Climate Change Armor is a collection of adaptive flood attenuation mechanisms for protecting newly designed communities from flood events and the eventual impacts of sea level rise. League City, TX is used as an application site. NOAA predicts that sea levels will increase and storm surge will become more frequent along the Texas coast. In the Gulf Coast, sea level projects to rise up to 6.29 feet by 2100. The Climate Change Armor Toolkit comprises both structural and non-structural mechanisms, which are either engineered to block and control heavy floods or rely on natural systems and green infrastructure to attenuate flood waters from frequent storms or hazard flood events. With the application of the Armor Toolkit, 221,921 ft3 of runoff can be captured, nearly 2,400 new residents are protected, over 3,000 jobs are created, $23 million in physical flood damage can be avoided, and approximately $1.3 billion can be generated in the life cycle benefits of the newly designed community by 2100.