Checks ~700,000 U.S. listings every week against official public-land maps and shows the ~13,600 homes and land parcels that actually touch national forest, BLM and state land. Each one is measured from its county parcel boundary: the shared edge in feet, drawn on a map, plus how much public land is behind it, elevation, road access, flood zone and wildfire hazard. Search by ZIP or state. Free, no account needed.
痛点：想买毗邻国家森林、BLM 或州有土地的乡村地产或住宅的买家，很难从海量挂牌中筛出真正与公共土地接壤的地块，只能手动比对挂牌、地籍边界和公共土地地图。
目标用户：猎人、户外爱好者、乡村地产投资者、度假屋买家，以及服务这类客群的土地经纪人。
证据：Checks ~700,000 U.S. listings every week against official public-land maps and shows the ~13,600 homes and land parcels that actually touch national forest, BLM and state land. ... Free, no account needed.
变现：免费搜索，付费提醒和高级筛选（新挂牌、边界长度、州/县订阅）；把高意向买家作为线索卖给土地经纪人或贷款机构；向经纪公司提供 B2B 数据/API 订阅；土地贷款、保险、测绘服务联盟营销。
MVP：用 PAD-US 公共土地数据 + Regrid/县地籍数据，先覆盖 3–5 个狩猎或乡村地产热门州，计算地块与公共土地的共享边界英尺数，做地图搜索 + 邮件订阅新挂牌提醒，按 $9–19/月或按线索收费验证付费。
竞品：LandWatch、Land.com、onX Hunt、RecLand、Regrid、Zillow（无接壤筛选）
摘要：Unfenced 每周扫描约 70 万条美国挂牌，筛出约 1.36 万条真正与国有林、BLM 或州有土地接壤的地块，并标注共享边界英尺数、海拔、道路、洪水与野火风险，免费且无需账号。属于细分乡村地产搜索工具，可通过线索导流和高级订阅变现；但发布仅 0 票，尚无付费意愿或收入证据，需求规模待验证。