The material used to build houses lasted for almost 60 years. The life span for temporary houses is 30-40 years. Group Five trains and develops local contractors in erecting the units. A 24-30 m2 temporary house costs approximately R43 429. The material used was approved by the CSIR and the SABS. The units could withstand disasters. The structures were properly joined and there would be no need for rectification. Communities were reluctant to accept these units as they were not familiar with them.