Minimizing the weight is a target that is pretty difficult. It with no doubt is possible, which has already been proved by many diverse people, who have even reduced their weight by more than 50 kilograms.
A house is a place, in which we mostly believe that there is still a lot that can be improved. Therefore, some people, who have their house mostly believe that there is a lot that is likely to be improved in this field. Nonetheless, in order to be able to make frequent developments, we also need to have an appropriate budget.