ roles become more prominent, presenting aspects of self-organisation, increased commitment and a sense of ownership of the process (Puerari et al., 2018). Recent research is exploring new methods of urban planning in which citizens, the municipality and private organisations co-create new planning rules (Bisschops & Beunen, 2019). However, co-creation along with co-production and participation, often used interchangeably, have become popular catchphrases and are considered as processes which are of virtue in themselves. Furthermore, while there is substantial research on these processes, the research conducted on the outcomes of enhanced participation remains rather limited (Voorberg et al., 2015). This highlights the ambiguity in terms of interpretation; is co-creation a methodology, a set of tools to enhance and drive a process, or a goal in itself? (Puerari et al., 2018). There have often been cases where participation, co-creation and co-production have been used decoratively, as a form of justification and validation of decisions already made (Armeni, 2016). In the provision of public spaces, co-creation/co-production may specifically involve housing (Brandsen & Helderman, 2012; Chatterton, 2016) and placemaking: “placemaking in public space implies engaging in the practice of urban planning and design beyond an expert culture. Such collaboration can be described as co-creation.” (Eggertsen Teder, 2019, p.290). As in participation, co-creation requires the sharing of decision-making powers, the creation of  joint knowledge and the assignation of abilities between communities, while urban professionals and local authorities should draw attention to the active involvement of community members. Furthermore, co-creation does not take place in a vacuum, but always occurs within socio- spatial contexts. This points to the objective of co-creation as a tool to influence locally relevant policy through innovation that is “place-based”. To conclude, co-creation can be perceived as a process that is both transdisciplinary in its application, and as a tool for achieving transdisciplinarity on a broader scale through a systematic integration in existing standard practices in urban planning, housing design and architecture. Despite the persisting ambiguity in its definition, co-creation processes can provide more inclusive platforms for revisiting and informing formal and informal knowledge on sustainable and affordable housing.

Created on 16-02-2022

Author: A.Panagidis (ESR8), E.Roussou (ESR9)

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Area: Community participation

