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Foundation repair cost Netherlands 2026 — price guide for funderingsherstel
How much does foundation repair cost in the Netherlands in 2026? Overview of costs for pile rot, subsidence, injection, new piling and when an architect and structural engineer are required.
Quick answer
Foundation repair in the Netherlands costs on average € 25,000–€ 120,000 in 2026 depending on the repair method, extent of damage and type of property. An architect and structural engineer are always required for foundation repair: the structural engineer assesses load-bearing capacity, the architect prepares the permit documentation.
Foundation repair costs by method
| Method | Suitable for | Cost | |---|---|---| | Foundation injection (polyurethane) | Minor subsidence, waterlogged subsoil | € 5,000–€ 20,000 | | New pile foundation (concrete piles) | Wooden pile rot, soft soil | € 30,000–€ 70,000 | | Steel screw piles (less excavation) | Limited access, fast execution | € 25,000–€ 60,000 | | Concrete strip foundation replacement | Stable soil, lightweight structure | € 15,000–€ 40,000 | | Foundation widening (underpinning) | Increased load (roof extension) | € 20,000–€ 60,000 | | Full foundation replacement | Severe damage, subsidence > 5 cm | € 60,000–€ 150,000+ |
When are an architect and structural engineer required?
| Situation | Requirement | |---|---| | Foundation repair with excavation | Omgevingsvergunning + structural engineer + architect | | Foundation replacement | Always omgevingsvergunning; structural engineer and architect required | | Roof extension on existing foundation | Structural engineer calculates extra load; architect handles permit | | Cracks in load-bearing walls from subsidence | Structural engineer assessment before repair; architect coordinates | | Listed building or protected property | Architect + Heritage Committee for foundation intervention |
Causes of foundation problems
| Cause | Characteristic sign | Region | |---|---|---| | Pile rot (wooden piles running dry) | Cracks, sticking doors, sloping floors | Amsterdam, Rotterdam, Utrecht | | Soft clay or peat subsoil | Gradual subsidence | Randstad, Green Heart | | Differential settlement vs. neighbour/street | Diagonal cracks in facade | City centres | | Root ingrowth, leaking sewer | Localised soil washing | Everywhere | | Drought (falling groundwater) | Increased pile rot; clay shrinkage | 2022–2026 effect |
Foundation repair process — steps
- Foundation investigation: structural engineer or specialist does measurement + cone penetration tests
- Structural engineer assessment: load capacity calculation and repair method recommendation
- Permit application: architect prepares permit dossier (drawings, structural data, environmental report)
- Neighbour communication: architect coordinates with neighbours (works affect shared walls)
- Foundation repair execution: specialist foundation contractor
- Completion inspection: structural engineer certifies the repair
Architect and structural engineer costs for foundation repair
| Service | Cost | |---|---| | Foundation investigation (structural engineer) | € 500–€ 2,000 | | Load capacity calculation + repair advice (structural engineer) | € 1,000–€ 3,000 | | Permit dossier (architect) | € 2,000–€ 6,000 | | Contract administration (architect) | € 1,000–€ 3,000 |
Conclusion
Foundation repair costs on average € 25,000–€ 120,000 in 2026. A structural engineer and architect are required for virtually every foundation repair involving excavation — for the load calculation, the omgevingsvergunning and coordination of contractors and neighbours.
archi.sulerr.com manages the complete foundation repair process — from structural assessment and omgevingsvergunning to contractor management and neighbour consultation.