How Many Square Feet Do I Need?

Rules of Thumb 

The general rule is to allow 185 to 250 usable square feet per person of office space depending upon the type and style of the business which you are operating.  See our square footage calculator on our home page to determine which criteria your office falls under. It is also important to consider your special needs such as extra-large conference rooms or storage requirement. The following standards can be used to help estimate the amount of usable office space is required for your business.

  • President' s office or Chairman of the Board
    300 to 400 sq. ft. (4 to 5 windows in length)
  • Vice-President' s Office
    200 to 300 sq. ft. (3 to 4 windows in length)
  • Executive' s Office
    150 to 200 sq. ft. (2 windows in length)
  • Partitioned Open Space
    Clerical Supervisor or Manager 80 to 110 sq. ft.
  • Open Space
    Clerical or Secretary 60 to 110 sq. ft.
  • Conference Rooms
    15 sq. ft. per person: theater style
    25 to 30 sq. ft. per person: conference seating
  • Mail Room
    8 to 9 ft. wide with 30" counters on either side. Length depends upon amount of usage  
  • Reception Area
    125 to 200 sq. ft. Receptionist and 2 - 4 people in waiting
    200 to 300 sq. ft. Receptionist and 6 - 8 people in waiting
  • File Rooms
    7 sq. ft. per file with a 3' to 4' aisle width
  • Lunch Room
    15 sq. ft. per person, not including kitchen.  Kitchen should be 1/3 to 1/2 of seating area