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24 pages, 3140 KiB  
Review
Social, Economic and Ecological Drivers of Tuberculosis Disparities in Bangladesh: Implications for Health Equity and Sustainable Development Policy
by Ishaan Rahman and Chris Willott
Challenges 2025, 16(3), 37; https://doi.org/10.3390/challe16030037 - 4 Aug 2025
Viewed by 330
Abstract
Tuberculosis (TB) remains a leading cause of death in Bangladesh, disproportionately affecting low socio-economic status (SES) populations. This review, guided by the WHO Social Determinants of Health framework and Rockefeller-Lancet Planetary Health Report, examined how social, economic, and ecological factors link SES to [...] Read more.
Tuberculosis (TB) remains a leading cause of death in Bangladesh, disproportionately affecting low socio-economic status (SES) populations. This review, guided by the WHO Social Determinants of Health framework and Rockefeller-Lancet Planetary Health Report, examined how social, economic, and ecological factors link SES to TB burden. The first literature search identified 28 articles focused on SES-TB relationships in Bangladesh. A second search through snowballing and conceptual mapping yielded 55 more papers of diverse source types and disciplines. Low-SES groups face elevated TB risk due to smoking, biomass fuel use, malnutrition, limited education, stigma, financial barriers, and hazardous housing or workplaces. These factors delay care-seeking, worsen outcomes, and fuel transmission, especially among women. High-SES groups more often face comorbidities like diabetes, which increase TB risk. Broader contextual drivers include urbanisation, weak labour protections, cultural norms, and poor governance. Recommendations include housing and labour reform, gender parity in education, and integrating private providers into TB programmes. These align with the WHO End TB Strategy, UN SDGs and Planetary Health Quadruple Aims, which expand the traditional Triple Aim for health system design by integrating environmental sustainability alongside improved patient outcomes, population health, and cost efficiency. Future research should explore trust in frontline workers, reasons for consulting informal carers, links between makeshift housing and TB, and integrating ecological determinants into existing frameworks. Full article
(This article belongs to the Section Human Health and Well-Being)
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18 pages, 629 KiB  
Article
Public Housing and Household Savings—A Three-Decade Repeated Cross-Sectional Analysis
by Yi Zhang, Man Tsun Wong, Yik Wa Law and Paul Siu Fai Yip
Int. J. Environ. Res. Public Health 2025, 22(8), 1182; https://doi.org/10.3390/ijerph22081182 - 28 Jul 2025
Viewed by 526
Abstract
Housing affordability is a major determinant of quality of life. Despite the relatively high GDP per capita in Hong Kong (HK) (USD 460,000), about one-third of the population lives in public rental housing (PRH) because they cannot afford private housing. Existing research estimating [...] Read more.
Housing affordability is a major determinant of quality of life. Despite the relatively high GDP per capita in Hong Kong (HK) (USD 460,000), about one-third of the population lives in public rental housing (PRH) because they cannot afford private housing. Existing research estimating the benefits of PRH or direct housing supports faces methodological limitations. Addressing this research gap, our study adopts an “in-kind subsidy” approach to estimate the monetary value of PRH, quantifying how much less PRH households might save monthly if they resided in private rental units, after controlling for confounding factors. This paper examines the association of housing types and household savings by applying ordinary least squares (OLS) regression to compare savings among PRH tenants, non-PRH tenants, and mortgage-free homeowners, based on seven rounds of the Household Expenditure Survey data (1989/1990 to 2019/2020). PRH tenants saved significantly more than private housing tenants. In terms of household savings, the value of HK PRH has steadily increased from HKD 4483 in 1999/2000, to HKD 9187 in 2019/2020. For every dollar increase in income, a household would have the propensity to save 0.7 dollars in 2019/2020. Given limited public resources, our findings offer robust evidence regarding the value of public housing. The results underscore the importance of the equitable allocation and effective management of current PRH stock to enhance the upward mobility of low- to middle-income households amid limited housing resources in HK. Full article
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15 pages, 526 KiB  
Article
Differences in Personal Recovery Among Individuals with Severe Mental Disorders in Private and Supported Accommodations: An Exploratory Study
by Alessandra Martinelli, Tecla Pozzan, Doriana Cristofalo, Chiara Bonetto, Camilla D’Astore, Elena Procura, Corrado Barbui and Mirella Ruggeri
Int. J. Environ. Res. Public Health 2025, 22(8), 1173; https://doi.org/10.3390/ijerph22081173 - 25 Jul 2025
Viewed by 247
Abstract
People with severe mental disorders (SMD) face long-term functional impairments requiring integrated, community-based, recovery-oriented care. Italy provides two main housing models for people with SMD: private accommodation (PA) and supported accommodation (SA). This exploratory study investigated differences in recovery outcomes across these settings [...] Read more.
