Homeowners across the San Diego area looking to expand their living space or create a rental opportunity turn to the trusted San Diego Builders at The Avalon Company. With more than three decades of experience, we specialize in designing and constructing high end accessory dwelling units that blend seamlessly with your existing property while increasing functionality and property value.

About The Avalon Comany

ADU Builders San Diego

Homeowners across the San Diego area looking to expand their living space or create a rental opportunity turn to the trusted San Diego Builders at The Avalon Company. With more than three decades of experience, we specialize in designing and constructing high end accessory dwelling units that blend seamlessly with your existing property while increasing functionality and property value.

Your Trusted San Diego ADU Contractor for Smart Living Solutions

As experienced ADU builders and custom home experts, The Avalon Company brings exceptional craftsmanship and personalized service to every project. Whether you’re envisioning a detached ADU, a garage conversion, or a compact junior ADU for extended family, our team ensures your accessory dwelling unit meets your functional needs and reflects the style of your primary residence.

We’ve completed countless ADU construction projects throughout San Diego County, from Rancho Santa Fe to coastal neighborhoods, tailoring every design to comply with local zoning regulations. Our knowledge of permitting requirements and local development standards ensures a smooth, efficient process from the initial consultation through final construction.

Why San Diego Homeowners Choose The Avalon Company

When searching for ADU builders near you, San Diego homeowners consistently choose The Avalon Company for our experience, quality, and local knowledge. We understand that every ADU project is unique, and our personalized approach helps us create backyard homes that are both beautiful and practical.

As a top ADU contractor in San Diego CA, we provide:

  1. Custom ADU floor plans designed for your lot, existing home, and lifestyle
  2. Energy efficient solutions to reduce long term operating costs
  3. Expert navigation of the permitting process and zoning compliance
  4. Full service support throughout the design, construction, and inspection phases


From modern guest houses and in-law suites to sleek prefab ADUs and cozy granny flats, we help homeowners throughout the San Diego area create compact, stylish spaces that serve a variety of purposes including family living, multigenerational housing, rental income, or home office use.

The Avalon ADU Construction Process

We make ADU development straightforward and stress free. Our construction team guides you through every step of the journey:

  1. Initial Consultation: We evaluate your property, identify the best location, and discuss your goals for the ADU unit.
  2. Design Phase: Our skilled ADU designers create floor plans that integrate naturally with your existing structure.
  3. Permitting Process: We handle the paperwork and approvals to ensure zoning compliance.
  4. Construction Phase: Our builders in San Diego bring your plans to life using quality materials and expert craftsmanship.
  5. Final Construction: We complete your new ADU with detailed finishes, energy-saving features, and seamless integration into your property.


With The Avalon Company, every ADU construction project is tailored to your space, needs, and long term goals.

Why Build an ADU in San Diego

San Diego County’s recent updates to ADU regulations make now a great time to start your own ADU project. Whether you’re converting your garage into a stylish suite, adding a detached guest house, or building a junior ADU in your backyard, there’s tremendous potential for added value and flexibility.

Top reasons San Diego homeowners invest in ADU construction services:

  1. Generate rental income with a separate, private unit
  2. House family members in a safe, comfortable environment
  3. Create in-law suites or multi-gen living spaces
  4. Boost property value with additional square foot and living options
  5. Maximize existing structures and underutilized space


From basement conversions to backyard ADU homes, The Avalon Company helps you make the most of your property.


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