On average, listings lease in the $10's per square foot per year. The Richmond region is experiencing a decline in rates. In the last 3 months, the median rate decreased $14 per sqft per year. That's a 51% decline in rent.
Compared to the rest of the East Bay market, the Richmond region has less expensive rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 14 listings have come on the market, which means new listings most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 107% of the listings in the Richmond 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 2,810 sqft, there are still 0 leases below 2,000 sqft. Most properties in this market are approximately 1 stories. Most buildings in this area were built in 1987 and are Class A.