This study aims to assess the factors influencing homeowner behaviour regarding climate-adaptive renovations. This study extends the Theory of Planned Behaviour (TPB) by integrating additional factors such as inherent homeowner qualities (IHQs) and building attributes (BAs) to better capture climate-adaptive renovation decisions. Different configurations for the impacts of these additional factors were tested, and their correlation to homeowner attitudes (ATs) and homeowner intentions (INTs) was studied. The results indicate that attitudes related to beliefs about climate change impacts are the strongest predictors of climate-adaptive behaviour. It was also found that IHQ was a strong determinant of homeowner attitudes and had a strong indirect impact on homeowner intentions to perform climate-adaptive renovations. Given the significant role of cognitive attitudes in shaping climate-adaptive behaviours, policy interventions should focus on fostering more climate-conscious attitudes. Targeted public campaigns can highlight localised climate risks and the benefits of adaptive renovations. Sharing narratives from regions affected by severe climate events, potentially in the form of targeted workshop sessions, could make climate risks more tangible, especially for those without direct exposure, fostering greater public engagement and adaptive actions.

One-stop-shop (OSS) business models offering integrated renovation services, making renovation more affordable and feasible, are a requirement of European Union policies aiming in energy efficiency in buildings. The present paper offers an ex-ante (pre-implementation) and ex-post (post-implementation) evaluation of 37 OSS business models currently operating in the EU renovation market. The evaluation was performed using eight indicators that evaluate key factors in a business model followed by interviews with representatives of each of the examined OSSs. Findings indicate meticulous design and execution, with alignment between pre- and postimplementation evaluations, albeit with a lack of rigorous competitor analysis. While OSSs generally delivered expected value propositions, some struggled with clear communication and initial market assumptions, emphasizing the need for customer-centric strategies and adaptability to market dynamics for sustained success. The study also provides suggestions for future OSS development, which include comprehensive competitor analysis, enhanced communication strategies, and strategic partnerships to ensure long-term sustainability and success.

The construction sector is a major consumer of natural resources and asignificant contributor to environmental degradation through resource depletion,waste generation, and greenhouse gas emissions. As the industry shifts towardsustainable and circular practices, improving material traceability and resourceefficiency becomes crucial. Digital Tracking Technologies (DTT) offer a promisingsolution, yet their adoption in the precast concrete sector remains limited,necessitating an in-depth examination of influencing factors. This study exploresDTT adoption in Sweden’s precast concrete industry, addressing a criticalgap in understanding how digital technologies support Circular Economy (CE)objectives. By identifying key barriers and drivers, the research provides a holisticview of the challenges and opportunities shaping this transition. A mixedmethodsapproach was employed, integrating bibliometric analysis, social mediasentiment analysis, and stakeholder interviews. Data analysis was conducted usingVOS Viewer, Orange Data Miner, and NVivo, while findings were interpretedthrough a sociotechnical lens. The study utilizes PESTLE and SWOT analyseswithin the Multi-Level Perspective (MLP) framework to examine dynamics atthe niche, regime, and landscape levels. Findings highlight systemic barrierssuch as high investment costs, fragmented infrastructure, limited knowledge,and cultural resistance. However, opportunities exist, including enhancedoperational efficiency, improved information dissemination, CE alignment,supportive policies, and targeted incentives. Innovations like RFID tags, QR codes,and Digital Product Passports can enhance material traceability and circularity.Given regime inertia and landscape pressures, cohesive policy interventions andindustry collaboration are essential. This study provides actionable insights forindustry stakeholders, policymakers, and sustainability advocates to advancedigital innovation and sustainable construction practices.

