705 sq ft
3 Bed
2 Bath
3-Bedroom ADU Floor Plans for California Homes
A 3-bedroom ADU is an ideal solution for California homeowners who want to add spacious, flexible living areas, boost property value, or create rental income — all while ensuring compliance with California’s strict zoning and building codes. Whether for multigenerational living, guest housing, or long-term rentals, our 3-bedroom ADU floor plans offer privacy, comfort, and smart functionality.
We specialize in efficient, permit-ready layouts ranging from approximately 900 to 1200 sq ft — optimized for California lots including urban yards and detached builds.
Smart and Spacious Designs
From cozy 900 sq ft units to larger 1,200 sq ft homes, our plans maximize living space with well-planned layouts featuring private bedrooms, full kitchens, multiple bathrooms, and generous living areas.
Popular Sizes:
- 900–1000 sq ft: Compact 3-bedroom ADUs perfect for smaller lots or budget-conscious projects.
- 1,000–1200 sq ft: Balanced designs with room for spacious living, storage, and multiple baths.
Types of 3-Bedroom ADUs for California Properties
We create 3-bedroom ADUs suited for various property types and goals:
- Detached ADUs: Standalone units offering complete privacy and separate entrances, great for rentals or guest homes.
- Garage conversions: More commonly suited for 1- and 2-bedroom ADUs, but with expanded square footage or combined with a second-story addition, they can be an option for 3-bedroom units.
- Second-Story ADUs: Maximize space on smaller lots with elevated units compliant with California height and setback requirements.
Built to Meet California’s Strict Standards
Our 3-bedroom ADU floor plans fully comply with California building codes, including Title 24 energy efficiency regulations. We ensure every plan is permit-ready and tailored for local jurisdictions like Los Angeles, San Diego, and San Jose.
We provide comprehensive support including:
- Detailed schematic and construction drawings.
- Title 24 energy compliance documentation.
- Site-fit analysis and engineering coordination.
If you’re unsure which 3-bedroom ADU design suits your property, Ataman Studio offers free consultations. We’ll help you choose the best floor plan, assess your lot’s potential, and customize a design that fits your lifestyle and budget.
Build a California-compliant, spacious 3-bedroom ADU that enhances your property value and meets your family’s needs.