Publications

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1978
Babalola, O, Barthlomew WV, Ogunwale JA, Obigbesan GO.  1978.  development, conservation and production potentials of the soil resources of Nigeria. Journal of environmental management. Abstract
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1980
Osuji, GE, Babalola O, Aboaba FO, others.  1980.  Rainfall erosivity and tillage practices affecting soil and water loss on a tropical soil in Nigeria.. Journal of Environmental Management. 10:207–217., Number 3 Abstract
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1981
Isenmilla, AE, Babalola O, Obigbesan GO.  1981.  Varietal influence of intercropped cowpea on the growth, yield and water relations of maize. Plant and soil. 62:153–156., Number 1: Springer Abstract
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1982
Osuji, GE, Babalola O.  1982.  Tillage practices on a tropical soil. II. Maize responses. International journal of biochemistry. Abstract
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1983
Osuji, GE, Babalola O.  1983.  Soil management as it affects nutrient losses from a tropical soil in Nigeria. Journal of environmental management. Abstract
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1991
Ajayi, AS, BABALOLA OZ.  1991.  ZERO-TILLAGE AND INTERCROPPING ON A TROPICAL ALFISOL: EFFECTS ON SOIL PHYSICAL PROPERTIES. Ife Journal of Agriculture. 13:21–31., Number 1 Abstract
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1995
Ajayi, AS, Babalola O.  1995.  ZERO TILLAGE AND INTERCROPPING ON A TROPICAL ALFISOL II RESPONSES OF INTERCROPPED MAIZE AND MELON. Ife Journal of Agriculture. 17:8–20., Number 1 Abstract
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Ajayi, AS, Babalola O.  1995.  ZERO TILLAGE AND INTERCROPPING ON A TROPICAL ALFISOL II RESPONSES OF INTERCROPPED MAIZE AND MELON. Ife Journal of Agriculture. 17:8–20., Number 1 Abstract
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2001
Babalola, O, Jagboro GO.  2001.  An Evaluation of the relationship between cost of items of preliminaries and total construction cost. The Quantity Surveyor. 34:14–22., Number 1 Abstract
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2006
Babalola, O.  2006.  Harnessing the opportunities at the grassroots to make quantity surveying profession competitive at the national and international markets. 22nd Biennial conference/general meeting on Quantity surveying in the 21st Century–Agenda for the Future. Nigerian Institute of Quantity Surveyors. Abstract
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2007
2008
Olubola, B, Abiodun AD.  2008.  AN EVALUATION OF THE FACTORS INFLUENCING THE ACCURACY OF MECHANICAL COST ESTIMATES IN NIGERIA. CURRENT POLITICS AND ECONOMICS OF AFRICA. :207. Abstract
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Babalola, O, Adesanya D.  2008.  An appraisal of the factors affecting production of cost estimate for electrical services in Nigeria, 2008/07/25. 13:200-208. Abstract

PurposeElectrical services contribute a substantial percentage of total construction cost of any particular project. It is essential for estimators to have a detailed knowledge of the factors that affect the incorporation of electrical services cost into the overall building project cost. The overall aim of the study that formed the basis for this paper therefore was to investigate the factors that influence cost estimating of electrical services project.
Design/methodology/approach
The study was carried out based on questionnaire survey of 225 organizations that are involved in cost estimating of electrical services projects in Nigeria. A total of 158 questionnaires out of the 163 retrieved were appropriate for analysis. A list of factors potentially influencing cost estimate for electrical services was identified for the respondents to rate. The data collected were analyzed using factor analysis based on principal component analysis and varimax orthogonal rotation.
Findings
The results shows that the factors affecting production of cost estimate for electrical services could be grouped into four principal factors: the most important factor grouping being estimator competence followed by project technicality, economic requirements and contract requirements.
Practical implications
Many factors are considered by practitioners in the preparation of cost estimate for electrical work in construction project development. The paper has listed about 23 factors that are relevant. However, this paper has shown that four principal factors need to be considered as they explain 64 percent of the factors affect cost estimate production for building project's electrical service works.
Originality/value
Review of literature has shown that there is limited empirical research on the factors influencing cost estimate production for electrical services work. The paper has produced an empirical research on the crucial factors that must be taken into account when producing cost estimate for the electrical service projects.

2009
Babalola, O.  2009.  A study of the core competencies of quantity surveyors in managing electrical and engineering services sub-contract. Journal of Environmental Design and Management. 2:55–64., Number 1 Abstract
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2010
Babalola, O, Babatunde SO, Opawole A.  2010.  Financial probity in public projects procurement and millennium development goals'. Ife Journal of Environmental Design and Management. 4:14–21., Number 1 Abstract
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Musa, N, Babalola O, Oyebisi OO.  2010.  Competencies Required of Quantity Surveying, 2010/01/01. Abstract
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2011
2012
Olusola, BS, Olubola B, Akintayo O.  2012.  An appraisal of career development among female professionals in the Nigerian construction industry. Global Journal of Research In Engineering. 12, Number 2-D Abstract
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Opawole, A, Jagboro GO, Babalola O, Babatunde SO.  2012.  Evaluation of the contribution of construction professionals in budgeting for infrastructure development in Nigeria. International Journal of Sustainable Construction Engineering and Technology. 3:83–95., Number 2 Abstract
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Opawole, A, Babatunde S, Babalola O, Jagboro G.  2012.  Assessment of Building Elements’ Proneness to Variation in Nigeria, 01. Journal of Construction Project Management and Innovation. 2:403-447. Abstract
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2013
Ayodele, AL, Babalola OT, Agbede OA.  2013.  The effects of ferrous sulphate heptahydrate And lead nitrate on the atterberg limits and Consolidation indices of laterite. Ife Journal of Technology. 22:39–45., Number 1 Abstract
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Odediran, S, Babalola O, A. A.  2013.  Assessment of Business Development Strategies in the Nigerian Construction Industry, 03. Journal of Business & Management. 2:34-45. Abstract
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Odediran, S, Babalola O.  2013.  Employment Structure of Informal Construction Workers/Artisans in Nigeria, 2013/12/29. XIII:25-40. Abstract

Every employment has its mode(s) of engagement. The nature of activities within an organization also determines the structure of engagement. Studies have described artisans’ employment in the construction industry as informal because employers fail to obey employment regulations. The paper investigated the employment structure of the informal workers/artisans in the Nigerian construction industry with a view to examine the informal workers’ means of engagement, types of employers, forms of employment and engagement requirements. Study data were collected through a well structured questionnaire administered on informal workers/artisans and contractors. Data were analyzed using both the descriptive and inferential statistics. Cross-tabulation shows the relationship existing among variables of employment while Chi -Square established the significance of these variables. The study found out that informal workers are engaged through previous employers and contacts; however, they often work for building owners and contractors. Building owners and the contractors offer informal workers contract and temporary forms of employments respectively. Both the informal workers (employees) and contractors (employers) confirmed that informal workers/artisans are engaged based study further established that there was a significant relationship between the informal workers’ engagement by previous employers and their previous work experience.