The exact origins and original specifications of the synagogue prove difficult to place. Evidence points toward a construction date sometime in the late twelfth century or early thirteenth century. One commonly accepted opinion is that the temple was erected sometime around 1205, as documents from the time mention a "new", great synagogue located in Toledo. Another theory arises from a wooden tablet found in the area that describes a new structure saying, "Its ruins were raised up in the year 4940" [CE 1180]. This date is not irrational as the structure's style is closer to that of Moroccan monuments of the twelfth century such as Tinmal (1153) and Kuturbiyya (1150). If this inscription indeed refers to Santa Maria la Blanca, then the synagogue may in fact be a refabrication of an existing building or a new building located on the same plot as a demolished one. Whether the synagogue's layout might have been lifted from a preexisting mosque located on the same site is still unclear and purely hypothetical.