Quantity Surveying- Scholarly Publications
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- ItemOpen AccessComparative accuracy of floor area, storey enclosure and cubic methods in preparing preliminary estimate in Nigeria(Macmillan Publishers Ltd., 2011) Akinsiku, O. E.; Babatunde, S.O.; Opawole, A.The aim of construction cost forecasting is to provide an estimate of a construction contract. Construction clients are interested in knowing their financial commitment before the completion of a detailed design. There are various methods used by estimators to forecast the construction cost of building and civil engineering projects. The accuracy of these techniques is, however, impeded by some external factors that need to be overcome or are provided for in order to get a realistic estimated value. This study examined the three most common techniques used in preparing preliminary estimates in Nigeria, namely, the floor area or superficial method, the cubic method and the storey enclosure method. Total construction costs were extracted from the final accounts of 10 bank projects executed within the last 15 months in Lagos metropolis, Nigeria. From the extracted costs, using a random selection, a project was used as the base on which other techniques were used. The data were analysed using their respective deviation from the final cost and the Pearson correlation coefficient was used to test their degree of relationship with the final cost. The study revealed the cubic method of calculating preliminary estimates as having the highest frequency of accuracy closest to the obtained construction value with respect to the 10 projects sampled, whereas the floor area and storey enclosure methods followed behind. However, using the Pearson product moment correlation coefficient, the floor area or superficial method has the greatest relationship to the construction cost; the cubic method came second, whereas the storey enclosure method has the least relationship with the construction cost.
- ItemOpen AccessCritical success factors in public-private partnership (PPP) on infrastructure delivery in Nigeria(Emerald Group Publishing Limited, 2012) Babatunde, S.O.; Opawole, A.; Akinsiku, O. E.Purpose – Federal and State Governments began to explore more subtle alternatives for accessing private sector resources in the delivery and operation of public facilities. The purpose of this paper is to examine the types of infrastructural projects most suitable using public-private partnership (PPP) for executions and identify the critical success factors in PPP on infrastructural projects with a view to strengthening the partnership between the public (government) and private sector. The overall goal is to enhance infrastructural projects delivery in Nigeria. Design/methodology/approach – The primary data consists of survey questionnaires, drawn based on the identified factors on existing literature on critical success factors (CSFs). The structured questionnaires were administered on participants that were involved in the execution of PPP projects, either during the initial stage, construction stage or maintenance and operating stages in Lagos State. Findings – The results of the mean score ranking indicate that transportation, which include roads, rails and airports construction ranked highest followed by provision of electricity and water. Real estate and educational construction projects ranked lowest in terms of suitability of execution using PPPs. However, the result of the one-way analysis of variance (ANOVA) indicates that, there was no significant difference in the suitability of PPP for execution of the types of infrastructural projects delivery. The paper further identified nine CSFs in public-private partnerships as follows: competitive procurement process, thorough and realistic assessment of the cost and benefits, favorable framework, appropriate risk allocation and risk sharing, government involvement by providing a guarantee, political support, stable macroeconomic condition, sound economic policy and availability of suitable financial market. The study, however, showed that well organized and committed public agency; social support; project technical feasibility and multi-benefits objectives are the CFSs that are most important to the private investors. On the other hand, factors such as transparency in the procurement process; shared authority between public and private sector; thorough and realistic assessment of the cost and benefits; commitment and responsibility of public and private sector and strong and good private consortium are the CSFs that are most important to the public clients. Originality/value – The results indicated that there was no significant difference in the suitability of PPP for execution of infrastructural projects delivery. This shows that PPP is suitable for all types of infrastructural projects. What needs to be done is to ensure that all the success factors responsible for successful implementations of PPPs are well structured in a way that its optimum performance can be guaranteed. Also, in identification of the critical factors in PPP it would help to develop a body of PPP knowledge. This knowledge would help in the establishment of relevant laws, regulations and guidelines and in the development of efficient frameworks for best PPP practices.
