oluwaseyi Ajayi | University Of Lagos, Akoka, Nigeria (original) (raw)

Papers by oluwaseyi Ajayi

Journal of Engineering, Project, and Production Management, 2011

The purpose of this paper is to investigate if the various risk sources in Design and Build proje... more The purpose of this paper is to investigate if the various risk sources in Design and Build projects can be classified into three risk groups of cost, time and quality using the discriminant analysis technique. Literature search was undertaken to review issues of risk sources, classification of the identified risks into a risk structure, management of risks and effects of risks all on Design and Build projects as well as concepts of discriminant analysis as a statistical technique. This literature review was undertaken through the use of internet, published papers, journal articles and other published reports on risks in Design and Build projects. A research questionnaire was further designed to collect research information. This research study is a survey research that utilized cross-sectional design to capture the primary data. The data for the survey was collected in Nigeria. In all 40 questionnaires were sent to various respondents that included Architects, Engineers, Quantity Surveyors and Builders who had used Design and Build procurement method for their recently completed projects. Responses from these retrieved questionnaires that measured the impact of risks on Design and Build were analyzed using the discriminant analysis technique through the use of SPSS software package to build two discriminant models for classifying risks into cost, time and quality risk groups. Results of the study indicate that time overrun and poor quality are the two factors that discriminate between cost, time and quality related risk groups. These two discriminant functions explain the variation between the risk groups. All the discriminating variables of cost overrun, time overrun and poor quality demonstrate some relationships with the two discriminant functions. The two discriminant models built can classify risks in Design and Build projects into risk groups of cost, time and quality. These classifications models have 72% success rate of classification of risks in Design and Build projects. These models are strongly recommended for use of clients, Design and Build contractors and Risk Managers for the management, control and mitigation of future risks in new Design and Build projects. These models will offer appreciable improvements in risk management and mitigations which can enhance better management of future Design and Build projects. This study also recommends that clients and contractors using Design and Build approach should watch out for emerging issues of cost overrun and poor quality in their projects as these can dictate classification of newly encountered risks.

Property Management

PurposeThe study aims to develop a model that supports the application of data science techniques... more PurposeThe study aims to develop a model that supports the application of data science techniques for real estate professionals in the fourth industrial revolution (4IR) era. The present 4IR era gave birth to big data sets and is beyond real estate professionals' analysis techniques. This has led to a situation where most real estate professionals rely on their intuition while neglecting a rigorous analysis for real estate investment appraisals. The heavy reliance on their intuition has been responsible for the under-performance of real estate investment, especially in Africa.Design/methodology/approachThis study utilised a survey questionnaire to randomly source data from real estate professionals. The questionnaire was analysed using a combination of Statistical package for social science (SPSS) V24 and Analysis of a Moment Structures (AMOS) graphics V27 software. Exploratory factor analysis was employed to break down the variables (drivers) into meaningful dimensions helpful ...

Journal of construction project management and innovation, Jun 1, 2018

Total Quality Management (TQM) is managing people and business processes to ensure complete custo... more Total Quality Management (TQM) is managing people and business processes to ensure complete customer satisfaction at every stage. As building projects get large and becoming complex, clients are requiring a higher quality standard for project delivery with lower construction cost. This study intends to assess the constraint and challenges in the implementation of TQM of construction companies. The cross-sectional research design is used for this study and the population entails construction professionals in indigenous and expatriate construction companies in Nigeria. Random sampling procedure was used to select the respondents. A total of 50 questionnaires were distributed and 30 was retrieved and used for the analysis. It gives a response rate of 60%.Statistical Package for Social Science(SPSS) 17 th version is used to analyse using descriptive statistic and the Relative Importance Index(RII) of the level of importance of the factors were calculated. From the study is show that the factors affecting the implementation of TQM are management commitment factors, the role of quality department and training and education. The challenges of TQM are lack of available quality system documentation, lack of understanding of the process requirement and high cost to implement TQM. In conclusion, Nigeria construction companies do not have quality control and assurance manual that will be a guide to monitor the quality of the end products as such most projects are abandoned as a result of poor quality workmanship. It was therefore recommended that Nigeria construction companies should develop a framework for the purpose of quality standard and for them to compete with their counterpart globally.

