The agency TREVI Vanhoudt & Partner active in the following municipalities
Ambleve, Andrimont, Aubel, Aywaille, Baelen, Battice, Bellevaux-Ligneuville, Beverce, Bilstain, Bullingen, Butgenbach, Chaineux, Charneux, Clermont (Verviers), Crombach, Dison, Elsenborn, Ensival, Eupen, Eynatten, Faymonville, Fraipont, Francorchamps, Gemmenich, Goe, Grand-Rechain, Hauset, Henri-Chapelle, Heppenbach, Hergenrath, Herve, Heusy, Hombourg, Jalhay, Julemont, Kelmis, Kettenis, La Gleize, La Reid, Lambermont, Limbourg, Lommersweiler, Lontzen, Malmedy, Manderfeld, Melen, Membach, Meyerode, Micheroux, Montzen, Moresnet, Nessonvaux, Neu-Moresnet, Olne, Pepinster, Petit-Rechain, Polleur, Raeren, Rahier, Recht, Remersdaal, Reuland, Robertville, Rocherath, S-Gravenvoeren, Sankt-Vith (Saint-Vith), Schoenberg, Sint-Martens-Voeren, Sint-Pieters-Voeren, Sippenaeken, Soiron, Soumagne, Spa, Stavelot, Stembert, Stoumont, Teuven, Theux, Thimister, Thommen, Trois-Ponts, Verviers, Waimes, Walhorn, Wegnez, Welkenraedt, Xhendelesse.
Ambleve, Andrimont, Aubel, Aywaille, Baelen, Battice, Bellevaux-Ligneuville, Beverce, Bilstain, Bullingen, Butgenbach, Chaineux, Charneux, Clermont (Verviers), Crombach, Dison, Elsenborn, Ensival, Eupen, Eynatten, Faymonville, Fraipont, Francorchamps, Gemmenich, Goe, Grand-Rechain, Hauset, Henri-Chapelle, Heppenbach, Hergenrath, Herve, Heusy, Hombourg, Jalhay, Julemont, Kelmis, Kettenis, La Gleize, La Reid, Lambermont, Limbourg, Lommersweiler, Lontzen, Malmedy, Manderfeld, Melen, Membach, Meyerode, Micheroux, Montzen, Moresnet, Nessonvaux, Neu-Moresnet, Olne, Pepinster, Petit-Rechain, Polleur, Raeren, Rahier, Recht, Remersdaal, Reuland, Robertville, Rocherath, S-Gravenvoeren, Sankt-Vith (Saint-Vith), Schoenberg, Sint-Martens-Voeren, Sint-Pieters-Voeren, Sippenaeken, Soiron, Soumagne, Spa, Stavelot, Stembert, Stoumont, Teuven, Theux, Thimister, Thommen, Trois-Ponts, Verviers, Waimes, Walhorn, Wegnez, Welkenraedt, Xhendelesse.