On average, listings lease in the $30's per square foot per year. The Syosset submarket is going through a a boost in rates. In the last 3 months, the median rate rose $34 per sqft per year.
In the last 90 days, 8 listings have come on the market, which means listings might be going fast. You'll want to be prepared to make an offer immediately. About 138% of the office spaces in the Syosset 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 1,970 sqft. Most buildings in this market are around 2 stories. Most buildings in this region were built in 1976 and are Class C.