Mountains
Park County says the septic permit comes before the building permit
A Porch Note from Colorado Porch — plain-English local details for all 64 Colorado counties.
On rural Park County land, septic is not a finishing detail you sort out after the house is drawn. The order runs the other way: a septic system permit must be obtained before you can apply for a building permit. The wastewater plan leads, and the house follows it.
There is real logic to that sequence. A site can look easy on a map and still be hard underground, because the septic design has to work with soils, slope, wells, wetlands, drainage, and the size of the home you mean to build. When the septic answer shifts, the house location or the whole project plan can shift with it.
This is an ordinary question across South Park and the mountain parcels, where lots vary enormously. It comes up around Bailey, Fairplay, Alma, Como, Hartsel, Lake George, Guffey, and the rural subdivisions in between, each with its own soils and grade.
So the homework lands before closing or before you order building plans. Environmental Health can tell you the septic permit history on a parcel and what the county still needs there, and from that the Building Department can lay out the building permit path. Done in that order, the system fits the land instead of fighting it.
Sources
Official or primary sources used for this note. Local details can change, so confirm before acting.