Floods and storms cause billions of dollars in damage each year and negatively affect the mental health of people impacted by them. While the mental health effects are well known by public health professionals, they are not considered by engineers and planners who develop projects to reduce flood risk. Instead, projects are selected based on the dollar value of damage they will prevent, which is primarily calculated by predicting damage to buildings. The purpose of our study was to review all published research on the mental health impacts of floods and summarize the results in a format that can help planners incorporate that information into flood risk reduction projects. We reviewed 3846 papers and identified 25 which included information needed to answer our research question: “to what extent does home damage affect mental health after floods?”. These studies reported results from a total of 20,728 people and showed that, overall, people whose homes are damaged are 1.3 times more likely to have depression and 2.7 times more likely to have PTSD than people whose homes are not damaged. This information will help planners use tools they already have to estimate mental health impacts of floods they are working to prevent.