5 Top Features in San Diego County ADUs

As accessory dwelling units (ADUs) continue to grow in popularity throughout Southern California, homeowners in San Diego County are prioritizing designs that balance lifestyle, flexibility, and long-term value. From coastal-inspired layouts to energy-efficient upgrades, customizing an ADU in San Diego County offers exciting possibilities.

Here are the top five most in-demand ADU features San Diego County homeowners are including in their designs.

1. Indoor-Outdoor Living Spaces

With San Diego’s mild climate, indoor-outdoor living is a must. Sliding glass doors, covered patios, and compact outdoor seating areas are popular ADU features. These elements create an open, airy feel while maximizing usable space. Local zoning and setback requirements vary by city, so proper planning is key.

3. Open-Concept Living Areas

Multi-use great rooms are a staple in San Diego County ADU design. Open layouts that combine the kitchen, dining, and living areas help smaller footprints feel spacious and functional — especially important for maximizing coastal and urban lots.

3. Full Kitchens and Laundry Facilities

A full kitchen and dedicated laundry remain top priorities for San Diego County ADUs. These features allow the unit to function as a completely independent living space — ideal for long-term rentals, short-term stays (where permitted), or multigenerational living. Homeowners appreciate the convenience and added value these amenities provide.

4. Smart Storage Solutions

Built-in storage helps San Diego County ADUs stay organized without sacrificing square footage. Custom cabinetry, wall-mounted shelving, and under-stair or under-bed storage solutions are commonly incorporated into modern ADU designs.

5. Energy-Efficient Features & Smart Technology

Energy efficiency is a major focus. Homeowners are choosing LED lighting, Energy Star appliances, high-efficiency HVAC systems, and smart thermostats. California solar requirements apply to most new ADU construction, making sustainability a standard feature rather than an upgrade.

Final Thoughts

Whether you’re building an ADU for rental income, family use, or added property value, understanding San Diego County ADU design trends and local regulations will help you make informed decisions. Explore our portfolio to see how these features come together in real projects.