Hacienda Asunción is presumably the oldest remaining coffee plantation on the island dating back to 1821 according to information provided by the Government of Puerto Rico State Historic Preservation Office.  Between 1860 and ca. 1888 it was owned by Eduardo Quiñones Vizcarrondo (1833-1911) and originally consisted of some six hundred cuerdas which were reduced to four hundred after he became the suspect of sedition.

Around 1888, Hacienda Asunción was acquired by Corsican immigrant from Rogliano Domingo Mariani Dominici (1816-1902), who around that time also owned Hacienda Santa Clara II/Malatesta and was one of the creditors of the excessive debt incurred by Quiñones Vizcarrondo.  This fact is described by  Dr. Luis Edgardo Diaz Hernandez in his book Castañer: Una Hacienda Cafetalera en Puerto Rico (1870-1930) when he states "During the summer of 1888 local farmer Eduardo Quiñones Vizcarrondo, who lives within the boundaries of the Municipality of Adjuntas, seems to be in a precarious financial situation.  Juan Castañer advances money to finance his crops but these do not yield the needed return to face his indebtedness, counting only with his land to repay.  In June, Juan Castañer forecloses and acquires 202 cuerdas of the best land which Castañer himself selected.  The value of such land was 17,978.75 pesos." ​

Architect Juan Ortiz Colom in his publication Yauco: Ciudad de Historia y Patrimonio, states that Hacienda Asunción belonged to the Dastas family between 1920 and 1936 when it was sold to the Francisco family, its owner in 1978 was  José J. Francisco (1905- ). 

The structures that remain which are in considerable good condition, date from ca. 1875  and consist of the Manor House remodeled in 1901, and a two story warehouse and machinery house building in front of a medium sized cement "glácil".  In a section underneath the warehouse there are eight movable drying pans.  It is located on PR-374 Ramal Km 4.3.

​The pictures below are part of a 1987 study made by Archeologist Luis Pumarada O'Neill.  Source: Puerto Rico State Historic Preservation Office.