Most listings are in the $20's per square foot per year. The McLennan County submarket is experiencing a a boost in rates. In the last 3 months, the median rate rose $8 per sqft per year. That's a 48% rise in rent.
In the last 90 days, 10 listings have been posted online, which means office spaces are probably going fast. You'll want to be prepared to make an offer immediately. About 10% of the available leases in the McLennan County are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 1,500 sqft. Most buildings in this market are close to 2 floors. Most buildings in this region were built in 1984 and are Class A.