Public Private Partnership (PPP) has been widely used to deliver public infrastructure and servic... more Public Private Partnership (PPP) has been widely used to deliver public infrastructure and services in most developed countries like UK, Australia and Canada. However in Nigeria, the implementations of PPP for social infrastructure have not been fully adopted despite the benefit of the procurement system in terms of the usage of private sector finances to provide public infrastructure. This study thus assesses the utilization of PPP for social infrastructure in Nigeria. Cross-sectional research design is used for this study and the population comprises of professionals involved in the execution of PPP projects, government agencies and parastatals, public and private institutions, and contracting organisation. Convenience sampling technique method is used for this study of which 68 questionnaires were distributed and 49 was returned and used for the analysis, given an average response rate of 72%. The study shows that the level of utilisation of PPP procurement system is very low as ...

Delay in paying construction contractors has impacted negatively on the effectiveness of the cont... more Delay in paying construction contractors has impacted negatively on the effectiveness of the contractor and as such affect project delivery schedule. Failure to pay contractors for work executed might lead to the contracting firm being insolvent. This research is a form of quantitative research and it a cross -sectional research survey which is a combination of descriptive and explanatory research design. The population of the study comprises of clients, consultant and contractors. A total of 65 questionnaires were distributed and 47 were returned and used for the analysis. It gives a response rate of 72%. Random sampling technique method was used, thus the respondents has equal chances of being selected. Statistical package for social sciences (SPSS 20th version) was used to analyse the data via descriptive and inferential statistic. The finding shows that the causes of delayed payment were unrealistic cash flow, error in claims, poor financial problems and disagreement on valuatio...

Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary d... more Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary despite that fact that land is a finite resource. The gap between supply and demand for housing is an issue for the government to address in order to provide housing at a cheaper rate which is the basic need of man. The purpose of this study is to assess the strategies for affordable housing in Nigeria. Research design was used and the population of the study was Architects, Quantity Surveyors, Engineers, Contractors and project managers. Random sampling technique was adopted for this study. A total of 70 questionnaires were distributed and 51 were returned. This represents a response rate of 73%. Statistical Package for Social Sciences (SPSS) was used for analysis via descriptive and inferential statistics. The study showed that problem of land inaccessibility, stunted financial and mortgage system were the factors affecting housing delivery. Challenges of housing delivery were high cost...

Contractor prequalification process entails screening of contractors by a set of predetermined cr... more Contractor prequalification process entails screening of contractors by a set of predetermined criteria to ensure that the successful prequalified contractors are competent for tender evaluation process and for project success. The purpose of this study is to examine the impact of Contractor Prequalification Criteria (CPC) on construction time performance with a view to develop a model that will assist decision maker in selecting the appropriate contractor who will be able to complete the project within the stipulated time. Cross-sectional survey design was used via descriptive, explanatory and exploratory research design. This study was carried out at Lagos State and the Federal Capital Territory, Abuja. The population of the study was public client organizations and construction professionals. Stratified random sampling technique was used and data were collected using questionnaires. A total of 373 questionnaires were distributed using Cochran formula to generate the sample size. ...

The aim of this study was to develop a computer aided methodology to determine the weights of the... more The aim of this study was to develop a computer aided methodology to determine the weights of the different parameters for contractor selection as there is no standard assessment procedure for evaluating contractor selection criteria (CSC) by decision makers in Nigeria. A survey research is adopted for this study via descriptive research design. The populations are public clients and consultant organisation. Stratified sampling technique method is used because they are of the same homogenous group, that is divided into strata. Questionnaires were distributed to clients' organization and construction professional in consulting firms. The lists of practicing construction professionals were obtained from their professional bodies. The sample size was calculated using Cochran formula while Statistical Package for Social Science (SPSS) 17th version was used to analyse the biographical information of the respondents. The computer aided methodology used is a desktop application known a...

Total Quality Management (TQM) is a continuous method of sustaining improvement and satisfying th... more Total Quality Management (TQM) is a continuous method of sustaining improvement and satisfying the clients’ demands. The essence is to increase competitive, innovation, profits and also to reduce rework. Construction companies had been reluctuant in the implementation of TQM. Thus, the purpose of this study is to assess the challenges and constraints in the implementation of Total Quality Management (TQM) of construction companies with a view to ensure conformity to client specification and satisfaction. Cross sectional research design was used for this study and the population entails construction professionals in indigenous and expatriate construction companies in Nigeria. Random sampling procedure was used to select the respondents. Statistical Package for Social Science (SPSS) 17 version was used to analyse using descriptive statistic and the relative importance index(RII) of the level of importance of the factors were calculated. Findings showed that management commitment facto...

