The typical asking rate per listing is in the $10's per square foot per year. The Georgetown submarket is going through a decrease in rates. In the last 3 months, the median rate decreased $1 per sqft per year. That's a 3% decline in rent.
In the last 90 days, 1 listings have been made available, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 700% of the available space in the Georgetown are subleases, so you might be able to snag a great spot on a short term. 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 2,000 sqft. Most buildings in this area are around 2 stories. Most buildings in this area were built in 2006 and are Class A.