There are currently 6 properties for sale in Glenview of one-third acre; one is vacant land and the others have teardown houses on them. The average price is $403,783; the median price is $374,900. No lots of that size have sold in the past 12 months--at least ones that have been listed as "land." Generally, home and land prices increase the farther east you go in Glenview, and there's a section of far east Glenview that's in New Trier High School District, rather than Glenbrook South High School, which serves most of the village.
Let me know if you'd like me to email you the currently available properties.
Baird & Warner, Winnetka