Spanish B2: The passive: ser + participle & se · Grammar

ser + participle, which agrees with the subject, is common in writing and the news: La casa fue construida en 1900, por un arquitecto famoso. In everyday Spanish the pasiva refleja with se is far more usual, and the verb agrees with the thing: Se vende piso. Se venden pisos. With people, se + singular verb: Se busca a los responsables.