| Asfaltti-System Oy CVR 0924008-6 | OtherPerson with significant control | Since 2026 | — | Active |
| Lambertsson Oy CVR 0937993-4 | OtherPerson with significant control | Since 2019 | — | Active |
| Swerock Oy CVR 1509160-3 | OtherPerson with significant control | Since 2019 | — | Dissolved |
| Peab Oy CVR 1509374-8 | OtherPerson with significant control | Since 2019 | — | Active |
| Peab Infra Oy CVR 2303725-2 | OtherPerson with significant control | Since 2019 | — | Active |
| Peab Support Oy CVR 2586326-7 | OtherPerson with significant control | Since 2019 | — | Active |
| Peab Industri Oy CVR 2977551-2 | OtherPerson with significant control | Since 2020 | — | Active |
| Peab Industri Holding Oy CVR 3102070-9 | OtherPerson with significant control | Since 2019 | — | Active |
| Peab Kiinteistökehitys Oy CVR 3136811-5 | OtherPerson with significant control | Since 2020 | — | Active |
