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The purpose of this paper is to develop several predictive models for estimating the structural construction cost and establish range estimation for the structural construction cost using design information available in early stages of residential building projects.

Information about residential building projects is collected based on project documents from construction companies with regard to the design parameters and the actual structural construction costs at completion. Storey enclosure method (SEM) is fundamental for determining the building design parameters, forming the potential variables and developing the cost estimation models using regression analysis. Nonparametric bootstrap method is used to establish range estimation for the structural construction cost.

A model which is developed from an integration of advanced SEM, principle component analysis and regression analysis is robust in terms of predictability. In terms of range estimation, cumulative probability-based range estimates and confidence intervals are established. While cumulative probability-based range estimates provide information about the level of uncertainty included in the estimate, confidence intervals provide information about the variability of the estimate. Such information could be very crucial for management decisions in early stages of residential building projects.

This study could provide practitioners with a better understanding of the uncertainty and variability included in the cost estimate. Hence, they could make effective improvements on cost-related management approaches to enhance project cost performance.

The purpose of this paper is to present site planning and design (SPD) relevant variables and items in practice for practitioners to better understand and implement SPD in green building projects.

The research methods include questionnaire survey and case studies in the context of China. A questionnaire survey was adopted to identify the importance of 13 variables and the corresponding 38 items in SPD of green residential buildings. Three green residential projects including one in Hong Kong and two in Mainland China were selected to investigate the SPD considerations in practice and to discuss the necessary improvement.

The results show that 12 out of the 13 variables of SPD in green buildings are involved in the three case projects to some extent, thereby underscore the importance of these variables. The potential improvement in real-life SPD of green buildings is also discussed such as adopting design-build and integrated project delivery methods and preserving and protecting cultural characteristics on site.

The research findings may serve as a reference for practitioners to better conduct SPD in green building projects.

Proper performance assessment of residential building renovation is crucial to sustainable urban development. However, a comprehensive review of the literature in this research domain is lacking. This study aims to uncover the study trend, research hotspots, prominent contributors, research gaps and directions in this field.

With a hybrid review approach adopted, relevant literature was examined in three stages. In Stage 1, literature retrieved from Scopus was screened for their relevance to the study topic. In Stage 2, bibliographic data of the shortlisted literature underwent scientometric analyses by the VOSviewer software. Finally, an in-depth qualitative review was made on the key literature.

The research hotspots in performance assessment of residential building renovation were found: energy efficiency, sustainability, thermal comfort and life cycle assessment. After the qualitative review, the following research gaps and future directions were unveiled: (1) assessments of retrofits incorporating renewable energy and energy storage systems; (2) evaluation of policy options and financial incentives to overcome financial constraints; (3) establishment of reliable embodied energy and carbon datasets; (4) indoor environment assessment concerning requirements of COVID-19 prevention and involvement of water quality, acoustic insulation and daylighting indicators; and (5) holistic decision-making model concerning residents' intentions and safety, health, well-being and social indicators.

Pioneered in providing the first comprehensive picture of the assessment studies on residential building renovations, this study contributes to offering directions for future studies and insights conducive to making rational decisions for residential building renovations.

This paper aims to define key performance indicators (KPIs) for measuring performance of production systems for residential building from a production strategy perspective.

A literature review is done to identify suitable competitive priorities and to provide grounds for developing KPIs to measure them. The KPIs are evaluated and validated through interviews with industry experts from five case companies producing multifamily residences. Furthermore, two of the case companies are used to illustrate how the KPIs can be employed for analysing different production systems from a manufacturing strategy perspective.

Defined, and empirically validated, KPIs for measuring the competitive priorities quality, cost (level and dependability), delivery (speed and dependability) and flexibility (volume and mix) of different production systems.

To further validate the KPIs, more empirical tests need to be done and further research also needs to address mix flexibility, which better needs to account for product range to provide a trustworthy KPI.

The defined KPIs can be used to evaluate and monitor the performance of different production systems’ ability to meet market demands, hence focusing on the link between the market and the firm’s production function. The KPIs can also be used to track a production systems’ ability to perform over time.