- ItemOpen AccessStakeholders’ Perception of the Causes and Effects of Construction Delays on Project Delivery(Korea Institute of Construction Engineering and Management, 2012-11) Akinsiku, O. E.; Akinsulire, A.The growing rate of delays is adversely affecting the timely delivery of construction projects. This study therefore assesses construction stakeholders’ perception of the causes of delays and its effects on project delivery in a bid to proffer solution in minimizing the occurrences of delays. Questionnaire was used to elicit responses from construction stakeholders; a total of thirty three causes of delays, seventeen resultant effects of delays and fifteen methods of minimizing construction delays were identified for the study based on literature reviews. The results suggest that client’s cash flow related problems are the main causes of delays while time and cost overruns are the major identifiable effects of delays in construction projects. However, adequate project planning and budgeting were suggested as possible ways of minimizing the occurrences of delays.
- ItemRestrictedAssessment of Quantity Surveyor' Service Quality(Covenant University, 2014-06) Akinsiku, O. E.Quality service delivery is an important and effective factor in the success and failure of any organisation. As a fundamental factor, it should be considered very important for the organisation to remain afloat. As a matter of fact, all service organisations must provide high quality service in order to gain the confidence of their clients. This paper assesses the quality of service being rendered by quantity surveyors with respect to construction clients' perception of it. The questionnaire was designed to collect data based on a 22 item variable which assesses service quality on the premise of tangibility, reliability, responsiveness, assurance and empathy. The data collection involves the assessment of quantity surveyors service by clients. The collected data were analyzed using pair t-test analysis using the SPSS software. Research results show that highest perceived gap was in the reliability dimension and the lowest gap was in the empathy dimension.
- ItemOpen AccessDecision support weighted score system (DSWSS) for selection of construction contractor in Nigeria(Obafemi Awolowo University Faculty of Environmental Sciences, 2014-09) Ajayi, O.M.; Ogunsanmi, E.O.; Akinsiku, O. E.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 professionals 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 as C Sharp (C#). The result gives the weights in percentage that could be assigned to contractor selection criteria (CSC) at both prequalification and tender and tender evaluation criteria. In conclusion, the weighted percentage can be used by decision makers during selection of contractor for construction projects to ensure objectivity judgement.
- ItemOpen AccessIMPACT OF INFLATION TARGETING IN SOUTH AFRICA ON PRIVATE SECTOR SPENDING ON CONSTRUCTION(JClRE, Journal of Department of Estate Management, University of Lagos, Nigeria .., 2016) Babalola, A. J.The purpose of this study is to investigate the effects of inflation targeting on the private sector spending on construction in South Africa. The research approach was quantitative and the data were historical, drawn from different data sources such as South African Reserve Bank, Statistic South Africa and Quantec. The data used were private sector spending on construction as the dependent variable while GDP, inflation rate and interest rate were independent variables covering the period between 1984 and 2011. The estimation technique used is the ordinary least squared method. To ensure that the model is robust and alid, diagnostic check such as R-squared; probability ofF-statistics; and normality were carried out. It as discovered that the model is robust, stable and all the independent variables jointly influenced the pendent variable. The study recommended that the monetary policy in South Africa should look into ays of growing the economy so as to make itsustainable, thereby promoting every sector.
- ItemOpen AccessThe impacts of Building Information Modelling (BIM) on quantity surveying practice(University of Lagos Faculty of Environmental Sciences, 2016-06) Akinsiku, O. E.Building Information Modelling (BIM) is gradually gaining grounds in the global construction industry. The aim of this research is to identify the effects of the adoption of BIM on quantity surveying practice. Questionnaire survey was adopted for eliciting information from respondents who were mainly quantity surveyors. The data obtained were analyzed using Mean Item Score. The findings show that BIM has the capabilities to enhance quantity surveyors’ performances as well as poses a threat to the relevance of the profession in the face of the various capabilities of BIM. The study also found that there are various survival strategies that quantity surveyors can adopt in the face of the adverse impacts of BIM adoption in order to remain relevant in the construction industry. The research will serve as an eye opener on the nobility of BIM to quantity surveyors as well as an early warning signs of what can be of the profession should BIM be fully implemented and functional in the construction industry in Nigeria.
