We are used to considering the risks on the architectural heritage as direct attacks on it, such as abandonment, degradation of materials, … However, the loss of said assets can be caused simply by ignorance of them. This is the case of Vicente Sancho Fuster and his work. Vicente Sancho Fuster worked during the first decade of the 20th century in Valencia. His work is part of the trend of Valencian Art Nouveau, along with Vicente Ferrer and Demetrio Ribes. However, he is barely known due to his sudden death at age 35. His work continues being virtually unknown today, even by architects, despite its enormous interest and significance for the history of local and national Art Nouveau architecture. The greatest impediment to the study of his creation is the location of the works he created, because the references found are marked by inaccuracy and lack of data. As a result we find both: works attributed to Vicente Sancho Fuster that are not his own, and works attributed to other authors but in which his signature appears. At the same time, when his work is compared with some of the Art Nouveau buildings which have been protected by municipal law, it can be shown that both deserve to have the same consideration.