Defensible Space Permits are only required for properties above 6,400 feet in elevation. Construction of a new dwelling, the replacement of an existing dwelling, or building additions of 400 square feet or more cumulatively measured from May 21, 2002 must complete an initial inspection for a Defensible Space Permit prior to being issued a Building Permit.
A list of Certified Jefferson County Defensible Space Foresters can be found here.