People with severe mental disorders (SMD) face long-term functional impairments requiring integrated, community-based, recovery-oriented care. Italy provides two main housing models for people with SMD: private accommodation (PA) and supported accommodation (SA). This exploratory study investigated differences in recovery outcomes across these settings using the Mental Health Recovery Star (MHRS). A six-month longitudinal study was conducted within the South Verona Community Mental Health Service. Nineteen trained mental health professionals assessed 25 people with SMD (14 in PA, 11 in SA) at baseline (BL) and follow-up (FU) using standardized tools for recovery (MHRS), functioning, psychopathology, functional autonomy, and needs. Group comparisons and within-group changes were analyzed using paired and independent t-tests. At BL, people with SMD in PA showed better functioning (p = 0.040) and fewer needs than those in SA (p = 0.008). Recovery goals differed, with people with SMD in PA focusing on health and networks, while people with SMD in SA emphasized functioning. At FU, people with SMD in PA improved across all MHRS domains (p < 0.001), with significant reductions in symptom severity and unmet needs. People with SMD in SA showed targeted improvements in functioning, autonomy, and MHRS social networks (p < 0.001), with increases in met needs but non-significant changes in unmet needs. When comparing PA and SA at FU, the differences were relatively modest. Recovery is achievable in both housing settings, although outcomes differ. People with SMD in PA experienced broader improvements, while people with SMD in SA progressed in their prioritized areas, likely reflecting more complex initial needs. These findings underscore the value of aligning recovery-oriented care with the specific needs and contexts of different residential settings. Further research is needed to confirm and expand these results. Full article
(This article belongs to the Section Behavioral and Mental Health)
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32 pages, 6710 KiB  
Article
Designing Beyond Walls: An Exploration of How Architecture Can Contribute to Semi-Independent Living for Autistic Adults
by Amber Holly Abolins Haussmann and Crystal Victoria Olin
Architecture 2025, 5(3), 48; https://doi.org/10.3390/architecture5030048 - 7 Jul 2025
Viewed by 526
Abstract
High unemployment rates, inaccessible housing markets, and funding challenges create barriers to finding suitable housing for adults with Autism Spectrum Disorder (ASD) who have less obvious support needs, also known as autistic adults. While public and community housing services in Aotearoa New Zealand [...] Read more.
