Malibu

Malibu ADU Regulations and Building Requirements (2026)

If you're planning to build an Accessory Dwelling Unit (ADU) in Malibu, understanding the city's current ADU regulations is essential. This page provides a summary of allowable ADU types, size limits, zoning rules, permitting steps and links to official resources for further reading.

Overview of rules in Malibu

Malibu allows ADUs and JADUs in accordance with California State law and is in the process of updating its local ordinance to align with recent state requirements. ADUs are recognized as a tool to increase housing opportunities and reduce barriers to development. The city processes ADUs under objective standards and must ensure compliance with both state law and local regulations. 

Additionally, all ADU projects in Malibu must comply with the Local Coastal Program (LCP) and Coastal Act requirements, which may impose additional restrictions.

Malibu aligns with California’s broader ADU legislation but has its own requirements for height, setbacks and design review.

ADU Types Allowed

  • Detached ADU: Separate structure providing full independent living facilities (up to 1,200 sq ft)
  • Attached ADU: Attached to the primary residence with independent living facilities
  • Conversion ADU: Includes garage, attic, or basement conversions into living space
  • Junior ADU (JADU): Up to 500 sq ft within an existing or proposed single-family residence

Key ADU Regulations

  • Maximum Size:
    • Detached: Up to 1,200 sq ft
    • Attached: Up to 1,200 sq ft

  • Setbacks:
    • Minimum 4 ft side and rear setbacks

  • Height Limits:
    • Detached: Typically, up to 16-18 feet (may be increased up to 24-28 ft with approvals depending on roof type)
    • Attached: May follow similar height standards subject to local review and site conditions

  • Parking Requirements:
    • One off-street parking space per ADU may be required
    • Parking may be provided in tandem or within setbacks where feasible
    • No replacement parking required for garage conversions
    • In some cases, parking may be reduced or not required depending on site constraints or state exemptions

Permit Requirements

  • ADUs must comply with Malibu Municipal Code (MMC 17.44) and Local Coastal Program requirements
  • Projects must comply with California State ADU laws and objective standards
  • Review and approval are conducted in accordance with updated state regulations and local ordinance amendments

Homeowners should also review Malibu current fee schedule, utility connection requirements and fire code compliance.

Timeline for Permits

ADU regulations are being updated through a formal ordinance process, with Planning Commission and City Council hearings occurring between 2025 and 2026 to align with current state law requirements.

Engaging professionals familiar with Malibu ADU process can help streamline approval and potentially reduce delays.

Zoning and Lot Requirements

ADUs are governed by Malibu’s Municipal Code and Local Coastal Program. Since the entire city lies within the Coastal Zone, all ADU development must comply with Coastal Act and LCP requirements in addition to state law and some local provisions may be more restrictive than standard state ADU regulations.

Official Resources

For the most current and complete information, refer directly to the City of Malibu.

ADU regulations are constantly evolving and may vary by city, county, or even neighborhood. Before starting your project, it’s always best to consult with a trained professional or certified ADU Specialist to ensure your plans align with current local requirements.

Get Help Navigating ADU Rules in Malibu

ADU regulations are constantly evolving and may vary by city, county, or even neighborhood. Before starting your project, it’s always best to consult with a trained professional or certified ADU Specialist to ensure your plans align with current local requirements.

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