Type 01
Detached ADU
A detached ADU is a separate structure from the main home, offering the highest level of privacy and flexibility.
- Ideal for backyard development
- Strong privacy and perceived value
- Clear separation from the main residence
ADU Types
Types of ADUs in Orange County
ADUs in Orange County come in several forms, each with different design, construction, and permitting considerations. Choosing the right type depends on your property, goals, and how the space will be used.
Type 02
Attached ADU
An attached ADU is built as an addition to the primary residence, creating a separate living space within the same structure.
- Efficient use of existing building mass
- Can preserve more open yard area
- Requires thoughtful integration with the home
Type 03
Garage Conversion
A garage conversion transforms an existing garage into a livable unit and is often one of the most efficient ways to add an ADU.
- Adaptive reuse of existing square footage
- Potentially efficient path to a new dwelling unit
- Requires structural and utility upgrades
Type 04
Junior ADU (JADU)
A junior ADU is a smaller unit created within the existing home, typically including a kitchenette and shared access.
- Compact planning within the primary residence
- Works within the existing footprint
- Useful for family support and flexible occupancy
Choosing the right approach
Different ADU types create different opportunities.
Each ADU type requires a different approach to design, structural coordination, and permitting. Selecting the right type early can significantly impact cost, timeline, and overall project success.
Orange County consultation
Not sure which ADU type is right for your property?
We help homeowners evaluate options and develop permit-ready ADU designs aligned with their property and long-term goals.
Helpful ADU resources
Choose the right ADU type
The best ADU type depends on lot conditions, budget, privacy needs, timeline, and whether the space is intended for family, guests, or rental use.