Property owners in France see their administrative horizon darken with the update of the real estate declaration. While this procedure, which became mandatory in 2023, had already caused confusion, an amendment has just been voted, promising to make the process even more complex. This news has gained increased importance as hundreds of thousands of households have recently faced administrative errors, shaking their confidence in the system. Thus, this new requirement raises more questions about the management of personal information and administrative simplification in the tax field.