Detached ADU

A standalone structure separate from the main house. Offers maximum privacy and design flexibility. Perfect for rental units or guest houses.

150-1,200 sq ft
Backyard

Advantages

  • Maximum privacy for both occupants and main home residents
  • Complete design freedom and customization options
  • Can be positioned optimally on property for views or sun exposure
  • No disruption to main house during construction
  • Potential for higher rental income compared to other ADU types

Attached ADU

Connected to the primary residence, but with separate entrance. Cost-effective solution utilizing existing structural elements while providing privacy.

150-1,200 sq ft
Attached to main house

Advantages

  • Lower construction costs by sharing walls with existing structure
  • Easier utility connections to existing systems
  • Maximizes usable yard space
  • Potential for internal connecting door (if desired)
  • Often simpler permitting process in Goleta

Conversion ADU

Transform existing spaces like garages, basements, or attics into living areas. Often the most affordable option with minimal exterior changes.

Varies by space
Converting existing space

Advantages

  • Typically the most cost-effective ADU option
  • Faster construction timeline than new builds
  • Repurposes underutilized space
  • Minimal changes to property appearance
  • May qualify for streamlined permitting in Goleta

Junior ADU (JADU)

Small units created within the walls of the primary residence. Typically includes a private bathroom but may share kitchen facilities with the main house.

Up to 500 sq ft
Within main house

Advantages

  • Lowest cost ADU option
  • No additional footprint on your property
  • Can often be created from a single bedroom conversion
  • Ideal for family members or caregivers
  • More permissive regulations in Goleta

Prefab/Modular ADU

Factory-built units delivered and installed on your property. Offers quicker construction timelines and predictable costs.

150-1,200 sq ft
Backyard

Advantages

  • Predictable costs with fewer construction surprises
  • Significantly reduced on-site construction time
  • Factory quality control and precision
  • Many sustainable and energy-efficient options
  • Modern designs with customizable features

Two-Story ADU

Maximize your square footage with less ground coverage. Ideal for properties with limited yard space but still wanting a larger ADU.

Up to 1,200 sq ft
Smaller footprint

Advantages

  • Maximizes living space while minimizing footprint
  • Preserves more yard and outdoor space
  • Can provide better views from second floor
  • Potential for separation of living spaces (bedroom upstairs, living downstairs)
  • Can work well on sloped properties