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This article analyzes the legal status of golf course development, specifically Gunung Geulis Country Club (GGCC) in the Puncak-Bogor Area within Indonesia's spatial planning policy and Green Open Space (RTH) protection framework, while evaluating its ecological impacts from an environmental justice perspective. Employing a normative juridical method with statutory, conceptual, and case-based approaches, this research identifies two core issues. First, golf course development occupies a legal grey area: it is recognized as private RTH under Article 29(2) of Law No. 26 of 2007 on Spatial Planning, yet substantively fails to fulfill the ecological functions mandated by law due to its exclusivity and inaccessibility to the public. Second, from an environmental justice perspective, GGCC's development generates layered distributive, procedural, and corrective injustices: surrounding communities bear the burden of groundwater contamination, reduced spring discharge, increased surface runoff, and flood risk, while economic and recreational benefits are concentrated among a small number of high-fee members. Weak AMDAL instruments, minimal public participation, and inconsistent spatial monitoring in the Puncak-Bogor protected area exacerbate these conditions. This article recommends policy reforms including stricter private RTH definitions, strengthened participatory AMDAL processes, and consistent application of the polluter-pays principle.

The increase in the number of elderly residents demands the provision of residential facilities that not only meet physical needs, but also support the psychological and social well-being of their users. This study aims to formulate the concept of behavioral architecture-based nursing home design by focusing on the relationship between elderly activity patterns, privacy levels, and spatial relationships of space in the local context of Indonesia. This study uses a qualitative-descriptive approach in the framework of architectural design, with data collection through observation of elderly activities, site analysis, and documentation studies. Activity data was analyzed to identify space needs and usage patterns, then synthesized with site characteristics to formulate the concepts of zoning, circulation, and behavior-based spatial relationships. The results of the study show that the activities of the elderly form a layered behavioral structure, including residential and health activities as primary needs as well as social, productive, and educational activities as support for psychosocial welfare. Hierarchically arranged space zoning based on privacy levels has been proven to improve the readability of the space, sense of security, and comfort of the elderly. The integration of green open spaces as part of the activity system also strengthens support for light physical activity and social interaction. This study confirms that the application of behavioral architecture allows the translation of data on elderly behavior and site conditions into a contextual, humanist, and quality-of-life-oriented design concept. These findings provide practical implications for designers and policymakers in the development of sustainable elderly housing.

The Taman Candi is included in the category of active green open space (GOS). Based on this, it is necessary to carry out good maintenance aimed at maintaining the quality of facilities, both softscape and hardscape in the park. Maintenance in Taman Candi Ngawi Regency refers to the park maintenance standards by Arifin and Arifin (2005). Data processing was carried out using a quantitative method, namely using a work capacity calculation formula, aimed at measuring the suitability of work and worker effectiveness from the maintenance of the Taman Candi Ngawi Regency. The management of the Taman Candi in Ngawi Regency does not have a written maintenance schedule, so maintenance activities are carried out flexibly or according to the conditions in the field, and there are several activities that have not been carried out, the results show that there is still work that is not ideal from the work capacity and exceeds the ideal value in accordance with the standard of maintenance work capacity of Arifin and Arifin (2005). This is due to the lack of knowledge of workers about good and correct maintenance activities, the absence of a written schedule from the manager, and the lack of availability of tools.

This study formulates a design concept for the Beach Tourism Resort Area in Botubarani Village by applying tropical architecture that responds to coastal climatic conditions while enhancing the quality of visitor experiences. The research integrates principles of thermal comfort, environmental sustainability, and the ecological potential of coastal environments as the basis for creating climate-adaptive and environmentally responsive tourism areas. The methodology includes site analysis, field observation, climatological assessment, and a literature review related to tropical architecture and coastal tourism design. The collected data were used to determine building orientation, mass layout patterns, visitor capacity, materials, vegetation, and utility systems appropriate for humid tropical climates. The findings show that the site’s position between the sea and the mountains, combined with full-day sun exposure, requires design strategies that maximize cross-ventilation, utilize sloped roofs, provide natural shading, and apply local materials such as wood, bamboo, and red brick. The large spatial needs based on visitor capacity projections are accommodated through a flexible cluster layout that supports visual and functional connectivity between buildings while incorporating green open spaces to enhance microclimate comfort. The utility system is designed using sustainability principles through greywater–blackwater separation, infiltration wells, and recycling-based waste management. This study confirms that the application of tropical architecture in coastal tourism areas can improve thermal comfort, energy efficiency, and environmental sustainability. These findings guide developing tropical tourism area designs that are more adaptive to climate change and more responsive to visitor needs.

