| Ditta | Cantone | NAP | luogo | Sito web | |
|---|---|---|---|---|---|
| Th. Huonder + Partner AG | Zurigo | 8304 | Wallisellen | www.thhp.ch | |
| Thalmann Steger Architekten | Argovia | 5430 | Wettingen | www.thalmannsteger.ch | |
| Theo Wernli AG | Argovia | 5112 | Thalheim | ||
| Think Exergy SA | Ticino | 6850 | Mendrisio | www.thinkexergy.ch | |
| Thomi AG | Berna | 3272 | Walperswil | www.thomiag.ch | |
| Thöny + Thöny GmbH | Grigioni | 7220 | Schiers | www.tt-ofen.ch | |
| Tigges Architekt | 08012 | Barcelona | www.tiggesarchitekt.ch | ||
| Timbatec Holzbauingenieure Schweiz AG | Berna | 3600 | Thun | www.timbatec.ch |
|
| Timbatec Holzbauingenieure Schweiz AG | Zurigo | 8005 | Zürich | www.timbatec.ch |
|
| Timbatec Holzbauingenieure Schweiz AG | Berna | 3012 | Bern |
|
|
| Tiro Ofenbau AG | San Gallo | 9016 | St. Gallen | www.tiro.ch | |
| tiventa AG | Argovia | 5024 | Küttigen | www.tiventa.ch | |
| TiWas.h SA | Ticino | 6830 | Chiasso | www.tiwash.ch | |
| TK Architekten AG | Zurigo | 8006 | Zürich | www.tkarchitekten.ch | |
| TM Concept AG | Argovia | 5000 | Aarau | www.tmconcept.ch | |
| Trachsel Zeltner Architekten AG | Berna | 3600 | Thun | www.tzarch.ch | |
| Treier AG | Argovia | 5107 | Schinznach Dorf | www.treier.ch | |
| TRIBU Architecture SA | Vaud | 1003 | Lausanne | www.tribu-architecture.ch | |
| Trovatelli Architecture SA | Vaud | 1023 | Crissier | www.trovatelli.ch | |
| TRYBA Fenêtres et Portes SA | Vaud | 1610 | Oron-la-Ville | www.tryba.ch |
