The typical asking rate per listing is in the $30's per square foot per year. The Westfield region is going through a a rise in rates. In the last 3 months, the median rate went up $12 per sqft per year. That's a 56% rise in rent.
In the last 90 days, 6 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 17% of the available leases in the Westfield 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 available, so finding a space for a small business might be tough.
Even though the median size is 4,250 sqft, there are still 0 office spaces below 2,000 sqft. Most buildings in this region are around 1 stories. Most buildings in this market were built in 1950 and are Class B.