International Journal of Sustainable Construction Engineering and Technology, 2017

Rework is redoing an aspect of building work as a result of poor quality, wrong implementation, c... more Rework is redoing an aspect of building work as a result of poor quality, wrong implementation, changes, and errors. The purpose of this study is to assess the frequency of occurrence of rework on the component of building projects in order to identify where the stakeholders needs to be careful to prevent re –doing the aspect of work. Literatures were reviewed on the sources, occurrence and effect of rework on building project components. Descriptive research design was used for this study and the population of the study was clients’, consultants and contractors within the construction industry. Simple random sampling technique was used to select the respondents, thus each respondent has equal chance of being selected. Ninety – eight (98) questionnaires were distributed and fifty – two (52) were returned given an average response rate of 52%. Statistical package for social sciences (SPSS) 21st version was used for analysis. Frequency, percentage, Mean Item Score, Ranking and Mann-Wh...

Rework occurs as a result of design, construction changes and also as variation which is addition... more Rework occurs as a result of design, construction changes and also as variation which is addition, omission and modification of design. Rework cost is on the increase as a result of these changes and it has indirectly affected contract sum, period of completion and quality of the project. Hence this study intends to examine the causes and effects of rework in building projects. Descriptive research design was used for this study and the population consists of construction professionals from consulting and contracting organization. Simple random sampling technique method was used. A structured questionnaire was used as the principal instrument for collecting data from construction professionals in the industry. A total of 98 questionnaires were distributed and 52 were returned given an average response rate of 52%. Statistical package for social sciences (SPSS) 17 th version was used for analysis via descriptive and inferential statistic. The findings of the study indicates that chan...

The Construction Industry in the Fourth Industrial Revolution, 2019

Selecting a competent contractor is a yardstick for sustainable project delivery. It ensures the ... more Selecting a competent contractor is a yardstick for sustainable project delivery. It ensures the project is completed within time, cost and quality standard. This study assesses the procedure of Nigeria’s public procurement Act of 2007 and identifies the frequency of use of prequalification criteria. The research is both exploratory and quantitative in nature. The population for the quantitative study was public clients and consulting organization. Stratified random sampling technique was used. The sample size was calculated using Cochran formula. A total of 300 questionnaires were distributed using Cochran formula to generate the sample size. From the sample size calculated, 196 were from consulting firms and 31 from public clients’ organization. Statistical Package for Social Science (SPSS) 21st version was used to analyse the data using frequency, percentage, relative importance index (RII) and t-test. There was an agreement between public clients’ and consultant organisation on ...

Contact: seyiajayi71@gmail.com. The author declares that he has no relevant or material financia... more Contact: seyiajayi71@gmail.com. The author declares that he has no relevant or material financial interests that relate to the research described in this paper. Also, the author declares that the submitted paper is his original work and that, upon publication, nothing contained in it will not constitute an infringement of any copyright. Paper received 17.04.2017. Approved 30.05.2017.This paper is licensed under the Creative Commons Attribution-Non Commercial-No Derives 3.0. License. This paper is published with Open Access at www.humsettlement.net.

Contact: osunsanmidayo@gmail.com. The authors declare that they have no relevant or material fina... more Contact: osunsanmidayo@gmail.com. The authors declare that they have no relevant or material financial interests that relate to the research described in this paper. Also, the authors declare that the submitted paper is their original work and that, upon publication, nothing contained in it will not constitute an infringement of any copyright. Paper received 20.04.2017. Approved 30.05.2017.This paper is licensed under the Creative Commons Attribution-Non Commercial-No Derives 3.0. License. This paper is published with Open Access at www.humsettlement.net.

Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary d... more Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary despite that fact that land is a finite resource. The gap between supply and demand for housing is an issue for the government to address in order to provide housing at a cheaper rate which is the basic need of man. The purpose of this study is to assess the strategies for affordable housing in Nigeria. Research design was used and the population of the study was Architects, Quantity Surveyors, Engineers, Contractors and project managers. Random sampling technique was adopted for this study. A total of 70 questionnaires were distributed and 51 were returned. This represents a response rate of 73%. Statistical Package for Social Sciences (SPSS) was used for analysis via descriptive and inferential statistics. The study showed that problem of land inaccessibility, stunted financial and mortgage system were the factors affecting housing delivery. Challenges of housing delivery were high cost...

