A Non-Existent Subsidy for a Non-Existent Problem
To be clear and direct, there are no government subsidies or grants available in the Netherlands for radon mitigation in homes. The simple reason for this is that radon gas (radongas) is not considered a significant public health issue or a widespread problem in the Dutch housing stock. While radon is a serious concern in other parts of the world with different geological conditions, the soil composition and building practices in the Netherlands mean that indoor radon concentrations are naturally very low and rarely approach levels that would require intervention. Therefore, the government has no policies, programs, or financial incentives related to radon testing or mitigation. For a tenant, this is one environmental concern they can safely cross off their list.
Why Radon Isn't a Dutch Concern
The low risk of radon in the Netherlands is due to a combination of factors. Geology: Radon is a radioactive gas that is naturally released from the decay of uranium in rocks and soils. The soils in the Netherlands, being predominantly clay, peat, and sand from river deltas, have a very low concentration of uranium-bearing minerals compared to regions with granite or shale bedrock. Building Standards: The Dutch Bouwbesluit (Building Decree) has, for decades, mandated specific ventilation requirements for all new homes. Modern Dutch homes are built to be airtight for energy efficiency, but this is always coupled with mechanical ventilation systems that ensure a constant exchange of fresh air, preventing the buildup of any indoor air pollutants, including the minimal amounts of radon that might be present. This combination of favorable geology and strict building codes means that specific radon mitigation systems, common in other countries, are entirely unnecessary here.
What This Means for Tenants
For a tenant, especially one arriving from a country where radon is a known issue, this is good news. You do not need to worry about testing your rental apartment for radon or asking your landlord about mitigation systems. Landlords have no obligations regarding radon because it is not recognized as a risk. The focus on indoor air quality in the Netherlands is overwhelmingly directed towards ensuring proper ventilation to prevent issues that are far more common and immediate, such as mold (schimmel) caused by condensation and humidity. Ensuring your apartment's ventilation system is clean and functioning correctly is a far more relevant and important health and safety concern for a Dutch renter than the theoretical risk of radon.