Compared to the rest of the Greater Austin market, the Castle Hills region has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 19 listings have been posted online, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 68% of the available leases in the Castle Hills are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 3,500 sqft, there are still 0 listings below 2,000 sqft. Most buildings in this region are close to 4 floors. Most buildings in this market were built in 1982 and are Class B.