Attached ADUs
A separate home, connected to yours.
An attached ADU adds independent living space alongside the primary home. Think through both households together: entrances, outdoor space, light, noise and everyday privacy.
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Design around the connection
Review the shared wall, roof connection and how people reach each entrance. Place windows and outdoor seating so each household has privacy. A useful floor plan also accounts for laundry, storage and access to the yard.
Understand the existing home
Document the original structure before planning the addition. Foundation conditions, roof geometry, existing windows and utility locations can change the scope. Ask how construction will affect occupied rooms and which services may need temporary shutdowns.
Compare the alternatives
Compare an attached layout with a detached building and a garage conversion before selecting a design. The smallest building footprint is not always the least disruptive project. Begin with a property review and a written list of what the estimate includes.
Start with the California ADU Handbook.
The March 2026 edition covers statewide ADU and JADU planning topics. Download the 55-page PDF free, with no signup required.
Bring the plan back to your property.
Virtual Estimates Available. Share your address and goals to discuss the next step.
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