Most research that evaluate and compare production systems for residential building is based on qualitative estimations of manufacturing outputs. There is a lack of quantitative KPIs to measure performance at a strategic level. This research does this, identifying what to measure, but also how to measure four competitive priorities through 14 defined KPIs.

Offsite construction approaches and methodologies have been proffered a potential solution for controlling “traditional” projects, especially where high levels of complexity and uncertainty exist. Given this, locations such as Western Australia (WA), where there are unique housing provision challenges, offsite construction method was considered a potential solution for not only addressing the complexity/uncertainty challenges but also alleviating the housing shortage. However, whilst acknowledging the benefits of offsite construction, recognition was also noted on perceived barriers to its implementation, primarily relating to cost uncertainty. This recognition is exacerbated by very limited offsite construction cost data and information available in the public domain. In response to this, this paper sims to provide detailed cost analysis of three offsite construction projects in WA.

To hold parameters constant and facilitate cross-case comparative analysis, data were collected from three embedded case studies from three residential housing projects in WA. These projects represent the most contemporary implementation of offsite in WA; where two were completed in 2016/2017 and the third project was still ongoing during the data collection of this research. The research methodological approach and accompanying data analysis component engaged a variety of techniques, which was supported by archival study of project data and evidence gathered from the offsite construction provider.

Core findings revealed three emerging themes from residential offsite construction projects pertinent to cost. Specifically, the overall cost of delivering residential housing project with offsite construction techniques, the cost variability of offsite construction residential housing projects as impacted by uncertainties and the cash flow of residential offsite construction projects based on the payment term. These three major cost drivers are elucidated in this paper.

This research presents new cost insights to complement the wider adoption of offsite construction techniques. It presents additional information to address the limited cost data and information of offsite construction projects available in the public domain particularly for residential housing projects (within the bounded context of WA). It also highlights the further stages needed to enhance data validity, cognisant of universal generalisability and repeatability, market maturity and stakeholder supply chains.

The purpose of this paper is to examine the relative awareness and influence of stakeholders on sustainable residential property development in Lagos, Nigeria. This is with a view to identifying the key stakeholders pertinent to enhancing sustainable residential property development in the country.

Data on awareness and influence of stakeholders on decisions to adopt sustainable residential property were elicited from residential property users, building contractors, property investors, estate surveyors and valuers and government regulatory agencies in Lagos residential property sector. The data were collected by using a questionnaire and analysed using mean item score and analysis of variance.

The result showed that the government regulatory agencies and the building professionals were aware of sustainable buildings, as mean scores measuring their awareness were higher than 2.5 on a scale of 1–5. The level of awareness of users was, however, low (mean score of 2.39). The users and the government regulatory agencies were identified by the stakeholders as being most influential on their decisions to adopt sustainable residential property.

Findings from this study indicate that there is need to promote the users and government regulatory agencies’ activities on sustainable residential property development as the activities of these stakeholders have higher influence on sustainable residential property development decisions in the study area.

This study particularly examines the interrelationships between the activities of stakeholders in sustainable residential property development in Nigeria. This has not been adequately studied in extant literature.

Green construction has begun implementing sustainable and environmentally friendly practices, but there has not yet been an assessment for green construction supply chain risks in the literature. Identification and assessment of potential risks will result in more appropriate risk mitigation strategies to overcome disruptions affecting higher performance. Thus, this study aims to identify green construction supply chain risks of residential mega-projects.

Interpretive structural modeling (ISM) provided a hierarchical model composed of seven layers that elucidated the driving influences between the elements. Matrice d’impacts croises-multiplication appliqúe an classement (MICMAC) analysis classified the elements into the driver, linkage and dependent variables based on their dependence and driving powers, providing a clearer understanding of risk factors and their influential characteristics. Using experts' knowledge and experience is compatible with the subjective nature of ‘supply chain risks’ and is more suitable while collecting pertinent quantitative data which is far more challenging.

Tenable output, using an international expert group, addressed key risk factors. Technical expertise and skilled labor, key customers, and corporate culture are found as elements with most driving power, and the final product and logistics coordination and supply chain configuration found as the most dependent risk factors. Managerial implications addressed the most fundamental risk sources and suggested practical proactive risk management approaches to maximize green supply chain performance.