High unemployment rates, inaccessible housing markets, and funding challenges create barriers to finding suitable housing for adults with Autism Spectrum Disorder (ASD) who have less obvious support needs, also known as autistic adults. While public and community housing services in Aotearoa New Zealand (AoNZ) may be an option, a lack of accessible designs leaves families uncertain about future care options. This paper, part of the MBIE-funded Public Housing and Urban Regeneration: Maximising Wellbeing research programme in partnership with registered Community Housing Provider, Te Toi Mahana (TTM), takes an exploratory approach to ask how public and community housing can support and help enable semi-independent living for autistic adults. It investigates how design elements—such as dwelling layouts, material choices, colour schemes, lighting, acoustics, shared and community spaces, and external environments—impact the wellbeing of autistic adults. By extension, insights may also inform private housing design. The study focuses on autistic adults who may be considered ‘mid-to-high’ functioning or those who have been previously diagnosed with Asperger’s Syndrome, whose housing needs are often overlooked. It develops guiding principles and detailed guidance points for public and community housing, informed by the literature, case studies, and data from a photo elicitation study and interviews undertaken with autistic adults in AoNZ. These guiding principles are tested through the speculative redesign of a large TTM site in Newtown, Wellington, AoNZ. Findings should be of interest to government agencies, housing providers, architects, stakeholders, and others involved in shaping the built environment, as well as autistic adults and their supporters, both in AoNZ and internationally. Full article
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20 pages, 635 KiB  
Article
Identifying School Travel Mode Choice Patterns in Mersin, Türkiye
by Murat Ozen, Fikret Zorlu and Nihat Can Karabulut
Sustainability 2025, 17(13), 6142; https://doi.org/10.3390/su17136142 - 4 Jul 2025
Viewed by 511
Abstract
This study investigates the factors affecting the choice of school travel mode among students in Mersin, Türkiye, focusing on walking, private car, public transit and school bus. A two-step modeling approach was adopted. First, a latent class cluster analysis (LCCA) was applied to [...] Read more.
This study investigates the factors affecting the choice of school travel mode among students in Mersin, Türkiye, focusing on walking, private car, public transit and school bus. A two-step modeling approach was adopted. First, a latent class cluster analysis (LCCA) was applied to identify subgroups of students with similar characteristics. Then, separate multinomial logit (MNL) models were estimated for each cluster. The data come from the 2022 Urban Transport Master Plan household survey and include 2798 students from 2092 households. The results show that trip distance is the most consistent and significant factor across all clusters, as increasing distance makes students more likely to use motorized modes instead of walking. Gender also demonstrates a consistent influence in specific clusters, where male students are less likely to travel by private car. Similarly, residing in a single-family house consistently increases the likelihood of car use in multiple clusters. Conversely, the influence of household structure, parental education, income, and household size differs significantly between clusters, underlining the importance of considering group-level differences in school travel behavior. These findings suggest that policies aiming to promote sustainable school travel should be sensitive to the needs of different student groups. Integrating land use and transportation planning may help to support active and shared modes of travel. Full article
(This article belongs to the Section Sustainable Transportation)
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19 pages, 868 KiB  
Article
Improving Access to Radiotherapy in Gauteng: A Framework for Equitable Cancer Care
by Portia N. Ramashia, Pauline B. Nkosi and Thokozani P. Mbonane
Int. J. Environ. Res. Public Health 2025, 22(7), 1071; https://doi.org/10.3390/ijerph22071071 - 3 Jul 2025
Viewed by 320
Abstract
Radiotherapy, a critical component of cancer treatment, faces significant challenges in Gauteng, South Africa. These disparities hinder the achievement of Sustainable Development Goal 3, primarily due to systemic issues, socioeconomic barriers, and limitations within the health system. This article presents the House framework, [...] Read more.
Radiotherapy, a critical component of cancer treatment, faces significant challenges in Gauteng, South Africa. These disparities hinder the achievement of Sustainable Development Goal 3, primarily due to systemic issues, socioeconomic barriers, and limitations within the health system. This article presents the House framework, designed to enhance access to radiotherapy services by integrating the WHO Health Systems framework with the dimensions of access proposed by Penchansky and Thomas. The framework is visually represented as a house, with Policy & Governance as the foundation, WHO building blocks as pillars, and Equitable Cancer Care and Improved Outcomes as the roof. A mixed-methods approach was utilized, combining quantitative data from radiotherapy facilities and qualitative insights from healthcare professionals to identify barriers and potential solutions. Findings indicate significant disparities in resource distribution and accessibility between public and private institutions, compounded by socioeconomic factors like transport costs and lack of awareness. The article discusses innovative proposed framework using the 5As of access as potential solutions. The House framework serves as a valuable tool for policymakers and healthcare providers aiming to improve radiotherapy access and promote equitable cancer care in Gauteng, ultimately working towards reducing disparities in cancer outcomes. Full article
(This article belongs to the Special Issue Advancing Health Equity—Addressing Cancer Disparities)
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17 pages, 2518 KiB  
Article
A Methodological Framework for Studying the Tilt Angle of Solar Photovoltaic Panels
by Vitālijs Osadčuks, Dainis Berjoza, Jānis Lāceklis-Bertmanis and Ināra Jurgena
Energies 2025, 18(13), 3487; https://doi.org/10.3390/en18133487 - 2 Jul 2025
Viewed by 484
Abstract
With the development of alternative energy technologies, energy production from renewable sources is gaining wide application. One of the types of renewable energy sources is solar power. In the past 5 years, solar cells have become very popular for both private electricity microgeneration [...] Read more.
