To make an initial assessment of the risks of hydrogen in the Dutch distribution network, a quantitative risk assessment (QRA) has been conducted. It compares the risk between the current natural gas distribution system and the future hydrogen distribution system. The total risk in the analysis consists of the risk arising from leaks in the distribution network and the risk arising from leaks in the house itself. The model simplifies the built environment in the Netherlands in order to control the number of variables and associated calculations. For this initial version, detached houses were chosen for validating the model. In addition, semi-detached houses were also used in the case study of a representative sample neighborhood. The distribution network is simplified by using a limited number of materials, pressures, and diameters. An important input parameter of the model is the failure frequency of the different components. The failure frequencies for the distribution network were determined based on historical failure reports. However, no reliable dataset for the components behind the meter (meter assembly, internal piping, and end-use appliance) could be found for the Netherlands, so values from the UK were used instead. Given the aforementioned assumptions, the model provides an approximation of the location-specific risk resulting from fires or explosions. All calculated location-specific risks in this study for both natural gas and hydrogen remain well below 1x10-6 per year, indicating a very limited risk. Based on the aforementioned failure frequencies in the dwelling, it is found that the location-specific risk for natural gas due to leaks behind the meter aligns well with the (limited) historical data. The probability of a fatal accident in the Netherlands resulting from an explosion or fire per dwelling, based on historical data, is 0.06 x 10-6, excluding cases involving intentional gas releases. Additionally, the probability of injuries is 1.1 x 10-6. The model yields respective values of 0.02 x ...