I checked our MLS for you there is no current land listing in the Ulster County MLS on those roads. Currently there are 20 land listings in New Paltz on ther Ulster County MLS ranging from $49,000 for .94 acres to 979,000 for 42.7 acres. That is not to say there is not land that is being sold by an owner, in another MLS or an office exclusive. Did you see a sign?
If you would like me to research it further give me a call. Good Luck!