With the development of alternative energy technologies, energy production from renewable sources is gaining wide application. One of the types of renewable energy sources is solar power. In the past 5 years, solar cells have become very popular for both private electricity microgeneration and large power plants. There are two main options for installing solar photovoltaic panels: on the roof of a house or the ground; on specially made frames. When installing solar cells on the roof, it is not always possible to choose a tilt angle that is appropriate for all seasons, since the angle is mainly adjusted to the plane of the roof. When installing solar cells on the ground, it is usually possible to choose both the orientation relative to the cardinal points and the tilt angle relative to the ground. There are various theories about the best tilt angle of solar cells for producing the most amount of energy during the year. Therefore, the aim of the present research study is to develop an original research methodology for determining an optimal tilt angle for solar cells. The research study examined six different tilt angles of solar cells, 0°, 30°, 35° 40° 45° and 50°, orienting the cells towards the south. The research study used 18 identical monocrystalline solar panels with a power of 20 W. Three solar panels were set at each angle. This way, the experiment had three replications at each angle of the solar cells. The measurements were recorded by a GWL840 data logger with an interval of 10 s. The experiment was conducted by placing all solar cell modules on the roof of the building at Lat. 56.66181° and Long. 23.75238°. During the experimental period, the highest efficiency was found for the solar panels set at 50° and 40°, reaching the total solar irradiation of 266.61 Wm−2 and 266.27 Wm−2, respectively. Full article
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28 pages, 30320 KiB  
Article
Assessing Accessibility and Equity in Childcare Facilities Through 2SFCA: Insights from Housing Types in Seongbuk-gu, Seoul
by Sunju Kang and Gunwon Lee
ISPRS Int. J. Geo-Inf. 2025, 14(7), 247; https://doi.org/10.3390/ijgi14070247 - 26 Jun 2025
Viewed by 427
Abstract
The creation of child-friendly communities has become a key goal in sustainable global development. However, South Korea continues to experience a shortage of childcare facilities, resulting in gaps in the public care system and a growing reliance on private educational resources. Ensuring spatial [...] Read more.
The creation of child-friendly communities has become a key goal in sustainable global development. However, South Korea continues to experience a shortage of childcare facilities, resulting in gaps in the public care system and a growing reliance on private educational resources. Ensuring spatial spaces and implementing rational planning for children’s spaces have become critical tasks in building child-friendly cities. This study analyzed the accessibility of childcare facilities by housing type in Seongbuk-gu, Seoul, using the two-step floating catchment area (2SFCA) method, focusing on children residing in the district. It also evaluated whether these facilities were spatially and equally distributed. The findings are as follows. First, the overall accessibility to childcare facilities in Seongbuk-gu is limited, with significant disparities in accessibility depending on housing type. Second, the spatial equity assessment revealed high inequality indices for most facilities, particularly for those in apartment areas, which showed relatively higher levels of inequality. In conclusion, childcare facilities in Seongbuk-gu require substantial improvements in terms of both accessibility and equity. This study provides a policy framework for creating child-friendly communities and promoting equal access to care services for children by analyzing the spatial accessibility and equity of childcare facilities. Full article
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21 pages, 20435 KiB  
Article
Examining the Hashim Chalbi House’s Spatial Aspects in Erbil Citadel: Understanding the Museum’s Configuration Potential via Depthmap Analysis
by Wafaa Anwar Sulaiman Goriel, Tamás Molnár and Erzsébet Szeréna Zoltán
Buildings 2025, 15(12), 2134; https://doi.org/10.3390/buildings15122134 - 19 Jun 2025
Viewed by 478
Abstract
The Hashim Chalbi house, a historic private residence with notable architectural features located within Erbil Citadel—a UNESCO World Heritage site since 2014—was turned into a museum. This study utilizes space syntax analysis (depth maps) to explore the spatial configuration of the Hashim Chalbi [...] Read more.
