Engineering firms FS Geotechnik AG Beratende Ingenieure ETH/SIA Engelgasse 15, 9050 Appenzell AI 071 274 52 00 * Make an appointment 071 274 52 00 *
Planning, Engineering firms HD-Plan GmbH Holzbauplanung Rinkenbach 26, 9050 Appenzell AI 071 788 40 10 * Request quote 071 788 40 10 *
Engineering firms Oekoplan AG Böhleli 8, 9050 Appenzell AI 071 787 00 60 * Make an appointment 071 787 00 60 *
Engineering firms Wälli AG Ingenieure Sandgrube 29, 9050 Appenzell AI 058 100 90 10 * Make an appointment 058 100 90 10 *