In an ABJ article by Jan Buchholz she gives examples of a few of the larger Austin office leases being signed around town. As more and more office space is leased, vacancy rates will decrease. As competition for office space heats up rent rates in Austin will continue to RISE. Average Austin office rental rates are currently $25 sf. If your a business with a lease expiration coming up within 6-18 months you might consider negotiating and locking in your office renewal rate now. Otherwise you will have no choice but to pay a higher price later on.