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Over the past three decades, a small community of eighty-four Chilean low-income families has built and improved their home incrementally, without any technical assistance, showing an impressive performance. A six square meters bathroom on a serviced plot of land with individual connection to potable water, sewerage, electricity and access roads, worked as a starting point back in 1974. However particular their rationale may seem, the individual history of their housing process reveals some general regularities in occurrence and duration of self-build activities, as well as size and allocation of the domestic spaces. A small random sample of fifteen households was selected to tell the story and explain the whys, hows, and whens of an ever-evolving housing process. Semi-structured interviews and building surveys were both combined to reconstruct the sequence of states of each housing process, with the awareness of the characteristic imprecision of oral information transfer. Alternative states were explored by constraint programming methods and spatial qualitative reasoning. Considering the hard constraints over the site morphology and services allocation, the results of the exploration stress how extraordinary lucid and intuitive the surveyed families are when making their design decisions. The article exposes a reconstructive case study on spontaneous growth patterns underlying an unassisted, incremental self-build housing dynamics.

Many people living in and around Mumbai face space scarcity within homes, an issue exacerbated for families with members having differing and conflicting spatial requirements. By investigating how families live in existing residential environments, planners and designers can enable families to cope better with space scarcity.

A case study approach is used to examine four small home settings in and around Mumbai, followed by a thematic analysis of the data collected.

This study contributes a framework for studying small homes in and around Mumbai wherein they are characterized by five categories of information: internal zoning pattern, expansion pattern, spatial specialization and stratification pattern, outdoor space appropriation pattern and household adjustment pattern. Analysis through this framework gives insight into how small home settings are used by residents.

To the best of the authors’ knowledge, this is the first study offering in-depth comparative analysis of small home typologies in India.

This paper analyses the incremental housing process developed at Villa Verde, a housing project designed by the Chilean architecture firm Elemental, whose director Alejandro Aravena received the Pritzker Prize in 2016. This project is conceived within a social housing framework and designed as an affordable “half-house” to be incrementally extended by the owners.

This paper is based on research undertaken in August 2017 with data obtained through site surveys, trace analysis, interviews with 32 residents and photographic surveys. The researchers mapped the modifications made by all households at Villa Verde in the four years after occupation.

The strategy of designing a formal framework for informal additions has generally been successful with most houses undergoing substantial expansion to a high standard of construction. The paper raises concerns regarding the settlement's urban design, response to local climate and the quality of shared open space. We also find evidence of over-development as informal additions extend across front and rear yards that are in some cases fully enclosed.

This project is critiqued within the context of a long series of architectural attempts to harness the productive capacities of self-help housing. Villa Verde engages the freedom to build in a self-organised manner within a formal framework. But what will stop these additions from escalating into a “slum”?

Housing delivery systems have been classified as developmentally‐orientated or conventionally‐orientated. It has been claimed that a developmentally‐orientated approach to building procurement would encompass the parameters of community empowerment and participation in design, job creation via the development process, and economically and environmentally‐sustainable procurement (Taylor & Norval 1995). New building procurement systems display an increasing awareness of sustainability, but concentrate on economic and social sustainability, as opposed to environmental sustainability. The purpose of this paper is to document and evaluate the extent to which issues of environmental sustainability have been incorporated in the delivery of affordable housing in South Africa. The paper elaborates on a range of relevant principles for sustainable construction, which incorporate: minimisation of resource use; maximisation of reuse of resources; maximisation of use of renewable and recycled resources; use of non‐toxic materials; protection of nature; achievement of quality criteria; and promotion of labour intensive methods, skills training and capacity enhancement of local people. The authors examine the extent to which the principles of environmental sustainability have been applied, both in practice and in the formulation of South African housing policy. Finally, recommendations are made for the application of criteria for environmental sustainability in the delivery process of affordable housing in South Africa.

In India – the largest democracy and second most populated country globally – the housing research domain is relatively under-researched and under-theorized. To support and advance research in this domain, this study aims to form and organize the repository of extant academic knowledge in the subject matter of housing research in India.

This study uses a scoping review methodology and a thematic analysis method. All the articles analyzed in this study were systematically searched by following the scoping review approach proposed by Arksey and O’Malley (2005). An initial search found 365 articles and finally, 108 articles that met the inclusion criteria were analyzed using the thematic analysis method.

The data extracted from these 108 articles were analyzed using thematic analysis to arrive at four thematic areas, namely, housing policy, slum housing, housing finance and affordable housing. These thematic areas and 11 sub-themes present under them were used to present a thematic map of housing policy research in India.

This paper contributes to presenting an up-to-date literature review of the housing policy research in India.

To the best of our knowledge, this scoping review focused on housing research in India is the first of its kind. We hope that this study provides a repository of extant research on housing research in India to help current and future researchers.

This paper aims to highlight the localised shelter solutions to fulfil adequate and disaster resilient housing needs of urban informal settlers of Honiara, the capital city of Solomon Islands, in a way that is sensitive to their unique challenges, values and aspirations, is gender- and disability-inclusive, and considers housing from the complete lifecycle of a disaster (pre-, during- and post-).

Qualitative data was gathered through empirical research through five community workshops at five hotspot settlements, two stakeholder workshops and a stakeholder interview. Semi-structured questions as well as photographs of housing and settlement were used for data collection. With an emphasis on self-recovery, the identified shelter needs were then matched with the roles and responsibilities of the Government to support a process of “assisted” self-preparedness and recovery.

The output of the research was the Solomon Islands Shelter Guide. This paper draws from the Guide to present some of the findings. One of the key findings was an emphasis on shelter self-preparedness and self-recovery. However, in order for them to do that, they needed a combination of assistance – technical knowledge, materials and financial support – which is tailored to their settlement’s specific needs and based on hazard damage assessment. While the Guide provides one form of the assistance (i.e. technical), this paper is a call for action from the Solomon Islands Government and shelter responders to fulfil the rest of the community needs for shelter adequacy.

