Most listings are in the $20's per square foot per year. The West Berkeley region is going through a decrease in rates. In the last 3 months, the median rate fell $10 per sqft per year. That's a 27% decline in rent.
Compared to the rest of the East Bay market, the West Berkeley region has lower rates, so you should have no trouble finding a great deal in this undervalued region.
In the last 90 days, 15 listings have been listed, which means new availabilities most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 7% of the available space in the West Berkeley 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 1,190 sqft. Most buildings in this area are around 2 floors. Most buildings in this market were built in 1961 and are Class B.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Agriculture is the dominant industry in this region. Commute by walking is the most popular way to get to work amongst West Berkeley residents. Commuting around 10 minutes a day is the norm for those who opt to reside in this part of town.