The study examined the performance of the two project procurement methods often employed by the Nigerian Army. The objective was to find out if one has any advantage over the other. Project success determinants like cost, time and quality formed the basis for evaluation and comparison of the performance of the two methods. Thirty completed building projects made up of ten new buildings and twenty renovation works were examined. Comparison was done based on similarity of projects specifically, the magnitude of work, the type and specifications of work. Fifteen projects made up of ten renovation works and five new projects were thus considered for analysis for each of the two procurement methods compared. Results indicate that there is no significant difference in the quality of projects procured using either of the two procurement methods. Further results also indicate that in terms of cost overrun, there is no significant difference between the two. It was however discovered that overall cost and unit cost of projects were higher for those procured using the traditional contract system. It was also discovered that significant difference does exist between time overruns in the two methods. Projects procured using the direct labour method took more time. The study concludes that there is the need for continuous training and exposure of the in-house professionals to improve their proficiency and efficiency to further enhance the quality of their products and improve upon the time taken to execute them.

The objectives of the study are to determine the procurement methods used by clients to execute maintenance works in Lagos state, identify the factors that influence the choice of those methods and establish the differences in the efficiencies of out-sourced and in-sourced maintenance. Out of the 60 questionnaires sent out to respondents, 34 (giving a response rate of 57%) were retrieved and used for the study. The 34 responses were obtained from randomly selected organizations like Local Authority Housing, Housing Association, Residential Managing Agent, Universities, Health Authorities and Private Commercial Property Owners. The results of the study show that direct labour, lump sum contract and traditional contract, cost reimbursement contract and measured term contracts, are the most commonly adopted procurement methods in Lagos state for maintenance works. Time duration, cost of project and quality level required, are the major factors influencing the choice of procurement methods. Others are risk allocation, price competition and flexibility of contract. Finally, better access to special skills, getting the latest technologies, higher quality work and higher security are the important efficiency factors for out-sourcing and in-sourcing.