A Perc Test (also known as “Perk Test”, and more formally known as a “Percolation Test“), is a soil evaluation that tests the rate at which water drains through the soil. If a property doesn't have easy access to the local sewer system, a perc test is required to determine whether a septic system (the alternative to a sewer) can be installed on the property.
The best place to list free classified ads these days is craigslist.org and backpage.com These are simple no-nonsense interface sites where you can list the property price, description and add images. The big drawback is you have to continue to edit and update your listing to stay on top of the listing system otherwise it will be more difficult for buyers to find you. You can learn more about how to do this through basic Google searches.
Another benefit of subdividing for homeowners who would like to liquidate some of their real estate without having to sell the farm (literally), is that they may be able to both cash in on a portion of vacant land and stay put on the rest. Holding onto some of their land can give that property time to increase in value as the surrounding subdivided land becomes developed.
After identifying your likely buyers, try to think like them so you can focus your message to convey what they need to know about your property. Have information ready about schools, shopping and other nearby amenities. For developable land you can be prepared with zoning information and insight from local authorities about the location and capacity of water and sewer service. Each property is different, so customize your information for your situation and your targeted buyers.