Contribution to the Amelioration of the Estimation Method of Construction Costs’ Mastering in Developing Countries

In most developing countries the construction costs seem too high to the majority of the population made up of families with very low incomes. One of the means susceptible to contribute to the reduction of costs is its proper mastering. Cost estimation based on matrix approach leads to the description of the principal components of construction cost in a detailed manner. However this model does not take into consideration cost fluctuations through the uncertainty. This article presents an amelioration of the matrix approach using multiple linear regression. We try to show that the estimation of the total construction cost can be inside a tolerance margin known in advance. Also with the improvement of the estimation method, we want to arrive to the mastering of the total construction cost thanks to a forecast allowing being located in the cost reduction zone.