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In less than a decade to Sustainable Development Goals, the urban solid waste (USW) emanating from households, especially in developing countries, calls for concern. Several policies have been suggested and some implemented, but the challenges facing USW management remain, especially in developing nations. Past studies demonstrated that the fourth industrial revolution (4IR) technologies can be used to improve urban public services. The role of 4IR in mitigating the challenges of USW is yet to receive in-depth research in Nigeria. Thus, the study investigated 4IR role regarding mitigating the challenges facing USW.

Seven cities across Nigeria, including the Federal Capital Territory, were used as the study area to achieve the research objectives via a qualitative research design. Thirty-two semi-structured interviews were conducted from selected regulators, households, legislators, ICT experts, NGOs and waste managers. A thematic approach was adopted to analyse the collated data.

Findings group the USW challenges into five categories. The 4IR technologies can be used to manage USW; thus, they create an opportunity to integrate and promote sustainable clean cities.

This study is confined to the 4IR role concerning mitigating the encumbrances facing USW in Nigeria and proffered feasible policies to enhance a sustainable healthy environment.

Proffered policy solutions will stir policymakers and construction practitioners to think outside the box and offer and better understand how 4IR technologies can be utilised to mitigate those challenges. The outcome will create sustainable clean cities as part of the implication contribution to the body of knowledge.

Evidence from the reviewed literature shows a paucity of literature focussed on 4IR roles in mitigating the encumbrances facing USW in Nigeria. Therefore, this study contributes to the existing research work on 4IR concerning its role in enhancing USW in Nigeria and, by extension, to other developing countries.

Malaysia's open registration system (ORS) scheme, which began in 1997, was established as part of prevention mechanism by the Ministry of Housing and Local Government to plug the leakage in the low-cost housing (LCH) allocation process. After two decades, ineligible persons still secure LCH to the detriment of the Malaysian low-income earners (LIEs) house-buyers/rentals. This paper explored the LCH computerised ORS for LIEs and proffered policy solutions to improve the scheme.

The data were collected via unexplored exploratory sequential mixed methods approach that engaged 25 well-informed participants and the ‘quantilised findings’, validated by the Malaysian LCH policymakers.

This paper found that there is weak compliance to computerised ORS, which is pronounced in states with relaxed eligibility clearance. Also, it was found that under-declaration of income evident in states where there is relaxed verification and lack of data sharing between states and with federal governments, among others, are the root cause of weak compliance to computerised ORS.

This paper is limited to unravelling the encumbrances in the low-cost housing computerised open registration system in Malaysia's major cities. Future research is needed to use relevant information to access the level of enforcement of the computerised open registration system across the states of Malaysia.

This paper recommended that LCH computerised ORS should be devoid of party favouritism, state government should establish functional LCH computerised ORS, and the state and federal governments, should embrace cooperative federalism. Also, applicants should be subjected to the Central Credit Reference Information System check, and culprits should be referred to the Malaysian Anti-Corruption Commission. This paper provides salutary lessons on how to improve the scheme with a view to achieving the Sustainable Development Goals regarding housing in 2030.

This paper demonstrates that the low-cost housing computerised open registration system in Malaysia is yet to be implemented across the states.

The purpose of this study is to conduct a systematic review on encumbrances facing the implementation of GBP in selected African countries. Green building practices (GBP) implementation is germane and promotes the development of a green environment and buildings. Many studies have been conducted on the encumbrances faced with GBP implementation, especially in developing countries. But evidence of a comprehensive study that investigates and analyses these hindrances from different developing countries is missing. Therefore, a systematic review is conducted systematically reviewing the current literature on encumbrances facing the implementation of GBP in selected African countries. Also, the study proffers possible drivers for stakeholders to promote GBP in African countries.

A total of 38 published papers were identified from the Web of Science, Scopus database and supported with materials from Google Scholar related to Africa’s GBP. The continent was divided into five regions, and each region covered three countries.

Two themes emerged from the analysed review – encumbrances facing GBP implementation and possible drivers for stakeholders to promote GBP in African countries. A total of 18 encumbrances and 18 drivers were identified from the analysed literature and grouped into 6 sub-themes.