Green Open Space (GOS) is an essential element in urban spatial planning that functions to maintain air quality and ecosystem balance. This research aims to analyze the influence of GOS on the concentration levels of Carbon Dioxide (CO2​) in the urban area of Jayapura City. The study locations were focused on two areas with distinct characteristics: Jalan Sam Ratulangi, which has high vegetation coverage, and Jalan Percetakan, which is dominated by built-up areas and dense commercial activity. The methods used include spatial analysis utilizing Landsat 8 satellite imagery Band 4 (Red) and Band 5 (NIR) to calculate the NDVI (Normalized Difference Vegetation Index), a vegetation time series analysis from 2019–2024, and direct CO2​ concentration measurements taken at three different times (morning, noon, afternoon). The data was processed using ArcGIS with the Kriging Interpolation method to generate spatial distribution maps of CO2​ in both locations. The results show that Jalan Sam Ratulangi has a GOS area of 6.13 ha (94%), while Jalan Percetakan has only 2.95 ha (31%). This difference significantly impacts CO2​ levels, with an average concentration of 484 ppm at Sam Ratulangi, which is lower than Percetakan's average of 567 ppm. The highest CO2​​ value at Percetakan reached 649 ppm during the afternoon, whereas Sam Ratulangi recorded only 488 ppm. This study proves that the wider and healthier the GOS, the lower the CO2​​ concentration detected. These results demonstrate that vegetation plays a significant role in reducing carbon emissions in urban areas, supporting the crucial role of GOS in maintaining air quality and supporting sustainable urban development in Jayapura City.

The increasing number of students in major cities such as Medan has created an urgent need for temporary housing that is adequate, comfortable, and sustainable. In response, the Indonesian government, through the Ministry of Public Works and Public Housing (PUPR), launched the "One Thousand Towers Program," which includes the development of rental apartment buildings (Rusunawa) for students. However, housing provision must go beyond quantity—it must also consider environmental aspects and the quality of life for its occupants. Therefore, a green architecture approach serves as the foundation for the design of environmentally friendly student housing. This project aims to create a vertical residential facility that not only fulfills the basic function of shelter but also supports learning activities, social interaction, energy efficiency, and environmental sustainability. The design applies key principles of green architecture such as natural lighting, cross ventilation, the use of eco-friendly materials, and the integration of green open spaces. In addition to double-room residential units, the building is equipped with supporting facilities such as study areas, a library, cafeteria, and rooftop garden. The design methodology integrates both primary and secondary data analysis, as well as a comprehensive site study covering climate, noise levels, circulation, and building orientation. The building form concept is developed modularly and efficiently through mass transformation, resulting in an inner court that provides natural light and air. Supported by energy-saving utilities, this design is expected to offer a student housing solution that is not only functional and aesthetic but also contributes to sustainable and high-quality urban development.

Housing is a group of houses that serve as residences and are equipped with adequate facilities and infrastructure. Nindya Asri 9 Housing is a housing complex built in Sasak, Meteseh, Kendal Regency, Central Java, by PT. Nindya Karya Utama. This housing complex is planned to have 270 units with types 29-60. This study aims to analyze the technical and economic feasibility of Nindya Asri 9 Housing Complex, reviewed from a comparison of benefit costs, net present value, and other methods. The research method used in this study is descriptive and quantitative. The research data consists of primary and secondary data. The technical feasibility data processing includes the Basic Building Efficiency (KDB), Building Floor Coefficient (KLB), Basic Green Coefficient (KDB), and Green Open Space (RTH). The economic feasibility data processing includes Net Present Value (NPV), Benefit Cost Ratio (BCR), Internal Rate of Return (IRR), Payback Period (PP), and Profitability Index (PI). The analysis results of the interest rate of 10% with an investment period of 10 years. The technical feasibility of KDB is 50.2%, KLB is 0.6, KDH is 79%, and RTH is 58.4%. For economic feasibility, NPV is Rp. 5,506,655,627, BCR is 1.12113647, IRR is 17,09%, PP is 3.75 years, and PI is 1.376. This housing is feasible to use.