Journal of Engineering, Project, and Production Management, 2011

The purpose of this paper is to investigate if the various risk sources in Design and Build proje... more The purpose of this paper is to investigate if the various risk sources in Design and Build projects can be classified into three risk groups of cost, time and quality using the discriminant analysis technique. Literature search was undertaken to review issues of risk sources, classification of the identified risks into a risk structure, management of risks and effects of risks all on Design and Build projects as well as concepts of discriminant analysis as a statistical technique. This literature review was undertaken through the use of internet, published papers, journal articles and other published reports on risks in Design and Build projects. A research questionnaire was further designed to collect research information. This research study is a survey research that utilized cross-sectional design to capture the primary data. The data for the survey was collected in Nigeria. In all 40 questionnaires were sent to various respondents that included Architects, Engineers, Quantity Surveyors and Builders who had used Design and Build procurement method for their recently completed projects. Responses from these retrieved questionnaires that measured the impact of risks on Design and Build were analyzed using the discriminant analysis technique through the use of SPSS software package to build two discriminant models for classifying risks into cost, time and quality risk groups. Results of the study indicate that time overrun and poor quality are the two factors that discriminate between cost, time and quality related risk groups. These two discriminant functions explain the variation between the risk groups. All the discriminating variables of cost overrun, time overrun and poor quality demonstrate some relationships with the two discriminant functions. The two discriminant models built can classify risks in Design and Build projects into risk groups of cost, time and quality. These classifications models have 72% success rate of classification of risks in Design and Build projects. These models are strongly recommended for use of clients, Design and Build contractors and Risk Managers for the management, control and mitigation of future risks in new Design and Build projects. These models will offer appreciable improvements in risk management and mitigations which can enhance better management of future Design and Build projects. This study also recommends that clients and contractors using Design and Build approach should watch out for emerging issues of cost overrun and poor quality in their projects as these can dictate classification of newly encountered risks.

Property Management

PurposeThe study aims to develop a model that supports the application of data science techniques... more PurposeThe study aims to develop a model that supports the application of data science techniques for real estate professionals in the fourth industrial revolution (4IR) era. The present 4IR era gave birth to big data sets and is beyond real estate professionals' analysis techniques. This has led to a situation where most real estate professionals rely on their intuition while neglecting a rigorous analysis for real estate investment appraisals. The heavy reliance on their intuition has been responsible for the under-performance of real estate investment, especially in Africa.Design/methodology/approachThis study utilised a survey questionnaire to randomly source data from real estate professionals. The questionnaire was analysed using a combination of Statistical package for social science (SPSS) V24 and Analysis of a Moment Structures (AMOS) graphics V27 software. Exploratory factor analysis was employed to break down the variables (drivers) into meaningful dimensions helpful ...

Journal of construction project management and innovation, Jun 1, 2018

Total Quality Management (TQM) is managing people and business processes to ensure complete custo... more Total Quality Management (TQM) is managing people and business processes to ensure complete customer satisfaction at every stage. As building projects get large and becoming complex, clients are requiring a higher quality standard for project delivery with lower construction cost. This study intends to assess the constraint and challenges in the implementation of TQM of construction companies. The cross-sectional research design is used for this study and the population entails construction professionals in indigenous and expatriate construction companies in Nigeria. Random sampling procedure was used to select the respondents. A total of 50 questionnaires were distributed and 30 was retrieved and used for the analysis. It gives a response rate of 60%.Statistical Package for Social Science(SPSS) 17 th version is used to analyse using descriptive statistic and the Relative Importance Index(RII) of the level of importance of the factors were calculated. From the study is show that the factors affecting the implementation of TQM are management commitment factors, the role of quality department and training and education. The challenges of TQM are lack of available quality system documentation, lack of understanding of the process requirement and high cost to implement TQM. In conclusion, Nigeria construction companies do not have quality control and assurance manual that will be a guide to monitor the quality of the end products as such most projects are abandoned as a result of poor quality workmanship. It was therefore recommended that Nigeria construction companies should develop a framework for the purpose of quality standard and for them to compete with their counterpart globally.

