Most listings are in the $20's per square foot per year. The Harris County submarket is going through a decrease in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 3% decrease in rent.
In the last 90 days, 1777 listings have been posted online, so you'll want to check back regularly for new listings. About 11% of the available leases in the Harris County 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 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 1,900 sqft. Most buildings in this market are approximately 3 stories. Most buildings in this region were built in 1982 and are Class B.