Find out the address of the property you are interested in. Sometimes the property will not have a street address, so know what road the property is closest to and the street addresses of the surrounding properties. Take notes of the property's dimensions and its terrain, whether it's surrounded by fields, woods or any water sites.
Go to the appropriate town hall for the property's location. Have the information you took down available for them to see and possibly give you the name of the property owner. If they do not know, go to the County Clerk's Office where there are records of deeds.
Search the address you found on the Internet to see if there are any records of ownership. Contact a local real estate agent who will have access to property records and should be able to tell you the owner of the property.