- ItemOpen AccessStrategies for housing affordability in Lagos state(Centre of Construction Management and Leadership Development, University of Johannesburg, 2016-12) Ajayi, O.; Ajayi, O.; Akinsiku, O.; Osunsanmi, T.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 of acquiring land, social miscreants (“Omo Onile”) and affordability. Anti-corruption measures and a responsive judiciary, Cost – saving house design, Land reforms/reviews of land use act and review of fiscal and monetary policies to reduce inflation and interest rate were the strategies to be used to ensure affordable housing. In conclusion, the Government should create an enabling environment for private sector by reducing the interest rate, taxes collected and creation of a viable housing mortgage sector to cater for the need of interested mortgage loan applicants. The use of the land should be constrained to affordable housing.
- ItemOpen AccessPerceptions of Construction Students on Industrial Training in Nigeria(2017-10) Babalola, A. J.; Obianeri, R.ABSTRACT Purpose: This study evaluates the perceptions of construction students on industrial training in Nigeria, with a view to suggesting ways of improving the Student Industrial Working Experience Scheme (SIWES). Design/methodology/approach: The study is a descriptive survey research in which 100 copies of a structured questionnaire, based on the objectives of the study, were administered to assess the perceptions of construction students. The questionnaire was fully responded to. Findings: The study found: that the students benefited from their SIWES programme and were exposed to real working environments in their area of studies; that there were improvements in their personal, working and communication skills; that they gained knowledge of the latest technologies as well as other knowledge that would be useful in their working lives. Practical implications: The study encourages students to participate actively in the SIWES programme and pay serious attention to their industrial supervisors. However, employers should do more to equip students technologically, while the government should adequately fund and monitor the programme in order to meet its objectives. Originality/value: The study examined the present state of the SIWES programme in Nigerian universities and advocates its improvement towards enhancing economic development. Keywords: Construction industry; Construction students; Nigeria; SIWES: Training
- ItemOpen AccessImplementation of total quality management of construction companies in Lagos state, Nigeria(University of Ilorin Faculty of Environmental Sciences, 2018) Ajayi, O.M.; Akinsiku, O. E.; Salami, T.O.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) 17th 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 factors, role of quality department, training and education, employee involvement and client’s satisfaction orientation were constraints affecting the implementation of TQM. The difficulties faced in implementation of TQM were challenges of lack of available quality system documentation, lack of understanding in the process requirement, high cost to implement TQM, lack of TQM exposure and lack of planning. In conclusion, Nigeria construction companies practice TQM at the management level with no adequate quality control and assurance manual. It was therefore recommended that Nigeria construction companies should developed a framework for the purpose of quality standard and for them to compete with their counterpart globally.
- ItemOpen AccessPerception of the Nigerian Quantity Surveyors on the Panorama of Disputes in the Nigerian Construction Industry(International Journal of Environmental Studies and Safety Research, 2018-03) Ojo, S. M.; Babalola, A. J.Persistent disputes among contracting parties in the Nigerian construction industry is a cord in the wheel of effective construction projects delivery. The aim of this study is to evaluate the causes of disputes among the contacting parties in the Nigerian construction industry and to proffer solutions or strategies on how to minimize or resolve them. This study mirrors the perception of The Nigerian Quantity Surveyors (NQSs) as to causes of construction disputes. Stratified random sampling technique was adopted with the use of structured questionnaire for data collection. Eighty (80) questionnaires were distributed and Fifty five (55) professionally qualified Quantity Surveyors in consulting, contracting, educational and public service sectors filled the questionnaire. The study shows that client’s outright refusal to pay for or late payments of work done by contractor and variations order, sub-standard works on the part of contractors and design inadequacies on the part of the consultants are the dominants causes of construction disputes in the Nigerian construction industry. The study concluded that disputes in the Nigerian construction industry can be minimized or avoided if all the stakeholders are always ready to perform their duties as stipulated in the conditions of contract. The study recommends that clients should be financially buoyant before embarking on any construction project in other to pay contractors’ promptly as stipulated in the conditions of contract. Thorough review of the designs will minimize or eliminate variation. To avoid shoddy work, previously completed jobs as claimed by the prospective contractor should be visited to ascertain contractor’s technical capability. To ensure accurate design that meets the client’s need and devoid of inadequacies, design model and briefing section should be a predominant duty of design team to help clients have a better idea of the end product and iron out grey areas before construction phase.