Identified supply chain oriented key risk factors of the residential green mega projects add novelty to the context of green construction projects' supply chain management. And eliciting the influential relations of the key risk factors provide a bigger picture of key risks in green residential mega projects that can be extended by sub-risks related to process activities. Assessing supply chain risks' interactions in the context of green residential mega projects is a novel contribution to mega construction-project management's body of knowledge. Also, the key risk factors were categorized based on the characteristics known as driving power and dependence.

The morphology of a building describes its outline and influences its architectural aesthetics and the cost directly. However, the literature on the impact of morphology on the aesthetics and cost of urban detached residential buildings is scarce. Thus, this study is significant because its aim was to identify the critical building morphology factors and the relationship that each of them maintains with the cost and aesthetics of urban detached residential buildings.

The multi-method qualitative approach was used to collect the required empirical data through interviews and case studies and to identify the effect of the morphology factors on the aesthetics and construction cost of urban residences in Sri Lanka, respectively. The collected data were analyzed using manual content analysis and descriptive statistics.

The study findings revealed that the morphology factors such as the roof and circulation spaces, open spaces and voids have a high impact on both the building cost and aesthetics. These findings will assist building designers in making effective design decisions on building costs and aesthetics so that a successful design outcome satisfying both the clients and design team could be obtained.

Although morphology has an impact on the cost and aesthetic of buildings, literature on the subject is scarce. Thus, this study is significant in that it aimed at identifying the significant building morphology factors in urban detached residential buildings and identifying their relationship with the cost and aesthetic of those buildings.

The purpose of this paper is to present defects reported by cooperative owners, and to determine the relationship between building characteristics, developer’s/contractor’s company size and defect type.

The analysis is based on defects reported by board members of cooperatives in Sweden through a survey questionnaire. The 1,563 questionnaires were posted by regular mail to the boards of cooperatives for buildings. The current research presents results from analysis of responses from 394 regular residential projects constructed between 2006 and 2013. The responses represent owners’ experience from a total 1,107 buildings.

Findings presented in this study indicate that building quality might be one of the factors contributing to the energy gap. The analysis indicates that the most severe problems reported by cooperatives are issues related to building envelope, particularly shortcomings in the function of windows, issues related to the function of the balcony and cracks in the facade and leakage caused by rain water. The results show that the building quality differs depending on developers’ size, measured by number of employees. The authors have also found a significant relationship between reported defects and location expressed by size of the city/municipality.

The discussion on newly constructed residential buildings has been dominated by the perspective of professionals (inspectors) and contractors (or developers) rather than of the owners/users themselves. This study presents findings from the owners’ perspective, thus contributing the owners’ viewpoint to the debate on building quality.

The importance of lean and sustainability integration in sustainable construction (SC) has been extensively studied. However, a practical and thorough implementation methodology addressing the project life cycle phases is still inadequate. The present study has developed a novel phase-wise sustainable–lean implementation methodology for high-rise residential projects.

The current study has identified the 50 direct conceptual interactions between 11 lean principles and 11 sustainability criteria encompassing 44 different attributes covering 174 sustainability actions. A panel of nine experts validated these interactions, and 50 integration vectors were proposed addressing different phases of the project life cycle of high-rise residential buildings. The experts also analysed the identified integration vectors for their current and likely future implementation in high-rise residential projects.

The interactions between lean and sustainability principles led to the development of a phase-wise implementation methodology. The experts' survey responses on the current level of implementation revealed that 40, 32 and 28% of integration vectors were implemented rarely, sometimes, and frequently, respectively. For likely future implementation, 28 and 72% integration vectors were reported as very likely and extremely likely to implement, respectively. This survey response highlighted the usefulness of identified integration vectors for enhancing the sustainability of high-rise residential projects.

The proposed sustainable–lean implementation methodology acts as a comprehensive guideline for implementing a lean approach to achieve the objectives of SC in high-rise residential projects. This may facilitate the transition from conventional to sustainable building practices using a lean approach.