Buildings have a significant impact on environmental sustainability and resource consumption, highlighting theurgent need for holistic and sustainable approaches within the built environment. This study employs a mixed methods approach, combining focus groups and online surveys to examine the willingness of Single-Family Housing (SFH) owners in Sweden’s Kronoberg Region to adopt space sufficiency interventions during energy renovations and using the Attitude-Behavior-Context (ABC) theoretical framework to identify the factors influencing these decisions. The interventions studied include downsizing, optimizing space use, and converting underutilized areas into smaller living units, aiming to reduce per-capita energy consumption, and decrease both operational and embodied carbon emissions.The findings reveal a low interest among SFH owners in adopting these measures, primarily due to concerns about lifestyle changes, reduced comfort, privacy, status, and property value depreciation. While personal and psychological factors affect adoption, external factors—such as regulatory policies, economic incentives, socialnorms, and technical solutions—create the broader landscape that can either facilitate or hinder the implementation of sufficiency measures. The study also highlights that homeowners with larger, child-free properties are more receptive to sufficiency interventions, suggesting that life stage significantly influences readiness for change.The study calls for a systemic approach that promotes behavioral, normative, and cultural shifts through comprehensive regulations, policies, and incentives, creating the necessary conditions for broad adoption. Tailored design proposals and support structures, such as One-Stop Shop (OSS) models, are crucial in guiding homeowners through the transition. Government involvement is essential in establishing the frameworks needed to drive sufficiency, transforming homes from static to dynamic structures that evolve with changing householdneeds. Promoting flexible design, innovative policies, and financial incentives is vital for increasing adoption,with early adopters playing a pivotal role in accelerating market acceptance.

In the face of climate change, urban governance systems must adapt to uncertainties and emerging pressures. Polycentric governance, characterized by multiple decision-making centers at different scales, enables coordination across levels and provides flexibility, which allows for experimentation and context-specific action, catalyzing institutional innovations in cities. These innovations involve creating new structures and modifying existing ones to help cities better withstand and adapt to the impacts of climate change. There are plenty of studies on this issue in developed country context, but such studies in the context of developing countries are lacking, especially in India. This article aims to explore the influence of polycentric governance on institutional innovations, thereby offering insights on how it contributes to transformative urban governance in India, characterized by (1) stewarding capacity, (2) unlocking capacity, (3) transformative capacity, and (4) orchestrating capacity. The research findings suggest that polycentric governance increases diversity and autonomy in decision-making centers across levels, which can enable more innovation or flexibility, leading to improving governance capacity to respond to changing circumstances, but these developments are still in nascent stage and further research is needed to assess the long-term sustainability of these capacities. The findings not only contribute to governance research and provide insights for policymaking, but also contribute to the broader discourse on urban resilience and sustainable development aligning with SDG 11 (sustainable cities and communities) and SDG 17 (partnerships for the goals) globally, especially in the Global South.

The increasing urbanization and influx of people into cities urge the need for sustainable living solutions, pressing on natural resources and environmental sustainability. This study explores how integrating principles of sufficiency and adaptability to varying occupant needs can enhance the adequacy and optimization of space and resource consumption. Building upon an integrative review of existing literature, it investigates these concepts' interconnectedness within the built environment, aiming to clarify adaptability's potential in facilitating space-sufficiency interventions.

A synergetic linkage of the principles of adaptability and sufficiency in buildings is needed to adapt to evolving needs and reduce environmental impacts. Such an approach stresses a user-focused strategy and views buildings as dynamic systems capable of adapting to technological changes, environment, and society. This manuscript leverages an integrative literature review to propose a conceptual framework to enhance building space utilization.

Drawing inspiration from the 5R Hierarchy, traditionally applied to waste management, it reimagines underutilized space as a form of waste, suggesting intervention steps such as rethinking, reducing, reusing, and repurposing. These steps target spatial rearrangements to tackle the complexities of space optimization.

Aligned with the "Intervention Steps," a series of Key "Intervention Parameters" are outlined to boost the effectiveness of interventions across Shearing Layers, considering the immediate and future needs of occupants. This framework provides a strategic approach to managing space and promoting environmental sustainability and occupant well-being effectively, with the potential to yield economic and social advantages in built environments. The proposed “Intervention” Framework is based on an extensive literature review, but real-world applications are needed to refine and validate this approach. Further exploration is necessary to identify regulatory and policy frameworks to facilitate and incentivize its implementation.

