| Woelfelin de Haguenau - Size of the initial oratory | Originating the first extensions. |
| Alexandre Chassain - 18th century architect | Correcting the slope of the roof. |
| Louis Pétin - 19th century architect | Uplifting of the bell tower in 1826-1829. |
| D. Poisat - Architect restorer (XIXe) | Major renovations around 1850. |