What documents do I need for a ADU permit in Los Angeles?

Los Angeles requires 6 documents for a ADU permit, including: Building Permit Application, Architectural Plans, Site Plan, Structural Design and Calculations, Mechanical, Electrical, Plumbing Plans, and more.

What are the most commonly missing items for Los Angeles ADU permits?

Common missing items include detailed site plans with scale and dimensions, equipment specification sheets, and NEC labeling plans. A complete checklist helps avoid plan-check rejections.

Do I need a adu permit in Los Angeles?

Yes. Los Angeles requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.

How long does adu permit approval take in Los Angeles?

Processing times in Los Angeles vary depending on project complexity and current review volume. The process involves 7 steps. Contact Los Angeles Development Services for current timelines.

What documents are required for a adu permit in Los Angeles?

Los Angeles requires 6 documents including Building Permit Application, Architectural Plans, Site Plan, Structural Design and Calculations, and others. See the full list above for details.

What happens if I build without a adu permit in Los Angeles?

Building without a permit in Los Angeles can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.

Can PermitMagic help prepare my adu permit submission in Los Angeles?

Yes. PermitMagic generates a submission-ready packet tailored to Los Angeles's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.

How much does a adu permit cost in Los Angeles?

ADU permit fees in Los Angeles typically range from $4,500 to $14,025, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Los Angeles.

ADU Permit Requirements in Los Angeles, California

Everything you need to apply for a adu permit in Los Angeles, California — documents, fees, steps, and a downloadable submission packet.

Build My Permit Packet

Key Facts

Permit required: Yes
Submission method: Online
Typical fee range: $4,500 – $14,025
Review time: Varies by jurisdiction
Inspections: 6 inspections required

VerifiedLast verified: Feb 15, 20262 verified sources

Permit Requirements (6 items)

6 required

📋 Forms & Applications(1)

📐 Plans & Diagrams(3)

📄 Supporting Documents(2)

Generate your permit packet

Get a personalized ADU permit packet for Los Angeles, California — tailored to your project details.

Required forms: Building Permit Application, and more
Pre-filled templates: Permit Cover Sheet
Fee breakdown: $1,500–$8,500 estimated total
Step-by-step LADBS portal submission guide
Inspection prep checklist (6 items)
Personalized for your specific project details

Build My Permit Packet

Free to preview · Pro to download

Permit Process

Follow these steps to submit your permit application through LADBS.

1
Pre-Design Meeting
Consult with LADBS to confirm ADU eligibility and applicable requirements under state and local law
2
Online Permit Submission
Submit building permit application and all design documents through LADBS online portal
You'll need: Building Permit Application, Architectural Plans, Site Plan, Structural Design and Calculations, Mechanical, Electrical, Plumbing Plans, Title 24 and CALGreen Compliance
3
Plan Examination
LADBS examines plans for compliance with California Building Code and Los Angeles Municipal Code ADU provisions
4
Corrections and Resubmittals
Address examiner comments and submit revised plans if necessary
5
Permit Approval and Fee Payment
Final approval and payment of permit fees. SB 13 limits certain ADU fees.
6
Construction with Inspections
Execute construction with LADBS inspections at foundation, framing, electrical, plumbing, mechanical, and final stages
7
Final Approval and Occupancy
Final inspection approval and Certificate of Occupancy for ADU

Fees and Timeline

Fee Breakdown

Fee	Range	Confidence
ADU Permit Fee	$3,000 – $8,500	Verified
Plan Review Fee	$1,500 – $5,525	Verified

Inspections Required

Foundation and soil inspection per California Building Code

Framing inspection for structural adequacy and fire-rating s

Framing inspection for structural adequacy and fire-rating separation

Electrical installation and service panel inspection

Plumbing rough-in and fixture connection inspection

Mechanical, HVAC, and water heater inspection

Final inspection with Title 24 energy and CALGreen complianc

Final inspection with Title 24 energy and CALGreen compliance verification

Authority Sources

Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.

LADBS

Last verified: February 15, 2026

2 sources referenced

Official page

California SB 13 & AB 68 - State ADU Streamlining Laws

Verified February 15, 2026

Portal guide

LADBS Online Services and ePermit Portal

Verified February 15, 2026

Official page

LADBS ADU Permitting Guidelines and Checklists

Verified February 15, 2026

Frequently Asked Questions

Do I need a adu permit in Los Angeles?: Yes. Los Angeles requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.
How long does adu permit approval take in Los Angeles?: Processing times in Los Angeles vary depending on project complexity and current review volume. The process involves 7 steps. Contact Los Angeles Development Services for current timelines.
What documents are required for a adu permit in Los Angeles?: Los Angeles requires 6 documents including Building Permit Application, Architectural Plans, Site Plan, Structural Design and Calculations, and others. See the full list above for details.
What happens if I build without a adu permit in Los Angeles?: Building without a permit in Los Angeles can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.
Can PermitMagic help prepare my adu permit submission in Los Angeles?: Yes. PermitMagic generates a submission-ready packet tailored to Los Angeles's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.
How much does a adu permit cost in Los Angeles?: ADU permit fees in Los Angeles typically range from $4,500 to $14,025, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Los Angeles.