Green Open Space (RTH) is an essential element in urban development, playing a crucial role in supporting ecological balance, providing shade, producing oxygen, and absorbing pollution. It also serves as a social and cultural space for the community. The neighborhood park located along the banks of the Deli River on Ileng Street, Medan Marelan District, represents a concrete example of this issue. The current condition of Ileng Park reflects a decline in its quality as a green open space. This study aims to identify existing problems in terms of the park's physical condition, functionality, and user activities. It employs a qualitative descriptive approach grounded in a case study framework, with data collected from both primary and secondary sources. The analysis is conducted using a rationalistic site analysis method. The findings indicate that the community perceives a need for the revitalization of the park to enhance comfort, attractiveness, and the implementation of the Islamic Garden Concept, which is considered appropriate for restoring the park’s function as a green open space.

This study aims to analyze the factors influencing the optimization of green open space (GOS)-based tourism object development at Panatapan Panyabungan Park, Mandailing Natal Regency. This area possesses high ecological and visual potential, yet its management remains suboptimal in terms of facilities, community participation, and institutional support. The study employs a mixed methods approach, combining quantitative methods using multiple linear regression analysis on 150 respondents, and qualitative methods through in-depth interviews with key informants. The results show that simul-taneously, the four independent variables—GOS quality (X1), tourism facilities and infrastructure (X2), community participation (X3), and local government support (X4)—significantly influence the optimization of tourism development (Y). However, partially, only X2 has a significant positive effect, while X1 and X3 have significant negative effects, and X4 has no significant effect. Qualitative findings reveal that the community is not involved in decision-making, and the local government has not demonstrated concrete intervention in managing the area. These findings suggest that the strategy for developing GOS-based tourism objects should emphasize improving basic facilities, establishing participatory governance, and strengthening the structural role of local governments. A collaborative and community-based approach is key to realizing a sustainable tourism area in environmental, social, and economic aspects.

This study aims to compare the level of carbon monoxide (CO) air quality in Green Open Space (GOS) and Non-Green Open Space (NGOS) along the Abepura–Sentani main road in Jayapura City. The research was conducted in two locations: the Taman Makam Pahlawan Denzipur Waena (GOS) and the front area of Mega Waena (NGOS). CO levels were measured using a CO smart sensor over a period of one week, with measurements taken in the morning, noon, and afternoon at six sampling points. The findings indicate that CO concentrations are significantly lower in GOS areas compared to NGOS areas. The presence of vegetation in GOS helps reduce CO pollution by acting as a natural filter. These results highlight the importance of maintaining and developing green open spaces in urban areas as part of efforts to reduce air pollution and improve public health.

The increasing number of elderly people in Yogyakarta City demands the provision of an inclusive environment that supports the welfare of the elderly. This study aims to assess the suitability of Yogyakarta City for the concept of an elderly-friendly city based on seven main variables: green open space, public transportation, pedestrian facilities, health services, social support, elderly-friendly intergenerational interactions, and advocacy for the basic rights of the elderly. The research used a quantitative approach with observation and questionnaire methods to elderly people in all sub-districts in Yogyakarta City. The data were analyzed using a Guttman scale to determine the level of suitability of each variable. The results showed that overall Yogyakarta City is classified as “suitable” for the concept of an elderly-friendly city, with a total score of 5.32 out of a maximum scale of 6.80. Four variables meet the suitability criteria, namely public transportation, health services, social support, and intergenerational interaction. Meanwhile, the other three variables are still not fully suitable and require improvement. This study recommends improvements in these three aspects so that the implementation of the concept of an elderly-friendly city in Yogyakarta City can be more optimal and sustainable.

