Keep in mind, using the Wetlands Mapper and/or the Web Soil Survey is NOT the same thing as hiring a wetlands consultant and/or having the USACE do a delineation on your property (so realize, there are no guarantees with this approach). However, if you're just looking for an educated guess, both of these online tools can be used as a starting point.
Market for Land is Less Active – The market for existing homes is almost always more vibrant than the land market. There simply are fewer numbers of buyers for vacant land than consumers looking for homes. Start marketing a new home listing and a new lot listing when both are desirable and priced well, and you generally can expect fewer contacts about the new lot listing.