Most listings are in the $20's per square foot per year. The Rockaway region is seeing a a rise in rates. In the last 3 months, the median rate rose $28 per sqft per year.
In the last 90 days, 1 listings have been posted online, which means new availabilities most likley are going fast. You'll want to be prepared to make an offer immediately. 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 1,200 sqft. Most properties in this market are close to 2 stories.