Los Angeles County ADU Guide

Malibu

Malibu adopted an ADU ordinance in January 2024 and has considered further amendments. Because the entire city sits within the Coastal Zone, ADU projects are reviewed against both state ADU law and the certified Local Coastal Program.

Official source verified 2026-08-16Official jurisdiction resource ↗
01 / Plan path

Choose the right production starting point.

Malibu adopted an ADU ordinance in January 2024 and has considered further amendments. Because the entire city sits within the Coastal Zone, ADU projects are reviewed against both state ADU law and the certified Local Coastal Program.

Express PlanStarting at $4,500

For a qualifying jurisdiction preapproved plan adapted into the property-specific architectural production set.

Custom PlanStarting at $6,500

For an original floor plan and architectural production set developed around the property and homeowner.

02 / Size + fee checkpoints

Size affects more than floor area.

The City states that portions of its Local Coastal Program are more restrictive than state ADU regulations. Treat state minimums as a starting point only and confirm the governing standard with the Planning Department.

The entire city is a designated Very High Fire Hazard Severity Zone, and city materials indicate a minimum street width of 20 feet is required. Fees and fire requirements both need confirmation.
500 SFConfirm school-fee assessment rules750 SFState impact-fee protection checkpoint1,000 SFTwo-bedroom state minimum allowance1,200 SFCommon local upper-range checkpoint
03 / Site conditions

Property conditions can change the path.

  • Local Coastal Program consistency and Coastal Development Permit requirements
  • Very High Fire Hazard Severity Zone construction and access standards
  • Minimum street width for fire access
  • Septic and onsite wastewater capacity
  • Bluff, geologic and drainage conditions
04 / Consultant screen

Likely disciplines to evaluate.

  • Structural engineering
  • Title 24 energy documentation
  • Survey
  • Coastal, geotechnical, septic and fire consultation as triggered

Consultants are retained only when required by the property, design, or reviewing agency. Their proposals and coordination are separate from the architectural production fee unless stated otherwise in the agreement.

05 / Property-specific next step

Turn the guide into a preliminary project report.

Enter the address to screen jurisdiction, mapped constraints, likely agencies, drawing requirements, consultants, and the preliminary fee path.

Check the property →Email Bennett Design Studio →
Important: This guide is general planning information, not a zoning determination, permit approval, fee quote, or guarantee of feasibility. Current parcel records, adopted codes, agency interpretations, utility requirements, site investigation, and written agency confirmation control.