Current empirical articles were reviewed to suggest the drivers for stakeholders to promote GBP that emerged from this paper. Thus, to enrich the results from this paper, primary source data of regional studies of GBP in Africa’s context should be carried out via the mixed-methods design.

A total of 18 drivers were identified for stakeholders to promote GBP in Africa and form part of the paper’s implications. Also, the paper findings would serve as a treasured suggestion for the stakeholders (policymakers, construction practitioners, clients and academics) who are fascinated by the promotion of GBP across African nations.

This is possibly the foremost analysed systematic review study on GBP implementation in Africa. Therefore, it fills the theoretical gap and proffers possible drivers for stakeholders to promote GBP in the African context.

Studies showed that construction consultants' ethical negligence is a contributing factor to the time and cost over-run of projects. There is limited research on the issues that may have hindered construction consultants' ethical responsiveness during contract administration. Studies regarding influencing factors in the context of Nigeria's quantity surveyors' (QS) ethical responsiveness are rare. Thus, the study aims to investigate the perceived issues and proffers initiatives to promote QSs' ethical responsiveness on construction projects in Nigeria.

To determine the perceptions of QS regarding ethical responsiveness, a phenomenologically driven perspective via face-to-face interviews was conducted with 12 senior professionals in Lagos and Abuja that showed interest in participating in the study and were interviewed. A thematic approach was adopted to analyse the collated data.

Economic, societal and professional issues emerged as the three groups of issues that hindered QS's ethical responsiveness on construction projects in a developing country setting such as Nigeria. Findings show that for ethical responsiveness to be expressed on projects, key stakeholders should be ethically responsible. This is currently missing, especially in public construction projects. Initiatives that can promote key stakeholders' ethical responsiveness on construction projects are examined in this paper.

The paper embraces an important practical implication because practices associated with QS's unethical responsiveness and behavioural impacts on construction projects were identified. This will stir both the regulatory professional bodies and policymakers to enforce and implement feasible initiatives that can promote key stakeholders' collaborative ethical responsiveness on construction projects.

This paper is amongst the few papers that attempted to uncover issues that hinder QS's ethical responsiveness on construction projects in a developing country setting via a qualitative approach. Since these issues are rampant in developing countries, findings from this paper can be used to promote QS's ethical responsiveness in other nations with similar unethical issues.

Researchers and policymakers have given attention to generic skills development in higher institutions. One of the intentions is to broaden graduate employability with generic skills. In South Africa, there is a paucity of research concerning future built environment practitioners’ (FBEP) generic skills development from the students’ perspective. Thus, this paper aims to investigate South Africa’s FBEP generic skills and suggest feasible solutions to improve FBEP generic skills from the students’ perception.

The researchers collated the views of FBEP via a phenomenology type of qualitative research design. It covered selected South African public universities and investigated the discourses that underpin “perceived hindrance” in developing generic skills for FBEP. Selected 30 FBEP were engaged in the virtual interviews across three public universities. Data saturation was achieved. Three themes emerged and were analysed through a thematic analysis.

Findings show that FBEP generic skills development will enhance integrated productivity and higher value for money in construction project delivery. But developing these skills demands a holistic approach. Findings have raised concern with the perceived hindrances facing FBEP in developing generic skills. Findings suggest the need to revisit and revamp the curricula to develop these skills and strengthen policies that will “nip” possible hindrances.

This study was limited to South Africa’s FBEP generic skills from students’ perception. In line with the limited resources, three public universities were covered from the selected provinces in South Africa. Future research with a more diverse sample is needed to ensure a better representative and generalisation of findings.

Findings show that apart from academic knowledge system thinking skills, civic responsibility skills and critical thinking skills are germane for intending construction industry professionals. Others are integrated teamwork skills, good attitude and communication skills, entrepreneurship skills and resources management skills. Findings from this paper may stir up the education sector’s stakeholders to revamp the curricula in enhancing these skills among students from the basic to higher institutions. The outcome will improve productivity in the construction industry.

Although few scholars have discussed generic skills in the built environment, there are limited studies from the students’ context in developing countries, a South Africa case study, a gap this research aims to fill. Also, it proffers ways to mitigate perceived hindrances facing FBEP in developing generic skills.