Community empowerment appears in the literature of participatory action research (Minkler, 2004), participatory planning (Jo & Nabatchi, 2018), and community development (Luttrell et al., 2009) as a key element of participatory practices, understanding it as a process that enables communities to take control of their lives and their environments (Rappaport, 2008; Zimmerman, 2000). Many argue that community participation becomes meaningless if it does not lead to, or pass through community empowerment. As the term is being used in diverse and ubiquitous ways, it runs the risk of ending up as an empty definition and a catch-all phrase (McLaughlin, 2015). It is therefore important to specify the perspective through which we will view the term and clarify the nuances.  Since its origins, empowerment has been used in two different ways. Firstly, top-down as the power that had been ‘granted’ by a higher authority, such as the state or a religious institution, and secondly, bottom-up, as a process by which groups or individuals come to develop the capacity to act and acquire power. Examples of the latter can be found in social groups such as feminists working in nongovernmental organizations throughout the global south in the 1970s, who found a way to address social issues and inequalities that enabled social transformation based on women’s self-organization (Biewener & Bacqué, 2015). The term was gradually appropriated by welfare, neoliberal, and social-neoliberal agendas whose priority was individual agency and choice. In neoliberal rationality, empowerment is related to efficiency, economic growth, business productivity, and individual rational choice to maximize profit in a competitive market economy. In social liberalism agendas, empowerment is understood as ‘effective agency’, where ‘agency’ is not an inherent attribute, but something that needs to be constructed through ‘consciousness-raising’ (McLaughlin, 2016). A broader definition sees empowerment as a social action process through which individuals, communities, and organizations take control of their lives in the context of changing the social and political environment to improve equity and quality of life (Rappaport, 2008; Zimmerman, 2000). Rowlands (1997), refers to four types of empowerment: power over, as the ability to influence and coerce; power to, to organize and change existing hierarchies; power with, as the power from the collective action and power within, as the power from the individual consciousness. Using this classification, Biewener & Bacqué (2015), adopting a feminist approach, understand empowerment as a multilevel construct with three interrelated dimensions: 1) an internal, psychological one, where ‘power within’ and ‘power to’ are developed, 2) an organizational, where ‘power with’ and ‘power over’ are strengthened and 3) a social or political level, where institutional and structural change is made possible through collective action. Thus, community empowerment links the individual level, which involves self-determination, growth of individual awareness, and self-esteem, to the collective level, relating critical consciousness and capacity building with the structural level, where collective engagement and transformative social action take place. This view of empowerment, which considers its goals and processes, has a social dimension that is lacking in other approaches that prioritize individual empowerment. Aside from the feminist movements, the philosophy and practices of community empowerment have been greatly influenced by the work of Paulo Freire, a Brazilian educator and an advocate on critical pedagogy. Freire proposed a dialogic problem-solving process based on equality and mutual respect between students and teachers; that engaged them in a process of iterative listening-discussing-acting. Through structured dialogue, group participants shared their experiences, discussed common problems, and looked for root causes and the connections among “problems behind the problems as symptoms” (Freire, 1970). The term conscientization, that Freire proposed, refers to the consciousness that arises through the involvement of people in the social analysis of conditions and their role in changing them. This awareness enables groups to be reflexive and open spaces, to enact change or to understand those limited situations that may deter change (Barndt, 1989). Empowerment can be understood as both a process and an outcome (Jo & Nabatchi, 2018). As a process, it refers to “the development and implementation of mechanisms to enable individuals or groups to gain control, develop skills and test knowledge”(Harrison & Waite, 2015) and it entails the creation of new subjects who have developed a critical consciousness and the formation of groups with a ‘collective agency’ ‚ or ‘social collective identity’ (Biewener & Bacqué, 2015). Empowerment as an outcome refers to “an affective state in which the individual or group feels that they have increased control, greater understanding and are involved and active” (Harrison & Waite, 2015). This can lead to a transformation of the social conditions by challenging the structures and institutionalized forms that reproduce inequalities. The values and the significance of community empowerment can be further applied in the participatory and community-based approaches of the housing sector. Examples of such approaches in the housing provision are the housing cooperatives, and self-developed and self-managed housing groups. Housing cooperatives aim at promoting co-creation to engage future residents, professionals, and non-profit organizations in all the stages of a housing project: problem-framing, designing, developing, cohabiting, managing, and maintaining. Such organisational models stress the importance and pave the way for community empowerment by uniting individuals with similar interests and ideals, enabling them to have housing that responds to their needs, preferences, and values. The participation of the residents aims to strengthen their sense of ownership of the process, the democratic decision-making and management, and the social collective identity, making community empowerment an integral characteristic of cooperative housing initiatives. With this social perspective, residents can gain individual and collective benefits while contributing to fairer and more sustainable urban development on a larger scale (Viskovic Rojs et al., 2020).

Created on 03-06-2022

Author: Z.Tzika (ESR10)

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Area: Community participation

