- 71.12 — Activities in the field of engineering, geology and geodesy, provision of technical advice in these areas
- 43.99 — Other specialized construction work
- 68.20 — Leasing and exploitation of own or leased real estate
- 71.11 — Activities in the field of architecture
- 74.90 — Other professional, scientific and technical activities, n.v.d.g.
- 41.20 — Construction of residential and non-residential buildings
Activity in the field of engineering