The Hashim Chalbi house, a historic private residence with notable architectural features located within Erbil Citadel—a UNESCO World Heritage site since 2014—was turned into a museum. This study utilizes space syntax analysis (depth maps) to explore the spatial configuration of the Hashim Chalbi house, aiming to evaluate its potential and provide guidance for conservation strategies that maintain its architectural and cultural integrity as a museum. Space syntax offers both a theoretical and analytical tool to map and interpret the spatial formation of heritage buildings. A commonly recognized limitation has been the lack of broader-scale spatial analyses of houses that can shed light on social and cultural interaction. This approach aims to provide a better analysis to inform conservation and restoration. Full article
(This article belongs to the Section Building Materials, and Repair & Renovation)
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18 pages, 441 KiB  
Article
Rescaling and Transforming: “Umbrella Agreements,” Planning Deals, and the Israeli Planning Regime
by Sharon Eshel, Oren Yiftachel and Talia Margalit
Land 2025, 14(6), 1295; https://doi.org/10.3390/land14061295 - 17 Jun 2025
Viewed by 675
Abstract
This paper analyzes “Umbrella Agreements,” a policy tool implemented by the Israeli government across 32 municipalities over the past decade. Introduced in response to a deepening housing crisis, these agreements offered funding for local infrastructure in exchange for municipal consent to large-scale residential [...] Read more.
This paper analyzes “Umbrella Agreements,” a policy tool implemented by the Israeli government across 32 municipalities over the past decade. Introduced in response to a deepening housing crisis, these agreements offered funding for local infrastructure in exchange for municipal consent to large-scale residential development on (mostly) state- managed land. We argue that umbrella agreements rescale the neoliberal mechanism of “planning deals” from the urban to the state (national) scale, expanding their logic to new contexts, and fundamentally transforming the Israeli planning regime. While prevailing theories of neoliberalism emphasize decentralization and privatization through “free market” mechanisms, the Israeli process is characterized by strong state control over land and a concentration of planning powers at the national level as a pre-condition for private housing development. Our analysis yields three main findings. First, upscaling planning deals erodes the state’s regulatory powers while increasing its interest as a direct beneficiary of the capitalist order. Second, these agreements subject market logic to greater political control. Third, this transformation has seriously undermined the democratic and professional characters of the planning system, leading to regressive social consequences. Full article
(This article belongs to the Section Land Socio-Economic and Political Issues)
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22 pages, 3298 KiB  
Article
Recent Trend and Outlook of Tourist Accommodations in Spain at Various Scales: The Challenges of Touristification in Andalusian Municipalities
by Jesús Ventura-Fernández, Llorenç Quetglas-Llull and Antonio Gavira-Narváez
Tour. Hosp. 2025, 6(2), 114; https://doi.org/10.3390/tourhosp6020114 - 16 Jun 2025
Viewed by 1002
Abstract
As a globe leader in tourism, Spain relies on this sector as a key economic pillar, contributing over 12% to its GDP. The hospitality industry has expanded steadily in response to growing demand. In parallel, recent years have witnessed an exponential rise in [...] Read more.
