The typical asking rate per listing is in the $10's per square foot per year. The Pasadena region is seeing a an increase in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 4% increase in rent.
Compared to the rest of the Houston Metro market, the Pasadena submarket has less expensive rates, so you should have no trouble finding a great deal in this discounted region.
In the last 90 days, 37 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to make an offer immediately. About 3% of the listings in the Pasadena are subleases, so you will probably have to focus your search on direct office leases. 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 1,440 sqft. Most buildings in this region are approximately 2 stories. Most buildings in this area were built in 1988 and are Class B.