The typical asking rate per listing is in the $20's per square foot per year. The Leander region is going through a an increase in rates. In the last 3 months, the median rate increased $20 per sqft per year.
Compared to the rest of the Greater Austin market, the Leander region has smaller rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 0 listings have been posted online, which means listings are probably going fast. You'll want to be prepared to make an offer immediately. About NaN% of the available space in the Leander are subleases, so you will probably need to consider the implications of signing a direct lease with the building. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,690 sqft. Most buildings in this market were built in 1968.