The paper contributes to existing scholarship on shelter after disasters by adding “assisted” in front of self-recovery, in line with the limited access to resources by the most vulnerable to recover, despite housing being” a human right and definition of adequate housing (UN-Habitat, 2015, 2021), which includes freedom of choice, entitlements and meeting minimum adequacy criteria.

There are many implications of this research. Since the publication of the Shelter Guide, there is excitement among most humanitarian and development agencies, government authorities and the local communities in Honiara. The Guide forms the first step in contributing to identified needs and strengthening community capacities to self-build, self-recover or self-retrofit one’s house based on their own choice of materials, design, social and economic circumstance. However, it provides one of the three elements identified as needs by the communities, as i) technical guidance, and a kit-of parts for multi-hazard safe housing, ii) financial and economic assistance and iii) a political voice or being supported and heard by the government. The research team are working with the same five urban informal communities in 2022–2023 to develop and operationalise local disaster plans (in partnership with local non-government organisations), capacity-building activities and translation of the Shelter Guide into technical posters (for local builders) and graphic novel in local pidgin language, as part of the Climate Resilient Honiara project (funded by the United Nations framework convention on climate change (UNFCCC) Adaptation fund and administered by UN-Habitat). In the longer term it would be worth evaluating the practical implications of the Guide or to examine whether the proposed socio-technical and governance guidance will find roots in the local culture.

While the Guide adhered to internationally agreed concepts of self-recovery, incremental shelter and core space, it contributes to existing scholarship on shelter after disasters by adding “assisted” in front of self-recovery, in line with housing as a human right and adequate housing (UN-Habitat, 2015, 2021), including freedom of choice, entitlements and meet minimum adequacy criteria, all of which require materials and financial assistance by the relevant in-country authorities.

The paper tries to compare the qualitative difference between professional and pragmatic design solutions in self-built houses. Self-built houses are defined here as permanently constructed houses in urban context, generally used as the primary shelter of the users belonging to middle income group, and most likely to be constructed under own informal management and own investment. The study starts with the question why pragmatic solutions seem to be more effective than professional decisions in self-built houses, even though state regulations try to engage architects in housing decisions. This study adopts ethnographic method to find the implicit reasons behind pragmatic decisions during initial as well as different stages of transformations in the houses, and suggests how professional decisions might become more effective when it is molded with the subjective values of users. It also suggests that knowing these values can be one basic way to bring architects closer to these users, and let architects play social as well as professional role in a field which has not been explored much by architectural practitioners throughout architectural history.

While a substantial amount of study of informal settlements has been undertaken, they remain largely unstudied in terms of urban form. In this analysis, the purpose of this paper is to set forth a conceptual framework, which considers the context in which informality takes place, the settlement itself, the houses contained therein, the dwellers of those houses and the process through which a settlement is designed and transformed over time.

This is a literature review.

This framework aims to be sufficiently flexible to be deployed across diverse national settings. Its formulation is important because informal settlements are a permanent fixture of the global urban landscape, and are increasing in scale.

Any sustainable strategies to improve informal settlements depend on a better understanding of their urban space, as well as of the producers of this space – the residents themselves. Finally, professional designers may be able to learn from this contemporary urban vernacular grammar – perhaps the only one left in the era of sanitized, contrived and prosaic urban design.

Using two nationally representative samples from 1988 and 1995, this study demonstrates that housing quality in urban China differs across time, housing types, and socioeconomic variables. But some key variables such as Communist Party membership, education, and the total family income are consistent predictors of housing quality across time and housing types. This study indicates that housing quality situations are very complex at the national level. The author concludes that more research into the quality of urban housing is needed, so that the outcomes of housing reform can be better assessed.

Customization is a paradox in architecture, providing necessary modernization for buildings but potentially damaging their architectural integrity. In this paper, the authors introduce the Inhabitant-Driven Customization approach for avoiding this paradox; this approach lets inhabitants design the customization from options created by architects that safeguard architectural rules. As a first implementation of the Inhabitant-Driven Customization approach, the MyChanges tool is presented. The authors assess whether the approach avoids the customization paradox by a qualitative stakeholder evaluation of the MyChanges tool and by a comparison of the Inhabitant-Driven Customization approach with existing approaches to housing customization.

MyChanges is a shape grammar-based design tool developed to enable inhabitants of the Álvaro Siza Vieira Malagueira housing complex to customize their houses in accordance with the architectural language of the complex. In this study, the authors qualitatively evaluated MyChanges with architects and other professional stakeholders. MyChanges is used in this paper to assess if the Inhabitant-Driven Customization approach avoids the paradox of customization. The initial reception of MyChanges produced diverging outcomes, suggesting that Inhabitant-Driven Customization is also unable to avoid the customization paradox. For analyzing this possibility further, this paper describes the main existing approaches to housing customization, including the Inhabitant-Driven Customization approach, formulates nine conditions for these approaches, and provides a qualitative comparative assessment of the approaches.

The customization paradox is demonstrated in the outcomes of the interviews with professional stakeholders on the MyChanges customization tool for the Malagueira housing complex. An argument is given that makes plausible that the Inhabitant-Driven Customization approach avoids the customization paradox by creating a co-design process in which inhabitants and architects alternately shape customization.

The originality of this paper lies in the introduction and discussion of the paradox of customization in housing. The paper identifies the conditions advanced in architecture for assessing housing customization approaches. Additionally, the authors propose a new customization approach and a design tool that to a large extent fulfills those conditions and avoids the customization paradox.