Pre-existing non-conforming lot may be perfect for writer's retreat or a for pitching a tent or a rustic cabin. And that can be enough. Seconds from Platte Clove Road and Preserve and some of the most scenic and exciting hiking and camping around. Most likely not enough space for a traditional septic system but a Sun-Mar or Incinolet toilet may be an option here. Check with health dept and town code and you should be good to go.