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Detached accessory dwelling unit behind a Los Angeles-area home

Los Angeles, CA · project planning

ADU Construction & Garage Conversion in Los Angeles

An ADU request should identify the exact property, existing permitted structures, attached or detached concept, desired size, utilities, access, and whether plans already exist. Los Angeles remodeling rules depend on the exact property, zoning, overlays, and the work being proposed. This page serves the current NestVouch acquisition area rather than implying identical rules across every Los Angeles neighborhood. Start with the project address and distinguish cosmetic work from layout, structural, plumbing, electrical, gas, or mechanical changes before choosing a permit path.

  • ✓Answer one clear question at a time.
  • ✓Add notes or project photos when helpful.
  • ✓Submit the request from any valid 5-digit ZIP.

Start your adu request

The service is already selected. Move through one short project question per screen, then review the available next step.

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Local checkpoint

Confirm the permit path before pricing the final scope

LADBS recognizes attached, detached, garage or existing-space conversion, and junior ADU paths. Its free preapproved 455-square-foot one-bedroom plan can shorten design work, but every property still needs site-specific zoning, utility, foundation, and permit review.

Rules depend on the exact address and proposed work. Confirm the current requirements with Los Angeles Department of Building and Safety (LADBS) or the relevant agency before relying on a project schedule or estimate.

Official guidance ↗Official guidance ↗

Scope checklist

Bring these details into the first conversation.

  • ✓Exact property address
  • ✓Single- or multifamily property
  • ✓Permitted garage or existing-space status
  • ✓Attached, detached, conversion, or new-build preference
  • ✓Site and access photos

What changes the estimate

Compare written scopes, not a generic online price.

  • •New build versus conversion
  • •Site access and foundation
  • •Utility upgrades and trenching
  • •Design and engineering
  • •Fire, hillside, or other parcel constraints

Questions before hiring

Ask each contractor the same questions.

  • ?Is the plan truly preapproved for this jurisdiction?
  • ?Which site-specific reviews remain?
  • ?Who coordinates utilities and agency clearances?
  • ?What design and permit work is excluded?

How the NestVouch request works

1

Confirm the scope

Choose the answer closest to the work you need. Add notes or photos only when useful.

2

Send the project

Add the project ZIP and contact details after the scope is clear.

3

Review the next step

If booking is available, choose a real time. Otherwise, your request stays saved and we’ll follow up with the next step.

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Sources and review date

Local guidance reviewed 2026-07-12. Agency pages can change; verify current requirements for the exact address.