Building industry is currently under pressing need to move towards a sustainable and productive practice. The demand in residential projects keeps on rising, especially in developing countries. The Industrialized Building System (IBS) is deemed to be more sustainable compared to the traditional construction that uses bricks and mortar. However, there is limited uptake for IBS, especially in the housing sector. The lack of incentives and small-scale projects among main factors impede the increase of implementing IBS in residential projects. Around 5 million housing units have been built in Malaysia by both private and public sector since the first IBS housing project is commenced in 1966. Yet, the gap between supply and demand is around 43% (shortage) with small share for IBS in the housing sector. This study Examined IBS projects growth in term of scale, type and classification development in Malaysian context. Then, analysed reasons, impacts and expected results when employing IBS in Malaysia. The findings illustrate the timeline of IBS establishment and development of IBS housing and building projects in Malaysia. This study tracked the development of IBS with greater focus on housing. Moreover, this study reviewed and analysed the way forward to uplift IBS implementation to a higher level. Finally, this study will guide future research and draw the line for other developing countries to follow the path and learn from such experience.

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Property investment is always enticing, especially the high-rise residential property. The promise of the raising future value of it keeps investors attracted. Urbanisation also contributes to the massive development in this business, and it is hardly ignored. To run the business and to be able to compete with others, developers have to keep the cost attracted for the residents/buyers. The property needs to be well designed to satisfy the economical capital expenditure as well as low operation and maintenance cost. The high density of this development in an urban area makes developers tend to have low awareness of practising sustainability. Inconsistent evaluation, as well as unwell-defined assessment for sustainability, worsen the situation. This research aims to investigate and develop performance evaluation criteria of sustainability for high-rise residential building. Both qualitative and quantitative approaches were implemented through surveys. Three main factors, which are the promotion of a healthy environment, comfortability of residents and energy-saving, found to be the main categories of criteria to be considered. Based on validation through a case study, it is found that providing easy access to public transport is the most critical criteria for promoting a healthy environment. Besides, the usage of low Volatile Organic Compound (VOC) paint can give comfort to residents because it provides healthy indoor air quality. Lastly, the usage of LED bulbs and natural light supports energy saving. The criteria are then used to develop the decision-making model in selecting the best alternative for the building refurbishment, by using Analytical Hierarchy Process (AHP). Application of the decision model in a case study reveals that repainting the building using low VOC paint become the best fit option for enhancing the environment. Developers may implement this in their policy for the redevelopment of their building. The result is limited to the aggregation value; thus, future research is directing into coalition and negotiation among stakeholders by applying payoff optimum and agreement options and also automation in selecting the best technical solution.

Sustainable residential development requires a balance between the increasing demand for housing and the efficient use of materials and resources. The increasing use of industrialized building systems (IBSs) through new building techniques and materials holds high potential as an optimum construction alternative. Although considerable research has been conducted on industrialized buildings, very few studies have focused on low- and mid-rise residential buildings. Therefore, this paper aims to fill this gap. An extensive literature review was conducted to identify the critical success factors (CSFs) followed by an interview to discuss and validate the collected factors. This study resulted in twenty-six factors grouped into five CSFs comprising planning and control, roles and responsibilities, policies and incentives, industry maturity and technology advancement. In addition, 219 survey responses were collected and analyzed. Three factors were perceived differently among organizations including commitment toward IBS policy, implementation of preferential policy for IBSs and imposition of higher taxes on waste dumping. The top five CSFs were early planning to implement IBSs, extended training for local labor, effective communication among project players, project location evaluation and accessibility and standardized design concept adoption. The findings of this paper will help policymakers to review current practices and help develop a roadmap for sustainable IBS development for all industry organizations.

Value-based decision making is the consideration of function and cost in the decision to select the highest possible option. Reviews to previous studies showed that there is a lack of consideration of the criteria of value in the decision-making process. Hence, this research aims to identify the criteria for redeveloping transportation facilities based on function and cost. The ultimate goal of this research is to select the best value alternative for project redevelopment. An abandoned airport was chosen as the case study to evaluate the decision made by the government to invest in the project of transforming the abandoned airport into a hospital that aims to cater to the increasing demand for healthcare. A quantitative and qualitative approach was applied through literature review, survey, and interview to experts in the area of transportation facilities development. Statistical descriptive analysis was used to analyse the first survey, which was to investigate the critical factors under the category of function. The second survey was conducted to select the most valuable alternative for the redevelopment by utilising the Analytical Hierarchy Process (AHP), and it was found that the transportation hub is the most valuable alternative for redeveloping the abandoned airport. The result was then validated by an expert from the industry, and it can be concluded that the value-based decision-making model can be used in enhancing the decision of the redevelopment of transportation facilities by considering both function and cost.