| PreBad AB CVR 5560165499 | BoardBoard of Directors | Since 2022 | — | Active |
| Nils Lundholm AB CVR 5561888701 | BoardBoard of Directors | Since 2022 | — | Active |
| Concentus Properties AB CVR 5562012533 | BoardBoard of Directors | Since 2022 | — | Active |
| Part Construction AB CVR 5562120310 | BoardBoard of Directors | Since 2021 | — | Active |
| Concentus i Kalix Aktiebolag CVR 5562216977 | BoardBoard of Directors | Since 2022 | — | Active |
| PARTBYGGEN I KALIX AB CVR 5564003357 | BoardBoard of Directors | Since 2022 | — | Active |
| Space Interior Sverige AB CVR 5564689775 | BoardBoard of Directors | Since 2021 | — | Active |
| Modulsystem i Kalix AB CVR 5565353611 | BoardBoard of Directors | Since 2025 | — | Active |
| Polarstar AB CVR 5566380720 | BoardBoard of Directors | Since 2022 | — | Active |
| Modulinvest i Kalix AB CVR 5566628722 | BoardBoard of Directors | Since 2025 | — | Active |
| Partalen AB CVR 5566839683 | BoardBoard of Directors | Since 2020 | — | Active |
| Stabsområdet i Kalix AB CVR 5566965298 | BoardBoard of Directors | Since 2022 | — | Active |
| PCS Modulsystem i Göteborg AB CVR 5567179006 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| Part IT AB CVR 5567484299 | BoardBoard of Directors | Since 2022 | — | Active |
| Rum i Rum AB CVR 5567534861 | BoardBoard of Directors | Since 2020 | — | Active |
| Next Gen Construction AB CVR 5568380579 | BoardBoard of Directors | Since 2022 | — | Active |
| Nelumbo AB CVR 5568777410 | BoardBoard of Directors | Since 2022 | — | Active |
| Part East AB CVR 5568969579 | BoardBoard of Directors | Since 2022 | — | Active |
| Modulfastigheter i Kalix AB CVR 5590030010 | BoardBoard of Directors | Since 2025 | — | Active |
| Publika Fastigheter Sverige AB CVR 5590520762 | BoardBoard of Directors | Since 2022 | — | Active |
| Part Group AB CVR 5590520820 | BoardBoard of Directors | Since 2020 | — | Active |
| Isolamin Sweden AB CVR 5590632898 | BoardBoard of Directors | Since 2020 | — | Active |
| Tallvik Förvaltning AB CVR 5590632922 | BoardBoard of Directors | Since 2020 | — | Active |
| Sveavalvet 6 AB CVR 5590796065 | BoardBoard of Directors | Since 2022 | — | Active |
| Elektrolåset Sverige AB CVR 5591130249 | BoardBoard of Directors | Since 2022 | — | Active |
| Stabo i Piteå AB CVR 5591143390 | BoardBoard of Directors | Since 2022 | — | Active |
| Part Systems Sweden AB CVR 5591501282 | BoardBoard of Directors | Since 2022 | — | Active |