Custom ADU Engineering & Design for Southern California

Building an Accessory Dwelling Unit (ADU) is a great investment, but it doesn’t have to be complicated. Many homeowners want to maximize their property value with a new backyard home. At the same time, General Contractors need permit-ready plans to keep their projects moving. Avila Structural Engineering provides a complete, one-stop solution for everyone. We make the entire process simple, fast, and highly efficient.

Why Choose a Licensed Structural Engineer for Your ADU?

Most drafters and designers outsource their structural calculations. This practice adds frustrating delays, hidden costs, and endless back-and-forth during city plan checks.

As a licensed Structural Engineering firm, we handle all the heavy lifting in-house. We specialize in custom ADUs. Standard pre-approved plans often fail on difficult sites. We can easily tackle hillside lots, high fire severity zones, tight property setbacks, and complex soil conditions. Your custom project is safe in our expert hands.

Our All-In-One ADU Package

First, we develop a beautiful custom design tailored to your specific lot and budget. Then, we provide the complete construction document package required for city permitting:

• Architectural Plans: Layout, aesthetics, finish materials, and strict local zoning compliance.
• Structural Plans & Calcs: Foundation, framing, and seismic anchorage. All elements are designed by a licensed S.E.
• Title 24 Energy Calculations: Full proof of compliance with California’s strict energy standards.
• Electrical/Lighting Plans: General room layouts and detailed fixture schedules.
• Permit Processing: We expertly navigate the complex city clearance and approval process for you.

For General Contractors & Architects

Stop chasing down multiple different consultants for one job. Just hand us your schematic footprint or client requirements. We will quickly hand you a permit-ready structural, architectural, and energy package. This approach saves you valuable time and keeps your construction timeline right on track.

Ready to build your new ADU?

Contact our engineering team today to determine your lot’s feasibility. You can get a customized quote for your specific ADU project right now. We are fully ready to help you build the perfect space.