Rainwater harvesting technology is an effective strategy to mitigate the effects of climate change. It is becoming a viable alternative for supplying water to and reducing stormwater runoff from households and businesses in urban setting. The rainwater harvesting design uses a relatively new and less explored alternative in harvesting rainwater through the use of collapsible rubber tanks (CRTs). Its versatility and transportability make it an attractive option for rainwater harvesting in an urban setting where space is limited and land is expensive.