Until 1970, the municipality belonged to the Verbandsgemeinde of Daun, when it, along with Beinhausen, Boxberg, Brück, Hörschhausen and Neichen, was annexed to the Verbandsgemeinde of Kelberg.
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.