You have to check the history of the land's subdivision that created your house lot. The paper road may have been accepted by the Town. If it was then the Town needs to do a road vacation, where they vacate ownership to the abuttors. Thereby transferring the title to that piece of land equally to each abuttor. If the Town didn't accept that land you have to do a title search to find the owner and purchase the land from them. This isn't that uncommon, any Municipal or Land Use lawyer could do it for you. Most surveyors are familiar with road vacations too.