Semi-detached extension in the Netherlands - design, costs and permits
A semi-detached extension adds living space to a semi-detached home while preserving balance with the neighbouring property. We design, plan and build it with clear advice, fixed pricing and one accountable team.
This page explains the main choices for a semi-detached extension: layout, materials, budget, planning and whether a permit is likely to be needed.
Side and rear options are both possible, but the design must respect rooflines, privacy and the shared street image.
Design choices
Side and rear options are both possible, but the design must respect rooflines, privacy and the shared street image.
Costs and planning
Foundation, facade matching and neighbour communication should be handled before construction starts.
Permit check
Side extensions are more often permit-sensitive than rear extensions and need an early planning check.
Frequently asked questions
What does a semi-detached extension cost?+
Costs depend on size, structure, finish level and site access. Foundation, facade matching and neighbour communication should be handled before construction starts.
Do I need a permit for a semi-detached 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.