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As public–private partnerships (PPPs) have become preferred and veritable approach to deliver affordable housing, the seemingly lack of understanding of the significant factors that impact on success has become a notable setback. This study aims to delineate significant factors that can support decisions in affordable PPP public housing delivery.

Largely, a questionnaire survey was adopted to elicit insights from practitioners, policymakers and experts to develop an evaluative decision support model using an analytical hierarchy process and multi-attribute utility technique approach. Further, an expert illustration was conducted to evaluate and validate the results on the housing typologies.

The results revealed that energy efficiency and low-cost green building materials scored the highest weighting of all the criteria. Furthermore, multi-storey self-contained flats were found to be the most preferred housing typology and were significantly influenced by these factors. From the model evaluation, the scores on the factors of sustainability, affordability, cultural values and accountability were consistent across all typologies of housing whereas that of benchmarking, governance and transparency were varied.

The decision support factors captured varied dimensions of key factors that impact on affordable PPP housing that have not been considered in an integrated manner. These findings offer objective and systematic support to decision-making in affordable PPP housing delivery.

The concept of adaptive reuse is an effective strategy in enhancing the heritage assets economic, cultural and social values. The main purpose of this research is to determine how to increase the life of the heritage buildings thereby improving their sustainability and reducing energy consumption and waste, while preserving them from the risk of obsolescence.

The qualitative method has been used in this research to evaluate the functional quality and sustainability of Mashrooteh house by using the adaptSTAR model with its scoring sheet with respective design criteria. Predicting and evaluating the sustainability and adaptability of the historic Mashrooteh house in Tabriz will ensure its reuse and increase its adaptability and future life.

Findings have shown that to increase the adaptability and future life of Mashrooteh house, it requires the improvement of the physical, legal, technological and functional criteria in order to provide suitable conditions for increasing the environmental and functional sustainability of this heritage building, while improving the quality of its spaces.

With the emphasis on conservation of national heritage as well as promoting sustainable development, the overall service life of these structures can be extended. The significance of this study lies in recognizing the incompatibilities and potential of viable approaches to rehabilitate the volatile condition of Mashrooteh house. The result of this study will add value to existing sustainable reuse database in Tabriz and other countries in the Middle East region.

The main objective of this paper is to critically assess sustainable development in the context of Behramkale, a vernacular village in Türkiye.

Vernacular Heritage Sustainable Architecture analysis framework has been adopted to understand and assess vernacular architecture and sustainable development in Behramkale.

The vernacular design of the old Behramkale settlement has shown more sustainable characteristics as compared to the new development area. Key findings show that trade-offs were made with respect to environmental and sociocultural aspects of sustainable development to achieve economic sustainability.

Future research with more in-depth interviews would be helpful to find out the inhabitants’ response to the conservation practices.

Based on the research conducted, life cycle analysis and sustainable strategies of vernacular settlements can be useful tools to design, develop and improve old settlements, as well as newly established settlements.

Key lessons learned from conservation practices can help to identify well-adapted solutions to respond to the needs of local communities in Türkiye and similar vernacular settlements in the Mediterranean region.

This paper critically assesses sustainable development in the context of vernacular architecture, heritage conservation and rural sustainability. Conservation practices in Türkiye are evaluated deeply as there is limited research in this field within the Mediterranean heritage conversation and sustainable development context.

This paper aims to identify key performance indicators (KPIs), and their corresponding attributes, required to successfully manage asset management sustainably in a built environment context. Improving the sustainability of existing housing stock is a major challenge facing the UK social housing sector. There is a lack of support to navigate the growing and often incongruent information relating to sustainable development and how to operationalise it. The problem is twofold; first, the current (single criterion) condition-based approach to maintenance planning constrains asset managers and does not fully address the social, environmental and economic aspects of sustainability. Second, the toolkits available for assessing the sustainability of housing are often generic and are time consuming and expensive to implement.

This paper reports the findings of a participatory research project with a leading London-based housing association, using a series of landlord and tenant workshops to derive a set of attributes associated with KPIs to fully reflect the local requirements of the landlord and their interpretation of the sustainability agenda. Five KPIs are considered to be measurable, directly affected by maintenance work and independent of each other were identified by this landlord (comfort, running costs, adaptability, maintenance costs and community).

The resulting outputs, in a policy context, will provide a clear route map to social housing landlords of how to improve the sustainability of their housing stock with the additional benefits of addressing fuel poverty and carbon emission targets, whilst at the same time, help create and maintain housing in which people want to live.

The proposed approach is flexible enough to incorporate the individual requirements of landlords and be able to adapt to changes in government policy (local and central) in a timely, robust, transparent and inclusive format.

Housing provision and the neighbourhood's safety are significant social sustainability concerns. If structural issues are not well checked, housing provision and the neighbourhood's safety may become threatened, especially in Lagos State, Nigeria. Thus, this study aims to investigate the perceived root cause of collapsed buildings at the construction stage using two case studies, its effect on social sustainability aspects and suggested measures to mitigate future happening and enhance achieving social sustainability aspects goals.

The researchers collected data from Nigeria's built environment experts and eyewitnesses/employees of selected cases of collapsed buildings. The study adopted a phenomenology type of qualitative research design and analysed collated data via thematic analysis and achieved saturation. The analysed data created three themes.

Results reveal that inadequate heavy equipment and personnel incapacitated relevant government agencies are responsible for handling emergency and rescue during building projects collapse. Preliminary findings show developers' greed and systematic failures as the root cause of Nigeria's building project collapse (BPC). It categorised the root causes into three groups (developer's related-cause, design team related-cause and government entities related-cause). The study suggested measures to mitigate future happening. The emerged measures were grouped into a penalty, regulatory, byelaw act, technical and safety measures.

