The Dutch Building Code (since 2024: Besluit bouwwerken leefomgeving, BBL) contains the minimum technical requirements that all buildings in the Netherlands must meet. It covers requirements for structural safety, fire safety, health, energy efficiency, and usability. The Building Code applies to both permit-required and permit-free structures.
What does the Building Code regulate?
| Subject | Examples |
|---|---|
| Structural safety | Foundation strength, roof structure, beams |
| Fire safety | Fire resistance of materials, escape routes |
| Health | Ventilation, daylight, sound insulation |
| Energy efficiency | Minimum insulation values (Rc), airtightness |
| Usability | Minimum room height, staircase dimensions |
Building Code for DIY projects
The Building Code also applies to permit-free structures. Key points:
| Requirement | Value |
|---|---|
| Minimum Rc wall (new build) | 4.7 m2-K/W |
| Minimum Rc roof (new build) | 6.3 m2-K/W |
| Minimum clear height habitable room | 2.60 m (new build), 2.10 m (existing) |
| Structural safety | Load-bearing structure must be calculated |
> Note: For outbuildings (sheds, garden houses) not used as habitable rooms, less strict requirements apply. However, structural safety must always be in order.
Related terms
- Building permit
- Planning permission
- NEN standard
- Zoning plan
- Insulation value (Rd-value)
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