On average, listings lease in the $30's per square foot per year. The Brentwood submarket is seeing a decline in rates. In the last 3 months, the median rate fell $1 per sqft per year. That's a 4% decrease in rent.
In the last 90 days, 7 listings have been made available, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 14% of the listings 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 available, so finding a space for a small business might be tough.
Even though the median size is 5,980 sqft, there are still 0 leases below 2,000 sqft. Most buildings in this area are approximately 3 stories. Most buildings in this market were built in 1992 and are Class A.