# Office Space Calculator

If you lease office space that is too big, or too small, it can really be an expensive mistake.  To ensure that you lease the correct size space Austin Tenant Advisors created this calculator to help you accurately determine the amount of space you need.

How much is office space in Austin?

Use this tool to determine the estimated square footage needed for your office.
Instructions:Fill in the textboxes in the column “# of Rooms required” to estimate the total rentable square feet (RSF)** that your office space requires. These calculations are an estimate and should only be used as a guideline.
Description Size # of Rooms Dimensions USF Unit USF Total USF
Common Areas
Reception Area Small – 2 people 10′ x 15′ 150
Reception Area Medium – 5 people 20′ x 20′ 400
Conference Room Small – 6 people 15′ x15′ 225
Conference Room Medium-10 people 15′ x 20′ 300
Conference Room Large – 14 people 15′ x 30′ 450
Break Area Small – 6 people 10′ x 12′ 120
Break Area Large – 12 people 15′ x 20′ 300
Server Room Small 4′ x 6′ 24
Server Room Medium 10′ x 12′ 120
Storage Room Small 10′ x 12′ 120
Storage Room Large 15′ x 20′ 300
Work Room (Copy, fax, mail) Small 10′ x 12′ 120
Work Room (Copy, fax, mail) Large 15′ x 20′ 300
USF Sub Total
Offices and Cubicles
CEO/Director Office Small 15′ x 15′ 225
CEO/Director Office Large 15′ x 20′ 300
Private Offices Small 10′ x 12′ 120
Private Offices Medium 10′ x 15′ 150
Office Cubicles Small 6′ x 6′ 36
Office Cubicles Medium 6′ x 8′ 48
Office Cubicles Large 8′ x 8′ 64
USF Sub Total
Total Square Feet
X Circulation Factor 35%
Total Useable Square Feet (USF)
X Common Area Factor 15%
Total Required Rentable Square Feet (RSF)
** Landlords charge Tenants based on the number of Rentable Square Feet (“RSF”) leased. The RSF calculation starts as a total of the Usable Square Footage (“USF”), the dimensions of the actual spaces. To this USF is added a Circulation Factor, typically 25% – 35%, which is essentially the space allowing movement between the individual rooms/spaces. Landlords then add to this number a Common Area Factor (“CAF”), typically about 15% – 20%, to account for those areas shared by all tenants in a multi-tenant building (lobby, restrooms, shared hallways, etc.).