On average, listings lease in the $20's per square foot per year. The Greater Austin region is seeing a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 5% decline in rent.
In the last 90 days, 1005 listings have come on the market, so you'll want to check back regularly for new listings. About 8% of the office spaces in the Greater Austin are subleases, so you will probably have to consider a longer term lease. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 2,500 sqft. Most buildings in this market are approximately 2 stories. Most buildings in this market were built in 1986 and are Class A.