Construction activities impact the Brazilian economy in a much more including way than the one directly visualized in building products or in heavy constructions. Actually, the real importance and the impact of this activity into the economical atmosphere begins with a complex articulation among the organizations (agents) through the supply chain, linking suppliers up to those activities after the conclusion of the building construction, such as rents, hotels, maintenance, administration and consultant works. In this dissertation, we tried to identify the profile and the interrelations among the agents of the chain, to design all the industry and to evaluate the resulting impact of its multiplier effect over the economy in terms of generation of products, incomes, employment and taxes.