From the three pillars of sustainable development, economic, environmental and social, the latter  involving social equity and the sustainability of communities, has  been especially neglected. Ongoing problems caused by conflicting economic, environmental and social goals with regard to the processes of urbanisation continue. underpinning economic growth that contradict principles of environmental and social justice (Boström, 2012; Cuthill, 2010; Winston, 2009). Research on sustainable development highlights the need for further investigation of social sustainability (Murphy, 2012; Vallance et al., 2011). Social sustainability has been interpreted as an umbrella term encompassing many other related concepts; “social equity and justice, social capital, social cohesion, social exclusion, environmental justice, quality of life, and urban liveability” (Shirazi & Keivani, 2019, p. 4). A vast number of studies have been dedicated to defining social sustainability by developing theoretical frameworks and indicators particularly relevant to urban development and housing discourse (Cuthill, 2010; Dempsey et al., 2011; Murphy, 2012; Woodcraft, 2012). However, with a lack of consensus on the way of utilising these frameworks in a practical way, especially when applied to planning, social sustainability has remained difficult to evaluate or measure. Consequently, planning experts, housing providers and inhabitants alike understand social sustainability as a normative concept, according to established social norms, and less as an opportunity to critically examine existing institutions. Vallance et al (2011) provide three categories to analyse social sustainability, development, bridge and maintenance sustainability: (a) social development improves conditions of poverty and inequity, from the provision of basic needs to the redistribution of power to influence existing development paradigms; (b) the conditions necessary to bridge social with ecological sustainability, overcoming currently disconnected social and ecological concerns; and (c) the social practices, cultural preferences as well as the environments which are maintained over time. Maintenance social sustainability particularly deals with how people interpret what is to be maintained and includes “new housing developments, the layout of streets, open spaces, residential densities, the location of services, an awareness of habitual movements in place, and how they connect with housing cultures, preferences, practices and values, particularly those for low-density, suburban lifestyles” (Vallance et al., 2011, p. 345). Therefore, the notion of maintenance is especially important in defining social sustainability by directly investigating the established institutions, or “sets of norms” that constitute the social practices and rules, that in turn, affect responsibilities for planning urban spaces. A conceptual framework that appears frequently in social sustainability literature is that of Dempsey et al. (2011)⁠ following Bramley et al. (2009), defining social sustainability according to the variables of social equity and sustainability of community and their relationship to urban form, significantly at the local scale of the neighbourhood. In terms of the built environment, social equity (used interchangeably with social justice) is understood as the accessibility and equal opportunities to frequently used services, facilities, decent and affordable housing, and good public transport. In this description of local, as opposed to regional services, proximity and accessibility are important. Equitable access to such local services effectively connects housing to key aspects of everyday life and to the wider urban infrastructures that support it. Sustainability of community is associated with the abilities of society to develop networks of collective organisation and action and is dependent on social interaction. The associated term social capital has also been used extensively to describe social norms and networks that can be witnessed particularly at the community level to facilitate collective action (Woolcock, 2001, p. 70). They might include a diversity of issues such as resident interaction, reciprocity, cooperation and trust expressed by common exchanges between residents, civic engagement, lower crime rates and other positive neighbourhood qualities that are dependent on sharing a commitment to place (Foster, 2006; Putnam, 1995; Temkin & Rohe, 1998). In fact, “the heightened sense of ownership and belonging to a locale” is considered to encourage the development of social relations (Hamiduddin & Adelfio, 2019, p. 188). However, the gap between theoretical discussions about social sustainability and their practical application has continued. For example, the emphasis of social sustainability as a target outcome rather than as a process has been prioritised in technocratic approaches to planning new housing developments and to measuring their success by factors which are tangible and easier to count and audit. Private housing developers that deal with urban regeneration make bold claims to social sustainability yet profound questions are raised regarding the effects of gentrification (Dixon, 2019). Accordingly, the attempted methods of public participation as planning tools for integrating the ‘social’ have been found to be less effective - their potential being undercut due to the reality that decision-making power has remained at the top (Eizenberg & Jabareen, 2017). Therefore, social sustainability is not a fixed concept, it is contingent on the interdependence of the procedural aspects (how to achieve social sustainability) and substantive aspects (what are the outcomes of social sustainability goals) (Boström, 2012). From this point of view, social sustainability reveals its process-oriented nature and the need to establish processes of practicing social sustainability that begin with the participation of citizens in decision-making processes in producing equitable (i.e. socially sustainable) development. As a dimension of sustainable development that is harder to quantify than the economic or environmental aspects, the operationalisation of social sustainability goals into spatial, actionable principles has remained a burgeoning area of research. In such research, methods for enhancing citizen participation are a particularly important concern in order to engage and empower people with “non-expert” knowledge to collaborate with academic researchers.

Created on 03-06-2022

Author: A.Panagidis (ESR8)

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