Improve the comfort inside, from the kitchen to the bedrooms. The master bedroom should be revamped and have its own bathroom. Give the outside a new look since the materials and the openings for the most part have to be replaced.
Report of the technologist
The kitchen is expanded by using the space of the adjoining bathroom keeping only a laundry area. In addition to the master bathroom a second bathroom for the children is built on the second floor. This implies that the second floor needs to be expanded, but this will yield the new look requested.