Public Private Partnership (PPP) has been widely used to deliver public infrastructure and servic... more Public Private Partnership (PPP) has been widely used to deliver public infrastructure and services in most developed countries like UK, Australia and Canada. However in Nigeria, the implementations of PPP for social infrastructure have not been fully adopted despite the benefit of the procurement system in terms of the usage of private sector finances to provide public infrastructure. This study thus assesses the utilization of PPP for social infrastructure in Nigeria. Cross-sectional research design is used for this study and the population comprises of professionals involved in the execution of PPP projects, government agencies and parastatals, public and private institutions, and contracting organisation. Convenience sampling technique method is used for this study of which 68 questionnaires were distributed and 49 was returned and used for the analysis, given an average response rate of 72%. The study shows that the level of utilisation of PPP procurement system is very low as ...

Delay in paying construction contractors has impacted negatively on the effectiveness of the cont... more Delay in paying construction contractors has impacted negatively on the effectiveness of the contractor and as such affect project delivery schedule. Failure to pay contractors for work executed might lead to the contracting firm being insolvent. This research is a form of quantitative research and it a cross -sectional research survey which is a combination of descriptive and explanatory research design. The population of the study comprises of clients, consultant and contractors. A total of 65 questionnaires were distributed and 47 were returned and used for the analysis. It gives a response rate of 72%. Random sampling technique method was used, thus the respondents has equal chances of being selected. Statistical package for social sciences (SPSS 20th version) was used to analyse the data via descriptive and inferential statistic. The finding shows that the causes of delayed payment were unrealistic cash flow, error in claims, poor financial problems and disagreement on valuatio...

Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary d... more Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary despite that fact that land is a finite resource. The gap between supply and demand for housing is an issue for the government to address in order to provide housing at a cheaper rate which is the basic need of man. The purpose of this study is to assess the strategies for affordable housing in Nigeria. Research design was used and the population of the study was Architects, Quantity Surveyors, Engineers, Contractors and project managers. Random sampling technique was adopted for this study. A total of 70 questionnaires were distributed and 51 were returned. This represents a response rate of 73%. Statistical Package for Social Sciences (SPSS) was used for analysis via descriptive and inferential statistics. The study showed that problem of land inaccessibility, stunted financial and mortgage system were the factors affecting housing delivery. Challenges of housing delivery were high cost...

Contractor prequalification process entails screening of contractors by a set of predetermined cr... more Contractor prequalification process entails screening of contractors by a set of predetermined criteria to ensure that the successful prequalified contractors are competent for tender evaluation process and for project success. The purpose of this study is to examine the impact of Contractor Prequalification Criteria (CPC) on construction time performance with a view to develop a model that will assist decision maker in selecting the appropriate contractor who will be able to complete the project within the stipulated time. Cross-sectional survey design was used via descriptive, explanatory and exploratory research design. This study was carried out at Lagos State and the Federal Capital Territory, Abuja. The population of the study was public client organizations and construction professionals. Stratified random sampling technique was used and data were collected using questionnaires. A total of 373 questionnaires were distributed using Cochran formula to generate the sample size. ...

The aim of this study was to develop a computer aided methodology to determine the weights of the... more The aim of this study was to develop a computer aided methodology to determine the weights of the different parameters for contractor selection as there is no standard assessment procedure for evaluating contractor selection criteria (CSC) by decision makers in Nigeria. A survey research is adopted for this study via descriptive research design. The populations are public clients and consultant organisation. Stratified sampling technique method is used because they are of the same homogenous group, that is divided into strata. Questionnaires were distributed to clients' organization and construction professional in consulting firms. The lists of practicing construction professionals were obtained from their professional bodies. The sample size was calculated using Cochran formula while Statistical Package for Social Science (SPSS) 17th version was used to analyse the biographical information of the respondents. The computer aided methodology used is a desktop application known a...

Total Quality Management (TQM) is a continuous method of sustaining improvement and satisfying th... more Total Quality Management (TQM) is a continuous method of sustaining improvement and satisfying the clients’ demands. The essence is to increase competitive, innovation, profits and also to reduce rework. Construction companies had been reluctuant in the implementation of TQM. Thus, the purpose of this study is to assess the challenges and constraints in the implementation of Total Quality Management (TQM) of construction companies with a view to ensure conformity to client specification and satisfaction. Cross sectional research design was used for this study and the population entails construction professionals in indigenous and expatriate construction companies in Nigeria. Random sampling procedure was used to select the respondents. Statistical Package for Social Science (SPSS) 17 version was used to analyse using descriptive statistic and the relative importance index(RII) of the level of importance of the factors were calculated. Findings showed that management commitment facto...

