Suppressed as a parish in the 19th century and plundered during the Civil War in 1936, the ancient Church of Sant Lawrence of Ubeda (Jaen) started an unstoppable process of deterioration which threatened even with completely ruin of the factory. Thanks to the intervention of the private foundation "Huerta de San Antonio", the process of damage has been stopped and the recovering and consolidation works in the temple have started. During this intervention, several remains of great interest have been discovered, which offer new data on the historical evolution of the building, that will be analyzed in this study.