This study contributes to curbing the threat to social sustainability of housing provision in cities. It reveals the underlying perceived root cause of collapsed buildings in Nigeria's building industry. Also, it suggested feasible measures to mitigate BPC. These measures may be modified and adopted by other developing countries facing similar challenges.

The paper aims to present the core part of the research work done within the FP7 OPEN HOUSE project, aiming to merge existing methodologies for sustainability assessment of buildings towards a common view, applicable as an open access assessment method across European Union (EU). One of the principle tasks was to evaluate the applicability of proposed indicators in EU countries with different legal frameworks, climate conditions, status and condition of the building stock and construction tradition.

To reach the goal, it had to be established first whether the pre-selected indicators suit the purpose in countries different from each other regarding various influential factors. A questionnaire survey based on close-ended quantitative thematic questions was performed to evaluate the acceptability and relevance of each indicator in national contexts, thus defining the path for the final protocol of selection criteria for the OPEN HOUSE method.

The responses enabled and justified necessary minor corrections and regrouping to define the full (56 indicators) and core (30 indicators) indicator sets, demonstrating that the system is applicable in EU countries. This task made ground for finalisation of the OPEN HOUSE method: definition of evaluation procedures and sustainability performance levels and testing of the approach on demo cases.

This paper shows how the research team tackled the problem of limited use of building sustainability assessment methods due to specific boundary conditions by determining a widely applicable set of categories and related indicators based upon an extensive analysis of existing assessment methods, standardisation development, formal guidelines and strategic (inter)national frameworks.

Sparse attention has been paid to the inevitable processes of change that enable progress in today's globalizing urban centres, but also threaten their unique identity, historic memory, and cultural heritage. The aims of this work are to understand the urban dynamics that trigger these change processes, uncover their effects, and discuss how these changes can be utilized to achieve sustainable development. The case study, which uses a comparative mixed method strategy consisting of archival research, fieldwork, and semi-structured interviews, is the Kosuyolu Housing Settlement, a project dating to the 1950s that represents one of Istanbul's best examples of urban development and housing culture. Displaying the architectural and urban planning ideals of the Modern period, this settlement is a concrete example that reflects the period's considerations regarding social housing. Through this case, change in housing has been evaluated in terms of sustainability indicators. The derived evidences show the significant role of governance and the maintained land use pattern for the achievement of the sustainable development and these evidences are used to suggest the development of an adaption guide that will assist in sustainable development in the short term, and the creation of alternative scenarios that are flexible and easy to adapt, active, and based on participatory processes for the long term.

The purpose of this paper is to explore the people’s perceptions of sustainable housing in Saudi Arabia using Riyadh as a case study. Riyadh was chosen as a case study for two reasons: it is the capital city of Saudi Arabia and the largest city in the country; and there are no major differences between the characteristics of people in Riyadh and other major Saudi cities.

The questionnaire survey technique was used in this study to achieve the main purpose. The study used descriptive statistics (frequency, percentage) with the aid of the Statistical Package of Social Science Software (SPSS) to analyze the data.

The findings reveal that there is a lack of people’s awareness about the sustainable housing. However, it shows a positive response regarding people’s willingness to live in sustainable housing in the future as well as to adjust their current houses to be more environmentally friendly houses.

The thoughts of stakeholders who are involved in the housing field, including policymakers and real estate developers, are very significant, however, due to the time limitation it has not been explored in this study. Therefore, future research is recommended to investigate the opinions of different stakeholders to have better insights for delivering sustainable housing.

The study contributes to exploring the people’s perceptions of sustainable housing in Saudi Arabia using Riyadh as a case study. Only a few studies have discussed this issue, so this study was conducted to bridge this research gap and build upon the literature.

A large portion of first-time homebuyers lack adequate means to meet their needs of housing owing to home price inflation in Malaysian cities. One way to address the housing needs of urban household is to provide affordable quality homes. Drawing upon a case study of Greater Kuala Lumpur, Malaysia, this study attempts to discuss the cloud of issues related to different homeownership schemes available for first-time homebuyers. Results suggest that affordable housing should be made available at the price and locations that can be accepted by first-time homeowners. In line with the principle of sustainability, homeownership schemes for first-time homebuyers should be economically viable, socially acceptable and technically feasible.

Investors are looking for the organizations which have robust strategy and planning method meeting the current and future guidelines and policies on environmental regulations to improve sustainability. Thus, most of the business units have been striving to incorporate sustainability into process and product or service design in such a way that carbon footprint should be minimized. Sustainable product and service design remain a challenge for industrial organizations because of the involvement of multifaceted factors in the design endeavor. The purpose of this paper is to develop a methodology to include sustainability functions at the design phase of the product or process.

The authors have modified the house of quality concept, and grey relational analysis-house of sustainability process is proposed in this paper, which includes consideration of all sustainability dimensions including environmental at the design phase of the product or process development. The process has been explained with an example of retail service design.

The proposed approach incorporates the specific business environment and the type of product to be designed with all three levels of sustainability by design. By capturing all sustainability dimensions in the design stage itself, various issues may be taken care of at the initial stage of operations, which are likely to affect sustainability in all activities of the supply chain and the organization as a whole. Thus the proactive sustainable designing considerably eases and improves the sustainability reporting and meeting the legislative guidelines prescribed by the governmental agencies of the country.

A novel methodology has been proposed to include sustainability functions at the design phase, which is strategically useful for sustainable operations and to develop a sustainable product or process.