Studies showed that policy influences housing provision. The review of these policies in the Southeast Asia's is possibly not yet adequate because of recent gap in housing demand-supply across the region. This review evaluates the state policy in low-cost housing (LCH) provision in Southeast Asian developing countries reported in published studies.

An electronic search (ScienceDirect, Scopus, Web of Science, and Google Scholar) was conducted using the following search terms: “Low-Cost Housing policy in Southeast Asia.” Reference list of identified studies was scanned to identify more studies. Studies published between 1991 and 2020 that focused either on the region or country within the region were selected. An independent reviewer extracted data from the studies using a standardised form and 27 studies were included in this review.

LCH developing countries experience, encumbrances and measures to mitigate LCH demand-supply gap in Southeast Asia were the issues addressed from the reviewed. Findings from the studies indicate that the level of lax state policy and enforcement of LCH varies across nations.

Findings and recommendations of this paper were based on systematically reviewed literature but does not compromise the robustness regarding state policy in low-cost housing provision in Southeast Asian developing countries. Thus, exploratory sequential mixed methods approach has been recommended as part of the implications for future research.

As part of the practical implications, this paper highlights the mechanism behind the success of Singapore LCH policy and transferability of the model to the developing countries within and outside the region, and open up the possibility to adopt these policies.

This study is probably the first systematic review on low-cost housing in Southeast Asia.

Procurement management in infrastructure development has gained considerable attention in developing countries. It is because of the success in the developed nations. Studies have shown that Nigeria's infrastructure development needs far exceed its current provision. Also, studies are scarce to reveal whether procurement management has been successful in infrastructure development projects in Nigeria. Therefore, this paper investigated the root cause of the perceived encumbrances impeding procurement management in infrastructure development projects and proffered policy measures to improve future Nigeria's infrastructure development.

Data were collected via unexplored exploratory virtual interviews and selected cases from secondary sources. The engaged construction and engineering consultants have been involved in the procurement management of infrastructure projects in Nigeria. Thematic analysis was adopted to analyse the collected data.

The root causes of the pitfalls that emerged from the study include lack of competition and transparency, embezzlement and mismanagement of public funds, snail speed bureaucracy and bottleneck and lack of skills and knowledge. Others are collusion/bid-rigging/price-fixing/cartel formation, corruption, lack of professionalism, unbridled politicking, embezzlement and mismanagement of public funds, incompetence of tender boards, lack of patriotism to national service and lack of government organisations’ procurement capacity.

This paper is restricted to unravelling the encumbrances in procurement management of Nigeria's infrastructure development projects. Future research is desirable to adopt a quantitative approach for more extensive coverage and validate findings from this paper.

The paper findings, including those learnt from each case study evaluated, would undoubtedly influence policymakers and construction and engineering practitioners on the key strategies to employ in implementing future procurement management in Nigeria's infrastructure development projects.

This paper would assist policymakers and other stakeholders desirous of improved infrastructure to focus their priorities in mitigating the identified root cause hindering procurement management in Nigeria's infrastructure management.

Studies have proved that wood sawmill workers are exposed to high occupational risks if not well managed. In developing countries, many wood sawmills are found in urban and semi-urban areas. Studies exploring how residents near these wood sawmills perceive and react to these risks is scarce in Nigeria. The application of the fourth industrial revolution (4IR) technology is possibly one of the ways to manage the likely hazards. This study aims to investigate the possible hazards associated with timber sawmills in residential areas and the role of 4IR technologies in proffering feasible solutions to mitigate them in Nigeria’s cities.

Data were sourced from three cities and nine sawmills across Nigeria. Face-to-face interviews were conducted with authoritative participants (residents, environmentalists, government agencies, sawmill owners, 4IR technology experts and medical experts) who have been championing the regulation and safety of timber sawmill locations within the cities (Lagos, Benin City and Owerri) via a phenomenology type of qualitative research and supplemented by secondary sources.

Findings show that timber sawmills are located across the three cities in Nigeria and may have contributed to the health and environmental challenges of the people living in the neighbourhood. The identified hazards were grouped into three sub-themes (physical, health and environmental hazards). Findings identify robots, modularisation, cyber-physical systems, the internet of things and services and human-computer interaction as the digitalised technology that can be used in sawmills to mitigate hazards for the benefit of mankind.