This study investigates the drivers and barriers to adopting Digital Tracking Technologies (DTT) for enhancing circularity in the Swedish precast concrete sector. Utilising a mixed- method design, it combines quantitative text analytics of social media posts, generating word clouds and sentiment analysis, with thematic analysis of stakeholder interviews. These interviews are analysed through a PESTLE framework, mapped to SWOT, and further examined using the Multi-Level Perspective (MLP) framework to understand transitional dynamics across the: ‘niche,’ ‘regime,’ and ‘landscape’ levels. The analysis identified 22 drivers and 24 barriers to DTT adoption, emphasising the critical role of regulatory frameworks, technological innovations, and industry practices in promoting DTT for circular economy (CE) purposes. The findings offer valuable insights for policymakers and industry stakeholders, guiding further exploration and decision-making in this field.

Climate change is inevitable, making it crucial to predict its impact on energy demands in buildings, especially for vulnerable populations like the elderly. Anticipating the energy needs for heating and cooling systems in elderly housing is vital for effective climate adaptation and mitigation strategies. This study examines how climate change affects thermal comfort of elderly in newly built elderly housing in Baerum Municipality, Norway. Urban Building Energy Modeling was used to simulate energy demand in two housing complexes under IPCC AR5 climate scenarios for 2030, 2040, 2050, and 2060. The study revealed that the RCP8.5 scenario is predicted to achieve a maximum heating energy reduction of 24% by 2060, while the RCP 2.6 scenario predicts a modest reduction of 16%. Peak cooling energy demand is forecasted to increase 53% by 2060 due to rising cooling loads, emphasizing the urgent need for infrastructure enhancements to address changes in energy demand. Understanding these shifts in energy demand is crucial for the preparedness to ensure the well-being and thermal comfort of elderly populations.

Residential energy consumption remains a significant driver of CO2 emissions in European buildings, demanding urgent action in the face of the climate crisis. While prevailing efforts have predominantly concentrated on enhancing energy efficiency and integrating renewable sources, addressing the climate urgency and resource constraints necessitates a paradigm shift towards sufficiency principles. Swedish statistics on Single-Family Houses (SFH) show that more than a third of households inhabit oversized spaces in aging buildings needing renovation. Sufficiency-oriented renovation strategies—optimizing, or reducing living areas per capita— present a promising avenue to achieve substantial energy reductions. This approach also opens the potential for space rentals, yielding combined energy and space efficiency advantages. In addition, the literature highlights reduced maintenance costs and potential urban housing crisis mitigation. However, practical implementation faces multiple obstacles.This paper investigates SFH owners' attitudes towards space-sufficiency interventions, focusing on living size preferences and identifying barriers and opportunities for sustainable housing. Through focus group sessions with SFH owners in November-December 2022, qualitative content analysis revealed that reducing living space per capita faces multifaceted challenges, despite potential benefits.These challenges encompass not only personal and psychological considerations but extend to economic, infrastructural, and policy barriers, including issues such as the potential breach of privacy, disruptions due to noise, dilemmas related to ownership and independency, disruptions to work-life dynamics, inadequate familiarity with sufficiency principles, and uncertainty imposed by space constraints. Strategic integration of sufficiency principles into energy-renovation policy alternatives necessitates a holistic approach that addresses these barriers, and some form of incentives may be needed to catalyze the adoption of sufficiency principles effectively.

Circularity in construction industry requires understanding of the complex system dynamics, which are affected by various building layers and societal systems. While the existing building stock offers opportunities to enable re-looping of construction and demolition waste, the assessment of building circularity performance is not straightforward, due to lack of standard database, methods, and tools. This may lead to subjective interpretations by practitioners who rely on lifecycle assessment (LCA) approach complemented with circularity indicators (C-indicators) to know the level of circularity (LOC) of building materials, components, and elements. Thus, these C-indicators requires careful evaluation of the current methodological approaches. The aim of this paper is to map and evaluate the nexus between assessment methodologies highlighting their strengths, limitations, and areas of improvement. In this study, a complementary approach of systematic literature review and design research concept was used to classify seven primary aspects covering 18 key performance indicators, that impact the system thinking approach of the renovation project. The critical analysis of ten distinguished C-indicators show conditional, beneficial and trade-off relationships between various indicators. At the same time, the dynamic aspect of re-looping the resources is missing in these indicators and sustainability is accounted by complementing lifecycle impacts rather than coupling them. Results of this review highlight substantial gaps in C-indicators applicability for renovation projects with emphasis to formulate a practical guidance to assess recirculation of materials throughout the value chain.