The typical asking rate per listing is in the $30's per square foot per year. The Newark submarket is seeing a an increase in rates. In the last 3 months, the median rate increased $39 per sqft per year.
Compared to the rest of the East Bay market, the Newark region has lower rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 24 listings have come on the market, which means new listings are probably leasing quickly. You'll want to be prepared to make an offer immediately. About 29% of the available space in the Newark 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.
The standard measurement for office space in this area is around 1,700 sqft. Most buildings in this region are close to 1 floors. Most buildings in this region were built in 1996 and are Class A.