The typical asking rate per listing is in the $20's per square foot per year. The Lake Ronkonkoma region is experiencing a a rise in rates. In the last 3 months, the median rate rose $8 per sqft per year. That's a 38% rise in rent.
In the last 90 days, 3 listings have come on the market, which means leases are probably going fast. You'll want to be prepared to tour spaces as quick as possible. 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 1,200 sqft. Most buildings in this market are around 2 floors.