Abstract: The present invention relates to modular columns for construction purposes, which comprise: a metal profile section positioned vertically, functioning as a post that may optionally be anchored to or fixed to the surface of the floor; a series of base modules, “body” and capital, which in turn are formed from two symmetric blocks which have a recess, resulting in a square hollow that is filled with a conventional mixture of cement, river sand and lime, which, once dried, holds the blocks firmly joined to the profile section. The invention furthermore provides a method for the production of the modular columns and also a procedure for the installation thereof, with alternatives for columns that are load-bearing or that are simply for aesthetic purposes, said methodologies involving a series of practical, easy-to-follow steps.