As heavy rains hit LA County, Addition Building Design, Inc. wants to ensure that homeowners, builders, and designers stay informed about the risks of mudslides—especially in hillside and wildfire-affected areas. Here’s what you need to know:

1. Burn Scars and Hillside Properties Are at High Risk

Properties near burn scars from recent wildfires or built on steep slopes are significantly more vulnerable to mudslides and debris flows during intense rainfall. Soil in these areas is often loose and water-repellent.

Design Tip:
Incorporate proper drainage solutions, retaining walls, and slope stabilization methods when working on projects in hillside regions.

2. Early Warning Signs Matter

Be aware of ground movement indicators like:

• Cracks in foundations, walls, or driveways
• Doors and windows sticking suddenly
• Unusual sounds (e.g., rumbling, trees cracking)

Design Consideration:
Regularly assess soil conditions during and after construction. Educate clients about these warning signs as part of your project handover.

3. Evacuation Orders Can Come Fast

Specific neighborhoods may receive mandatory evacuation orders with little notice. Stay updated through LA County Emergency Services and apps like Ready LA County.

Advice for Clients:
Encourage clients to create an evacuation plan and keep essential documents and valuables easily accessible.

4. Drainage Systems Are Your First Line of Defense

Blocked or poorly designed drainage systems significantly increase the risk of flooding and erosion, which can trigger mudslides.

Design Priority:
Prioritize effective drainage in every project:

• Clear gutters and downspouts regularly.
• Use French drains, swales, or bioswales in landscaping.
• Direct runoff away from the home’s foundation and slopes.

5. Retaining Walls & Reinforcements Save Structures

Properly engineered retaining walls can prevent slope failures, but poorly built ones may collapse under heavy rain pressure.

Construction Insight:
Work with geotechnical engineers when designing retaining walls or building on slopes. Reinforce hillside foundations and consult experts when in doubt.

Final Safety Reminder from Addition Building Design, Inc.
Mudslides can develop rapidly, especially after heavy rain. Prioritize safety, stay informed, and always build with resilience in mind.

Would you like help drafting a more formal client safety advisory or perhaps tips for integrating flood and erosion control into your design packages?