After a disaster, humanitarian agencies engaging in post-disaster housing reconstruction confront a number of key questions. What kind of housing should be provided: temporary, semi-temporary or permanent housing? Should they offer financial, material and/or technical support? Should they bring in ready-made shelters, or should they involve disaster-affected people in construction? What housing technologies should be promoted or adapted? Should new materials and building techniques be introduced, or should projects build upon locally available knowledge and recourses? Should agencies support self-help housing reconstruction or engage a professional construction company?