Most listings are in the $20's per square foot per year. The Richmond region is experiencing a a boost in rates. In the last 3 months, the median rate increased $6 per sqft per year. That's a 30% increase in rent.
Compared to the rest of the East Bay market, the Richmond region has lower rates, so you should have no trouble finding a great deal in this discounted submarket.
In the last 90 days, 14 listings have been made available, which means office spaces are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 14% of the available leases in the Richmond are subleases, so you might be able to sign a shorter term by taking over a previous lease. 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 2,810 sqft, there are still 0 new availabilities below 2,000 sqft. Most properties in this market are around 1 stories. Most buildings in this region were built in 1987 and are Class A.