Value of Lot in South Slope?

Trying to figure out how much a vacant, flat 12×100 lot is worth in South Park Slope between 5th and 7th Aves. I realize this is a thin lot and can’t find easy ways to appraise it. Any ideas on how to go about finding a reasonable value? Or feel free to throw out a number of your own! Gimme one of those widgets!

By yanks21 |