| Total Invest Holding AS | Oslo | 2020 |
| Total Klima AS | Sandefjord | 2015 |
| Total Konsept AS | Sarpsborg | 2017 |
| Total Maler Service AS | Oslo | 2013 |
| Total Maling AS | Lierstranda | 2018 |
| Total Maximum Bygg AS | Oslo | 2022 |
| Total Miljø AS | Vestnes | 2011 |
| Total Modules Nuf | Bergen | 2019 |
| Total Montering AS | Oslo | 2025 |
| Total Nord Konstrukt AS | Gardvik | 2019 |
| Total Oppussing Ans | Bekkestua | 2006 |
| Total Oppussing-Tjenester Ans | Nesøya | 2006 |
| Total Prosjektledelse Tromsø AS | Kvaløya | 2014 |
| Total Renovering & VVS AS | Oslo | 2021 |
| Total Renovering - Franko Service AS | Tromsø | 2022 |
| Total Rørleggerservice AS | Bergen | 1987 |
| Total Rørservice AS | Ski | 2007 |
| Total Sanering AS | Omastrand | 2023 |
| Total Service AS | Arendal | 1996 |
| Total Service Consulting AS | Stokke | 2025 |
| Total Service Kviven AS | Hornindal | 2012 |
| Total Skadeservice AS | Vinterbro | 2010 |
| Total Snekkertjenester AS | Nøtterøy | 2025 |
| Total Sprinkler AS | Nyborg | 2014 |
| Total Teknikk AS | Algarheim | 2015 |
| Total Teknisk AS | Trondheim | 2012 |
| Total Uteservice AS | Skedsmokorset | 2019 |
| Total VVS AS | Oslo | 2011 |
| Total-Entreprenøren AS | Notodden | 2024 |
| Total-Oppussing AS | Åfjord | 2020 |
| Totalbetong Gruppen AS | Bryne | 2018 |
| Totalbygg AS | Vinterbro | 2020 |
| Totalbygg Hallingdal AS | Hemsedal | 2013 |
| Totalbygg Hemsedal AS | Hemsedal | 2022 |
| Totalbygg Invest AS | Kolvereid | 2012 |
| Totalbygg Midt-Norge AS | Kolvereid | 2012 |
| Totalbygg Oslo AS | Oslo | 2012 |
| Totalbygg Telemark AS | Porsgrunn | 2012 |
| TOTALBYGG1 AS | Bøn | 2024 |
| Totale Tjenester AS | Stavanger | 2019 |
| Totalentreprenør AS | Bergen | 2024 |
| Totalentreprenør Aspens AS | Løten | 2021 |
| Totalentreprenøren AS | Borgen | 2008 |
| Totalfiks AS | Lillestrøm | 2026 |
| Totalisolering AS | Hønefoss | 2015 |
| Totalkonstrukt AS | Oslo | 2014 |
| Totalmaskin AS | Melhus | 2011 |
| Totaloppussing Proff AS | Østerås | 2026 |
| Totalpeis AS | Jar | 2024 |
| Totalprosjekt AS | Jessheim | 1997 |
| Totalprosjekt Namsskogan AS | Namsskogan | 1996 |
| Totalprosjekt Namsskogan Holding AS | Namsskogan | 2021 |
| Totalrenovering AS | Tromsø | 1996 |
| Totalrenovering Og Maling AS | Flatanger | 2015 |
| Totalrenovering Vest AS | Bergen | 2026 |
| Totalriv AS | Porsgrunn | 2019 |
| Totalrør AS | Verdal | 2018 |
| Totalservice 24 AS | Rolvsøy | 2012 |
| Totalservice Alta AS | Alta | 2017 |
| Totaltak AS | Borre | 2018 |
| Totaltak Holding AS | Borre | 2018 |
| Totek AS | Bodø | 2016 |
| Totek Elektro AS | Bodø | 2022 |
| Totek VVS AS | Bodø | 2022 |
| Totembygg AS | Råde | 2025 |
| Toten Alarm AS | Lena | 2015 |
| Toten Anlegg Og Transport AS | Lena | 1998 |
| Toten Bygg Og Montasje AS | Lena | 2017 |
| Toten Bygg Og Rehabilitering AS | Bøverbru | 2021 |
| Toten Bygg Service AS | Lena | 2013 |
| Toten Graveservice AS | Kolbu | 2017 |
| Toten Isolering Ans | Raufoss | 2004 |
| Toten Rørleggerbedrift AS | Kapp | 2023 |
| Toten Rørservice AS | Lena | 2024 |
| Toten Service & Montasje AS | Eina | 2021 |
| Toten Service Og Utleie AS | Raufoss | 2021 |
| Toten Stein Og Anleggsgartner AS | Kolbu | 2012 |
| Toten Varmepumper AS | Gjøvik | 2026 |
| Toten Vei Og Vedlikehold AS | Lena | 2017 |
| Totensveis AS | Raufoss | 2016 |
| Totland Blikk AS | Nesttun | 2012 |
| Totlandsdal Bygg AS | Eikangervåg | 2008 |
| Toto Bygg Ans | Vang På Hedmarken | 1993 |
| Toto Bygg AS | Ekne | 2003 |
| Totohus AS | Vossestrand | 2023 |
| Totommfire Da | Hølen | 2005 |
| Totum Interiør AS | Sola | 2021 |
| Tou City AS | Stavanger | 2012 |
| Toughwood Homes Nuf | Vinni Vald, Lääne-Virumaa | 2017 |
| Toughwood Norge Oü Nuf | Ee-11212 Harju Maakond, Tallinn | 2024 |
| Toughwood Sverige Oü | 11212 Tallinn | 2018 |
| Tour De Flo AS | Stryn | 2013 |
| Tour De Frank Nuf | Dk-5762 Vester Skerninge | 2019 |
| Tova Sprängteknik Nuf | Se-453 38 Lysekil | 2022 |
| Tovdal Fjellhytter AS | Dølemo | 2012 |
| Tovi Elektro AS | Stamnes | 2025 |
| Tovsrud Bygg Og Anlegg AS | Nedre Eggedal | 2019 |
| Towertech AS | Hommelvik | 2014 |
| TP Anleggsteknikk AS | Notodden | 2021 |
| TP Bygg & Consulting Ans | Oslo | 2003 |