In the last 90 days, 33 listings have been listed, which means leases most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 27% of the listings in the Newark 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 on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 300 sqft. Most buildings in this region are around 1 floors. Most buildings in this market were built in 1979 and are Class C.