A small office typically ranges from 500 to 5,000 square feet and should meet the needs of its occupants. The optimal square footage per employee depends on the type of work, ranging from 60-125 sq ft for open-plan layouts to 200-400 sq ft for private offices.

The smallest workspaces are most often cubbies. Cubbies are small rooms with a minimum area of 70 square feet, big enough to house an office desk, a cabinet, and a chair. Most small offices will be square rooms 5 by 5 feet in dimension, while bigger ones can extend to 8 by 8 feet.

The typical size range is 1000 square feet (100 m²) and less for a small office floor plan. One way to get a rough estimate of your best floor plan size range is to multiply the number of workers by a particular space allocation. The allocation per person for an office layout should be about 100 sq ft (about 10 m²).

Small-sized home office can range from 30 to 50 square feet.A small home office size is usually 30 to 50 square feet, which is just enough for a modest single desk and chair.

Small office: 100-150 square feet Medium office: 150-250 square feet Large office: 250-400 square feet Executive office: 400+ square feet