On average, listings lease in the $20's per square foot per year. The Antioch submarket is seeing a a rise in rates. In the last 3 months, the median rate went up $3 per sqft per year. That's a 13% rise in rent.
Compared to the rest of the East Bay market, the Antioch submarket has lower rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 25 listings have come on the market, which means office spaces might be leasing quickly. You'll want to be prepared to make an offer immediately. 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 1,910 sqft. Most properties in this region are approximately 1 floors. Most buildings in this region were built in 1989 and are Class C.