| Projektstaben i Sverige AB CVR 5564443074 | BoardBoard of Directors | Since 2025 | — | Active |
| Hedström & Taube Projektledning Aktiebolag CVR 5565184602 | BoardBoard of Directors | Since 2020 | — | Active |
| VIZ Arkitektkontor AB CVR 5565795746 | BoardBoard of Directors | Since 2024 | — | Active |
| Kåver & Mellin AB CVR 5567094817 | BoardBoard of Directors | Since 2025 | — | Active |
| Hedström & Taube Gruppen AB CVR 5567426746 | BoardBoard of Directors | Since 2020 | — | Active |
| Hedström & Taube Installationsledning Aktiebolag CVR 5568216617 | BoardBoard of Directors | Since 2020 | — | Active |
| Hedström & Taube Byggekonomi Aktiebolag CVR 5568216633 | BoardBoard of Directors | Since 2021 | — | Active |
| RED Management AB CVR 5568854326 | BoardBoard of Directors | Since 2026 | — | Active |
| Kåver & Mellin i Uppsala AB CVR 5569201915 | BoardBoard of Directors | Since 2025 | — | Active |
| Kåver & Mellin i Stockholm AB CVR 5569219966 | BoardBoard of Directors | Since 2025 | — | Active |
| Wi landskap AB CVR 5569765281 | BoardBoard of Directors | Since 2026 | — | Active |
| Hedström & Taube Miljö Aktiebolag CVR 5590704937 | BoardBoard of Directors | Since 2020 | — | Active |
| KMPJ Sverige AB CVR 5590836119 | BoardBoard of Directors | Since 2025 | — | Active |
| Future Improvement i Stockholm AB CVR 5591416598 | BoardBoard of Directors | Since 2021 | — | Active |
| Projektstugan Stockholm AB CVR 5591575278 | BoardBoard of Directors | Since 2025 | — | Active |
| EnSuCon AB CVR 5591613608 | BoardBoard of Directors | Since 2025 | — | Active |
| Kåver & Mellin i Karlskrona AB CVR 5591804850 | BoardBoard of Directors | Since 2025 | — | Active |
| Qaizen Sverige AB CVR 5592061971 | BoardBoard of Directors | Since 2025 | — | Active |
| VIZ Inredning AB CVR 5592188147 | BoardBoard of Directors | Since 2024 | — | Dissolved |
| Kåver & Mellin i Örebro AB CVR 5592298169 | BoardBoard of Directors | Since 2025 | — | Active |
| Kåver & Mellin i Tierp AB CVR 5592316433 | BoardBoard of Directors | Since 2025 | — | Active |