Since the first studies on focalizing ser (‘to be’) constructions in the late eighties, some investigations that explore the formal aspects of these constructions have been published. However, there is still little data and the use of this construction in various areas of the variational Spanish domain remains unknown. The results of this work show the vitality of this construction in the scarcely studied Colombian area Antioquia, more specifically Medellin. The analysis emphasizes, among other things, the close relationship between these constructions and pseudo-clefts sentences, their widespread use to focus prepositional phrases and auxiliary verbs in periphrasis, and the inversely proportional relationship that seems to exist between their use and the socioeconomic status of the speaker.