Roof extension in the Netherlands - design, costs and permits
A roof extension creates a full extra level on a flat or partly flat roof, often adding multiple rooms without losing garden space. We design, plan and build it with clear advice, fixed pricing and one accountable team.
This page explains the main choices for a roof extension: layout, materials, budget, planning and whether a permit is likely to be needed.
The key design questions are load-bearing capacity, stair access, facade alignment and how the new roofline fits the existing street.
Design choices
The key design questions are load-bearing capacity, stair access, facade alignment and how the new roofline fits the existing street.
Costs and planning
Expect a longer design and permit phase, followed by a carefully phased build to keep the home weatherproof.
Permit check
A roof extension almost always needs a permit and structural calculations because it changes height, load and appearance.
Frequently asked questions
What does a roof extension cost?+
Costs depend on size, structure, finish level and site access. Expect a longer design and permit phase, followed by a carefully phased build to keep the home weatherproof.
Do I need a permit for a roof extension?+
That depends on location, dimensions and municipal rules. We check this for you before the design is finalised.
Interested?
Request a no-obligation quote. We respond within 24 hours with a first indication.