The challenge of construction tendering process is a common theme in developing countries especially Nigeria. Tendering process is often tedious, multitasking and complex. Contractors have the responsibility of tendering appropriately for construction projects; and clients as well as consultants have a duty to create an enabling platform for a successful tendering process. This study examines the factors affecting contractors tendering success for construction projects in North-Central Nigeria with an aim to harmonizing the perception of the construction professionals. Semi-structured questionnaires comprising of fifty-five (55) questions retrieved from literature were categorized into six (6) groups which are project characteristics, business benefits, capabilities, bidding situation, client related factors and external environment related factors. The data were retrieved from 299 respondents out of 384 respondents requisite for this study. Frequency, Percentile and Mean Index Score (MIS) were used to analyze the responses. Results indicated a level of agreement among the stakeholders on the top eleven (11) contractors tendering success factors and concludes that expansion of organization expertise, tendering capabilities, flexibility for changes and variations, number of competitors, project difficulties, design constructability, project methodology, tender document detailing, client reputation, involvement of other parties and political consideration to be the top factors affecting contractors tendering success. The practical implication of this is that, there is a broader understanding of the topmost factors affecting contractors tendering success among the stakeholders within the North-Central region of Nigeria. The study recommended that reasonably sufficient time should be given to examine project characteristic in order for the contractors to assess their suitability for every construction projects they intend to tender for. Furthermore, construction design approach, bidding process and project methodology should be properly delineated to all the stakeholders by the client to eliminate vagueness in the tendering process and subsequently, project delivery process.

In recent times, the preference for expatriates in the contractual process in Nigeria has become an issue of controversy and general public interest. As a result, the high presence of these foreign expatriates has raised competitiveness in the construction sector, which is partly caused by indigenous enterprises' incapacity to meet the demands placed on them in terms of construction project delivery. This paper, therefore, investigates the factors influencing clients’ choice of contractor, examines the performance index of both expatriate and indigenous construction firms (ICFs), and analyzes the key performance indicators (KPI) for ICFs to increase their competitive advantage. The methodology involved the administration of structured questionnaires to a paper population of 384 construction experts comprising engineers, architects, quantity surveyors, builders, and project managers in Nigeria. With a response rate of 69%, frequencies/percentages, mean values, relative importance index (RII), and regression model were employed for the analysis. The findings revealed that the most important factors influencing clients’ choice are past performance and experience, equipment capabilities, and quality specification/standards. Additionally, this paper used six (6) KPIs (human resource management, financial management practices client-based strategy, organizational culture practices, smart work methods, and quality management practices) to model the performances of ICFs to increase their competitive advantage in Nigeria. This paper concluded that there is a higher performance of foreign expatriates in terms of time, cost, scope, quality, and satisfaction over their indigenous counterparts. This paper recommended that there is a need for ICFs to increase their equipment capacity and ability to undertake mega projects, develop an effective funding strategy to execute projects and collaborate with international partners to boost their level of competitiveness.