- ItemOpen AccessAn Investigation of Barriers to Females’ Involvement in the Nigeria Construction Industry(University of Benin Faculty of Environmental Sciences, 2018-10) Akinsiku, O. E.; Ajala, N. O.The continuous domination of the Nigeria construction industry by men remains an issue of concern to construction stakeholders as females in the Nigerian construction industry continue to be largely underrepresented. The objective of this study was to investigate the barriers to females' involvement in the Nigerian construction industry with a view to suggesting strategies that will assist to bridge this barrier. The survey reviewed literature on the level of female participation, the perceptions about women, the opportunities available to females and strategies of increasing the number of female participation in the industry. The instrument for data collection was obtained by the use of a survey questionnaire as well as the reviews of extant literature. The sampling method employed is stratified random sampling. The questionnaires were administered to built environment practitioners in consulting and contracting establishment in Lagos metropolis, Nigeria. The findings revealed that the barriers which influence female under-representation in the Nigerian construction industry include; the male-dominated structure of the construction industry, family commitments such as marriage and childbirth, masculine nature of the job, long working hours. The strategies recommended to bridge this barrier include the formulation of employment policies which prevent sexism, educating young women about the industry, providing better working conditions and flexible working policies for women, provision of incentives in order to attract more women into the Nigerian construction industry.
- ItemOpen AccessInfluence ojMacroeconomic Variables on Construction Sector Output: The Key to Smart City Development in Nigeria.(Faculty of Environmental Sciences, University of Lagos, Nigeria., 2019) Babalola, A. J.Texts attached
- ItemOpen AccessLINKING CLIENTS, CONTRACTORS, PROJECT MANAGEMENT AND TRANSACTION COSTS MAGNITUDE IN CONSTRUCTION PROCUREMENT IN NIGERIA(The Lagos Journal of Environmental Studies, 2019) Yahaya, M. L.; Onukwube, H.N.; Babalola, A. J.Project stakeholdersand management efficiency have been regarded as the main variables responsible for high transaction costs in construction project procurement in Nigeria. Additionally, investigations of their effects on transaction costs are relatively few in North-Western, Nigeria. This paper attempts to determine the impact of clients, contractors’ attitudes and the effectiveness of project management on the magnitude of transaction costs (TC) and to determine the significance of such impacts on TC. In order to achieve the objectives, a field survey involving a sample size of 100 procurement expert participants drawn from contracting public and private for procurement of works, services, and goods were employed, using structured questionnaires. Partial least square structural equation modeling (PLS-SEM) was used in analysing the information gathered. The research shows that both client and contractor unethical attitudes towards building procurement influence the transaction costs of each party. Similarly, the effectiveness of project management was useful, but not significant for the TCs. The research concludes that parts of the responsibility of the owners in the transaction are to strengthen mutual knowledge, collaboration and amicable dispute resolution, and mutual relationship with other procurement stakeholders.
