Here is a great article from Work Design Magazine on how to design your work space based upon the tasks being performed, not the age of the occupants.

One of the most interesting takeaways that came out of analyzing these Workplace Archetypes was that they crossed lines of age, tenure, and title throughout the organization. Instead, what differentiated the Workplace Archetypes were the roles, responsibilities, and tasks of individuals and departments. 

Meredith McCarthy