As a globe leader in tourism, Spain relies on this sector as a key economic pillar, contributing over 12% to its GDP. The hospitality industry has expanded steadily in response to growing demand. In parallel, recent years have witnessed an exponential rise in tourist accommodations, such as privately owned properties repurposed for short-term rentals, largely facilitated by digital platforms. This study explores the evolution and spatial distribution of these accommodations, assessing their share within the overall housing stock across different scales. The focus is on Andalusian municipalities, a region characterized by both its geographical diversity and its significant tourism footprint. This study highlights two primary areas of concentration: the region’s Atlantic and Mediterranean coastlines (most notably the Costa del Sol, centered in Malaga) and internationally renowned heritage cities such as Seville, Granada, and Cordoba. By applying quantitative methods, this research assesses the clustering of tourist accommodations in relation to major cultural landmarks, including several UNESCO World Heritage Sites. The findings provide an analysis of the implications of this trend, shedding light on the challenges and opportunities it presents within the tourism sector, particularly against the backdrop of mounting criticism surrounding the sustainability and socio-economic impacts of this evolving model of tourism. Full article
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28 pages, 395 KiB  
Article
Resident Satisfaction in Eco-Friendly Housing: Informing Sustainable Decision-Making in Urban Development
by Dan Wang, Yunbo Zhang, Radzi Ismail, Mohd Wira Mohd Shafiei and Terh Jing Khoo
Buildings 2025, 15(12), 1966; https://doi.org/10.3390/buildings15121966 - 6 Jun 2025
Viewed by 551
Abstract
The study examines how design quality, indoor air quality, and energy efficiency affect customer satisfaction in eco-friendly houses in Shanghai, China. Further, it examines how environmental awareness mediates community participation and resident satisfaction. A stratified sampling technique is used to collect the data [...] Read more.
The study examines how design quality, indoor air quality, and energy efficiency affect customer satisfaction in eco-friendly houses in Shanghai, China. Further, it examines how environmental awareness mediates community participation and resident satisfaction. A stratified sampling technique is used to collect the data from 742 eligible respondents in public and private eco-residential complexes. The results show that design, air quality, and energy efficiency improve customer satisfaction. At the same time, community engagement partially mediates these correlations, stressing the importance of social cohesion in enhancing residential area quality. Environmental awareness moderated the effects and boosted the happiness benefits of energy efficiency and indoor air quality. This research uses a comprehensive framework that includes psychological, environmental, and social components to make it stand out. Instead of studying green housing benefits in general, it accomplishes this inside China’s urban sustainability program. The results help policymakers, urban planners, and housing authorities make megacity green housing more desirable and livable. Full article
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21 pages, 1498 KiB  
Article
The Effectiveness of Behavioural Interventions on Residential Location Choices and Commute Behaviours: Experimental Evidence from China
by Yangfanqi Liu, Helen X. H. Bao and Jie Liu
Land 2025, 14(6), 1165; https://doi.org/10.3390/land14061165 - 28 May 2025
Viewed by 388
Abstract
This study used randomised controlled trials to test the effectiveness of three behavioural interventions, i.e., focalism, social norm, and visualisation, in changing people’s housing and commuting preferences. The experiment was conducted online via Credamo, one of the largest online panel data providers in [...] Read more.
This study used randomised controlled trials to test the effectiveness of three behavioural interventions, i.e., focalism, social norm, and visualisation, in changing people’s housing and commuting preferences. The experiment was conducted online via Credamo, one of the largest online panel data providers in China. It included only renters who needed to commute in the city of Xi’an, China, as participants in the study. The results show that behavioural interventions significantly increased respondents’ willingness to adopt more sustainable commute modes, such as walking or cycling, and reduced the tendency to use private cars. Among the three behavioural interventions, the social norm intervention had the largest and most significant impact. The findings shed light on the potential of applying behavioural interventions in sustainable urban transport management. More importantly, the results demonstrate the possibility of using behavioural interventions to incorporate sustainable urban development goals into housing decisions. Full article
(This article belongs to the Section Land Planning and Landscape Architecture)
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35 pages, 1788 KiB  
Article
Space Personalization as a Catalyst for Sustainable Aging in Place: Enhancing Elderly Autonomy Through Culturally Adaptive Housing in Jordan
by Majd Al-Homoud
Sustainability 2025, 17(10), 4693; https://doi.org/10.3390/su17104693 - 20 May 2025
Cited by 1 | Viewed by 662
Abstract
In Jordan, where aging at home reflects Islamic cultural values, elderly populations face housing environments that fail to meet their needs, challenging sustainable aging-in-place objectives. This study explores how space personalization enhances autonomy and control among Jordan’s elderly using a mixed-methods approach combining [...] Read more.
