In the last 90 days, 2607 listings have come on the market, so you'll want to check back regularly for new listings. About 2% of the available space in the Harris County are subleases, so you will probably have to consider a longer term 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 1,020 sqft. Most buildings in this market are close to 3 floors. Most buildings in this area were built in 1982 and are Class B.