On average, listings lease in the $10's per square foot per year. The Beaumont submarket is experiencing a decline in rates. In the last 3 months, the median rate fell $3 per sqft per year. That's a 14% decline in rent.
In the last 90 days, 32 listings have been made available, which means new availabilities are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the available space in the Beaumont are subleases, so you will probably need to consider the implications of signing a direct lease with the building. 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 2,490 sqft. Most properties in this market are approximately 2 stories. Most buildings in this area were built in 1982 and are Class B.