Why Dare County, NC isn't rated here
Unrated
Unlike most of the 3,144 counties on this site, Dare County, NC has nothing to show: The dominant soil here (often already-developed urban land) carries no septic-suitability interpretation from USDA - too rare a gap to guess at. A local percolation test is the only way to know.
What this number does and doesn't tell you
Two lots a mile apart in Dare County can carry different soil, even though they share one countywide rating. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Dare County: conventional vs. engineered cost
With no SSURGO rating to go on, Dare County has no county-level steer either way on system cost. Conventional systems typically run $3,000-$8,000; where the soil doesn't allow one, engineered alternatives run $10,000-$40,000. A perc test decides which range applies.
Related guides
How this rating is built, and its real limits · What to check before buying rural land on septic