What is Defensible Space?
Defensible space is the area between a house and an oncoming wildfire where vegetation has been modified to reduce the wildfire threat. Defensible space is simply a homeowner’s properly maintained backyard. Use the information below as a guide. For more advice on defensible space, visit Living with Fire in the Lake Tahoe Basin or refer to the Lake Tahoe Fire Adapted Communities booklet.
Refer to the Defensible Space Inspection form for more detailed information that will be covered during the evaluation. Another important component to creating effective defensible space is to ensure the built environment, as well as the non-combustible area of your home, is free of fire hazards. Please refer to the Home Vulnerability form that may be included if needed, during the defensible space evaluation.
Step 1- Know Your Distance
The recommended distance of defensible space is different for all homes. The types of vegetation and terrain are key factors when deciding how far out to extend the Defensible Space Zone. Most properties need 100-200 feet of defensible space.
Step 2- Remove the Dead
Within the Defensible Space Zone, remove all dead vegetation including dying trees, shrubs, grass, weeds, fallen branches, thick accumulations of needles and leaves, etc. Remove fallen needles and leaves within 30 feet from the house every spring, and don’t allow a depth of more than 3 inches of depth beyond 30 feet from the house.
Step 3- Create Separation
Areas of dense vegetation pose significant wildfire threats. Thin dense tree and shrub stands to allow for more separation between continuous fuels.
Step 4- Remove Ladder Fuels
Vegetation allowing fire to climb up from the forest floor to the canopy, are known as ladder fuels. Smaller vegetation such as shrubs and young trees should be cleared away from beneath larger trees.
Step 5- Lean, Clean, and Green
Within 30 feet of your home, remove fuels that ignite easily such as dead shrubs and trees, dried grass, pine needles, firewood, etc. Create a 5-foot noncombustible zone around the perimeter of your home, and keep your landscaping well-maintained.
Please reference our Defensible Space Evaluation form to review items that need to be addressed prior to any tree marking. Contact information for tree removal and defensible space specialists can be found here: 2016 Tree Removal and Defensible Space Contractor List.
A defensible space inspection is required for all projects requiring a Washoe County Building Permit. Refer to NLTFPD Defensible Space Requirements for Construction Projects 2020 and the Building and Permitting Guidelines Updated Feb 28 2019 prior to submitting plans for review.