On average, listings lease in the $20's per square foot per year. The Brazoria County region is going through a an increase in rates. In the last 3 months, the median rate increased $28 per sqft per year.
In the last 90 days, 15 listings have been listed, which means office spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 47% of the office spaces in the Brazoria County are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,710 sqft. Most buildings in this area are close to 1 floors. Most buildings in this market were built in 1999 and are Class A.