After the French Revolution, the Eifel, and thereby Sarmersbach too, were ceded to France. The French administration made Sarmersbach the administrative seat of the like-named "mairie" (“mayoralty”), to which belonged not only Sarmersbach but also Beinhausen, Boxberg, Kradenbach, Gefell, Hörschhausen, Katzwinkel, Neichen, Nerdlen, Schönbach and Utzerath. This arrangement persisted into Prussian times in 1815 after the Congress of Vienna (although the German-speaking Prussians called it a "Bürgermeisterei", also meaning “mayoralty”). The Prussians also grouped Sarmersbach into the Daun district in the Rhineland, and this arrangement lasted until the mid-1920s. Ever since, Sarmersbach has been administered by the "Bürgermeisterei" – later the "Verbandsgemeinde" – of Daun.