| Firma | Kanton | PLZ | Ort | |
|---|---|---|---|---|
| swisspor AG | Aargau | 5623 | Boswil | |
| swisspor Romandie SA | Freiburg | 1618 | Châtel-St-Denis | www.swisspor.ch |
| swisswindows Partner | Tessin | 6600 | Locarno | |
| Sylvia Junge Architecte | Genf | 1226 | Thônex | //www.sylvia-junge-architecte.ch |
| TAMA 3D Sàrl | Waadt | 1357 | Lignerolle | www.tama3d.ch |
| taro architekten würenlingen ag | Aargau | 5303 | Würenlingen | www.taroarchitekten.ch |
| TEC2 AG | Luzern | 6030 | Ebikon | //www.tec2.ch |
| TechCom electro ag | St. Gallen | 9200 | Gossau SG | www.techcom.ch |
| Technica Architecture | Wallis | 1997 | Haute-Nendaz | www.mamaisonbois.ch |
| Technoswiss SA | Tessin | 6716 | Acquarossa | |
| Tecnoprogetti SA | Tessin | 6528 | Camorino | www.tecnoprogetti.ch |
| Tecnoservice Engineering SA | Freiburg | 1700 | Fribourg | www.tecnoservice.ch |
| Tecnoservice Engineering SA | Wallis | 1920 | Martigny | www.tecnoservice.ch |
| Tecnoservice Engineering SA | Neuenburg | 2000 | Neuchâtel | www.tecnoservice.ch |
| TECSA | Wallis | 1964 | Conthey | www.tecsa.ch |
| TECSA | Wallis | 1920 | Martigny | |
| Tectom Koller | Thurgau | 8266 | Steckborn | //www.tectom.ch |
| Th. Huonder + Partner AG | Zürich | 8304 | Wallisellen | www.thhp.ch |
| Thalmann Steger Architekten | Aargau | 5430 | Wettingen | www.thalmannsteger.ch |
| Theo Wernli AG | Aargau | 5112 | Thalheim |