The rapid population growth in South Tangerang City has led to an increasing demand for housing, public facilities, and adequate community activity spaces. This phenomenon presents a challenge in providing proper and multifunctional spaces efficiently. This study aims to formulate architectural design strategies through a mixed-use development approach as a solution to mitigate the impact of population density in satellite urban areas. A mixed-methods approach, combining both quantitative and qualitative methods, was employed. Data were collected through questionnaires, field observations, spatial analysis, and in-depth interviews with residents and area users. Quantitative analysis was used to measure spatial needs and activity patterns, while qualitative analysis aimed to understand social preferences and local cultural contexts. The findings indicate that integrating residential, commercial, and public facility functions within a single area can improve land-use efficiency, reduce daily mobility, and strengthen inclusive social interaction spaces. The proposed design strategies include vertical spatial organization, flexible zoning, and the provision of green open spaces that support social and ecological sustainability. This research provides a foundation for the development of adaptive, participatory, and sustainable architectural designs for high-density urban areas such as South Tangerang City.

Green Open Space (GOS) plays a strategic role in modern urban planning, serving not only as an ecological element but also as a social, educational, and recreational space that supports the sustainability of urban life. Its presence is a vital necessity in addressing the challenges of urbanization and environmental degradation. This study examines and redesigns Taman Mandiri in Jayapura City as a sustainable urban park capable of accommodating various ecological and social functions. Field observations reveal that the existing condition of the park does not yet meet adequate public facility standards, such as the availability of interaction space, playgrounds, toilets, and parking areas. Through a sustainable landscape design approach, the park is directed to become an inclusive, efficient, and environmentally friendly green open space. The proposed design integrates the use of local vegetation, natural water management systems, and the enhancement of the park’s social functions. It is expected that this design can serve as a model for urban park development in tropical regions facing urbanization pressures and contribute to improving the quality of life in a sustainable manner.

This study aims to assess the feasibility of facilities and infrastructure at the Dok IX Flats (Rumah Susun) located in Tanjung Ria Sub-district, North Jayapura District, Jayapura City, based on the Indonesian National Standard (SNI) 03-1733-2004, as well as residents’ perceptions. The research uses a mixed methods approach, combining quantitative and qualitative methods. Data were collected through field observations and questionnaires distributed to 43 respondents using the Likert scale. The results show that, in general, the housing complex is considered feasible, with an average score of 70 or 76.1%. Facilities such as education, health, worship, green open space, road access, and drainage are considered adequate. However, inconsistencies were found in the disaster mitigation system. Although categorized as "Feasible," field observations revealed damaged evacuation routes and the absence of essential firefighting equipment (APAR). In conclusion, the Dok IX Flats are generally suitable for habitation, but urgent improvements are needed, particularly in the disaster mitigation aspect, to ensure the safety and comfort of the residents.

This study analyzes the morphological form and development characteristics of the Petrosea City Park green open space in Mimika Regency, Central Papua. Using qualitative descriptive-analytical methods, this research examines road patterns, spatial configurations, and architectural elements as well as the physical, economic, and socio-cultural characteristics of park development. The results show that the park implements a radial pattern centered on a roundabout with clear hierarchical zoning, integrating Kamoro cultural landmarks through bronze statues. However, infrastructure limitations and underutilized economic potential indicate the need for integrated development to optimize the function of green open spaces in the context of mining cities in Eastern Indonesia.

Limited land in the urban area of Jayapura Regency is a major challenge in the provision of Green Open Space (RTH), even though the existence of RTH is very important to maintain ecological balance and the quality of the community's living environment. In this context, the Dosay Public Cemetery (TPU) has great potential to be optimized as an alternative green space that is multifunctional-ecological, social, and aesthetic. This study aims to assess community perceptions of the utilization of TPU Dosay as a green space, as well as to formulate a strategy for its sustainable development. The approach used was mixed methods, with data collection through a survey using a Likert scale to 35 respondents, open interviews with 9 key informants, as well as SWOT and AHP analysis. The results showed that most people support the development of TPU Dosay as a reflective green space that is comfortable and ecologically valuable. From the results of AHP analysis, policy and regulation aspects are the top priorities in the development strategy, followed by vegetation and accessibility aspects. Strategic recommendations include the preparation of adaptive vegetation zoning, strengthening the local policy framework, active involvement of indigenous communities, and cross-sector collaboration between local governments, academics and the private sector. With the right strategy, the development of TPU Dosay is expected to be an innovative solution in overcoming the shortage of green spaces in Jayapura Regency.

