Bedono, Coastal Java, has been witnessed as a real climate refugee in Indonesia. While the sea level rise becomes serious, migrating and repairing habitation will be impossible as the factors of economy and soaring occupation already "suffocate" them. Despite giving up, they have practiced hoarding abandoned materials to fulfill their tertiary needs. It is apparent that hoarding defines a bigger potential survival scheme. Starting with a typical 36-square-meter house, a new computational methodology was introduced to gain capital efficiency by leveraging hoarded material cycle effectivity and minimizing carbon usage. In a nutshell, the selected hoarded materials can save up to 40% in cost and retrofit each family’s gaps in material needs. One man’s garbage is the next neighbor’s treasure, and by constructing them together, they would live sustainably on top of the declining situation.