In Jordan, where aging at home reflects Islamic cultural values, elderly populations face housing environments that fail to meet their needs, challenging sustainable aging-in-place objectives. This study explores how space personalization enhances autonomy and control among Jordan’s elderly using a mixed-methods approach combining surveys and interviews across multiple governorates. Findings reveal that space personalization strengthens elders’ sense of control over daily activities and household decisions, with private room allocation emerging as particularly significant. While conflicts between generations present barriers to control, cherished objects, such as heirlooms and religious artifacts, play a vital role in maintaining emotional connections and territorial identity. The study highlights the need for culturally sensitive housing modifications that respect cultural traditions while addressing practical needs, recommending community-based care programs and intergenerational dialogue initiatives. These insights contribute to sustainable urban development strategies that support dignified aging while preserving socio-cultural heritage, offering lessons for similar communities facing rapid demographic transitions. Full article
(This article belongs to the Special Issue Analysis on Real-Estate Marketing and Sustainable Civil Engineering)
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19 pages, 8169 KiB  
Article
Reimagining Kyokai: Layered Permeability in Yoshiji Takehara’s Modern Residences
by Luyang Li, Yan Chen and Houjun Li
Buildings 2025, 15(10), 1591; https://doi.org/10.3390/buildings15101591 - 8 May 2025
Viewed by 585
Abstract
Traditional Japanese architecture is known for its open, ambiguous spatial boundaries (“kyokai”), which integrate nature and dwelling through Zen/Shinto philosophies. Yet modern urban housing, driven by high-density minimalism, flattens spatial hierarchies and erodes these rich boundary concepts. This study aims to explore how [...] Read more.
Traditional Japanese architecture is known for its open, ambiguous spatial boundaries (“kyokai”), which integrate nature and dwelling through Zen/Shinto philosophies. Yet modern urban housing, driven by high-density minimalism, flattens spatial hierarchies and erodes these rich boundary concepts. This study aims to explore how Japanese architect Yoshiji Takehara reinterprets traditional spatial principles to reconstruct the interior–exterior relationships in modern housing through a mixed-methods approach—including a literature review, case studies, and semi-structured interviews—verifying the hypothesis that he achieves the modern translation of traditional “kyokai” through strategies of boundary expansion and ambiguity. Analyzing 78 independent residential projects by Takehara and incorporating his interview texts, the research employs spatial typology and statistical methods to quantify the characteristics of boundary configurations, such as building contour morphology, opening orientations, and transitional space types, to reveal the internal logic of his design strategies. This study identifies two core strategies through which Takehara redefines spatial boundaries: firstly, clustered building layouts, multi-directional openings, and visual connections between courtyards and private functional spaces extend interface areas, enhancing interactions between nature and daily life; secondly, in-between spaces like corridors and doma (earthen-floored transitional zones), double-layered fixtures, and floor-level variations blur physical and psychological boundaries, creating multilayered permeability. Case studies demonstrate that his designs not only inherit traditional elements such as indented plans and semi-outdoor buffers but also revitalize the essence of “dwelling” through contemporary expressions, achieving dynamic visual experiences and poetic inhabitation within limited sites via complex boundary configurations and fluid thresholds. This research provides reusable boundary design strategies for high-density urban housing, such as multi-directional openings and buffer space typologies, and fills a research gap in the systematic translation of traditional “kyokai” theory into modern architecture, offering new insights for reconstructing the natural connection in residential spaces. Full article
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