Land use conversion for vertical hospital development in urban areas represents a strategic response to increasing healthcare demands, particularly in regions with limited land availability. This study aims to analyze the impacts of land use conversion on vertical hospital development in Kelurahan Kota Baru, Abepura District, Jayapura City. The research employs qualitative descriptive methods with spatial analysis and field observations from 2015-2025. Results show significant land conversion from 3.16 hectares (2015) to 0.19 hectares (2025), with wetland areas (58.31%) being the most affected. The study reveals positive impacts including improved healthcare access and local economic growth, alongside negative impacts such as reduced green open spaces and environmental pressure. The findings contribute to sustainable urban planning strategies for healthcare infrastructure development in Papua.

The Community Service Program (KKN) of the Faculty of Economics, UNKRIS, aims to raise awareness and change behavior among the community in Pondokgede sub-district regarding the environment, starting with the household environment in handling organic and inorganic waste through composting and the use of Biopori Infiltration Pits (LRB), waste banks, and greening for Green Open Spaces (RTH). The method used in this study is qualitative analysis. Before the KKN FE UNKRIS activities were implemented, several steps were taken to ensure the smoothness and effectiveness of the program, including preparation, implementation, and evaluation. Overall, the KKN FE UNKRIS program in the environmental conservation movement and its implementation in Pondokgede sub-district has had a positive impact on accelerating the development of Pondokgede sub-district, as evidenced by the improvement in community behavior toward the environment and the level of community satisfaction with the KKN FE UNKRIS program. The implications of this KKN program include the need for continuous monitoring to ensure that community awareness of a clean and healthy environment continues to increase. Additionally, the program should be continued until the stage of utilizing the results of waste processing generated by each community in Pondokgede.

The rapid growth of the city in Pulubala Urban Village, Gorontalo City, has resulted in pressure on the environment and the use of green open space (RTH). This study aims to analyse the use of green spaces in the residential area of Pulubala Village, which is inhabited by various ethnic groups. The method applied was descriptive qualitative, with data collection through observation, interviews, and documentation. The research findings indicate that RTH in Kelurahan Pulubala, covering an area of 0.50 Ha, consists of two categories, namely RTH Settlement Area and Smart Park. The benefits of RTH include play areas for children, social activities, and improved environmental quality. However, problems such as lack of space, poor condition, and environmental pollution threaten the sustainability of RTH. To optimise the utilisation of green spaces, better planning, increased public awareness, and the development of attractive facilities are needed. This research is expected to contribute to the preservation and development of green open spaces in urban areas.

Oil and gas industry activities have the potential to produce high carbon emissions, so Green Open Space (RTH) is needed as an effort to mitigate environmental impacts. Shrub vegetation that grows in RTH areas requires routine maintenance, but this process produces vegetation waste that has not been studied quantitatively. This study aims to analyze the generation of shrub vegetation waste using a sampling method as a basis for sustainable waste management planning. The method used is sampling on a 1 m³ cube-shaped plot in three locations with different vegetation characteristics. Cutting is done manually using simple tools, then the waste produced is put into a measuring box to calculate its volume. The results show that sample point 1 produces 1.00 m³, sample point 2 is 0.50 m³, and sample point 3 is 0.30 m³. The average volume of shrub waste generation is 0.60 m³ per square meter. This data is important for planning the capacity of equipment, labor, and temporary waste disposal locations. In addition, the characteristics of waste that is easy to dry and has a high organic content opens up the potential for reuse as compost or biomass. This method has proven to be effective and efficient in supporting environmentally friendly vegetation waste management strategies as well as part of compliance with environmental regulations such as PROPER.