A method of analysing the costs and durations of alternative methods of construction is presented as a possible way of solving some of the problems of the construction industry especially in developing countries. The method involved development and application of database computer programs. The type of data required, the possible sources and the effects of'variation of the data are presented. The use of the method is illustrated by its application to the earthworks and concreteworks associated with three projects: a gravel road project; a three storeyed building project; an oxidation ponds project. The construction data used has been obtained from Kenya. The results of the study have shown how the costs and durations of a wide range of methods can be obtained from the readily available data. This helps project evaluators assess the relative merits of alternative construction methods with reasonable speed and accuracy thus facilitating consideration and adoption of more appropriate methods of construction for any given project.