International Journal of Sustainable Construction Engineering and Technology, 2017

Rework is redoing an aspect of building work as a result of poor quality, wrong implementation, c... more Rework is redoing an aspect of building work as a result of poor quality, wrong implementation, changes, and errors. The purpose of this study is to assess the frequency of occurrence of rework on the component of building projects in order to identify where the stakeholders needs to be careful to prevent re –doing the aspect of work. Literatures were reviewed on the sources, occurrence and effect of rework on building project components. Descriptive research design was used for this study and the population of the study was clients’, consultants and contractors within the construction industry. Simple random sampling technique was used to select the respondents, thus each respondent has equal chance of being selected. Ninety – eight (98) questionnaires were distributed and fifty – two (52) were returned given an average response rate of 52%. Statistical package for social sciences (SPSS) 21st version was used for analysis. Frequency, percentage, Mean Item Score, Ranking and Mann-Wh...

Rework occurs as a result of design, construction changes and also as variation which is addition... more Rework occurs as a result of design, construction changes and also as variation which is addition, omission and modification of design. Rework cost is on the increase as a result of these changes and it has indirectly affected contract sum, period of completion and quality of the project. Hence this study intends to examine the causes and effects of rework in building projects. Descriptive research design was used for this study and the population consists of construction professionals from consulting and contracting organization. Simple random sampling technique method was used. A structured questionnaire was used as the principal instrument for collecting data from construction professionals in the industry. A total of 98 questionnaires were distributed and 52 were returned given an average response rate of 52%. Statistical package for social sciences (SPSS) 17 th version was used for analysis via descriptive and inferential statistic. The findings of the study indicates that chan...

The Construction Industry in the Fourth Industrial Revolution, 2019

Selecting a competent contractor is a yardstick for sustainable project delivery. It ensures the ... more Selecting a competent contractor is a yardstick for sustainable project delivery. It ensures the project is completed within time, cost and quality standard. This study assesses the procedure of Nigeria’s public procurement Act of 2007 and identifies the frequency of use of prequalification criteria. The research is both exploratory and quantitative in nature. The population for the quantitative study was public clients and consulting organization. Stratified random sampling technique was used. The sample size was calculated using Cochran formula. A total of 300 questionnaires were distributed using Cochran formula to generate the sample size. From the sample size calculated, 196 were from consulting firms and 31 from public clients’ organization. Statistical Package for Social Science (SPSS) 21st version was used to analyse the data using frequency, percentage, relative importance index (RII) and t-test. There was an agreement between public clients’ and consultant organisation on ...

Contact: seyiajayi71@gmail.com. The author declares that he has no relevant or material financia... more Contact: seyiajayi71@gmail.com. The author declares that he has no relevant or material financial interests that relate to the research described in this paper. Also, the author declares that the submitted paper is his original work and that, upon publication, nothing contained in it will not constitute an infringement of any copyright. Paper received 17.04.2017. Approved 30.05.2017.This paper is licensed under the Creative Commons Attribution-Non Commercial-No Derives 3.0. License. This paper is published with Open Access at www.humsettlement.net.

Contact: osunsanmidayo@gmail.com. The authors declare that they have no relevant or material fina... more Contact: osunsanmidayo@gmail.com. The authors declare that they have no relevant or material financial interests that relate to the research described in this paper. Also, the authors declare that the submitted paper is their original work and that, upon publication, nothing contained in it will not constitute an infringement of any copyright. Paper received 20.04.2017. Approved 30.05.2017.This paper is licensed under the Creative Commons Attribution-Non Commercial-No Derives 3.0. License. This paper is published with Open Access at www.humsettlement.net.

Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary d... more Population in urban areas are growing at a rapid rate, thus recycling of land becomes necessary despite that fact that land is a finite resource. The gap between supply and demand for housing is an issue for the government to address in order to provide housing at a cheaper rate which is the basic need of man. The purpose of this study is to assess the strategies for affordable housing in Nigeria. Research design was used and the population of the study was Architects, Quantity Surveyors, Engineers, Contractors and project managers. Random sampling technique was adopted for this study. A total of 70 questionnaires were distributed and 51 were returned. This represents a response rate of 73%. Statistical Package for Social Sciences (SPSS) was used for analysis via descriptive and inferential statistics. The study showed that problem of land inaccessibility, stunted financial and mortgage system were the factors affecting housing delivery. Challenges of housing delivery were high cost...