This paper presents an innovative method for planning construction projects that face great challenges to meet the budget and the scheduled dates, due to the direct incidence of uncontrollable external factors such as weather, dollar volatility and inflation. The innovation lies in the application of a methodology based on the 4D-PS model to a real construction project in the city of Medellín (Colombia), with the aim of obtaining a better estimation of the costs and time required for the project. Due to these results, this methodology can be applied and commercialised to other companies, becoming it a technological entrepreneurship from the organisation.