On average, listings lease in the $40's per square foot per year. The Downtown Berkeley region is experiencing a a boost in rates. In the last 3 months, the median rate increased $1 per sqft per year. That's a 2% increase in rent.
Compared to the rest of the East Bay market, the Downtown Berkeley region has more expensive rates, and you'll have to negotiate above asking rent to be in this hot region.
In the last 90 days, 20 listings have been listed, which means new availabilities are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 10% of the office spaces in the Downtown Berkeley are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,700 sqft. Most buildings in this region are around 3 floors. Most buildings in this market were built in 1983 and are Class B.
Not much of the real estate is used for commercial space, so it might be hard to find office space. Education is the dominant industry in this market. Commute by walking is the most popular way to get to work amongst Downtown Berkeley folk. Commuting between 30 and 45 minutes a day is the norm for those who opt to reside in this part of town.