The typical asking rate per listing is in the $30's per square foot per year. The Brentwood submarket is going through a decline in rates. In the last 3 months, the median rate decreased $3 per sqft per year. That's a 7% decrease in rent.
In the last 90 days, 13 listings have been posted online, which means new availabilities might be leasing quickly. You'll want to be prepared to make an offer immediately. About 15% of the available space in the Brentwood 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 posted, so finding a space for a small business might be tough.
Even though the median size is 5,660 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are around 3 stories. Most buildings in this area were built in 1992 and are Class A.