| Friggeråkers Rör Aktiebolag CVR 5560722885 | BoardBoard of Directors | Since 2021 | — | Active |
| Bröderna Adolfsson Aktiebolag CVR 5561091165 | BoardBoard of Directors | Since 2022 | — | Active |
| Medins Ventilation Aktiebolag CVR 5562038983 | BoardBoard of Directors | Since 2025 | — | Active |
| InstallationsBolaget Gbg AB CVR 5563069961 | BoardBoard of Directors | Since 2022 | — | Active |
| Installationsbolaget Sprinkler Gbg AB CVR 5566452404 | BoardBoard of Directors | Since 2020 | — | Active |
| Installationsgruppen Gbg AB CVR 5566814629 | BoardBoard of Directors | Since 2022 | — | Active |
| GasProducts Sweden AB CVR 5567142061 | BoardBoard of Directors | Since 2022 | — | Active |
| Installationsgruppen Invest Gbg AB CVR 5568711120 | BoardBoard of Directors | Since 2022 | — | Active |
| Installationsbolaget Stockholm AB CVR 5569783565 | BoardBoard of Directors | Since 2021 | — | Active |
| Clean Solution Management Sweden AB CVR 5591979322 | BoardBoard of Directors | Since 2022 | — | Dissolved |
| Installationsbolaget Partners Swe AB CVR 5592614399 | BoardBoard of Directors | Since 2021 | — | Dissolved |
| Ullebo Holding AB CVR 5593074858 | BoardBoard of Directors | Since 2022 | — | Active |
| Projektutveckling Falkenberg AB CVR 5593080244 | BoardBoard of Directors | Since 2021 | — | Active |
| Bostadsrättsföreningen Gibraltargatan 12 CVR 7696041172 | BoardBoard of Directors | Since 2022 | — | Active |