The paper is limited to hazards that residents in timber sawmills locations may face in Nigeria’s cities and data collected via face-to-face 23 interviews. The paper’s referral to past publications in the findings and discussion section compensated for the small sample size.

As part of this paper’s implications, the emerged recommendations will strengthen collaboration with relevant stakeholders regarding control measures via the use of 4IR technologies in timber sawmills. This will stir up policymakers to develop possible policies that will promote and create the platform for the implementation of 4IR technologies in city sawmills.

Apart from probably being the first paper to explore the hazards of residents in timber sawmill locations and proffer solutions via the usage of the 4IR technology, this paper’s contribution emphasis the need for in-depth future studies regarding the risk perceptions of Nigeria’s residents living in timber sawmill area.

The recent COVID-19 pandemic has exposed the declining conditions of many of the hospital buildings, especially in developing countries. Past studies have shown inadequate maintenance practices but how far regarding Nigerian public hospital buildings is yet to receive empirical research. This paper aims to investigate the underlying issues leading to inadequate maintenance practices and proffers policy options to improve Nigerian public hospital buildings via an unexplored dimension.

The study used a mixed research design method involving both qualitative and quantitative data. First, results from the qualitative phase were analysed and verified at the quantitative phase through a well-structured questionnaire, developed from the qualitative findings across hospital maintenance experts (work/maintenance department, health-care provider, design team and health-care building/service contractor) in Abuja, Lagos and Benin City.

Insufficient funds for maintenance works, absence of planned maintenance programmes, inadequately trained personnel, etc., emerged as the maintenance inadequacies in the public hospital buildings across the cities covered. The paper categorised the cause of inadequate maintenance practices of public hospital buildings into six groups: statutory requirements, design stage, construction stage, budget for maintenance task, managing maintenance unit activities and user’s perception regarding maintenance management.

This paper is limited to maintenance practices of Nigerian public hospital buildings. Future research is needed to evaluate factors that will enhance outsourcing maintenance and the use of the 4th industrial revolution (building information modelling for refurbishment and building automation systems) amongst others in maintenance practices of public hospital buildings.

As part of the practical implication, the government and hospital administrators should make provision for adequate funding and accountability of annual maintenance budgetary allocation. Also, the government should establish a national maintenance policy for public infrastructure with an emphasis on preventive maintenance and contractor’s reputation, outstanding pedigree, technical and financial soundness during build maintenance contract award, etc., were recommended.

This paper reveals that the stakeholders, especially hospital administrators, policymakers and political office holders that are concern with maintenance budget, approval and disbursement concerning maintenance practices in public hospital buildings need to reawaken to her responsibility because of the inadequate implementation across the cities covered.

The Nigerian Government has been left behind in the planning of homes for the senior citizens as they are aged and retire from service. The possible outcome is untimely death of many because of contagious illness associated with the dilapidated environment in their abode. Hence, this paper attempts to investigate the hindrances of home ownership faced by senior citizens and proffers possible policy solutions.

A phenomenology type of qualitative research was adopted and 30 participants were interviewed. That is, ten from four different state government agencies and 20 senior citizens using purposive and snowball sampling techniques and data saturation was also achieved. The data derived were analysed using MAXQDA 2018 and through a thematic analysis.

This paper found that Nigerian low-income senior citizens (LISCs) who owned houses lived more stable well-being. Whilst the level of home ownership was completely dissatisfying as failed mortgage finance, corruption in the pension scheme, relaxed National Housing Policy implementation and inadequate senior citizens’ home ownership policy were identified as the encumbrances.

This paper is limited to exploring the root cause of LISCs’ inability to gain home ownership and proffering possible solutions. Future research is needed to use relevant information in advancing home ownership policy for the low-income groups across the states in Nigeria and other developing countries.

This paper recommended that government should impose housing construction on three acres and above, mitigate corruption, establish special housing loan scheme for senior citizens, sustain rent-to-own policy and land subsidy in cities to enhance senior citizens’ home ownership. These recommendations form part of the paper's practical implications.

This paper demonstrates that existing housing policies are yet to consider the senior citizens regarding enhancing their home ownership status.