Note: The insights in this blog are based on canibuild's fire impact data and real-world mapping.

Wildfires are an increasing challenge for urban planners, particularly in areas where cities and wildlands intersect (WUI zones). The Palisades Fire destroyed thousands of properties and taught us a lot about how zoning rules, building materials, and property characteristics impact wildfire resilience.

Beyond existing communities, construction site fire risk assessment is becoming a crucial factor in planning fire-safe urban expansion. Without proper fire mitigation strategies during new developments, construction sites could become ignition points or amplify existing fire hazards.

Building on this, let's dive into key data visualizations from the affected area to explore planning strategies to improve fire preparedness and mitigation.

1. How Zoning and Land Use Influence Fire Risk

Our analysis revealed that residential zones bore the brunt of the fire’s destruction, while commercial and institutional areas suffered fewer losses. The bar chart below illustrates the extent of fire destruction across different zoning categories:

Key Takeaways:

• Single-family residential areas (R-1, R-3) were hit the hardest, highlighting the vulnerability of traditional home construction to wildfires.

• In contrast, commercial and institutional buildings fared better, likely due to fire-resistant materials like concrete and steel and better defensible space planning.

  Recommendation:

• Moving forward, zoning policies should enforce stricter fire codes for high-risk residential areas. This includes requiring more defensible space, ember-resistant materials, and improved road access to facilitate safer and quicker evacuations.

2. Are Corner Lots More Vulnerable?

Location matters when it comes to wildfire risk. Our analysis found that corner lots were more likely to experience severe fire damage compared to interior lots.

Key Takeaways:

• Corner lots have more exposed sides, making them more susceptible to wind-driven embers and flames.

  Recommendation:

• Adding extra fire buffers around corner lots can significantly reduce risk.

• Planners should encourage fire-resistant fencing and non-combustible perimeter materials, such as stone walls instead of wooden fences.

3. The Role of Lot Size and Frontage in Fire

Does having a larger lot make a property more fire-resistant? Surprisingly, our data suggests otherwise. Lot size didn’t significantly impact the severity of fire damage.

Key Takeaways:

• Variations in lot size indicate that larger lots do not necessarily correlate with higher fire risk, though some extreme cases exist.

• Homes that sustained over 50% damage were found across all lot sizes, suggesting that structural factors play a more significant role than lot size alone.

• Frontage length doesn’t show a clear correlation with fire risk, but extreme cases (either very long or very short frontages) may pose unique exposure risks.

Recommendation:

• For larger lots, prioritize firebreaks, clearance zones, and fire-resistant landscaping (e.g., using non-flammable vegetation).

• Homes that sustained over 50% damage were found across all lot sizes, suggesting that structural factors play a more significant role than lot size alone.

• Building codes should focus more on materials and layout rather than lot size alone when addressing fire risk.

• Frontage length doesn’t show a clear correlation with fire risk, but extreme cases (either very long or very short frontages) may pose unique exposure risks.

• If large frontages exist in high-risk fire zones, ensure adequate access for firefighting vehicles and emergency exits.

• For smaller frontage lots, implement fire-resistant barriers between properties to minimize fire spread.

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4. How Building Size Affects Fire Damage

You might assume that larger buildings would be more resilient to fire, but our data tells a different story. Our scatter plot analysis shows that both large and small buildings experienced similar levels of destruction.

Some properties with fire damage had significantly larger buildings, suggesting that outliers exist—either high-value properties are being affected, or larger structures face unique risk factors.

Key Takeaways:

• Larger buildings show more variation in fire damage, with some extreme outliers.

• The average size of destroyed buildings (>50% damage) is approximately 23.5m², but some exceed 400m².

Recommendation:

• Buildings above a certain size threshold (e.g., >30m²) should implement enhanced fire prevention measures, such as additional fire-resistant materials, sprinkler systems, and defensible space around structures.

• Larger properties should undergo risk assessments to identify vulnerabilities and adjust insurance coverage accordingly.

5. Integrating These Findings into Fire-Smart Urban Planning

Wildfires aren’t going away anytime soon. So, how do we build communities that can withstand them?

Here are some practical steps that can make a real difference—not just for new developments, but also for existing neighborhoods seeking to enhance wildfire resilience.

Actionable Recommendations:

• Stronger zoning laws: Limit new development in high-risk fire zones and mandate fire-resistant building designs for all structures.

• Improved lot design standards: Require wider defensible spaces around homes, especially on corner lots, and promote stone firebreaks instead of flammable fencing.

• Stricter building codes: Enforce fire-resistant materials such as Class A roofs, ember-proof vents, and stucco or metal exteriors for homes in fire-prone areas.

• Community-wide fire mitigation: Establish neighborhood fire buffers, enforce regular brush clearance, and improve evacuation routes.

• Data-driven risk modeling: Use zoning, building size, and fire history to create predictive models that identify high-risk areas and inform smarter wildfire mitigation strategies.

Wrapping Up

The Palisades Fire provided crucial insights into how zoning, lot placement, and building materials influence wildfire damage. By applying these lessons, urban planners can reshape land-use policies, strengthen building codes, and enhance fire safety regulations.

Future developments in fire-prone regions must strike a balance between housing demand and safety, ensuring that communities are designed to withstand future wildfire threats. By leveraging a data-driven approach backed by technology, policymakers can create sustainable, fire-resilient neighborhoods—an essential priority in the era of climate-driven wildfires.