| Castella Byggentreprenad AB CVR 5561673038 | BoardBoard of Directors | Since 2025 | — | Active |
| Castella Förvaltning AB CVR 5565725867 | BoardDeputy Board Member | Since 2022 | — | Active |
| Fastighets AB Vita Liljan CVR 5565976379 | BoardDeputy Board Member | Since 2020 | — | Active |
| Substance Technology Holding Sweden AB CVR 5567031488 | BoardDeputy Board Member | Since 2022 | — | Active |
| Gula Backar AB CVR 5567486260 | BoardDeputy Board Member | Since 2022 | — | Active |
| Bofolder Fastighets AB CVR 5567641898 | BoardDeputy Board Member | Since 2022 | — | Active |
| Castella Fastigheter AB CVR 5568522030 | BoardDeputy Board Member | Since 2022 | — | Active |
| Castella Holding AB CVR 5568663883 | BoardDeputy Board Member | Since 2022 | — | Active |
| Järfälla Invest AB CVR 5590121322 | BoardDeputy Board Member | Since 2022 | — | Dissolved |
| Kallhällsfastigheten AB CVR 5590178504 | BoardDeputy Board Member | Since 2019 | — | Dissolved |
| Stäketbron AB CVR 5590196423 | BoardDeputy Board Member | Since 2022 | — | Active |
| Itali Palazzo AB CVR 5590203344 | BoardDeputy Board Member | Since 2020 | — | Active |
| DECOFORM KITCHEN AB CVR 5590515572 | BoardDeputy Board Member | Since 2022 | — | Active |
| A Jerndal Holding AB CVR 5590673371 | BoardDeputy Board Member | Since 2022 | — | Active |
| Vita Liljan Projekt AB CVR 5590760897 | BoardDeputy Board Member | Since 2022 | — | Active |
| A Jerndal Fastighets AB CVR 5590762448 | BoardDeputy Board Member | Since 2022 | — | Active |
| Danderyd Invest AB CVR 5591496830 | BoardDeputy Board Member | Since 2022 | — | Active |
| Motala Rail Fastigheter AB CVR 5592125156 | BoardDeputy Board Member | Since 2020 | — | Dissolved |
| Alcosystems Technology Sweden AB CVR 5592159585 | BoardDeputy Board Member | Since 2022 | — | Active |
| Substance Control Technology Sweden AB CVR 5592159593 | BoardDeputy Board Member | Since 2022 | — | Active |
| Camp Castella Invest AB CVR 5592826241 | BoardDeputy Board Member | Since 2022 | — | Active |
| Camp Castella Norrtälje AB CVR 5593007288 | BoardDeputy Board Member | Since 2022 | — | Active |
| Camp Castella Veddesta AB CVR 5593007296 | BoardDeputy Board Member | Since 2022 | — | Active |
| Stäketbron 2 AB CVR 5595552372 | BoardDeputy Board Member | Since 2026 | — | Active |
| Bostadsrättsföreningen Svalörten 26 CVR 7696218572 | BoardBoard of Directors | Since 2019 | — | Dissolved |