Most listings are in the $20's per square foot per year. The Hauppauge submarket is seeing a a boost in rates. In the last 3 months, the median rate increased $3 per sqft per year. That's a 13% rise in rent.
In the last 90 days, 31 listings have been listed, which means leases are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About 3% of the listings in the Hauppauge are subleases, so you will probably need to sign a longer term lease with the landlord directly. 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 2,010 sqft. Most properties in this region are approximately 1 stories. Most buildings in this area were built in 1986 and are Class B.