Factors Affecting the Accuracy of a Pre-Tender Cost Estimate in Nigeria

Odusami, Koleola T.; Onukwube, Henry N.
September 2008
Cost Engineering;Sep2008, Vol. 50 Issue 9, p32
Academic Journal
Pre-tender cost estimating of building projects requires extensive knowledge and expertise. Because of inadequate design information in the early design stages, it is extremely difficult for quantity surveyors to arrive at an accurate cost estimate. The main objective of this article is to evaluate the factors affecting accuracy of pre-tender cost estimate in Nigeria. Data was collected, through a questionnaire, from 50 randomly selected quantity surveyors in consulting firms. A 66 percent majority of the respondents are principal partners of their respective firms, eight percent are partners, 10 percent are associate partners, while 16 percent are quantity surveyors employed by consulting firms. The data collected was analyzed using descriptive statistics and an analysis of variance. The study revealed six important factors, based upon the construction industry experience of the quantity surveyors, which affect the accuracy of a pretender cost estimate. These six factors are: expertise of consultants, quality of information and flow requirements, the project team's experience of the construction type, the tender period and market condition, extent of completion of pre-contract design, and the complexity of design and construction. Taking these factors into consideration at the inception stage of the project could improve the accuracy of preliminary cost advice that the quantity surveyor consultant gives his or her client.


Related Articles

  • Analysis of Projects undertaken by Quantity Surveyors in Lagos State, Nigeria. Aje, Isaac Olaniyi; Adedokun, Olufisayo Adewumi; Ibironke, Olajide Timothy // Organization, Technology & Management in Construction;2015, Vol. 7 Issue 1, p1209 

    Due diligence study on the nature of construction projects undertaken were carried out and fifty-eight (58) senior/ associate partners, working in quantity surveying (Qs) firms completed the questionnaires out of Seventy four (74) quantity surveying consultancy firms. Percentile and mean were...

  • The Quantity Surveyor. Weber, Matt // Canadian Consulting Engineer;Dec2014, Vol. 55 Issue 7, p34 

    An interview with Matt Weber, president of the Canadian Institute of Quantity Surveyors - British Columbia (CIQS-BC) is presented. Topics discussed include the most difficult materials and equipments to estimate including site work, mechanical and electrical systems, and general requirements,...

  • Preparation of Tender for Building Conservation Work: Current Practices in Malaysia. Lee, Q. Y.; Lim, Y. M. // Proceedings of World Academy of Science: Engineering & Technolog;May2009, Vol. 53, p1110 

    Building conservation work generally involves complex and non-standard work different from new building construction processes. In preparing tenders for building conservation projects, therefore, the quantity surveyor must carefully consider the specificity of non-standard items and demarcate...

  • THE MEGA ISSUE. Manikas, Michael // Building Economist;Sep2012, p7 

    The author reflects on the need for Australian builders of non-resource based projects to use the services of an Australian Institute of Quality Surveyors (AIQS) Quantity Survey in achieving the best value in a project. It explains how a Quantity Surveyor can reduce the risk on a project and...

  • CURRENT CONSTRUCTION COSTS GUIDE.  // Building Economist;Jun2015, pB1 

    The article offers information about the Current Construction Costs Guide for June 2015 published by the Australian Institute of Quantity Surveyors (AIQS). It presents several conditions for reading the Construction Costs Guide citing that readers exercise their judgment or seek professional...

  • The Role of Stakeholders in Sustaining Professionalism. Fugar, Frank Desmond Kofi; Adinyira, Emmanuel // Building Economist;Sep2009, p25 

    The article examines Quantity Surveying (QS) education in Africa and issues of professionalism that the (QS) industry is facing. Africa's structure for QS education is based on the British model since many of the first qualified quantity surveyors in Africa were trained in Great Britain. The...

  • AIQS BUILDING COST INDEX.  // Building Economist;Mar2015, pA1 

    The Australian Institute of Quantity Surveyors Building Cost index for the month of March 2015 is presented.

  • THE AIQS IS YOUR ONE STOP SHOP FOR YOUR INDUSTRY.  // Building Economist;Dec2011, p1 

    The article offers guides from the Australian Institute of Quantity Surveyors (AIQS) for its members and quantity surveyors including AIQS Building Cost Index, Estimated Design, documentation and constructions times, and current construction costs for June 2011.

  • OSMANLI DÖNEMÄ°NDE KULLANILAN YAKLAÅŸIK MALÄ°YET TAHMÄ°N YÖNTEMLERÄ°. Yılmaz, H. İbrahim; Dikmen, S. Ümit // e-Journal of New World Sciences Academy (NWSA);2012, Vol. 7 Issue 1, p73 

    There is no doubt that throughout all the ages, cost estimations have formed the foundations of the construction planning process. At every age the cost estimate was very important and as it is now budget preparations were made. In the Ottoman times the estimations of new and repair works were...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics