Defensible space thinning guidelines:
1-percent to 20-percent slopes =
Brush/shrubs 75' from structure; 3X height separation distance between vegetation.
Trees 75' from structure; 10-foot crown separation distance between trees.
Grass 30' from structure; mow dead & dry grass to 6 inches or less in height.
21-percent to 40-percent slopes =
Brush/shrubs 150' from structure; 4X height separation distance between vegetation.
Trees 150' from structure; 20-foot crown separation distance between trees.
Grass 50' from structure; mow dead & dry grass to 6 inches or less in height.
Greater than 40-percent slopes =
Brush/shrubs 200' from structure; 6X height separation distance between vegetation.
Trees 200' from structure; 30-foot crown separation distance between trees.
Grass 75' from structure; mow dead & dry grass to 6 inches or less in height