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Detached ADU Construction in Los Angeles

A detached ADU is a complete secondary home in a separate building on the same property as the primary residence. It offers the strongest physical separation and design flexibility, while requiring careful planning for placement, access, utilities, privacy, outdoor space, and construction logistics.

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Detached ADUs by ADU Los Angeles

At a glance

Detached ADUs

Best for
Privacy and independent living
Major decisions
Placement, access, utilities, layout
Project type
Ground-up construction
Common uses
Family, rental, flexible living

Direct answer

What this service includes

A detached ADU is a complete secondary home in a separate building on the same property as the primary residence. It offers the strongest physical separation and design flexibility, while requiring careful planning for placement, access, utilities, privacy, outdoor space, and construction logistics.

Place the ADU, not just the footprint

The location affects privacy, yard use, construction access, utility length, windows, and the relationship between the two homes. We study those connections before locking the plan.

A complete home in a compact envelope

Detached units can support studios, one-bedroom plans, and larger layouts where allowed. The goal is a clear, comfortable home rather than a reduced version of a conventional floor plan.

  • Independent entry and address strategy
  • Useful indoor-outdoor relationship
  • Efficient mechanical and storage planning
  • Exterior design compatible with the site

Coordinate construction on an occupied property

Staging, deliveries, temporary protection, working hours, and access all matter when the primary home remains occupied. We plan the field work with that daily reality in mind.

Planning guidance

Cost and timeline depend on the property.

We do not advertise a fixed price or deadline before understanding the site and scope. These are the factors that usually deserve the earliest attention.

Primary cost influences

  • Foundation and grading
  • Site and equipment access
  • Utility trenching and capacity
  • Building size and structural design
  • Interior and exterior finish level

Timeline guidance

Detached ADUs include design, agency review, site preparation, and full construction. We create a project-specific sequence after feasibility and do not advertise a one-size-fits-all completion date.

Questions about detached adus

Useful answers before you commit.

See the complete ADU FAQ →
How private can a detached ADU be?+

Placement, entry direction, fencing, landscaping, window locations, and outdoor space can create meaningful separation while keeping both homes functional.

Can a detached ADU have two bedrooms?+

Potential bedroom count depends on the permitted size, layout, site, and jurisdiction. We test the room program against the property and current rules.

Does a detached ADU need separate utilities?+

Utility design is property-specific. The project team evaluates electrical, water, sewer, gas if used, metering options, and local utility requirements.

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