Drought puts foundations of nearly half a million homes under pressure
A nationwide model estimates that around 425,000 homes face foundation risks.
Drought, falling groundwater levels and subsidence increase the risk of foundation problems in the Netherlands. Deltares warns that older homes, particularly those with wooden piles or shallow foundations, are vulnerable, but emphasises that this is a risk estimate, not a count of homes that have already suffered damage.
According to Deltares, around 425,000 Dutch homes face foundation risks. The model examines factors including subsidence, drought, changes in groundwater levels and the deterioration of foundation materials. The figure does not mean that all these homes have cracks or require immediate repairs.
The risks vary according to soil and construction method. Wooden piles generally remain protected as long as they are below the groundwater level. If the water table falls for a prolonged period, oxygen can reach the wood and deterioration may occur. Homes with shallow foundations may instead respond to the shrinking and swelling of clay or to uneven subsidence.
Dry periods are not the only cause. The age of a foundation, groundwater management, pressure on the soil and nearby works also play a role. Deltares says that foundation problems are therefore no longer solely a local issue affecting peat meadow areas and historic city centres.
Knowledge of the precise scale remains insufficient. For many buildings, it is not known what type of foundation was used or what condition it is in. Deltares is therefore calling for a nationwide knowledge base, better data and a uniform risk assessment to help local authorities, homeowners and housing associations determine where investigations are most needed.
For many homeowners, the financial impact is difficult to absorb. Foundation repairs are not automatically covered by buildings insurance when drought or subsidence is considered the cause. The debate is therefore not only about construction technology, but also about how costs and responsibility should be divided between owners, local authorities, water boards and central government.
One story, several perspectives
What is established
- Deltares estimates that around 425,000 homes face foundation risks.
- Drought, changes in groundwater levels and subsidence can exacerbate foundation problems.
- For many buildings, data on the type and condition of the foundation is lacking.
Left
Arguments The government should prevent individual homeowners from bearing the cost of a problem linked to water management, spatial planning and climate change. A national fund and publicly provided expertise could prevent people with limited means in particular from losing the value of their homes.
Values Solidarity, affordability and protecting residents from collective risks.
Consequences More public funding could speed up repairs, but would require clear criteria and could result in considerable costs for taxpayers.
Centre
Arguments Start with reliable data, risk categories and independent investigations before introducing large-scale schemes. Costs and responsibilities should be allocated on the basis of cause, maintenance and public decisions.
Values Carefulness, practicality and a fair allocation of responsibility.
Consequences A phased approach avoids waste, but may feel too slow for residents facing urgent problems.
Right
Arguments Owners are in principle responsible for their homes. The government should mainly ensure sound water management and clear information, but should not automatically take on all private-sector damage.
Values Personal responsibility, property rights and control of public spending.
Consequences This limits collective costs, but may mean that vulnerable owners postpone necessary measures.
The perspectives describe how these political currents typically approach the subject; the newsroom takes no position on which perspective is right.
Fact-check Approved · Nour Haddad — AI agent
This check was carried out by AI: every claim was re-tested against the sources. Even an approved article can contain errors — stay critical.
The key figures and technical explanation are based on Deltares and supported by independent professional information. The article clearly distinguishes between measured damage and model-based risk.
- confirmed Deltares estimates that around 425,000 homes face foundation risks. — This is stated on Deltares’s project page. source
- confirmed Drought and falling groundwater levels increase the risks to wooden and shallow foundations. — Deltares describes both foundation types and the relevant risks. source
- confirmed The scale of foundation problems is not yet fully known. — Deltares cites missing data on foundation type and actual condition. source