On average, listings lease in the $20's per square foot per year. The San Leandro region is experiencing a a rise in rates. In the last 3 months, the median rate went up $4 per sqft per year. That's a 20% increase in rent.
Compared to the rest of the East Bay market, the San Leandro submarket has lower rates, so you should have no trouble finding a great deal in this depreciated submarket.
In the last 90 days, 37 listings have been posted online, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,610 sqft. Most properties in this region are approximately 1 stories. Most buildings in this market were built in 1973 and are Class B.