- ItemOpen AccessInfluence of Macroeconomic Variables on Cost of Road Infrastruture Development in Nigeria: The Case of Lagos State(, Journal of Contemporary Urbanology, Department of Urban and Regional Planning, Benue State University, PMB 102119, Makurdi, 970001, BNS, Nigeria or P.O.Box 735, Makurdi., 2019-08) Babalola, A. J.; Oni, S. O.Nigeria is deficient in the area of infrastructure development and this is seriously affecting the growth and' sustainable development of the country. This study assessed the influence of macroeconomic variables on the cost of road infrastructure development in Nigeria. The Ex-post facto survey research or causal-comparative research design was adopted. The data on the macroeconomic variables used in the study, including inflation rate, interest rate, exchange rate and Foreign Direct Investment (FDI}inflows in construction sector were obtained from the National Bureau of Statistics (NBS) and Central Bank of Nigeria (CBN), the cost of road infrastructure development for the years under review were obtained from the Ministry of Works Housing and Infrastructure Development, Lagos State while the rates used in the buildup of the cost of the materials were from Guardian's monthly review of building materials prices which has taken care of all states of the country. The study fo that the trends of both the dependent variable and the independent variables were unstable, therefore affecting the nature of the macroeconomic environment prevailing in Nigeria and then causing the slow economic growth of the country. The study also found that there is relationship between the inflation rate, interest rate, exchange rate, FDI inflows in construction sector and the cost of road infrastructure development in Nigeria. The study recommends that the government should embark on policies that will make the Macroeconomic environment to be stable so as to increase the pace of the economic growth, reduce thefrequentfluctuation of construction materials prices and also increasing the development of infrastructures in the country.
- ItemOpen AccessConstraints of Nigeria Indigenous Construction Contractors (NICCS) In a Competitive Business Environment(2020) Akinsiku, O. E.; Oyediran, O. S.Nigeria Indigenous Construction Contractor (NICC) is facing a lot of constraints among which are the quest for survival and relevance in the Nigeria construction sector. Majority of high net-worth construction projects are awarded and executed by foreigners’ managed firms which constitute less than 5 percent of the total number of construction companies operating in Nigeria. This has put the NCCs into a precarious condition as the nation’s construction sector is completely monopolized by foreigners. However, the NICCs are the architects of their own misfortune as over the years, researchers have observed that the outputs of construction activities by NICCs fall below the expected quality standard required, as such, clients’ preference for foreigners’ managed construction companies. This study sets out to investigate the causes of these constraints and why NICCs are majorly predisposed to poor project performance. The study adopted the review of literatures as well as the use of questionnaire to elicit information from construction practitioners. The study identified 19 factors, ranked in order of importance on why clients prefer foreigners’ managed construction enterprise in Nigeria. Factor analysis was used to group these factors into 5 principal factors namely: poor monitoring, controlling and funding challenges, bankruptcy and cost overruns, technical issues, site organization and layout, and materials and construction methods. The findings of the study will assist in improving the competitiveness of NICCs, by so doing; reduce the cost of construction as the competition nest of performing contractors in Nigeria would be widened.
- ItemOpen AccessSustainable Project Delivery of Public Procurement Projects: Contractor Selection Procedure(Springer Nature Switzerland, 2020) Akanmu, J.O.; Ajayi, O.M.; Akinsiku, O. E.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 the frequency of use of contractors’ prequalification criteria. In conclusion, it is important to consider the method of procurement, size of the project and complexity of the project to ensure the optimum balance of experience, positive references, working chemistry and teamwork.
- ItemOpen AccessModel of Predicting Bidding Costs for Construction Projects in Nigeria using Public Procurement Act 2007(International Journal of Engineering Research & Technology (IJERT), 2020) Yahaya, M. L.; Umar, I.; Babalola, A. J.; Sani, M.The costs incurred by various stakeholders participating in the tendering process and their magnitude has attributed incongruity between government and contractors, economic drain and less competition in public sector projects. The aim of the study is to develop model that predict the transaction cost of bidding construction projects based on Public Procurement Act 2007 (PPA 2007). To achieve this, quantitative survey design based on structured questionnaire was used. The data collected from 143 sampled contractors selected using stratified sampling techniques from the North-West states of Nigeria were analyzed using Partial Least Squares-Structural Equation Modeling software. The results from the analysis revealed three (3) major sources of transaction costs identified from the field as; eligibility documents, contract administration costs, and securing related documents methods. In addition, the three identified transaction costs sources were found to be significant determinants of transaction costs for contractors bidding for construction projects of various types. Moreover, bidding costs model was found to exhibit good forecasting power that can be used to predict the magnitude of costs incurred by contractors in bidding projects in Nigeria. The study concludes that the transaction costs of contractors in bidding construction projects on average is 8.21% of contract sum after validating the model with real life data, and it will benefit incoming firms into the industry as a bidder by knowing their entry probable costs indicators for public projects. The study recommends that further studies should be explore to identify some potential factors such as Equipments, financial capability and professional staff strength which could provide new insights into bidding transaction costs incurred for construction projects.
