Natural disasters, such as earthquake, devastate cities, communities, and families in seismic regions. People, who have endured these catastrophes, have often nowhere to go and they are often guested into shelters or substandard housing. These people leave in conditions that are often far from ideal and what is initially presented as a housing solution for a week or two can quickly turn into a housing for several months or more. This study deal with a design of passive house as post disaster shelter which is developed through the modelling and simulation of energy consumption, thermal performance and net carbon emissions. The temporary housing is designed for the warm Mediterranean climate (Csa), but the method can be attuned to other climates or geographical contexts. The aim of this study is to trace a guideline for shelter with a low environmental impact that could be built quickly, easily and provides a comfortable living environment reducing the need for active systems, such as electricity, air conditioning, and heating through passive design also over long time after the disaster