In the Eleventh Malaysia Plan, Malaysia will be pioneering a sustainable city development by retrofitting all Government buildings to be energy efficient. Overall Thermal Transfer Value (OTTV) is a measuring tool of thermal efficiency for building envelope. A case study on iconic 4G11 Tower is carried out to determine the possibility of improving OTTV assessment for existing high-rise office building thus enhance the building’s overall efficiency. Through this exercise, several variables influence the OTTV score such as U-Value, Shading Coefficient (SC) and Window-to-Wall Ratio (WWR). Characterised by Baseline Design, MS1525 Design and Platinum Design, this will be a precedent of OTTV assessment for high-rise office building typology.

Over the past few decades, there has been a growing interest in passive design strategies in the built environment, such as daylight. Using sunlight as the source, passive daylighting aims to provide effective natural lighting into the building while retaining maximum visual comfort without using mechanical equipment. Various research has shown the benefits of the natural environment to aid in human recovery, including daylighting. The majority of the biophilic design studies focused on workplace and healthcare environments such as hospital design. While biophilic architecture brings the meaning of nature to the internal environment, the positive effects of this biophilia are particularly concerned on healthcare facilities as it puts an element of extreme pressure on the space. This paper aims to understand the relationship between the patients and staffs’ experiences of their physical environment, specifically addressing the use of daylighting as aiding the recovery of patients and restorative impact for the users. This paper investigates the effects of daylighting in the inpatient ward at Seri Manjung Hospital through a set of questionnaires distributed to the 50 respondents of male and female users aged18 and above. This inpatient ward space is built with windows and utilising natural lighting during the day.The participants were asked to share their experience on the lighting conditions in the ward space and the impact on their health and recovery. The outcome of this study has shown that passive daylighting technique and biophilic design in inpatient wards help to increase users' connectivity with nature, improve physical and psychological well-being and accelerate the recovery process. Consequently, incorporating passive daylighting and biophilic design in a healthcare setting will shift the hospital's design to be more sustainable and responsive to the environment

By the year 2030, Malaysian population will experience the after effects of the rapid growth of ageing society. This paper investigates the impact of seamless integration of horticultural activity in the new residential typology of retirement community. It is believed that horticultural therapy is not only beneficial for physical and psychological but also promotes socialisation opportunities among the elderly. Comparative analysis method on selected precedent studies has been carried out and analysed in accordance with Malaysian context. Initial findings indicate that a retirement community with horticultural activity gives therapy for healthier well-being. This therapeutic activity can be apositive change in elderly lifestyle and essential towards the establishment of retirement community in Malaysia.

Hospitals and healthcare facilities are known to be among the most energyintensive buildings. This concern has resulted in a resurgence of sustainability awareness in the built environment. Nowadays, many have adopted environmental strategies such as natural ventilation. It offers a low-cost alternative to remove stale air and replace fresh air efficiently through cross ventilation. Studies have shown that natural ventilation is one of the most energyefficient solutions to improve thermal comfort and hospitals and healthcare facilities will greatly benefit from this initiative. Passive Design has been valued as a key strategy in controlling airborne infection, especially in hospital wards with limited resources. Comparatively, the installation of ceiling-mounted mechanical fans will create a negative ventilation pressure difference. This paper explores the potential of the passive design method based on the experience of inpatient ward users. The study utilised questionnaires based on the end user's experience in a naturally ventilated inpatient ward area. The survey administration method ensures the 51 respondents’ anonymity is preserved especially in a healthcare setting. This investigation shows that natural ventilation provides a higher ventilation rate and is more energy-efficient than mechanical ventilation. Therefore, natural ventilation is a suitable solution in public buildings such as hospitals' inpatient wards. The outcome of this study will be paramount for designers to meet passive design objectives. Consequently, these will be the guidelines and outline information for hospital design in the future.