- ItemOpen AccessMacroeconomic Variables and Foreign Direct Investment (FDI) Inflows in the Nigerian Construction Sector(JOURNAL OF CONSTRUCTION INNOVATION AND COST MANAGEMENT (JCICM), DEPARTMENT OF QUANTITY SURVEYING, UNIVERSITY OF LAGOS, NIGERIA, 2020) Babalola, A. J.; Fayomi, M. A.The inconsistence of the macroeconomic variables performance and the low gross domestic savings can attributed to the low infrastructure development in Nigeria. Toreduce the problem of poor infrastructure development in Nigeria, capital must be mobilized from the high income countries to increase the preser: low gross domestic savings. The aim of this study is to investigate the influence of macroeconom; variables on FDI inflows in the Nigerian construction sector. The methodology adopted for this stud. was an ex-post facto survey research because it was based on existing or secondary data. Annual time series data of the FDI inflows in the Nigerian construction sector, Foreign exchange rates, inflation rates; and interest rates were used. Archive materials from Central Bank of Nigeria (CBN)and National Bureau of Statistics (NBS), annual data from 1990 to 2016 were used for analysis. The variables for this stud. were tested for stationarity. The unit root test results revealed that the variables were non-stationary - levels but they attained stationarity at first difference. The regression analysis of Ordinary Least Squ (OLS)method was used to analyse the data. The result revealed that exchange rate has positive impac:: but not significant. The result also indicated that interest rate and inflation rate have negative impact FDI inflows but not significant respectively. Johansen Co- integrated test conducted revealed that th existed a long-run relationship among the variables in the study. The study also established from [ohansen Co-integrated test that FDI and construction sector is significantly eo- integrated, indicatin a valid relationship at 5%. The result from the OLS model indicated that causality that exists between FD and the construction sector is bi-directional. Hence construction sector influence FDI inflows as well FDI inflows influence construction sector in Nigeria. The causality between FDI and the constructi sector should encourage policy decisions that will improve the FDI inflows, which by extension wou, translate to boosting the construction industry's opportunity to meet infrastructure deficit.
- ItemOpen AccessModel of Predicting Bidding Costs for Construction Projects in Nigeria using Public Procurement Act 2007(International Journal of Engineering Research & Technology (IJERT), 2020-02) Yahaya, M.L.; Umar, I.; Babalola, A.J.; Sani, M.The costs incurred by various stakeholders participating in the tendering process and their magnitude has attributed incongruity between government and contractors, economic drain and less competition in public sector projects. The aim of the study is to develop model that predict the transaction cost of bidding construction projects based on Public Procurement Act 2007 (PPA 2007). To achieve this, quantitative survey design based on structured questionnaire was used. The data collected from 143 sampled contractors selected using stratified sampling techniques from the North-West states of Nigeria were analyzed using Partial Least Squares-Structural Equation Modeling software. The results from the analysis revealed three (3) major sources of transaction costs identified from the field as; eligibility documents, contract administration costs, and securing related documents methods. In addition, the three identified transaction costs sources were found to be significant determinants of transaction costs for contractors bidding for construction projects of various types. Moreover, bidding costs model was found to exhibit good forecasting power that can be used to predict the magnitude of costs incurred by contractors in bidding projects in Nigeria. The study concludes that the transaction costs of contractors in bidding construction projects on average is 8.21% of contract sum after validating the model with real life data, and it will benefit incoming firms into the industry as a bidder by knowing their entry probable costs indicators for public projects. The study recommends that further studies should be explore to identify some potential factors such as Equipments, financial capability and professional staff strength which could provide new insights into bidding transaction costs incurred for construction projects.